JPH0420964Y2 - - Google Patents
Info
- Publication number
- JPH0420964Y2 JPH0420964Y2 JP1985027339U JP2733985U JPH0420964Y2 JP H0420964 Y2 JPH0420964 Y2 JP H0420964Y2 JP 1985027339 U JP1985027339 U JP 1985027339U JP 2733985 U JP2733985 U JP 2733985U JP H0420964 Y2 JPH0420964 Y2 JP H0420964Y2
- Authority
- JP
- Japan
- Prior art keywords
- oil
- hydraulic
- intake
- chamber
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 238000002485 combustion reaction Methods 0.000 description 6
- 230000004043 responsiveness Effects 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000004044 response Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L2001/188—Fulcrums at upper surface
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Description
【考案の詳細な説明】
〔産業上の利用分野〕
本考案は油圧タペツトへの供給油圧補償装置に
係り、特に可変気筒内燃機関の吸・排気弁作動停
止装置に組み込まれる油圧タペツトへの供給油圧
を補償して吸・排気弁作動停止装置の応答性の向
上と吸・排気弁のリフトロスの減少とを計るよう
にした油圧タペツトへの供給油圧補償装置に関す
る。[Detailed description of the invention] [Field of industrial application] The present invention relates to a hydraulic pressure compensation device for a hydraulic tappet, and in particular, it relates to a hydraulic pressure compensation device for supplying hydraulic pressure to a hydraulic tappet incorporated in an intake/exhaust valve actuation stop device of a variable cylinder internal combustion engine. The present invention relates to a hydraulic pressure compensation device for supplying hydraulic pressure to a hydraulic tappet, which improves the responsiveness of an intake/exhaust valve operation stop device and reduces lift loss of the intake/exhaust valves by compensating for the above.
可変気筒内燃機関における休止気筒の吸・排気
弁の開閉作動を停止させる装置として、従来より
第２図に示すようなものが知られている。この
吸・排気弁作動停止装置ａは、図示されるよう
に、吸・排気弁ｂを開閉駆動させる動弁機構のロ
ツカアームｃの支点部ｄ（ロツカシヤフト）を油
圧タペツトｅ内に封入した油圧で支承するように
なしたものである。
2. Description of the Related Art A device shown in FIG. 2 is conventionally known as a device for stopping the opening/closing operation of intake and exhaust valves in a dormant cylinder in a variable cylinder internal combustion engine. As shown in the figure, this intake/exhaust valve operation stop device a supports a fulcrum part d (rock shaft) of a rocker arm c of a valve mechanism that drives the opening and closing of the intake and exhaust valves b using hydraulic pressure sealed in a hydraulic tappet e. This is what I did.
吸・排気弁ｂを作動させるときには、固定系ｆ
に設けたオイルギヤラリｇから逆止弁ｈを通じて
油圧タペツトｅの油圧室ｉ内に支承油を供給して
封入し、その封入油圧でプツシユロツドｊからの
突き上げ力の反力を得てロツカアームｃを規定位
置に支承する。その結果ロツカアームｃはその支
点部ｄを中心に往復揺動し、吸・排気弁ｂが開閉
作動されるようになつている。 When operating the intake/exhaust valve b, the fixed system f
Support oil is supplied and sealed into the hydraulic chamber i of the hydraulic tappet e from the oil gear g that is installed through the check valve h, and the sealed oil pressure obtains a reaction force to the thrusting force from the push rod j to move the rocker arm c to the specified position. support. As a result, the rocker arm c swings back and forth about its fulcrum d, and the intake and exhaust valves b are opened and closed.
