JP2013249749A

JP2013249749A - Valve opening/closing timing control apparatus and internal combustion engine control system

Info

Publication number: JP2013249749A
Application number: JP2012123441A
Authority: JP
Inventors: Hitoki Mukaide; 仁樹向出; Shigemitsu Suzuki; 重光鈴木; Naoto Inama; 直人稲摩
Original assignee: Aisin Seiki Co Ltd
Current assignee: Aisin Corp
Priority date: 2012-05-30
Filing date: 2012-05-30
Publication date: 2013-12-12
Anticipated expiration: 2032-05-30
Also published as: JP6015136B2

Abstract

PROBLEM TO BE SOLVED: To provide a valve opening/closing timing control apparatus capable of regulating from a middle lock phase to a relative rotation phase of a delayed angle side after starting an internal combustion engine at the middle lock phase.SOLUTION: A valve opening/closing timing control device has a regulating mechanism in which a first protruding/retracting member 31 is fitted into a first concave part 35 and a second protruding/retracting member 32 is fitted into a second concave part 36 in a middle lock phase and has a delaying part R in a flowing path supplying fluid to the second protruding/retracting member 32 so as to draw out the first protruding/retracting member 31 from the first concave part 35, while suppressing the second protruding/retracting part 32 from being drawn from the second concave part 36, by supplying fluid to any for only a set time when shifting from the middle lock phase P1 to the delayed side lock phase of the delayed angle side when the internal combustion engine is started.

Description

本発明は、弁開閉時期制御装置及び内燃機関制御システムに関し、詳しくは、内燃機関のクランクシャフトと同期回転する駆動側回転部材と、駆動側回転部材と同軸上に配置され内燃機関の弁開閉用のカムシャフトと一体回転する従動側回転部材とを２種の回転位相で規制する機構を備えている構成の改良に関する。 The present invention relates to a valve opening / closing timing control device and an internal combustion engine control system. More specifically, the present invention relates to a drive-side rotary member that rotates synchronously with a crankshaft of an internal combustion engine, It is related with the improvement of the structure provided with the mechanism which regulates the driven side rotation member which rotates integrally with the cam shaft of this by two types of rotation phases.

上記の弁開閉時期制御装置として特許文献１には、駆動回転体としてのハウジングの内部に、従動回転体としての内部ロータを備え、これらを進角室に相対移動させる遅角室と、これら遅角方向に相対移動させる進角室とが示されている。この構成では、進角室と遅角室との一方を選択して作動油を供給することでハウジングと内部ロータとの相対回転位相を遅角位相方向又は遅角位相方向に変位させる相対回転用ＯＣＶが示されている。 As the above valve opening / closing timing control device, Patent Literature 1 includes an internal rotor as a driven rotator inside a housing as a drive rotator, a retard chamber that moves these relative to an advance chamber, and these delay chambers. An advance chamber that is relatively moved in the angular direction is shown. In this configuration, one of the advance angle chamber and the retard angle chamber is selected and hydraulic oil is supplied to displace the relative rotation phase between the housing and the internal rotor in the retard angle phase direction or the retard angle phase direction. OCV is shown.

この特許文献１では、ハウジング側に第一規制部材と第二規制部材とを出退自在に備え、第一規制部材が嵌り込む第一規制溝と、第二規制部材が嵌り込む第二規制溝とを内部ロータに形成している。第一規制部材と第二規制部材とはスプリングにより突出付勢され、内部ロータには第一規制部材に対して抜き出す方向に作動油の圧力を作用させる第一連通路と、第二規制部材に対して抜き出す方向に作動油の圧力を作用させる第二連通路とが形成されている。 In Patent Document 1, a first restriction member and a second restriction member are provided on the housing side so as to be freely retractable, and a first restriction groove into which the first restriction member is fitted and a second restriction groove into which the second restriction member is fitted. Are formed on the inner rotor. The first restricting member and the second restricting member are projected and biased by a spring, and a first series passage that applies hydraulic oil pressure to the inner rotor in a direction to be extracted with respect to the first restricting member, and a second restricting member On the other hand, a second communication passage is formed for applying the pressure of the hydraulic oil in the direction of extraction.

この構成では、第一規制部材が第一規制溝に嵌り込むと同時に第二規制部材が第二規制溝に嵌り込む状態が中間ロック位相であり、第二規制部材を第二規制溝から抜き出した状態で第一規制部材が第一規制溝の遅角側の端部に当接する状態が遅角側規制位相である。 In this configuration, the state in which the first restriction member is fitted into the first restriction groove and the second restriction member is fitted into the second restriction groove is the intermediate lock phase, and the second restriction member is extracted from the second restriction groove. In this state, the state where the first restricting member is in contact with the end portion of the first restricting groove on the retarded angle side is the retarded angle restricting phase.

この特許文献１に示される弁開閉時期制御装置では、第一規制部材と第二規制部材とに個別に作動油を供給して、各々が対応する第一規制溝又は第二規制溝から抜き出す作動を行わせるための規制部用ＯＣＶ（規制部用流体制御機構）を備えている。 In the valve opening / closing timing control device disclosed in Patent Document 1, hydraulic oil is separately supplied to the first restricting member and the second restricting member, and each is extracted from the corresponding first restricting groove or second restricting groove. OCV for regulating part (fluid control mechanism for regulating part) is provided.

特開２０１１‐１８５２号公報JP 2011-1852 A

特許文献１にも記載されるように、エンジン（内燃機関）の始動時には相対回転位相を中間ロック位相に拘束し、エンジンの始動の後には、良好な加速を得るために相対回転位相を遅角側に変位させ、相対回転位相を中間ロック位相より遅角側の遅角側規制位相で規制することが行われている。 As described in Patent Document 1, the relative rotational phase is constrained to the intermediate lock phase when the engine (internal combustion engine) is started, and after the engine is started, the relative rotational phase is retarded to obtain good acceleration. The relative rotational phase is regulated by the retard side regulation phase that is retarded from the intermediate lock phase.

特許文献１に記載されるように２つの規制部材を備え、この２つの規制部材を抜き出す方向に作動させるために２つの連通路を備える構成では、２つの連通路を必要とし、２つの連通路に対して選択的に作動油を供給する制御弁（流体制御機構）を必要とするため、構成が複雑になり制御機構として３位置切換型の構成を用いる等、コスト上昇を招くものであった。 As described in Patent Document 1, in the configuration including two restricting members and two communicating passages for operating the two restricting members in a direction of extracting the two restricting members, two communicating passages are required, and two communicating passages are provided. Requires a control valve (fluid control mechanism) for selectively supplying hydraulic oil, and the configuration is complicated, and a three-position switching type configuration is used as the control mechanism. .

本発明の目的は、中間ロック位相で内燃機関を始動した後に、中間ロック位相より遅角側の相対回転位相に規制可能な弁開閉時期制御装置を低廉に構成する点にある。 An object of the present invention is to inexpensively configure a valve opening / closing timing control device that can be controlled to a relative rotational phase that is retarded from the intermediate lock phase after the internal combustion engine is started with the intermediate lock phase.

本発明の特徴は、内燃機関のクランクシャフトと同期回転する駆動側回転部材と、前記駆動側回転部材と同軸上に配置され前記内燃機関の弁開閉用のカムシャフトと一体回転する従動側回転部材とを備え、流体の供給により前記駆動側回転部材と前記従動側回転部材との相対回転位相を遅角方向に変位させる遅角室と、流体の供給により前記相対回転位相を進角方向に変位させる進角室とが形成され、前記駆動側回転部材と前記従動側回転部材との何れか一方の回転部材から他方の回転部材に向けて突出付勢される第１出退部材と第２出退部材とを備え、前記第１出退部材が突出状態で嵌り込む第１凹部と、前記第２出退部材が突出状態で嵌り込む第２凹部とを他方の回転部材に形成し、相対回転位相が前記進角方向の作動端となる最進角と前記遅角方向の作動端となる最遅角との間の所定位相となる中間ロック位相と、相対回転位相が前記中間ロック位相より遅角方向となる遅角側ロック位相とが設定され、前記第１出退部材が前記第１凹部に嵌り込むと同時に前記第２出退部材が前記第２凹部に嵌り込むことにより相対回転位相を前記中間ロック位相に拘束する拘束機構を有し、前記第２出退部材が前記第２凹部に嵌り込んだ状態で、相対回転位相の遅角方向への変位を許容するように前記第２凹部が溝状に形成され、この遅角方向への相対回転位相の変位で前記第２出退部材が前記第２凹部の端部に当接することにより相対回転位相を前記遅角側ロック位相に規制する規制機構を有し、前記第１出退部材を前記第１凹部から抜き出す方向に流体を供給する第１解除流路と、前記第２出退部材を前記第２凹部から抜き出す方向に流体を供給する第２解除流路とが、単一の主解除流路から流体が供給されるように構成され、前記第２解除流路から前記第２出退部材に供給される流体の流れを抑制する遅延部が備えられている点にある。 The present invention is characterized in that a driving side rotating member that rotates in synchronization with a crankshaft of an internal combustion engine, and a driven side rotating member that is arranged coaxially with the driving side rotating member and rotates integrally with a camshaft for opening and closing the valve of the internal combustion engine. And a retard chamber that displaces the relative rotational phase of the drive-side rotating member and the driven-side rotating member in the retarded direction by supplying fluid, and the relative rotational phase is displaced in the advanced direction by supplying fluid. A first advancement / retraction member and a second output member that are biased to project from one of the drive-side rotation member and the driven-side rotation member toward the other rotation member. A first recess that fits in a projecting state and a second recess that fits in a projecting state on the other rotating member, and is rotated relative to each other. The most advanced angle whose phase is the working end in the advance direction An intermediate lock phase that is a predetermined phase between the most retarded angle that is the operating end in the retard direction and a retard side lock phase in which the relative rotational phase is in the retard direction from the intermediate lock phase are set, The first retracting member is fitted into the first recess and the second retracting member is fitted into the second recess so that the relative rotation phase is constrained to the intermediate lock phase; 2 In the state where the retracting member is fitted in the second recess, the second recess is formed in a groove shape so as to allow the displacement of the relative rotation phase in the retard direction, and the relative rotation in the retard direction A control mechanism for restricting a relative rotational phase to the retard-side lock phase by contacting the second retracting member with an end of the second recess due to a phase shift; and A first release channel for supplying fluid in a direction to be extracted from the first recess; A second release channel that supplies fluid in a direction in which the second withdrawing member is withdrawn from the second recess is configured such that fluid is supplied from a single main release channel; Is provided with a delay portion for suppressing the flow of the fluid supplied to the second withdrawing member.