また吸・排気弁ｂの作動を停止させるときに
は、針弁ｋを下方に延出させて逆止弁ｈを開放さ
せることで、油圧タペツトｅの油圧室ｉ内の支承
油をオイルギヤラリｇに対して流入出自在とさせ
る。その結果、油圧タペツトｅはプツシユロツド
ｊからの突き上げ力の反力を得ることができなく
なり、ロツカアームｃの支点部ｄを上下に昇降移
動させて突き上げ力を吸収し、吸・排気弁ｂの開
閉作動を停止させるようになつている。（特開昭
59−23020号公報等）
〔考案が解決しようとする問題点〕
ところで、上記従来の吸・排気弁作動停止装置
ａでは、オイルギヤラリｇ内に送給されてくる支
承油の油圧は内燃機関の回転数に相応して変動
し、機関回転数が低いとその油圧も低下してしま
うものであつた。このためそのような機関回転数
の低いときに、吸・排気弁作動停止装置ａを動か
して、吸・排気弁ｂを作動停止状態から作動状態
に移行させようとすると、オイルギヤラリｇ内の
油圧が低いので油圧タペツトｅの油圧室ｉ内に供
給する支承油の注入速度が低下し、油圧タペツト
ｅのリフト速度の応答性が悪くなる問題があつ
た。そしてその応答性の悪さによつて吸・排気弁
ｂのバルブリフトロスを生じさせていた。 Furthermore, when stopping the operation of the intake/exhaust valve b, by extending the needle valve k downward and opening the check valve h, the bearing oil in the hydraulic chamber i of the hydraulic tappet e is directed against the oil gear lary g. Allow inflow and outflow. As a result, the hydraulic tappet e cannot obtain the reaction force of the thrust force from the push rod j, and moves the fulcrum part d of the rocker arm c up and down to absorb the thrust force and open/close the intake/exhaust valve b. It is now possible to stop the (Tokukai Akira
59-23020, etc.) [Problems to be solved by the invention] By the way, in the above-mentioned conventional intake/exhaust valve actuation stop device a, the hydraulic pressure of the bearing oil fed into the oil gear g is dependent on the rotation of the internal combustion engine. The oil pressure would vary depending on the engine speed, and if the engine speed was low, the oil pressure would also drop. Therefore, when the engine speed is low, if you try to move the intake/exhaust valve operation stop device a to change the intake/exhaust valve b from the inoperative state to the operating state, the oil pressure in the oil gear g will decrease. Since the hydraulic pressure is low, the injection speed of bearing oil supplied into the hydraulic chamber i of the hydraulic tappet e decreases, causing a problem that the responsiveness of the lift speed of the hydraulic tappet e deteriorates. This poor response causes valve lift loss in the intake and exhaust valves b.
また、オイルギヤラリｇ内の油圧が低いため
に、油圧タペツトｅの油圧室ｉ内に空気を吸い込
んでしまうこともあり、この油圧室ｉ内に混入す
る空気もバルブリフトロスを生じさせる原因とな
つていた。 In addition, because the oil pressure in the oil gear g is low, air may be sucked into the hydraulic chamber i of the hydraulic tappet e, and the air that gets mixed into the hydraulic chamber i also causes valve lift loss. Ta.
本考案は、上記事情を考慮して創案されたもの
であり、その目的は、オイルギヤラリ内の油圧を
高めて油圧タペツトの応答性を向上させることが
できる油圧タペツトへの供給油圧補償装置を提供
することにある。
The present invention was devised in consideration of the above circumstances, and its purpose is to provide a hydraulic tappet supply oil pressure compensating device that can increase the hydraulic pressure in the oil gear rally and improve the responsiveness of the hydraulic tappet. There is a particular thing.
本考案は、上記目的を達成するために、ロツカ
アームを油圧で支承する油圧タペツトに支承油を
供給するオイルギヤラリに接続されたシリンダ室
と、そのシリンダ室内に移動自在に設けられ、上
記オイルギヤラリ内の油を押圧するためのピスト
ンと、そのピストンを駆動させる電磁ソレノイド
とを備えたものであり、電磁ソレノイドによりピ
ストンを駆動してオイルギヤラリ内の油を押圧し
油圧タペツト内に供給する支承油の油圧を補償す
る。
In order to achieve the above object, the present invention includes a cylinder chamber connected to an oil gear rally that supplies bearing oil to a hydraulic tappet that hydraulically supports the rocker arm, and a cylinder chamber that is movably provided in the cylinder chamber, and a It is equipped with a piston to press the piston and an electromagnetic solenoid to drive the piston.The electromagnetic solenoid drives the piston to press the oil in the oil gear rally and compensate the hydraulic pressure of the bearing oil supplied to the hydraulic tappet. do.
以下に、本考案の好適一実施例を添付図面に基
づき詳述する。
A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
第１図は本考案に係る油圧タペツトへの供給油
圧補償装置の概略構成を示している。この図にお
いて１は、可変気筒内燃機関の休止される気筒の
動弁機構２部に設けられた吸・排気弁作動停止装
置であり、本考案の供給油圧補償装置はその吸・
排気弁作動停止装置１に組み込まれる油圧タペツ
ト３への供給油圧を補償するように構成されてい
る。 FIG. 1 shows a schematic structure of a compensating device for supplying hydraulic pressure to a hydraulic tappet according to the present invention. In this figure, 1 is an intake/exhaust valve actuation stop device provided in the valve train 2 of the cylinder to be stopped in a variable cylinder internal combustion engine.
It is configured to compensate the hydraulic pressure supplied to the hydraulic tappet 3 incorporated in the exhaust valve actuation stop device 1.
図示されるように、吸・排気弁作動停止装置１
は動弁機構２のロツカアーム４の支点部となるロ
ツカシヤフト５を支承するもので、吸・排気弁６
を開閉駆動させるときには、プツシユロツド７か
らの突き上げ力を油圧タペツト３内に封入した油
圧力で受けてロツカシヤフト５を規定位置に支承
し、これによりロツカアーム４をロツカシヤフト
５回りに往復揺動させて吸・排気弁６を開閉させ
るようになつている。 As shown in the figure, an intake/exhaust valve operation stop device 1
1 supports the rocker shaft 5, which is the fulcrum of the rocker arm 4 of the valve mechanism 2, and the intake/exhaust valve 6.
When opening and closing, the push-up force from the push rod 7 is received by the hydraulic pressure sealed in the hydraulic tappet 3 to support the rocker shaft 5 at a specified position, thereby causing the rocker arm 4 to swing back and forth around the rocker shaft 5 to perform suction and suction. The exhaust valve 6 is opened and closed.
他方、吸・排気弁６の開閉作動を停止させると
きには、油圧タペツト３内の油圧を解放させるこ
とによつて、プツシユロツド７の突き上げ力でロ
ツカシヤフト５を上下に昇降移動させてその突き
上げ力を吸収し、吸・排気弁６の開閉作動を停止
させるようになつている。 On the other hand, when stopping the opening/closing operation of the intake/exhaust valve 6, by releasing the hydraulic pressure in the hydraulic tappet 3, the thrusting force of the push rod 7 moves the rocker shaft 5 up and down to absorb the thrusting force. , the opening/closing operation of the intake/exhaust valve 6 is stopped.
即ち、吸・排気弁作動停止装置１は、ロツカシ
ヤフト５をシリンダヘツド等の固定系８から油圧
力で支承する油圧タペツト３と、この油圧タペツ
ト３内に支承油を給排させてロツカシヤフト５の
昇降移動を自在となさせる油給排手段９とから主
に構成されている。 That is, the intake/exhaust valve operation stop device 1 includes a hydraulic tappet 3 that supports the rocker shaft 5 with hydraulic pressure from a fixed system 8 such as a cylinder head, and a hydraulic tappet 3 that supplies and discharges support oil into the hydraulic tappet 3 to raise and lower the rocker shaft 5. It mainly consists of an oil supply/discharge means 9 that is movable.