この構成によると、拘束機構により中間ロック位相に拘束した状態から相対回転位相を遅角側ロック位相に変位させる場合には、遅角室に流体を供給する状態で、主解除流路に流体を供給する。この供給により主解除流路から第１解除流路に送られる流体の圧力で第１出退部材は第１凹部から抜き出される。また、主解除油路に流体が供給された場合には、この主解除油路から第２解除流路に送られる流体の流れが遅延部によって抑制されるため第２出退部材の抜き出し方向への作動は遅れ、第１出退部材が第１凹部から抜き出したタイミングにおいて、第２出退部材を第２凹部に嵌り込む状態に維持することが可能となる。
このような理由から、設定時間だけ主解除流路に流体を供給することにより、第１出退部材を第１凹部から抜き出し、相対回転位相が遅角方向に変位を開始した後にも第２出退部材を第２凹部に嵌り込む状態に維持できる。そして、相対回転位相が遅角方向に変位することにより第２出退部材を第２凹部の遅角側の端部に当接させ規制機構により遅角側ロック位相に規制することが可能となる。
このような作動を実現するためには、第１解除流路と第２解除流路に供給する流体を独立して制御する流路を形成しなくて済むため構成が単純化し、この流体を制御する弁体も２位置切換型で済む。
従って、中間ロック位相で内燃機関を始動した後に、中間ロック位相より遅角側の相対回転位相に規制可能な弁開閉時期制御装置が低廉に構成された。 According to this configuration, when the relative rotational phase is displaced from the state of being constrained to the intermediate lock phase by the constraining mechanism to the retard side lock phase, the fluid is supplied to the main release channel while the fluid is being supplied to the retard chamber. Supply. With this supply, the first withdrawal member is extracted from the first recess by the pressure of the fluid sent from the main release channel to the first release channel. Further, when the fluid is supplied to the main release oil passage, the flow of the fluid sent from the main release oil passage to the second release passage is suppressed by the delay portion, so that the second withdrawal member is pulled out. The operation of is delayed, and at the timing when the first withdrawing / retracting member is extracted from the first recessed portion, the second withdrawing / retracting member can be maintained in a state of being fitted into the second recessed portion.
For this reason, by supplying the fluid to the main release channel for the set time, the first withdrawal member is removed from the first recess, and the second withdrawal is performed even after the relative rotational phase starts displacement in the retarded direction. The retractable member can be maintained in a state of being fitted into the second recess. Then, when the relative rotational phase is displaced in the retarded direction, the second retracting member is brought into contact with the retarded end of the second recess, and can be regulated to the retarded lock phase by the regulating mechanism. .
In order to realize such an operation, since it is not necessary to form a flow path for independently controlling the fluid supplied to the first release flow path and the second release flow path, the configuration is simplified and the fluid is controlled. The valve body to be used is also a two-position switching type.
Therefore, a valve opening / closing timing control device that can regulate the relative rotation phase on the retard side of the intermediate lock phase after starting the internal combustion engine with the intermediate lock phase has been constructed at low cost.

本発明は、前記第２解除流路の流路断面積を、前記第１解除流路の流路断面積より小さく設定することにより前記遅延部が構成されても良い。 In the present invention, the delay unit may be configured by setting a channel cross-sectional area of the second release channel smaller than a channel cross-sectional area of the first release channel.

これによると、第２解除流路の流路断面積の設定により遅延部を構成するため、特別な部品等を用いないで済み、組み立てが容易となり低廉化も実現する。 According to this, since the delay portion is configured by setting the channel cross-sectional area of the second release channel, it is not necessary to use a special part or the like, and assembling becomes easy and cost reduction is realized.

本発明は、流体が供給された際に第１解除流路に流れる流体の量を制限する位置に移動し、流体を送り出す際には第１解除流路に流れる流体を制限しない位置に移動する流量制御体を備えて前記遅延部が構成されても良い。 The present invention moves to a position that limits the amount of fluid that flows through the first release channel when fluid is supplied, and moves to a position that does not limit the fluid that flows through the first release channel when the fluid is sent out. The delay unit may include a flow rate control body.

これによると、流体が供給される際には流量制御体が流体の流れを制限するため第２出退部材の作動を抑制し、流体を排出する際には制限されずに流体を流し出すため第２規制体を迅速に突出作動させることも可能となる。 According to this, when the fluid is supplied, the flow control body restricts the flow of the fluid so that the operation of the second withdrawal member is suppressed, and when the fluid is discharged, the fluid flows out without being restricted. It is also possible to rapidly project the second restricting body.

本発明は、請求項１に記載の弁開閉時期制御装置の進角室と遅角室との一方を選択して流体を供給する位相制御弁と、主解除流路に流体を供給する解除制御弁とを備え、前記位相制御弁と前記解除制御弁とを制御する制御ユニットを備え、前記制御ユニットは、相対回転位相が中間ロック位相にある状態で内燃機関の始動が行われた場合には、前記位相制御弁の制御により前記遅角室に流体を供給すると共に、前記解除制御弁を制御して設定時間だけ前記主解除流路に流体を供給する制御を行っても良い。 The present invention provides a phase control valve that selects one of the advance chamber and the retard chamber of the valve opening / closing timing control device according to claim 1 and supplies the fluid, and the release control that supplies the fluid to the main release channel A control unit that controls the phase control valve and the release control valve, and the control unit is configured to start the internal combustion engine in a state where the relative rotational phase is in the intermediate lock phase. In addition, the fluid may be supplied to the retardation chamber by the control of the phase control valve, and the release control valve may be controlled to supply the fluid to the main release channel for a set time.

これによると、例えば、相対回転位相が中立ロック位相にある状態で内燃機関を始動させ、この始動の後に相対回転位相を遅角側ロック位相まで変位させる場合には、位相制御弁を制御して遅角室に流体を供給すると共に、制御解除弁を制御して設定時間だけ主解除流路に流体を供給する。この制御により、第１出退部材を第１凹部から抜き出し、相対回転位相が遅角側に変位を開始した後に第２出退部材を第２凹部に嵌り込む状態に維持する。この後に、相対回転位相が遅角側に変位することにより第２出退部材を第２凹部の遅角側の端部に当接させ規制機構により遅角側ロック位相に規制することも可能となる。 According to this, for example, when the internal combustion engine is started in a state where the relative rotation phase is in the neutral lock phase and the relative rotation phase is displaced to the retard side lock phase after the start, the phase control valve is controlled. While supplying the fluid to the retard chamber, the control release valve is controlled to supply the fluid to the main release channel for a set time. By this control, the first retracting member is extracted from the first recess, and the second retracting member is maintained in the second recess after the relative rotational phase starts to be shifted to the retard side. After this, the relative rotation phase is displaced to the retard side, so that the second retracting member can be brought into contact with the retard side end of the second recess and regulated to the retard side lock phase by the regulation mechanism. Become.

本発明の特徴は、内燃機関のクランクシャフトと同期回転する駆動側回転部材と、前記駆動側回転部材と同軸上に配置され前記内燃機関の弁開閉用のカムシャフトと一体回転する従動側回転部材とを備え、流体の供給により前記駆動側回転部材と前記従動側回転部材との相対回転位相を遅角方向に変位させる遅角室と、流体の供給により前記相対回転位相を進角方向に変位させる進角室とが形成され、前記駆動側回転部材と前記従動側回転部材との何れか一方の回転部材から他方の回転部材に向けて突出付勢される第１出退部材と第２出退部材とを備え、前記第１出退部材が突出状態で嵌り込む第１凹部と、前記第２出退部材が突出状態で嵌り込む第２凹部とを他方の回転部材に形成し、前記第１出退部材を前記第１凹部から抜き出す方向に流体を供給する第１解除流路と、前記第２出退部材を前記第２凹部から抜き出す方向に流体を供給する第２解除流路とが、単一の主解除流路から供給されるように構成され、前記主解除流路から前記第１出退部材及び前記第２出退部材に流体が供給される際に、前記第１出退部材に流体が供給開始されるタイミングと前記第２出退部材に流体が供給開始されるタイミングとが異なるように、前記第１解除流路または前記第２解除流路に流体の流れを抑制する遅延部が備えられている点にある。 The present invention is characterized in that a driving side rotating member that rotates in synchronization with a crankshaft of an internal combustion engine, and a driven side rotating member that is arranged coaxially with the driving side rotating member and rotates integrally with a camshaft for opening and closing the valve of the internal combustion engine. And a retard chamber that displaces the relative rotational phase of the drive-side rotating member and the driven-side rotating member in the retarded direction by supplying fluid, and the relative rotational phase is displaced in the advanced direction by supplying fluid. A first advancement / retraction member and a second output member that are biased to project from one of the drive-side rotation member and the driven-side rotation member toward the other rotation member. A first recess that fits in a projecting state and a second recess that fits in a projecting state on the other rotating member. 1 in the direction to pull out the withdrawal member from the first recess The first release channel for supplying the body and the second release channel for supplying the fluid in the direction in which the second retracting member is extracted from the second recess are supplied from the single main release channel. And when the fluid is supplied from the main release channel to the first withdrawing / withdrawing member and the second withdrawing / withdrawing member, the timing when the fluid starts to be supplied to the first withdrawing / leaving member and the second The delay part which suppresses the flow of the fluid is provided in the 1st release channel or the 2nd release channel so that the timing at which the supply of fluid to the withdrawal member is different may be provided.

この構成によると、遅延部が備えられているため、単一の主解除流路から第１出退部材と第２出退部材とに対して同時に流体を供給しても第１出退部材と第２出退部材とに流体が供給されるタイミングを異ならせることができる。従って、流体の供給源や流体の供給を制御する部材が１つであったとしても、第１出退部材と第２出退部材との双方が、それぞれ第１凹部と第２凹部とに嵌り込む状態と、第１出退部材又は第２出退部材の一方が第１凹部又は第２凹部に嵌り込む状態とを作り出すことができる。 According to this configuration, since the delay portion is provided, even if the fluid is supplied simultaneously from the single main release channel to the first withdrawal member and the second withdrawal member, the first withdrawal member The timing at which the fluid is supplied to the second withdrawing member can be made different. Therefore, even if there is one fluid supply source and one member that controls the fluid supply, both the first withdrawing member and the second withdrawing member fit into the first recess and the second recess, respectively. And a state in which one of the first withdrawing member and the second withdrawing member fits into the first recessed portion or the second recessed portion can be created.

内燃機関制御システムの構成を示す図である。It is a figure which shows the structure of an internal combustion engine control system. 図１のII−II線断面図である。It is the II-II sectional view taken on the line of FIG. 弁開閉時期制御装置の遅角側ロック位相における断面図である。It is sectional drawing in the retard side lock phase of a valve opening / closing timing control apparatus. 弁開閉時期制御装置の最遅角ロック位相における断面図である。It is sectional drawing in the most retarded angle lock phase of a valve opening / closing timing control apparatus. オリフィス部の構成を示す断面図である。It is sectional drawing which shows the structure of an orifice part. 図５のVI−VI線断面図である。FIG. 6 is a cross-sectional view taken along line VI-VI in FIG. 5. 中間ロック位相における規制機構の断面と油路系を示す図である。It is a figure which shows the cross section and oil path system of a control mechanism in an intermediate | middle lock phase. 中間ロック位相から遅角側ロック位相へ回転位相が変化する際の規制機構の断面と油路系を示す図である。It is a figure which shows the cross section and oil path system of a control mechanism when a rotation phase changes from an intermediate | middle lock phase to a retard side lock phase. 遅角側ロック位相に達した状態の規制機構の断面と油路系を示す図である。It is a figure which shows the cross section and oil path system of the control mechanism of the state which reached the retard angle side lock phase. 遅角側ロック位相から最遅角ロック位相へ回転位相が変化する際の規制機構の断面と油路系を模式的に示す図である。It is a figure which shows typically the cross section and oil path system of a control mechanism when a rotation phase changes from a retard angle side lock phase to the most retarded angle lock phase. 最遅角ロック位相に達した状態の規制機構の断面と油路系を示す図である。It is a figure which shows the cross section and oil path system of the control mechanism of the state which reached the most retarded angle lock phase. 別実施形態（ａ）のオリフィス部の構成を示す断面図である。It is sectional drawing which shows the structure of the orifice part of another embodiment (a).

以下、本発明の実施形態を図面に基づいて説明する。
〔基本構成〕
図１及び図２に示すように、内燃機関としてのエンジンＥの吸気バルブ１Ｖの開閉時期を設定する弁開閉時期制御装置１０と、エンジンＥとを制御するエンジン制御ユニット４０を備えて内燃機関制御システムが構成されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[Basic configuration]
As shown in FIG. 1 and FIG. 2, an internal combustion engine control is provided by including a valve opening / closing timing control device 10 that sets an opening / closing timing of an intake valve 1V of an engine E as an internal combustion engine, and an engine control unit 40 that controls the engine E. The system is configured.

エンジンＥは乗用車等の車両に備えられるものであり、本発明の内燃機関制御システムは、信号待ち等で停車時した際には、このエンジン制御ユニット４０がエンジンＥを停止させるアイドルストップ制御を実現する。尚、この内燃機関制御システムは、ハイブリッド型の車両のようにエンジンＥの停止と始動とが頻繁に行われる車両において、弁開閉時期制御装置１０とエンジンＥとを制御にも適用できる。 The engine E is provided in a vehicle such as a passenger car, and the internal combustion engine control system according to the present invention realizes idle stop control in which the engine control unit 40 stops the engine E when the vehicle is stopped due to a signal or the like. To do. The internal combustion engine control system can also be applied to control the valve timing control device 10 and the engine E in a vehicle in which the engine E is frequently stopped and started, such as a hybrid vehicle.

エンジンＥには、クランクシャフト１に駆動回転力を伝えるスタータモータＭと、燃料の噴射を制御する燃料制御装置５と、点火プラグ（図示せず）による点火を制御する点火制御装置６と、クランクシャフト１の回転角と回転速度とを検出するシャフトセンサ１Ｓを備えている。弁開閉時期制御装置１０には外部ロータ１１と内部ロータ１２との相対回転位相を検出する位相検出センサ４６が備えられている。 The engine E includes a starter motor M that transmits driving torque to the crankshaft 1, a fuel control device 5 that controls fuel injection, an ignition control device 6 that controls ignition by a spark plug (not shown), a crank A shaft sensor 1S that detects a rotation angle and a rotation speed of the shaft 1 is provided. The valve timing control device 10 is provided with a phase detection sensor 46 that detects the relative rotational phase between the external rotor 11 and the internal rotor 12.

エンジン制御ユニット４０は、エンジンＥを管理するＥＣＵとして構成され、このエンジン制御ユニット４０は、ソフトウエアで成る機関制御部４１と、ソフトウエアで成る位相制御部４２とを備えている。機関制御部４１はエンジンＥの自動始動、自動停止等を行い、位相制御部４２は弁開閉時期制御装置１０の相対回転位相とロック機構とを制御する。このエンジン制御ユニット４０に関連する制御構成と制御形態とは後述する。 The engine control unit 40 is configured as an ECU that manages the engine E. The engine control unit 40 includes an engine control unit 41 made of software and a phase control unit 42 made of software. The engine control unit 41 automatically starts and stops the engine E, and the phase control unit 42 controls the relative rotational phase and the lock mechanism of the valve opening / closing timing control device 10. The control configuration and control mode related to the engine control unit 40 will be described later.

〔弁開閉時期制御装置〕
図１〜図４に示すように、弁開閉時期制御装置１０は、エンジンＥのクランクシャフト１と同期回転する駆動側回転部材としての外部ロータ１１と、エンジンＥの燃焼室の吸気バルブ１Ｖを開閉するカムシャフト３に連結ボルト１３により連結する従動側回転部材としての内部ロータ１２とを備えている。内部ロータ１２は、カムシャフト３の軸芯Ｘと同軸芯に配置され、この内部ロータ１２と外部ロータ１１とは軸芯Ｘを中心にして相対回転自在に構成されている。 [Valve opening / closing timing control device]
As shown in FIGS. 1 to 4, the valve timing control device 10 opens and closes an external rotor 11 as a drive side rotating member that rotates synchronously with the crankshaft 1 of the engine E, and an intake valve 1 </ b> V of the combustion chamber of the engine E. And an internal rotor 12 as a driven side rotating member connected to the camshaft 3 to be connected by a connecting bolt 13. The internal rotor 12 is disposed coaxially with the axis X of the camshaft 3, and the internal rotor 12 and the external rotor 11 are configured to be relatively rotatable about the axis X.

外部ロータ１１と内部ロータ１２とは軸芯Ｘと同軸芯上に配置され、これらはフロントプレート１４とリヤプレート１５とに挟み込まれる状態で締結ボルト１６により締結されている。外部ロータ１１に連結するリヤプレート１５の外周にはタイミングスプロケット１５Ｓが形成されている。内部ロータ１２の中心部位がリヤプレート１５の中央部に形成された開口を貫通する状態で配置され、この内部ロータ１２の後端位置に吸気側のカムシャフト３が連結する。 The outer rotor 11 and the inner rotor 12 are arranged on the same axis as the axis X, and are fastened by fastening bolts 16 while being sandwiched between the front plate 14 and the rear plate 15. A timing sprocket 15S is formed on the outer periphery of the rear plate 15 connected to the external rotor 11. The central portion of the internal rotor 12 is disposed so as to pass through an opening formed in the central portion of the rear plate 15, and the intake-side camshaft 3 is connected to the rear end position of the internal rotor 12.

外部ロータ１１には軸芯Ｘの方向（内方）に向けて突出する複数の突出部１１Ｔを一体的に形成することにより回転方向で隣接する突出部１１Ｔの間に流体圧室Ｃが形成されている。内部ロータ１２は複数の突出部１１Ｔの突出端に密接する外周を有する円柱状に形成されると共に、流体圧室Ｃに嵌め込まれる複数のベーン１７を備えている。このベーン１７は流体圧室Ｃを回転方向で２つの空間に仕切る位置に配置され、これにより流体圧室Ｃは進角室Ｃａと遅角室Ｃｂとに分割される。 The external rotor 11 is integrally formed with a plurality of projecting portions 11T projecting in the direction of the axis X (inward), thereby forming a fluid pressure chamber C between the projecting portions 11T adjacent in the rotational direction. ing. The inner rotor 12 is formed in a columnar shape having an outer periphery that is in close contact with the protruding ends of the plurality of protruding portions 11T, and includes a plurality of vanes 17 that are fitted into the fluid pressure chambers C. The vane 17 is disposed at a position that divides the fluid pressure chamber C into two spaces in the rotational direction, whereby the fluid pressure chamber C is divided into an advance chamber Ca and a retard chamber Cb.

外部ロータ１１と内部ロータ１２との相対回転位相（以下、相対回転位相と称する）が最遅角にある状態から相対回転位相を中間ロック位相Ｐ１に達するまで付勢力を作用させるトーションスプリング１８が備えられている。尚、トーションスプリング１８の付勢力が作用する範囲は、中間ロック位相Ｐ１を超えるものでも良く、中間ロック位相Ｐ１に達しないものであっても良い。 A torsion spring 18 is provided that applies a biasing force from a state in which the relative rotational phase between the external rotor 11 and the internal rotor 12 (hereinafter referred to as a relative rotational phase) is at the most retarded angle until the relative rotational phase reaches the intermediate lock phase P1. It has been. The range in which the urging force of the torsion spring 18 acts may be beyond the intermediate lock phase P1, or may not reach the intermediate lock phase P1.

この弁開閉時期制御装置１０は、エンジンＥのクランクシャフト１に設けた出力スプロケット７と、外部ロータ１１のタイミングスプロケット１５Ｓとに亘ってタイミングチェーン８を巻回することで外部ロータ１１がクランクシャフト１と同期回転する。図面には示していないが、排気側のカムシャフト３の前端にも弁開閉時期制御装置１０と同様の構成の装置を備えており、この装置に対してもタイミングチェーン８から回転力が伝えられる。 This valve opening / closing timing control device 10 is configured such that the external rotor 11 is connected to the crankshaft 1 by winding the timing chain 8 over the output sprocket 7 provided on the crankshaft 1 of the engine E and the timing sprocket 15S of the external rotor 11. Rotate synchronously. Although not shown in the drawing, the front end of the camshaft 3 on the exhaust side is also provided with a device having the same configuration as the valve opening / closing timing control device 10, and the rotational force is transmitted from the timing chain 8 to this device as well. .

弁開閉時期制御装置１０は、クランクシャフト１からの駆動力により外部ロータ１１が駆動回転方向Ｓに向けて回転する。また、外部ロータ１１に対して内部ロータ１２が駆動回転方向Ｓと同方向へ回転する方向を進角方向Ｓａと称し、この逆方向への回転方向を遅角方向Ｓｂと称している。この弁開閉時期制御装置１０では、相対回転位相が進角方向Ｓａに変位する際に変位量の増大に伴い吸気圧縮比を高め、相対回転位相が遅角方向Ｓｂに変位する際に変位量の増大に伴い吸気圧縮比を低減するようにクランクシャフト１とカムシャフト３との関係が設定されている。 In the valve opening / closing timing control device 10, the external rotor 11 rotates in the driving rotation direction S by the driving force from the crankshaft 1. A direction in which the inner rotor 12 rotates in the same direction as the drive rotation direction S with respect to the outer rotor 11 is referred to as an advance angle direction Sa, and a rotation direction in the opposite direction is referred to as a retard angle direction Sb. In this valve opening / closing timing control device 10, when the relative rotational phase is displaced in the advance angle direction Sa, the intake compression ratio is increased as the displacement amount is increased, and when the relative rotational phase is displaced in the retard direction Sb, the displacement amount is increased. The relationship between the crankshaft 1 and the camshaft 3 is set so as to reduce the intake compression ratio as it increases.

ベーン１７で仕切られた流体圧室Ｃのうち、流体としての作動油が供給されることで相対回転位相を進角方向Ｓａに変位させる空間が進角室Ｃａであり、これとは逆に、流体としての作動油が供給されることで相対回転位相を遅角方向Ｓｂに変位させる空間が遅角室Ｃｂである。ベーン１７が進角方向の移動端（軸芯Ｘを中心にした揺動端）に達した状態での相対回転位相を最進角と称し、ベーン１７が遅角側の移動端（軸芯Ｘを中心にした揺動端）に達した状態での相対回転位相を最遅角と称している。尚、最進角は、ベーン１７の進角方向の移動端だけはなく、この近傍を含む概念である。これと同様に最遅角はベーン１７の遅角方向での移動端だけではなく、この近傍を含む概念である。 Of the fluid pressure chambers C partitioned by the vanes 17, the space that displaces the relative rotational phase in the advance direction Sa by supplying hydraulic fluid as the fluid is the advance chamber Ca. On the contrary, A space that displaces the relative rotational phase in the retarding direction Sb by supplying hydraulic fluid as a fluid is the retarding chamber Cb. The relative rotational phase in a state where the vane 17 has reached the moving end in the advance direction (the swing end about the axis X) is referred to as the most advanced angle, and the vane 17 is moved on the retard side (the axis X). The relative rotation phase in the state of reaching the rocking end centered on is called the most retarded angle. The most advanced angle is a concept including not only the moving end of the vane 17 in the advance direction but also the vicinity thereof. Similarly, the most retarded angle is a concept including not only the moving end of the vane 17 in the retarded direction but also the vicinity thereof.

内部ロータ１２には進角室Ｃａに連通する進角制御油路２１と、遅角室Ｃｂに連通する遅角制御油路２２と、後述する３つのロック機構にロック解除方向へ作動油を供給する主解除油路２３（主解除流路の一例）とが形成されている。この弁開閉時期制御装置１０では、エンジンＥのオイルパンに貯留される潤滑油を作動油として用いており、この作動油が進角室Ｃａ又は遅角室Ｃｂに供給される。 The internal rotor 12 is supplied with hydraulic oil in the unlocking direction to an advance angle control oil passage 21 communicating with the advance angle chamber Ca, a retard angle control oil passage 22 communicating with the delay angle chamber Cb, and three lock mechanisms described later. Main release oil passage 23 (an example of a main release passage) is formed. In this valve opening / closing timing control device 10, lubricating oil stored in an oil pan of the engine E is used as hydraulic oil, and this hydraulic oil is supplied to the advance chamber Ca or the retard chamber Cb.