油圧タペツト３は、下端部に上記ロツカシヤフ
ト５を軸支するサポート１０が取り付けられた有
底筒体状のプランジヤ１１と、このプランジヤ１
１の上端部側に嵌合挿入されて上縁部が固定系８
に当接される有底筒体状のインナスリーブ１２と
からなり、プランジヤ１１の上端部は固定系８に
対して離間されている。油圧タペツト３にはそれ
らプランジヤ１１とインナスリーブ１２とによつ
て油圧室１３が区画形成されており、インナスリ
ーブ１２の底部にはインナスリーブ１２内から油
圧室１３内へと支承油を供給してその支承油を油
圧室１３内に封入させる逆止弁１４が設けられて
いる。従つて、油圧タペツト３は逆止弁１４が強
制的に開放されて油圧室１３内の油圧が解放され
ると、インナスリーブ１２に対してプランジヤ１
１が上下に摺動して昇降移動するようになつてい
る。またプランジヤ１１の外周側には、その昇降
移動を摺動自在に案内するアウタスリーブ１５が
設けられており、このアウタスリーブ１５は固定
系８に形成された凹陥部１６に圧入固定されてい
る。 The hydraulic tappet 3 includes a bottomed cylindrical plunger 11 and a bottomed cylindrical plunger 11 to which a support 10 for pivotally supporting the rock shaft 5 is attached to the lower end.
1 is fitted and inserted into the upper end side of the fixing system 8.
The upper end of the plunger 11 is spaced apart from the fixing system 8. A hydraulic chamber 13 is defined in the hydraulic tappet 3 by the plunger 11 and the inner sleeve 12. At the bottom of the inner sleeve 12, bearing oil is supplied from inside the inner sleeve 12 into the hydraulic chamber 13. A check valve 14 is provided to seal the bearing oil into the hydraulic chamber 13. Therefore, when the check valve 14 is forcibly opened and the hydraulic pressure in the hydraulic chamber 13 is released, the hydraulic tappet 3 moves the plunger 1 against the inner sleeve 12.
1 slides up and down to move up and down. Further, an outer sleeve 15 is provided on the outer circumferential side of the plunger 11 to slidably guide the vertical movement of the plunger 11, and the outer sleeve 15 is press-fitted into a recess 16 formed in the fixing system 8.
油給排手段９は上記逆止弁１４を適宜強制的に
開放させる針弁１７と、その逆止弁１４を通じて
油圧室１３内に支承油を給排させるためのオイル
ギヤラリ１８とから構成されている。 The oil supply and discharge means 9 is composed of a needle valve 17 for forcibly opening the check valve 14 as appropriate, and an oil gear lary 18 for supplying and discharging support oil into the hydraulic chamber 13 through the check valve 14. .
オイルギヤラリ１８は上記固定系８に設けられ
た給油通路１９と上記凹陥部１６の上部に区画形
成された給油室２０とからなり、上記インナスリ
ーブ１２にはその内部に油を導入するための通油
口２１が設けられている。 The oil gear gallery 18 consists of an oil supply passage 19 provided in the fixed system 8 and an oil supply chamber 20 defined above the recessed part 16, and the inner sleeve 12 is provided with an oil passage for introducing oil into the inner sleeve 12. A port 21 is provided.
また、固定系８たるシリンダヘツドにはその上
面部２２から上記凹陥部１６内のインナスリーブ
１２内側に臨んで貫通された通孔２３が形成され
ており、その通孔２３とインナスリーブ１２とを
挿通して上記針弁１７が設けられている。シリン
ダヘツドの上面部２２には針弁１７を上下に延退
出させるためのソレノイド２４が設けられてお
り、ソレノイド２４は気筒を休止させるときに励
磁されて針弁１７を下方に延出し、逆止弁１４を
強制的に開放させるようになつている。２５はプ
ランジヤ１１の下降時の応答速度を高めるべく設
けられたリターンスプリングであり、２６は油圧
室１３内に設けられてインナスリーブ１２を常時
固定系８に当接させると共に油圧室１３内の容積
を拡大すべくプランジヤ１１とインナスリーブ１
２とを付勢するスプリングである。 In addition, a through hole 23 is formed in the cylinder head, which is the fixing system 8, and extends through the upper surface 22 of the cylinder head toward the inside of the inner sleeve 12 in the recessed portion 16. The needle valve 17 is provided therethrough. A solenoid 24 for vertically extending and retracting the needle valve 17 is provided on the upper surface 22 of the cylinder head. The valve 14 is forced to open. 25 is a return spring provided to increase the response speed when the plunger 11 descends; 26 is provided within the hydraulic chamber 13 to keep the inner sleeve 12 in constant contact with the fixed system 8 and to reduce the volume within the hydraulic chamber 13; Plunger 11 and inner sleeve 1 to enlarge
This is a spring that biases both.