〔弁開閉時期制御装置：ロック機構〕
この弁開閉時期制御装置１０は、図２〜図４に示すように、中間ロック機構Ｌ１（拘束機構の一例）と、遅角側ロック機構Ｌ２（規制機構の一例）と、最遅角ロック機構Ｌ３との３つのロック機構を備えている。中間ロック機構Ｌ１（拘束機構の一例）は、外部ロータ１１と内部ロータ１２との相対回転位相を図２に示す中間ロック位相Ｐ１にロックする（拘束する）。遅角側ロック機構Ｌ２は、相対回転位相を中間ロック位相Ｐ１より遅角方向Ｓｂで図３に示す遅角側ロック位相Ｐ２にロックする（規制する）。最遅角ロック機構Ｌ３は、相対回転位相を図４に示す最遅角に対応する最遅角ロック位相Ｐ３にロックする（拘束する）。 [Valve opening / closing timing control device: Lock mechanism]
2 to 4, the valve opening / closing timing control device 10 includes an intermediate lock mechanism L1 (an example of a restraining mechanism), a retard side lock mechanism L2 (an example of a restriction mechanism), and a most retarded angle lock mechanism. Three locking mechanisms with L3 are provided. The intermediate lock mechanism L1 (an example of a restraint mechanism) locks (restrains) the relative rotational phase between the external rotor 11 and the internal rotor 12 to the intermediate lock phase P1 shown in FIG. The retard side lock mechanism L2 locks (regulates) the relative rotation phase to the retard side lock phase P2 shown in FIG. 3 in the retard direction Sb from the intermediate lock phase P1. The most retarded angle lock mechanism L3 locks (restrains) the relative rotation phase to the most retarded angle lock phase P3 corresponding to the most retarded angle shown in FIG.

中間ロック位相Ｐ１は、相対回転位相が進角方向Ｓａの作動端となる最進角と前記遅角方向Ｓｂの作動端となる最遅角との間の所定位相に設定され、低温状態のエンジンＥの始動を良好に行う相対回転位相である。遅角側ロック位相Ｐ２は、エンジンＥの始動後のアイドリング時にＨＣ排出量を低減できる相対回転位相である。最遅角ロック位相Ｐ３は、高温状態で停止しているエンジンＥ（停止から時間が経過していない状態のエンジンＥ）を低トルクでクランキングする相対回転位相である。 The intermediate lock phase P1 is set to a predetermined phase between the most advanced angle at which the relative rotational phase becomes the operating end in the advance direction Sa and the most retarded angle as the operating end in the retarded direction Sb. This is a relative rotational phase for favorably starting E. The retard-side lock phase P2 is a relative rotation phase that can reduce the HC emission amount during idling after the engine E is started. The most retarded angle locking phase P3 is a relative rotation phase for cranking the engine E that is stopped in a high temperature state (the engine E that has not passed time since the stop) with low torque.

中間ロック機構Ｌ１と遅角側ロック機構Ｌ２と最遅角ロック機構Ｌ３とは、第１出退部材３１と、第２出退部材３２と、第１凹部３５と、第２凹部３６と、第３凹部３７との組み合わせにより構成される。 The intermediate lock mechanism L1, the retard side lock mechanism L2, and the most retarded angle lock mechanism L3 include a first retracting member 31, a second retracting member 32, a first recess 35, a second recess 36, It is comprised by the combination with 3 recessed parts 37.

第１出退部材３１と第２出退部材３２とは、プレート状の部材で構成され、軸芯Ｘと直交する姿勢で、突出端が軸芯Ｘに向けて接近・離間できるように外部ロータ１１に対し出退自在に支持されている。第１出退部材３１は第１スプリング３１Ｓにより内部ロータ１２の方向に突出付勢され、第２出退部材３２は第２スプリング３２Ｓにより内部ロータ１２の方向に突出付勢されている。 The first withdrawing member 31 and the second withdrawing member 32 are constituted by plate-like members, and are external rotors so that the projecting ends can approach and separate toward the axis X in a posture orthogonal to the axis X. 11 is supported so that it can be withdrawn and retracted. The first advancing / retracting member 31 is projected and biased toward the internal rotor 12 by the first spring 31S, and the second advancing / retracting member 32 is biased and projected toward the internal rotor 12 by the second spring 32S.

第１凹部３５は、内部ロータ１２の周方向に沿って溝状に形成されている。これと同様に第２凹部３６は、内部ロータ１２の周方向に沿って溝状に形成されているが、第１凹部３５と比較して浅い溝状に形成され、進角方向の端部に第２出退部材３２が嵌り込む嵌合孔部３６Ａが形成されている。第３凹部３７は第１出退部材３１が嵌り込む孔状に形成されている。 The first recess 35 is formed in a groove shape along the circumferential direction of the inner rotor 12. Similarly to this, the second recess 36 is formed in a groove shape along the circumferential direction of the inner rotor 12, but is formed in a shallow groove shape compared with the first recess 35, and at the end in the advance direction. A fitting hole 36A into which the second withdrawing member 32 is fitted is formed. The third recess 37 is formed in a hole shape into which the first withdrawing member 31 is fitted.

中間ロック位相Ｐ１では、第１凹部３５に嵌り込んだ第１出退部材３１が第１凹部３５の内面の進角方向Ｓａの端部に当接すると共に、第２凹部３６に嵌り込んだ第２出退部材３２が第２凹部３６の内面の遅角方向Ｓｂの端部に当接する。 In the intermediate lock phase P1, the first extension / retraction member 31 fitted in the first recess 35 abuts on the end of the inner surface of the first recess 35 in the advance direction Sa and the second fit in the second recess 36. The withdrawing / retracting member 32 comes into contact with the end of the inner surface of the second recess 36 in the retarding direction Sb.

このように相対回転位相を中間ロック位相Ｐ１に拘束する第１出退部材３１と第１凹部３５と第２出退部材３２と第２凹部３６とで本発明の中間ロック機構Ｌ１（拘束機構の具体例）が構成されている。 As described above, the intermediate lock mechanism L1 of the present invention (the restraint mechanism of the restraint mechanism) is composed of the first retracting member 31, the first recess 35, the second retracting member 32, and the second recess 36 that constrain the relative rotational phase to the intermediate lock phase P1. Specific example) is configured.

また、相対回転位相が中間ロック位相Ｐ１にある状態で、第１出退部材３１を第１凹部３５から抜き出した後に、相対回転位相を遅角方向Ｓｂに変位させて第２出退部材３２が第２凹部３６の内面の進角方向の端部に当接する状態で嵌合孔部３６Ａに嵌合する相対回転位相が遅角側ロック位相Ｐ２である。 Further, in the state where the relative rotational phase is at the intermediate lock phase P1, after the first retracting member 31 is extracted from the first recess 35, the relative rotational phase is displaced in the retarding direction Sb, so that the second retracting member 32 is The relative rotation phase that fits into the fitting hole 36A while being in contact with the end of the inner surface of the second recess 36 in the advance direction is the retard side lock phase P2.

このように相対回転位相を遅角側ロック位相Ｐ２に規制する第２出退部材３２と第２凹部３６とで本発明の遅角側ロック機構Ｌ２（規制機構の具体例）が構成される。 In this way, the second advancing / retracting member 32 that restricts the relative rotational phase to the retard side lock phase P2 and the second recess 36 constitute the retard side lock mechanism L2 (specific example of the regulation mechanism) of the present invention.

尚、この遅角側ロック位相Ｐ２では、第２出退部材３２が第２凹部３６の嵌合孔部３６Ａに嵌り込む構成は必須ではなく、嵌合孔部３６Ａを備えずに遅角側ロック機構Ｌ２を構成しても良い。このように嵌合孔部３６Ａを備えない構成では、遅角側ロック位相Ｐ２において、第２凹部３６の遅角方向Ｓｂの壁面に第２出退部材３２が当接する構成となる。 In this retard side lock phase P2, it is not essential that the second extending / retracting member 32 is fitted into the fitting hole 36A of the second recess 36, and the retard side lock is not provided without the fitting hole 36A. The mechanism L2 may be configured. Thus, in the configuration not including the fitting hole portion 36A, the second extending / retracting member 32 comes into contact with the wall surface in the retarding direction Sb of the second recess 36 in the retarding side lock phase P2.

更に、遅角側ロック位相Ｐ２にある状態で、第２出退部材３２を第２凹部３６から抜き出し、相対回転位相を更に遅角方向Ｓｂに変位させて第１出退部材３１が第３凹部３７に嵌り込む回転位相が最遅角ロック位相Ｐ３である。 Further, the second retracting member 32 is extracted from the second recess 36 in the state of the retard side lock phase P2, and the relative rotation phase is further displaced in the retarding direction Sb so that the first retracting member 31 is the third recess. 37 is the most retarded lock phase P3.

〔弁開閉時期制御装置：油路構成〕
主解除油路２３（主解除流路の一例）の作動油を第１凹部３５に供給する第１解除油路２３Ａ（第１解除流路の一例）と、主解除油路２３の作動油を第２凹部３６に供給する第２解除油路２３Ｂ（第２解除流路の一例）と、主解除油路２３の作動油を第３凹部３７に供給する第３解除油路２３Ｃとが内部ロータ１２に形成されている。 [Valve opening / closing timing control device: oil passage configuration]
The first release oil passage 23A (an example of the first release passage) that supplies the hydraulic oil in the main release oil passage 23 (an example of the main release passage) to the first recess 35, and the hydraulic oil in the main release oil passage 23 A second release oil passage 23B (an example of a second release passage) that supplies the second recess 36 and a third release oil passage 23C that supplies the hydraulic oil in the main release oil passage 23 to the third recess 37 are internal rotors. 12 is formed.

特に、主解除油路２３から第２解除油路２３Ｂを介して第２出退部材３２に供給される作動油の流れを抑制するように、この油路系に遅延部としてのオリフィス部Ｒが備えられている。前述したように第２凹部３６には嵌合孔部３６Ａが形成され、この嵌合孔部３６Ａの内端側（回転軸芯側）に接続する第２解除油路２３Ｂにオリフィス部Ｒが接続している。 In particular, an orifice portion R as a delay portion is provided in the oil passage system so as to suppress the flow of hydraulic oil supplied from the main release oil passage 23 to the second withdrawing / retracting member 32 through the second release oil passage 23B. Is provided. As described above, the fitting portion 36A is formed in the second recess 36, and the orifice portion R is connected to the second release oil passage 23B connected to the inner end side (rotating shaft core side) of the fitting hole portion 36A. doing.

オリフィス部Ｒは、図５、図６に示すように、第２解除油路２３Ｂの内部に移動自在に収容されたボール２６（流体制御体の一例）と、このボール２６が当接するホーン状の当接面２７Ｓを有し第２解除油路２３Ｂに嵌め込まれるリング状のシート２７と、当接面２７Ｓからボール２６を離間させる付勢力を与えるようにシート２７とボール２６との間に介装されるスプリング２８とを備え、この第２解除油路２３Ｂには、当接面２７Ｓにボール２６が当接した場合にも作動油の流れを許すようにシート２７の内周には溝部２７Ａが形成されている。また、この溝部２７Ａにおける流路断面積を第１解除油路２３Ａの流路断面積より小さくすることにより第２解除油路２３Ｂに流れる作動油に対して、第１解除油路２３Ａより高い流路抵抗を設定している。 As shown in FIGS. 5 and 6, the orifice portion R includes a ball 26 (an example of a fluid control body) movably accommodated in the second release oil passage 23 </ b> B, and a horn-like shape with which the ball 26 abuts. A ring-shaped seat 27 having a contact surface 27S and fitted in the second release oil passage 23B, and an intervening space between the seat 27 and the ball 26 so as to apply a biasing force to separate the ball 26 from the contact surface 27S. The second release oil passage 23B has a groove 27A on the inner periphery of the seat 27 so as to allow the flow of hydraulic oil even when the ball 26 comes into contact with the contact surface 27S. Is formed. In addition, by making the flow passage cross-sectional area in the groove 27A smaller than the flow passage cross-sectional area of the first release oil passage 23A, the flow of fluid higher than that of the first release oil passage 23A with respect to the hydraulic oil flowing through the second release oil passage 23B Road resistance is set.

この構成により、オリフィス部Ｒは、主解除油路２３から第２出退部材３２に作動油が供給される場合には作動油の圧力によりボール２６が当接面２７Ｓに当接することで溝部２７Ａにのみ作動油を流す状態に切り換えて（流路面積を小さくして）作動油の流れを抑制し、作動油を排出する場合にはボール２６が当接面２７Ｓから離間して制限することなく作動油を排出する。このオリフィス部Ｒは、内部ロータ１２の回転時に遠心力によりボール２６が当接面２７Ｓに当接する現象をスプリング２８の付勢力で阻止しており、この付勢力が作用する状態でボール２６に当接してボール２６の位置を決める規制ピン２９を第２解除油路２３Ｂの内部に形成している。 With this configuration, when the hydraulic oil is supplied from the main release oil passage 23 to the second extension / retraction member 32, the orifice portion R causes the groove 26A to come into contact with the contact surface 27S by the pressure of the hydraulic oil. In this case, the flow of the hydraulic oil is switched to a state where the flow of the hydraulic oil is reduced (the flow passage area is reduced) to suppress the flow of the hydraulic oil, and when the hydraulic oil is discharged, the ball 26 is not limited to be separated from the contact surface 27S. Drain the hydraulic oil. The orifice R prevents the phenomenon that the ball 26 abuts against the abutment surface 27S due to centrifugal force when the internal rotor 12 rotates by the urging force of the spring 28. A regulation pin 29 that contacts and determines the position of the ball 26 is formed inside the second release oil passage 23B.

このオリフィス部Ｒを備えたことにより、中間ロック位相Ｐ１にある状態で主解除油路２３に作動油を供給した場合には、第１凹部３５から第１出退部材３１に対して迅速に作動油を供給し、短時間のうちに第１出退部材３１を第１凹部３５から抜き出す。これに対して、第２凹部３６に作動油が供給される際にはオリフィス部Ｒにおいて作動油の流れが制限されるため、第２出退部材３２の作動タイミングを、第１出退部材３１の作動タイミングより遅らせることが可能となる。 By providing this orifice portion R, when hydraulic fluid is supplied to the main release oil passage 23 in the state of the intermediate lock phase P1, it operates quickly from the first recess 35 to the first retracting member 31. Oil is supplied, and the first withdrawal member 31 is extracted from the first recess 35 in a short time. On the other hand, when the hydraulic oil is supplied to the second recess 36, the flow of the hydraulic oil is restricted in the orifice portion R. Therefore, the operation timing of the second extension / retraction member 32 is set to the first extension / retraction member 31. It becomes possible to delay later than the operation timing.

従って、第１出退部材３１が第１凹部３５から抜け出した後にも、第２出退部材３２が第２凹部３６に嵌り込んだ状態を維持する。これとは逆に、作動油を排出する場合にはボール２６が当接面２７Ｓから離間して制限することなく作動油を排出する。 Therefore, even after the first withdrawing / retracting member 31 has been withdrawn from the first recess 35, the state in which the second withdrawing / retracting member 32 is fitted into the second recess 36 is maintained. On the contrary, when the hydraulic oil is discharged, the hydraulic oil is discharged without limiting the ball 26 apart from the contact surface 27S.

このように第１出退部材３１に対して第２出退部材３２が遅延して作動する現象を利用することで、第１出退部材３１の抜き出しを確実に行いながら、第２出退部材３２を第２凹部３６に嵌り込む状態を維持し、中間ロック位相Ｐ１から遅角側ロック位相Ｐ２への移行を確実に行えるようにしている。 Thus, by utilizing the phenomenon in which the second withdrawing / retracting member 32 is operated with a delay relative to the first withdrawing / withdrawing member 31, the second withdrawing / withdrawing member 31 can be reliably extracted while the first withdrawing / withdrawing member 31 is reliably extracted. 32 is maintained in the second recess 36, so that the transition from the intermediate lock phase P1 to the retard side lock phase P2 can be reliably performed.

尚、遅延部としてのオリフィス部Ｒを、ボール２６に代えてポペット弁（流体制御体の一例）を用いることや、ボール２６やポペットが備えられた流路と並列にオリフィス用の流路を備えて構成しても良い。 Note that the orifice portion R as the delay portion is replaced with a poppet valve (an example of a fluid control body) instead of the ball 26, or an orifice passage is provided in parallel with the passage provided with the ball 26 or the poppet. May be configured.

〔弁開閉時期制御装置の油圧制御部〕
図１に示すように、エンジンＥには、エンジンＥの駆動力でオイルパンの潤滑油を吸引して作動油として送り出す油圧ポンプ２０を備えている。本発明の内燃機関制御システムでは、油圧ポンプ２０からの作動油を弁開閉時期制御装置１０の進角室Ｃａと遅角室Ｃｂとの一方を選択して供給する電磁操作型の位相制御弁２４と、油圧ポンプ２０からの作動油を主解除油路２３に供給する電磁操作型の解除制御弁２５とを備えている。特に、油圧ポンプ２０と、位相制御弁２４と、解除制御弁２５と、作動油が給排される油路とを併せて弁開閉時期制御装置１０の油圧制御部が構成されている。 [Hydraulic control part of valve timing control device]
As shown in FIG. 1, the engine E includes a hydraulic pump 20 that sucks the lubricating oil in the oil pan with the driving force of the engine E and sends it out as hydraulic oil. In the internal combustion engine control system of the present invention, the electromagnetically operated phase control valve 24 supplies hydraulic oil from the hydraulic pump 20 by selecting one of the advance chamber Ca and the retard chamber Cb of the valve timing control device 10. And an electromagnetically operated release control valve 25 for supplying hydraulic oil from the hydraulic pump 20 to the main release oil passage 23. In particular, the hydraulic pump 20, the phase control valve 24, the release control valve 25, and the oil passage through which hydraulic oil is supplied and discharged constitute the hydraulic control unit of the valve opening / closing timing control device 10.

位相制御弁２４は、制御信号により進角ポジションと遅角ポジションと中立ポジションとに操作自在な電磁弁として構成されている。つまり、進角ポジションでは、油圧ポンプ２０の作動油を進角制御油路２１から進角室Ｃａに供給するとともに遅角室Ｃｂの作動油を遅角制御油路２２により排出する。遅角ポジションでは、油圧ポンプ２０の作動油を遅角制御油路２２から遅角室Ｃｂに供給するとともに進角室Ｃａの動油を進角制御油路２１により排出する。中立ポジションでは、進角室Ｃａと遅角室Ｃｂとの何れにも作動油を供給しない。 The phase control valve 24 is configured as an electromagnetic valve that can be operated to an advance position, a retard position, and a neutral position by a control signal. That is, at the advance angle position, the hydraulic oil of the hydraulic pump 20 is supplied from the advance angle control oil passage 21 to the advance angle chamber Ca and the hydraulic oil in the retard angle chamber Cb is discharged by the delay angle control oil passage 22. In the retard position, the hydraulic oil of the hydraulic pump 20 is supplied from the retard control oil passage 22 to the retard chamber Cb, and the fluid in the advance chamber Ca is discharged through the advance control oil passage 21. In the neutral position, no hydraulic oil is supplied to either the advance chamber Ca or the retard chamber Cb.

解除制御弁２５は、制御信号によりアンロックポジションとロックポジションとに操作自在な電磁弁として構成されている。つまり、アンロックポジションでは、油圧ポンプ２０の作動油を主解除油路２３から第１凹部３５と第２凹部３６と第３凹部３７とに供給する。ロックポジションでは、主解除油路２３から作動油を排出して第１出退部材３１と第２出退部材３２との嵌り込みを可能にする。 The release control valve 25 is configured as an electromagnetic valve that can be operated to an unlock position and a lock position by a control signal. That is, in the unlock position, the hydraulic oil of the hydraulic pump 20 is supplied from the main release oil passage 23 to the first recess 35, the second recess 36, and the third recess 37. In the locked position, the hydraulic oil is discharged from the main release oil passage 23 so that the first withdrawing / withdrawing member 31 and the second withdrawing / withdrawing member 32 can be fitted.

〔制御構成〕
エンジン制御ユニット４０は、シャフトセンサ１Ｓと、イグニッションスイッチ４３と、アクセルペダルセンサ４４と、ブレーキペダルセンサ４５と、位相検出センサ４６とからの信号が入力する。このエンジン制御ユニット４０は、スタータモータＭを制御し、燃料制御装置５を制御し、点火制御装置６を制御する信号を出力すると共に、位相制御弁２４と解除制御弁２５を制御する信号を出力する。 [Control configuration]
The engine control unit 40 receives signals from the shaft sensor 1S, the ignition switch 43, the accelerator pedal sensor 44, the brake pedal sensor 45, and the phase detection sensor 46. The engine control unit 40 controls the starter motor M, controls the fuel control device 5, outputs a signal for controlling the ignition control device 6, and outputs a signal for controlling the phase control valve 24 and the release control valve 25. To do.

イグニッションスイッチ４３は、システムを起動させるスイッチとして構成され、ＯＮ操作によりエンジンＥを始動し、ＯＦＦ操作によりエンジンＥを停止させる。また、ＯＮ操作された場合には、アイドルストップ制御によるエンジンＥの自動停止と自動始動とが可能なシステム起動状態に達する。 The ignition switch 43 is configured as a switch for starting the system, and starts the engine E by an ON operation and stops the engine E by an OFF operation. Further, when the ON operation is performed, a system activation state is reached in which the engine E can be automatically stopped and automatically started by the idle stop control.

アクセルペダルセンサ４４は、アクセルペダル（図示せず）の踏み込み量を検出し、ブレーキペダルセンサ４５は、ブレーキペダル（図示せず）の踏み込みを検出する。 The accelerator pedal sensor 44 detects the amount of depression of an accelerator pedal (not shown), and the brake pedal sensor 45 detects depression of a brake pedal (not shown).

機関制御部４１は、イグニッションスイッチ４３の操作に基づいてエンジンＥの始動と停止とを実現すると共に、エンジンＥがアイドリング状態で停車した際にエンジンＥを一時的に停止するアイドルストップ制御を実現する。 The engine control unit 41 realizes start and stop of the engine E based on the operation of the ignition switch 43 and realizes idle stop control for temporarily stopping the engine E when the engine E stops in an idling state. .