ところで上記オイルギヤラリ１８には、油圧タ
ペツト３内に供給する支承油の注入速度を速める
べくオイルギヤラリ１８内の油を押圧して油圧タ
ペツト３への供給油圧を高める供給油圧補償装置
２７が設けられる。 Incidentally, the oil gear gallery 18 is provided with a supply oil pressure compensation device 27 that presses the oil in the oil gear gallery 18 to increase the oil pressure supplied to the hydraulic tappet 3 in order to increase the injection speed of the bearing oil supplied into the hydraulic tappet 3.
供給油圧補償装置２７はオイルギヤラリ１８
と、これに接続されて設けられた加圧手段２８と
でなり、その加圧手段２８はオイルギヤラリ１８
を形成する給油通路１９に連通して固定系８たる
シリンダヘツドに設けられたシリンダ室２９と、
そのシリンダ室２９内に往復移動自在に設けられ
てオイルギヤラリ１８内の油を押圧するピストン
３０と、このピストン３０を駆動させる駆動手段
３１である電磁ソレノイド３９とで構成されてい
る。 The supply hydraulic pressure compensation device 27 is connected to the oil gear rally 18.
and a pressurizing means 28 connected thereto, and the pressurizing means 28 is connected to the oil gear rally 18.
a cylinder chamber 29 provided in a cylinder head serving as a fixed system 8 and communicating with an oil supply passage 19 forming a cylinder;
It is comprised of a piston 30 that is provided in the cylinder chamber 29 so as to be reciprocally movable and presses oil in the oil gear rally 18, and an electromagnetic solenoid 39 that is a driving means 31 that drives the piston 30.
本実施例では、シリンダ室２９内はピストン３
０によつて加圧室３２側と作動室３３側とに区画
され、加圧室３２側に上記給油通路１９が連通さ
れている。その場合そのシリンダ室２９にダイヤ
フラム４０を設けて加圧室３２側の油のリークを
防ぐようにし、ピストン３０によつてそのダイヤ
フラム４０を押圧させるようにすることが望まし
い。そのピストン３０は、吸・排気弁６を作動停
止状態から開閉作動状態に移行させるときに電磁
ソレノイド３９が励磁されて下方に押し出され、
これにより加圧室３２側の油が加圧されるように
なつている。 In this embodiment, the inside of the cylinder chamber 29 is the piston 3.
0 into a pressurizing chamber 32 side and an operating chamber 33 side, and the oil supply passage 19 is communicated with the pressurizing chamber 32 side. In that case, it is desirable that a diaphragm 40 be provided in the cylinder chamber 29 to prevent oil leakage from the pressurizing chamber 32 side, and that the diaphragm 40 be pressed by the piston 30. The piston 30 is pushed downward when the electromagnetic solenoid 39 is energized when the intake/exhaust valve 6 is moved from a non-operating state to an open/close operating state.
As a result, the oil on the pressurizing chamber 32 side is pressurized.
次に、本考案の作用について説明する。 Next, the operation of the present invention will be explained.
第１図は、吸・排気弁作動停止装置１の針弁１
７を退出させて、吸・排気弁６を作動停止状態か
ら開閉作動状態へと移行させたときの状態を示し
ている。このように、吸・排気弁６を作動停止状
態から開閉作動状態へと移行させるときには、
吸・排気弁作動停止装置１の油圧タペツト３内
（油圧室１３内）に早急に支承油を注入させるべ
く供給油圧補償装置２７を作動させてオイルギヤ
ラリ１８内の油圧を高める。 FIG. 1 shows the needle valve 1 of the intake/exhaust valve operation stop device 1.