位相制御部４２は、エンジンＥの稼動時に弁開閉時期制御装置１０による吸気弁のタイミング制御を行い、エンジンＥが停止する際の状況に基づいて弁開閉時期制御装置１０の相対回転位相を設定し、ロック機構によるロック状態に移行を実現する。 The phase control unit 42 performs the intake valve timing control by the valve opening / closing timing control device 10 during operation of the engine E, and sets the relative rotation phase of the valve opening / closing timing control device 10 based on the situation when the engine E stops. The transition to the locked state by the lock mechanism is realized.

〔制御形態：アイドルストップ制御〕
アイドルストップ制御は、ブレーキペダルを踏み込んで停車した際に（アクセルペダルが操作されない状態で）、エンジンＥを一時的に停止し、ブレーキペダルの踏み操作が解除された際にエンジンＥを始動するように制御形態が設定されている。これにより無駄な燃料消費を抑制して燃費が向上する。 [Control form: Idle stop control]
In the idle stop control, when the brake pedal is depressed to stop (when the accelerator pedal is not operated), the engine E is temporarily stopped, and the engine E is started when the brake pedal is released. The control mode is set in Thereby, useless fuel consumption is suppressed and fuel consumption is improved.

アイドルストップ制御によりエンジンＥを停止させる場合には、解除制御弁２５をアンロックポジションに操作保持することで、図１０に示すように、第１出退部材３１と第２出退部材３２との何れも内部ロータ１２の外周面から僅かに浮かせた状態で、位相制御弁２４を操作して遅角室Ｃｂに作動油を供給することで相対回転位相を遅角方向Ｓｂに変位させる。これにより相対回転位相が最遅角の近傍に達した場合には解除制御弁２５をロックポジションに操作することにより第１出退部材３１を嵌り込み可能な状態にしておき、相対回転位相が最遅角に達した時点で、図４、図１１に示すように、第１出退部材３１の第３凹部３７に嵌り込む状態に移行する。このように相対回転位相が最遅角ロック位相Ｐ３に達した時点で最遅角ロック機構Ｌ３によるロック状態に達し、機関制御部４１は、燃料制御装置５により燃焼室への燃料供給を停止すると共に点火制御装置６による点火を停止してエンジンＥを停止させる。 When the engine E is stopped by the idle stop control, the release control valve 25 is operated and held at the unlock position, so that as shown in FIG. In either case, the relative rotation phase is displaced in the retarding direction Sb by operating the phase control valve 24 and supplying hydraulic oil to the retarding chamber Cb in a state of being slightly lifted from the outer peripheral surface of the inner rotor 12. Thus, when the relative rotational phase reaches the vicinity of the most retarded angle, the release control valve 25 is operated to the lock position so that the first retracting member 31 can be fitted, and the relative rotational phase is at the maximum. When the retard angle is reached, as shown in FIG. 4 and FIG. 11, the state shifts to a state of fitting into the third recess 37 of the first retracting member 31. Thus, when the relative rotation phase reaches the most retarded angle lock phase P3, the most retarded angle lock mechanism L3 reaches the locked state, and the engine control unit 41 stops the fuel supply to the combustion chamber by the fuel control device 5. At the same time, the ignition by the ignition control device 6 is stopped and the engine E is stopped.

このアイドルストップ制御では、エンジンＥが高温状態でエンジンＥの始動を行えるため混合気の点火が容易である。また、相対回転位相を最遅角に設定してクランキングを行った場合には、吸気圧縮比が低いためクランクシャフト１の回転を軽負荷で円滑に行える。このような理由から、アイドルストップ制御でエンジンＥを停止させる場合には、最遅角ロック機構Ｌ３により最遅角ロック位相Ｐ３でロックしており、ブレーキペダルの踏み操作が解除され、エンジンＥを始動する際にはスタータモータＭによるクランキングを開始する。 In this idle stop control, the engine E can be started at a high temperature, so that the air-fuel mixture is easily ignited. In addition, when cranking is performed with the relative rotation phase set to the most retarded angle, the crankshaft 1 can be smoothly rotated with a light load because the intake compression ratio is low. For this reason, when the engine E is stopped by the idle stop control, the engine is locked at the most retarded angle lock phase P3 by the most retarded angle lock mechanism L3, and the stepping operation of the brake pedal is released. When starting, cranking by the starter motor M is started.

このクランキングによりクランクシャフト１の回転速度が設定値に達した後に、位相制御部４２が解除制御弁２５をアンロックポジションに操作することで第１出退部材３１を第３凹部３７から抜き出して最遅角ロック機構Ｌ３のロックを解除する。この制御と並行して位相制御弁２４を進角ポジションに操作することで相対回転位相を進角方向Ｓａへ移行させながら、燃料制御装置５による燃焼室への燃料供給を行い、点火制御装置６により点火プラグでの点火を行うことでエンジンＥを始動させる。 After the crankshaft 1 has reached the set value due to cranking, the phase control unit 42 operates the release control valve 25 to the unlock position to extract the first retracting member 31 from the third recess 37. The lock of the most retarded angle locking mechanism L3 is released. In parallel with this control, by operating the phase control valve 24 to the advance angle position, the fuel control device 5 supplies fuel to the combustion chamber while shifting the relative rotation phase in the advance angle direction Sa, and the ignition control device 6. The engine E is started by igniting with a spark plug.

〔制御形態：通常ストップ制御〕
エンジンＥが稼動している状況でイグニッションスイッチ４３が人為的にＯＦＦ操作された場合には、位相検出センサ４６の検出結果に基づき位相制御部４２が位相制御弁２４を操作して、進角室Ｃａ又は遅角室Ｃｂに作動油を供給し、相対回転位相を図２、図７に示す中間ロック位相Ｐ１まで移行させる制御が行われる。この移行時には解除制御弁２５はアンロックポジションにあり、中間ロック位相Ｐ１の近傍に達すると解除制御弁２５をロックポジションに切り換え、中間ロック位相Ｐ１において中間ロック機構Ｌ１によるロック状態に達する。 [Control form: Normal stop control]
When the ignition switch 43 is artificially turned off while the engine E is operating, the phase control unit 42 operates the phase control valve 24 based on the detection result of the phase detection sensor 46 to advance the advance chamber. Control is performed to supply hydraulic oil to Ca or the retarded angle chamber Cb and shift the relative rotational phase to the intermediate lock phase P1 shown in FIGS. At this transition, the release control valve 25 is in the unlock position, and when it reaches the vicinity of the intermediate lock phase P1, the release control valve 25 is switched to the lock position, and reaches the locked state by the intermediate lock mechanism L1 in the intermediate lock phase P1.

尚、このロック状態では、第１出退部材３１が第１スプリング３１Ｓの付勢力により第１凹部３５に嵌り込んだ状態で、第１凹部３５の内面の進角方向Ｓａの端部に当接する。また、第２出退部材３２は第２スプリング３２Ｓの付勢力により第２凹部３６に嵌り込み、第２凹部３６の内面の遅角方向Ｓｂの端部に当接する。 In this locked state, the first retracting member 31 is in contact with the end portion of the inner surface of the first recess 35 in the advance angle direction Sa while being fitted into the first recess 35 by the urging force of the first spring 31S. . Further, the second retracting member 32 is fitted into the second recess 36 by the urging force of the second spring 32 </ b> S, and abuts on the end of the inner surface of the second recess 36 in the retarding direction Sb.

この移行の後に、機関制御部４１が燃料制御装置５により燃焼室への燃料供給を停止すると共に、点火制御装置６による点火を停止する。この中間ロック位相Ｐ１は、低温状態にあるエンジンＥを良好に始動できる相対回転位相である。 After this transition, the engine control unit 41 stops the fuel supply to the combustion chamber by the fuel control device 5 and stops the ignition by the ignition control device 6. The intermediate lock phase P1 is a relative rotation phase that can satisfactorily start the engine E in a low temperature state.

〔制御形態：通常スタート制御〕
次に、エンジンＥが低温にある状態でイグニッションスイッチ４３が人為的にＯＮ操作された場合には、機関制御部４１が、スタータモータＭを回転駆動させ、燃料制御装置５による燃焼室への燃料供給を行い、点火制御装置６により点火プラグでの点火を行うことでエンジンＥを始動させる。 [Control form: Normal start control]
Next, when the ignition switch 43 is artificially turned on while the engine E is at a low temperature, the engine control unit 41 drives the starter motor M to rotate, and the fuel control device 5 supplies fuel to the combustion chamber. Supply is performed, and the engine E is started by igniting with a spark plug by the ignition control device 6.

エンジンＥが始動したことを位相検出センサ４６からの検出信号で判定し、このエンジンＥの始動の後には、位相制御部４２が、相対回転位相を遅角側ロック位相Ｐ２に変位させ、遅角側ロック機構Ｌ２によるロック状態に移行させる制御が行われる。 It is determined by the detection signal from the phase detection sensor 46 that the engine E has been started. After the engine E has been started, the phase control unit 42 displaces the relative rotational phase to the retard side lock phase P2, and retards the retard angle. Control to shift to the locked state by the side lock mechanism L2 is performed.

具体的な制御形態として、エンジンＥが始動して所定の回転速度に達したことを、シャフトセンサ１Ｓ等からの検出信号に基づいてエンジン制御ユニット４０が判別した場合には、位相制御部４２が解除制御弁２５を、設定時間だけアンロックポジションに操作する。この操作により、主解除油路２３に設定時間だけ作動油が供給される。 As a specific control mode, when the engine control unit 40 determines that the engine E has started and has reached a predetermined rotational speed based on a detection signal from the shaft sensor 1S or the like, the phase control unit 42 The release control valve 25 is operated to the unlock position for a set time. By this operation, the hydraulic oil is supplied to the main release oil passage 23 for a set time.

このように設定時間だけ作動油が供給されることにより、作動油は第１解除油路２３Ａから直接的に第１出退部材３１に作用して第１出退部材３１を第１凹部３５から抜き出される。これと同時に第２解除油路２３Ｂにも作動油が供給されるが、この第２解除油路２３Ｂから第２出退部材３２との間の油路にはオリフィス部Ｒが形成されているため、第２出退部材３２に作用する作動油の圧力上昇が抑制され、第２出退部材３２の抜き出し方向への作動は遅れる。 By supplying the hydraulic oil for the set time in this way, the hydraulic oil directly acts on the first withdrawing / retracting member 31 from the first release oil passage 23A, and the first withdrawing / retracting member 31 is removed from the first recess 35. Extracted. At the same time, hydraulic fluid is supplied to the second release oil passage 23B, but an orifice R is formed in the oil passage between the second release oil passage 23B and the second retracting member 32. And the pressure rise of the hydraulic fluid which acts on the 2nd withdrawal / retraction member 32 is suppressed, and the operation | movement to the extraction direction of the 2nd withdrawal / retraction member 32 is overdue.

具体的な作動形態として、第２解除油路２３Ｂに作動油が供給された場合には、第２解除油路２３Ｂに流れる作動油の圧力によりボール２６が当接面２７Ｓに当接するため、溝部２７Ａに制限された量の作動油が流れ、しかも、第２凹部３６に流れる作動油も、この第２凹部３６によって制限される。従って、図８に示すように、第１出退部材を第１凹部から抜き出したタイミングで、第２出退部材３２を第２凹部３６に嵌り込む状態に維持させることが可能となる。 As a specific operation mode, when the hydraulic oil is supplied to the second release oil passage 23B, the ball 26 comes into contact with the contact surface 27S by the pressure of the hydraulic oil flowing through the second release oil passage 23B. The amount of hydraulic oil limited to 27A flows, and the hydraulic oil flowing to the second recess 36 is also limited by the second recess 36. Therefore, as shown in FIG. 8, the second retracting member 32 can be maintained in a state of fitting into the second recessed portion 36 at the timing when the first retracting member is extracted from the first recessed portion.

また、第１出退部材３１を第１凹部３５から抜き出したタイミングで相対回転位相は遅角方向Ｓｂに変位を開始する。この遅角方向Ｓｂへの変位時には第２出退部材３２が第２凹部３６に嵌り込んだ状態にあるので、主解除油路２３に対する作動油の供給が停止した後に第２出退部材３２を第２凹部３６の底部に接触する状態に復帰する。そして、相対回転位相が遅角側ロック位相Ｐ２に達すると、図３、図９に示すように、第２出退部材３２が第２凹部３６の嵌合孔部３６Ａに嵌り込み、相対回転位相が遅角側ロック位相Ｐ２にロックされる。 The relative rotational phase starts to be displaced in the retarding direction Sb at the timing when the first retracting member 31 is extracted from the first recess 35. At the time of displacement in the retarding direction Sb, the second withdrawing member 32 is in a state of being fitted into the second recess 36, so that the second withdrawing member 32 is moved after the supply of hydraulic oil to the main release oil passage 23 is stopped. The state returns to contact with the bottom of the second recess 36. When the relative rotational phase reaches the retard side lock phase P2, as shown in FIGS. 3 and 9, the second retracting member 32 is fitted into the fitting hole 36A of the second recess 36, and the relative rotational phase is reached. Is locked to the retard side lock phase P2.

特に、この通常スタート制御では作動油の温度が低く、作動油の粘性が高い状況でエンジンＥを始動する。このエンジンＥの始動時には油圧ポンプ２０から第２解除油路２３Ｂを介して第２出退部材３２に供給される作動油に対してオリフィス部Ｒから作用する抵抗は大きく、第２出退部材３２に作用する圧力上昇も緩速で行われる。従って、主解除油路２３に作動油を供給した後に、第１出退部材３１の規制が解除された後に第２出退部材３２の規制が解除されるまでの時間を長く設定することが可能となり、先述した設定時間を厳密に設定しなくても、第１出退部材３１だけを確実に抜き出して、遅角側ロック位相Ｐ２に移行できる。 In particular, in this normal start control, the engine E is started in a situation where the temperature of the hydraulic oil is low and the viscosity of the hydraulic oil is high. When the engine E is started, the resistance acting from the orifice portion R on the hydraulic oil supplied from the hydraulic pump 20 to the second withdrawing / retracting member 32 via the second release oil passage 23 </ b> B is large, and the second withdrawing / retracting member 32. The pressure increase acting on the slab is also slow. Accordingly, it is possible to set a longer time after the hydraulic oil is supplied to the main release oil passage 23 and until the restriction of the second retracting member 32 is released after the restriction of the first retracting member 31 is released. Thus, even if the set time described above is not strictly set, only the first withdrawing / retracting member 31 can be reliably extracted and the retard side lock phase P2 can be shifted.

尚、この遅角側ロック位相Ｐ２では、アイドリング運転時のＨＣ排出量を低減できる。 In this retard side lock phase P2, the amount of HC discharged during idling operation can be reduced.

〔実施形態の作用・効果〕
このように本発明では、アイドルストップ制御によりエンジンＥを停止する場合には、相対回転位相を最遅角ロック位相Ｐ３まで変位させ、最遅角ロック機構Ｌ３でロックする状態に移行することで、この後にエンジンＥを始動する場合には低い圧縮比により軽快なクランキングを実現している。 [Operation / Effect of Embodiment]
As described above, in the present invention, when the engine E is stopped by the idle stop control, the relative rotational phase is displaced to the most retarded angle lock phase P3, and the state is shifted to the state of being locked by the most retarded angle lock mechanism L3. When engine E is started after this, light cranking is realized by a low compression ratio.

また、運転者がイグニッションスイッチ４３をＯＦＦ操作してエンジンＥを停止させる場合には、相対回転位相を中間ロック位相Ｐ１まで変位させて中間ロック機構Ｌ１によるロック状態に移行する。これによりエンジンＥが低温の状態でもエンジンＥの始動を確実に行えるようにする。この後に、運転者がイグニッションスイッチ４３をＯＮ操作した場合には、クランキングを行い、通常の制御によりエンジンＥを始動させる。 Further, when the driver turns off the ignition switch 43 to stop the engine E, the relative rotational phase is displaced to the intermediate lock phase P1, and the state is shifted to the locked state by the intermediate lock mechanism L1. This ensures that the engine E can be started even when the engine E is at a low temperature. Thereafter, when the driver turns on the ignition switch 43, cranking is performed and the engine E is started by normal control.

このエンジンＥの始動の後には、主解除油路２３に対して設定時間だけ作動油を供給する制御を行うだけで、第２出退部材３２を第２凹部３６に嵌め込んだ状態を維持しながら、第１出退部材３１を第１凹部３５から抜き出す状態に移行できる。そして、遅角側ロック位相Ｐ２への移行を確実に行わせ、最遅角ロック機構Ｌ３でのロック状態に移行してアイドリング運転時のＨＣ排出量を低減できる。 After the engine E is started, the state in which the second retracting member 32 is fitted in the second recess 36 is maintained only by controlling the supply of hydraulic oil to the main release oil passage 23 for a set time. However, it is possible to shift to a state in which the first withdrawal member 31 is extracted from the first recess 35. Then, the shift to the retard side lock phase P2 can be performed reliably, and the HC exhaust amount during idling can be reduced by shifting to the locked state of the most retarded angle lock mechanism L3.

このように第１出退部材３１と第２出退部材３２とに対して単一の主解除油路２３から作動油を供給する構成であるので、主解除油路２３に作動油の供給と排出とを行う２位置切換型で、出力側のポートが単一となる解除制御弁２５を使用できることになる。従って、第１出退部材３１と第２出退部材３２とに対して選択して作動油の給排を行うように出力側のポートが２つ備えるものと比較して解除制御弁２５の構成が単純となり、この解除制御弁２５と第１出退部材３１と第２出退部材３２とに作動油を給排するための油路も２つ形成しなくて済む。 Thus, since it is the structure which supplies hydraulic fluid from the single main cancellation | release oil path 23 with respect to the 1st withdrawal / retraction member 31 and the 2nd withdrawal / retraction member 32, supply of hydraulic fluid to the main cancellation | release oil path 23, It is possible to use a release control valve 25 that is a two-position switching type that performs discharging and has a single output port. Therefore, the configuration of the release control valve 25 is compared with that in which two ports on the output side are provided so as to selectively supply and discharge the hydraulic oil with respect to the first withdrawing member 31 and the second withdrawing member 32. Therefore, it is not necessary to form two oil passages for supplying and discharging hydraulic oil to / from the release control valve 25, the first withdrawing / withdrawing member 31, and the second withdrawing / withdrawing member 32.

〔別実施形態〕
本発明は、上記した実施形態以外に以下のように構成しても良い。 [Another embodiment]
The present invention may be configured as follows in addition to the embodiment described above.

（ａ）図１２に示すように、オリフィス部Ｒとして第２凹部３６の流路断面積を小さくすることで、この第２凹部３６の一部で第２のオリフィス部Ｒを構成する。つまり、第２凹部３６における流路は、この第２凹部３６と、この外部に位置する外部ロータ１１の内面との間の空間で形成されるものであり、この第２凹部３６を浅く形成することにより、流路断面積を小さくしてオリフィス部Ｒを構成するのである。特に、本発明では、オリフィス部Ｒとして、実施形態で説明したようにボール２６を用いたものと、第２凹部３６で構成されるオリフィス部Ｒとの２つでオリフィス部Ｒを備えても良い。 (A) As shown in FIG. 12, the second orifice portion R is constituted by a part of the second recess portion 36 by reducing the flow path cross-sectional area of the second recess portion 36 as the orifice portion R. That is, the flow path in the second recess 36 is formed in a space between the second recess 36 and the inner surface of the external rotor 11 located outside, and the second recess 36 is formed shallow. Thereby, the flow path cross-sectional area is reduced to configure the orifice portion R. In particular, in the present invention, the orifice portion R may be provided as two orifice portions R: the one using the ball 26 as described in the embodiment and the orifice portion R constituted by the second recess 36. .

（ｂ）実施形態では、遅延部の具体構成としてオリフィス部Ｒを採用していたが、この遅延部として、第２解除油路２３Ｂから分岐する分岐油路に、アキュムレータのように、圧力上昇時に作動油の分岐油路の側に逃がす空間を備えて構成しても良い。遅延部を構成することにより、主解除油路２３から第２出退部材３２に作動油が供給された場合には、この作動油の流れを分岐油路の方向に逃がすことにより、第２出退部材３２に作用する圧力の上昇を遅延させる形態で抑制することになり、この第２出退部材３２の第２凹部３６からの抜き出しを抑制できる。 (B) In the embodiment, the orifice portion R is adopted as a specific configuration of the delay portion. However, as the delay portion, the branch oil passage branched from the second release oil passage 23B is connected to the branch oil passage when the pressure rises like an accumulator. You may comprise with the space which escapes to the branch oil path side of hydraulic fluid. By configuring the delay portion, when the hydraulic oil is supplied from the main release oil passage 23 to the second withdrawal / retreat member 32, the flow of the hydraulic oil is released in the direction of the branch oil passage, thereby The increase in the pressure acting on the retracting member 32 is suppressed in a delayed manner, and the extraction of the second retracting member 32 from the second recess 36 can be suppressed.

（ｃ）作動油の温度を計測する温度センサを備え、この温度センサの検出結果に基づいて、主解除油路２３に作動油を供給する設定時間を調節するように制御形態を設定する。このように制御形態を設定することにより、例えば、季節により作動油の温度が異なる場合でも、第１出退部材３１だけを第１凹部３５から確実に抜き出す制御を実現する。 (C) A temperature sensor for measuring the temperature of the hydraulic oil is provided, and the control mode is set so as to adjust the set time for supplying the hydraulic oil to the main release oil passage 23 based on the detection result of the temperature sensor. By setting the control mode in this way, for example, even when the temperature of the hydraulic oil varies depending on the season, control for reliably extracting only the first withdrawal member 31 from the first recess 35 is realized.

（ｄ）相対回転位相を中間ロック位相Ｐ１から遅角側ロック位相Ｐ２に変位させる場合に、遅角側ロック位相Ｐ２を越えて最遅角の方向に変位していることを検出した場合に相対回転位相を進角方向Ｓａに変位させる制御形態を設定する。このように制御形態を設定することにより、遅角側ロック位相Ｐ２に確実にロックする制御が可能となる。また、このように遅角側ロック位相Ｐ２にロックできない場合には、主解除油路２３に作動油を供給する設定時間を短縮するように制御形態を設定しても良い。 (D) When the relative rotational phase is displaced from the intermediate lock phase P1 to the retard side lock phase P2, the relative rotational phase is detected when it is detected that the phase is shifted in the direction of the most retarded angle beyond the retard side lock phase P2. A control mode for displacing the rotational phase in the advance direction Sa is set. By setting the control form in this way, it is possible to perform control that reliably locks to the retard side lock phase P2. Further, when it is not possible to lock to the retard side lock phase P2 in this way, the control mode may be set so as to shorten the set time for supplying hydraulic oil to the main release oil passage 23.