7 is withdrawn, and the intake/exhaust valve 6 is shifted from a non-operating state to an open/close operating state. In this way, when transitioning the intake/exhaust valve 6 from the inactive state to the open/close operating state,
In order to promptly inject support oil into the hydraulic tappet 3 (inside the hydraulic chamber 13) of the intake/exhaust valve actuation stop device 1, the supply hydraulic pressure compensation device 27 is activated to increase the hydraulic pressure in the oil gear gallery 18.
供給油圧補償装置２７の電磁ソレノイド３９
は、吸・排気弁作動停止装置１の針弁１７が退出
されるのと略同時に、またはこれに先行して通電
される。するとシリンダ室２９内のピストン３０
が下方に移動されて加圧室３２内の油を押圧し、
オイルギヤラリ１８内の油圧が上昇する。この場
合、ピストン３０を電磁ソレノイド３９により移
動させるため、流体圧でピストン３０を移動させ
る場合に比してオイルギヤラリ１８内の油圧を応
答性よく高めることができる。これにより、油圧
タペツト３の油圧室１３内の油圧とオイルギヤラ
リ１８内の油圧との圧力差が大きくなり、油圧室
１３内への支承油の注入速度が速まりロツカシヤ
フト５のリフト速度の応答性が向上されて、吸・
排気弁６のバルブリフトロスが可及的に減少され
る。またオイルギヤラリ１８内の油圧が高められ
るので、オイルギヤラリ１８内に混入した気泡は
潰れ、かつ油圧タペツト３のプランジヤ１１とイ
ンナスリーブ１２との間からその油圧室１３内に
空気を吸い込むことがなくなり、それら気泡の混
入によるバルブリフトロスも可及的に防止できる
ようになる。 Electromagnetic solenoid 39 of supply oil pressure compensator 27
is energized substantially simultaneously with, or prior to, the needle valve 17 of the intake/exhaust valve actuation stop device 1 being withdrawn. Then, the piston 30 in the cylinder chamber 29
is moved downward to press the oil in the pressurizing chamber 32,
The oil pressure inside the oil gear gallery 18 increases. In this case, since the piston 30 is moved by the electromagnetic solenoid 39, the oil pressure in the oil gear gallery 18 can be increased with better responsiveness than when the piston 30 is moved by fluid pressure. As a result, the pressure difference between the hydraulic pressure in the hydraulic chamber 13 of the hydraulic tappet 3 and the hydraulic pressure in the oil gear rally 18 increases, the injection speed of support oil into the hydraulic chamber 13 increases, and the responsiveness of the lift speed of the rocker shaft 5 increases. Improved, sucking
Valve lift loss of the exhaust valve 6 is reduced as much as possible. Furthermore, since the oil pressure in the oil gear rally 18 is increased, air bubbles mixed in the oil gear rally 18 are crushed, and air is no longer sucked into the hydraulic chamber 13 from between the plunger 11 and the inner sleeve 12 of the hydraulic tapepet 3, and Valve lift loss due to air bubbles can also be prevented as much as possible.
また、オイルギヤラリ１８内の油圧を内燃機関
の機関回転数に関わらず、略一定値にまで加圧で
きるので、特に機関回転数の低いときに吸・排気
弁６を作動停止状態から開閉作動状態に移行させ
る場合に有効なものとなる。 In addition, since the oil pressure in the oil gear rally 18 can be pressurized to a substantially constant value regardless of the engine speed of the internal combustion engine, the intake/exhaust valves 6 can be changed from a non-operating state to an opening/closing state, especially when the engine speed is low. This will be effective when migrating.