（ｅ）第１出退部材３１と第２出退部材３２とを、内部ロータ１２に対して軸芯Ｘと平行する方向にスライド移動自在に備え、この第１出退部材３１と第２出退部材３２とが嵌り込む第１凹部３５と第２凹部３６とをフロントプレート１４又はリヤプレート１５に形成する。このように構成することにより、第１出退部材３１と第２出退部材３２とに大径の部材を用い、強固なロック状態を現出することも可能となる。 (E) The first withdrawing member 31 and the second withdrawing member 32 are slidably movable in a direction parallel to the axis X with respect to the inner rotor 12, and the first withdrawing member 31 and the second withdrawing member 31 are provided. A first recess 35 and a second recess 36 into which the retracting member 32 is fitted are formed in the front plate 14 or the rear plate 15. By comprising in this way, it becomes possible to use a large diameter member for the 1st withdrawing / retracting member 31 and the 2nd withdrawing / retracting member 32, and to show a strong locked state.

（ｆ）第１出退部材３１と第２出退部材３２とを外部ロータ１１に備え、これらが嵌り込む第１凹部３５と第２凹部３６とを内部ロータ１２に備えても良い。 (F) The first retracting member 31 and the second retracting member 32 may be provided in the external rotor 11, and the first recess 35 and the second recess 36 into which these are fitted may be provided in the internal rotor 12.

本発明は、弁開閉時期制御装置の相対回転位相を最遅角と最進角との中間となる中間ロック位相でロックする中間ロック機構を備え、この中間ロック位相で内燃機関を始動した後に、これより遅角側の回転位相に維持する装置に利用することができる。 The present invention includes an intermediate lock mechanism that locks the relative rotation phase of the valve timing control device with an intermediate lock phase that is intermediate between the most retarded angle and the most advanced angle, and after starting the internal combustion engine with this intermediate lock phase, This can be used for a device that maintains the rotational phase on the retard side.

１クランクシャフト
３カムシャフト
１０弁開閉時期制御装置
１１駆動側回転部材（外部ロータ）
１２従動側回転部材（内部ロータ）
２３主解除流路（主解除油路）
２３Ａ第１解除流路（第１解除油路）
２３Ｂ第２解除流路（第２解除油路）
２４位相制御弁
２６流体制御体（ボール）
３１第１出退部材
３２第２出退部材
３５第１凹部
３６第２凹部
４０制御ユニット
Ｅ内燃機関（エンジン）
Ｃａ進角室
Ｃｂ遅角室
Ｓａ進角方向
Ｓｂ遅角方向
Ｌ１拘束機構（中間ロック機構）
Ｌ２規制機構（遅角側ロック機構）
Ｐ１中間ロック位相
Ｐ２遅角側ロック位相
Ｒ遅延部（オリフィス部） DESCRIPTION OF SYMBOLS 1 Crankshaft 3 Camshaft 10 Valve opening / closing timing control apparatus 11 Drive side rotation member (external rotor)
12 Driven side rotating member (internal rotor)
23 Main release passage (Main release passage)
23A 1st cancellation | release flow path (1st cancellation | release oil path)
23B 2nd cancellation | release flow path (2nd cancellation | release oil path)
24 Phase control valve 26 Fluid control body (ball)
31 1st retracting member 32 2nd retracting member 35 1st recessed part 36 2nd recessed part 40 Control unit E Internal combustion engine (engine)
Ca advance chamber Cb retard chamber Sa advance direction Sb retard direction L1 restraint mechanism (intermediate lock mechanism)
L2 restriction mechanism (retarding side locking mechanism)
P1 Intermediate lock phase P2 Delay angle side lock phase R Delay part (orifice part)

Claims

内燃機関のクランクシャフトと同期回転する駆動側回転部材と、
前記駆動側回転部材と同軸上に配置され前記内燃機関の弁開閉用のカムシャフトと一体回転する従動側回転部材とを備え、
流体の供給により前記駆動側回転部材と前記従動側回転部材との相対回転位相を遅角方向に変位させる遅角室と、流体の供給により前記相対回転位相を進角方向に変位させる進角室とが形成され、
前記駆動側回転部材と前記従動側回転部材との何れか一方の回転部材から他方の回転部材に向けて突出付勢される第１出退部材と第２出退部材とを備え、前記第１出退部材が突出状態で嵌り込む第１凹部と、前記第２出退部材が突出状態で嵌り込む第２凹部とを他方の回転部材に形成し、
相対回転位相が前記進角方向の作動端となる最進角と前記遅角方向の作動端となる最遅角との間の所定位相となる中間ロック位相と、相対回転位相が前記中間ロック位相より遅角方向となる遅角側ロック位相とが設定され、
前記第１出退部材が前記第１凹部に嵌り込むと同時に前記第２出退部材が前記第２凹部に嵌り込むことにより相対回転位相を前記中間ロック位相に拘束する拘束機構を有し、
前記第２出退部材が前記第２凹部に嵌り込んだ状態で、相対回転位相の遅角方向への変位を許容するように前記第２凹部が溝状に形成され、この遅角方向への相対回転位相の変位で前記第２出退部材が前記第２凹部の端部に当接することにより相対回転位相を前記遅角側ロック位相に規制する規制機構を有し、
前記第１出退部材を前記第１凹部から抜き出す方向に流体を供給する第１解除流路と、前記第２出退部材を前記第２凹部から抜き出す方向に流体を供給する第２解除流路とが、単一の主解除流路から流体が供給されるように構成され、前記第２解除流路から前記第２出退部材に供給される流体の流れを抑制する遅延部が備えられている弁開閉時期制御装置。 A drive-side rotating member that rotates synchronously with the crankshaft of the internal combustion engine;
A driven-side rotating member that is arranged coaxially with the drive-side rotating member and rotates integrally with a camshaft for opening and closing the valve of the internal combustion engine;
A retardation chamber that displaces the relative rotation phase of the driving-side rotation member and the driven-side rotation member in the retardation direction by supplying fluid, and an advance chamber that displaces the relative rotation phase in advance by supplying fluid. And formed,
A first advancing / retracting member and a second advancing / retracting member that are urged and projected from one of the driving side rotating member and the driven side rotating member toward the other rotating member; Forming a first recess into which the retracting member fits in a protruding state and a second recess into which the second retracting member fits in the projecting state;
An intermediate lock phase in which the relative rotation phase is a predetermined phase between the most advanced angle that is the working end in the advance direction and the most retarded angle that is the operation end in the retard direction, and the relative rotation phase is the intermediate lock phase The retard angle side lock phase that becomes the retard angle direction is set,
A restraining mechanism for restraining a relative rotational phase to the intermediate lock phase by fitting the first withdrawal member into the first recess and simultaneously fitting the second withdrawal member into the second recess;
In a state where the second retracting member is fitted in the second recess, the second recess is formed in a groove shape so as to allow a displacement of the relative rotational phase in the retard direction, and in this retard direction A regulation mechanism that regulates the relative rotational phase to the retard angle side lock phase by the second retracting member coming into contact with the end of the second recess by displacement of the relative rotational phase;
A first release channel for supplying fluid in a direction for extracting the first retracting member from the first recess, and a second release channel for supplying fluid in a direction for extracting the second retracting member from the second recess. Are provided such that a fluid is supplied from a single main release channel, and is provided with a delay unit that suppresses the flow of fluid supplied from the second release channel to the second withdrawing member. Valve opening / closing timing control device.

前記第２解除流路の流路断面積を、前記第１解除流路の流路断面積より小さく設定することにより前記遅延部が構成されている請求項１記載の弁開閉時期制御装置。 2. The valve opening / closing timing control device according to claim 1, wherein the delay unit is configured by setting a flow path cross-sectional area of the second release flow path smaller than a flow path cross-sectional area of the first release flow path.

流体が供給された際に第１解除流路に流れる流体の量を制限する位置に移動し、流体を送り出す際には第１解除流路に流れる流体を制限しない位置に移動する流量制御体を備えて前記遅延部が構成されている請求項１又は２記載の弁開閉時期制御装置。 A flow control body that moves to a position that restricts the amount of fluid that flows to the first release channel when the fluid is supplied, and moves to a position that does not limit the fluid that flows to the first release channel when the fluid is sent out; The valve opening / closing timing control device according to claim 1, wherein the delay unit is provided.

請求項１に記載の弁開閉時期制御装置の進角室と遅角室との一方を選択して流体を供給する位相制御弁と、主解除流路に流体を供給する解除制御弁とを備え、前記位相制御弁と前記解除制御弁とを制御する制御ユニットを備え、
前記制御ユニットは、相対回転位相が中間ロック位相にある状態で内燃機関の始動が行われた場合には、前記位相制御弁の制御により前記遅角室に流体を供給すると共に、前記解除制御弁を制御して設定時間だけ前記主解除流路に流体を供給する制御を行う内燃機関制御システム。 The valve opening / closing timing control device according to claim 1, comprising: a phase control valve that selects one of the advance chamber and the retard chamber and supplies fluid; and a release control valve that supplies fluid to the main release channel. A control unit for controlling the phase control valve and the release control valve,
When the internal combustion engine is started in a state where the relative rotational phase is in the intermediate lock phase, the control unit supplies fluid to the retard chamber by the control of the phase control valve, and the release control valve An internal combustion engine control system that controls the fluid to supply the fluid to the main release passage for a set time.

内燃機関のクランクシャフトと同期回転する駆動側回転部材と、
前記駆動側回転部材と同軸上に配置され前記内燃機関の弁開閉用のカムシャフトと一体回転する従動側回転部材とを備え、
流体の供給により前記駆動側回転部材と前記従動側回転部材との相対回転位相を遅角方向に変位させる遅角室と、流体の供給により前記相対回転位相を進角方向に変位させる進角室とが形成され、
前記駆動側回転部材と前記従動側回転部材との何れか一方の回転部材から他方の回転部材に向けて突出付勢される第１出退部材と第２出退部材とを備え、前記第１出退部材が突出状態で嵌り込む第１凹部と、前記第２出退部材が突出状態で嵌り込む第２凹部とを他方の回転部材に形成し、
前記第１出退部材を前記第１凹部から抜き出す方向に流体を供給する第１解除流路と、前記第２出退部材を前記第２凹部から抜き出す方向に流体を供給する第２解除流路とが、単一の主解除流路から供給されるように構成され、
前記主解除流路から前記第１出退部材及び前記第２出退部材に流体が供給される際に、前記第１出退部材に流体が供給開始されるタイミングと前記第２出退部材に流体が供給開始されるタイミングとが異なるように、前記第１解除流路または前記第２解除流路に流体の流れを抑制する遅延部が備えられている弁開閉時期制御装置。 A drive-side rotating member that rotates synchronously with the crankshaft of the internal combustion engine;
A driven-side rotating member that is arranged coaxially with the drive-side rotating member and rotates integrally with a camshaft for opening and closing the valve of the internal combustion engine;
A retardation chamber that displaces the relative rotation phase of the driving-side rotation member and the driven-side rotation member in the retardation direction by supplying fluid, and an advance chamber that displaces the relative rotation phase in advance by supplying fluid. And formed,
A first advancing / retracting member and a second advancing / retracting member that are urged and projected from one of the driving side rotating member and the driven side rotating member toward the other rotating member; Forming a first recess into which the retracting member fits in a protruding state and a second recess into which the second retracting member fits in the projecting state;
A first release channel for supplying fluid in a direction for extracting the first retracting member from the first recess, and a second release channel for supplying fluid in a direction for extracting the second retracting member from the second recess. Are configured to be supplied from a single main release channel,
When fluid is supplied from the main release channel to the first withdrawing / withdrawing member and the second withdrawing / withdrawing member, the timing at which the fluid starts to be supplied to the first withdrawing / leaving member and the second withdrawing / withdrawing member A valve opening / closing timing control device in which a delay portion that suppresses the flow of fluid is provided in the first release channel or the second release channel so that the timing at which the supply of fluid is started is different.