尚、第１図中において４１は、加圧手段２８に
よつてオイルギヤラリ１８内の油圧を高めたとき
に、特にオイルギヤラリ１８の給油室２０内の油
圧を保持させるべく、給油通路１９内に設けた逆
止弁である。 In FIG. 1, 41 is provided in the oil supply passage 19 in order to maintain the oil pressure in the oil supply chamber 20 of the oil gear rally 18 when the oil pressure in the oil gear rally 18 is increased by the pressurizing means 28. It is a check valve.
〔考案の効果〕
以上要するに本考案によれば次の如き優れた効
果を発揮する。[Effects of the invention] In summary, the present invention provides the following excellent effects.
(1) ロツカアームを油圧で支承する油圧タペツト
に支承油を供給するためのオイルギヤラリに接
続されたシリンダ室と、そのシリンダ室内に移
動自在に設けられ、上記オイルギヤラリ内の油
を押圧するためのピストンと、そのピストンを
駆動させる電磁ソレノイドとを備えたので、応
答性よくギヤラリ内の油圧を高めることがで
き、これにより内燃機関の機関回転数に関わら
ず、油圧タペツトへの供給油圧を略一定に保つ
ことができる。(1) A cylinder chamber connected to an oil gear for supplying support oil to the hydraulic tappet that hydraulically supports the rocker arm, and a piston movably provided within the cylinder chamber for pressing the oil in the oil gear. , and an electromagnetic solenoid that drives the piston, it is possible to increase the oil pressure in the gear gallery with good response, thereby keeping the oil pressure supplied to the hydraulic tappet approximately constant regardless of the engine speed of the internal combustion engine. be able to.
(2) オイルギヤラリ内の油圧が高められるので、
油圧タペツト内に供給する支承油の注入速度を
速めることができ、もつて吸・排気弁のバルブ
リフトロスの低減と応答速度の向上とを可及的
に計ることができる。(2) Since the oil pressure inside the oil gear is increased,
The injection speed of the bearing oil supplied into the hydraulic tappet can be increased, thereby reducing the valve lift loss of the intake and exhaust valves and improving the response speed as much as possible.
第１図は本考案に係る油圧タペツトへの供給油
圧補償装置の好適一実施例を示す図、第２図は従
来の供給油圧補償装置を備えていない吸・排気弁
作動停止装置の側断面図である。
図中、３は油圧タペツト、４はロツカアーム、
１８はオイルギヤラリ、２７は油圧タペツトへの
供給油圧補償装置、２９はシリンダ室、３０はピ
ストン、３９は電磁ソレノイドである。
Fig. 1 is a diagram showing a preferred embodiment of the supply oil pressure compensation device for the hydraulic tappet according to the present invention, and Fig. 2 is a side sectional view of a conventional intake/exhaust valve actuation stop device not equipped with a supply oil pressure compensation device. It is. In the figure, 3 is a hydraulic tappet, 4 is a rocker arm,
18 is an oil gear gallery, 27 is a hydraulic pressure compensator for supplying a hydraulic tappet, 29 is a cylinder chamber, 30 is a piston, and 39 is an electromagnetic solenoid.
Claims (1)
支承油を供給するオイルギヤラリに接続されたシ
リンダ室と、該シリンダ室内に移動自在に設けら
れ、上記オイルギヤラリ内の油を押圧するための
ピストンと、該ピストンを駆動させる電磁ソレノ
イドとを備えたことを特徴とする油圧タペツトへ
の供給油圧補償装置。 A cylinder chamber connected to an oil gear gallery that supplies support oil to a hydraulic tappet that hydraulically supports the rocker arm, a piston that is movably provided in the cylinder chamber and that presses the oil in the oil gear gallery, and a piston that drives the piston. A hydraulic pressure compensation device for supplying hydraulic pressure to a hydraulic tappet, characterized in that it is equipped with an electromagnetic solenoid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027339U JPH0420964Y2 (en) | 1985-02-28 | 1985-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985027339U JPH0420964Y2 (en) | 1985-02-28 | 1985-02-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61144206U JPS61144206U (en) | 1986-09-05 |
| JPH0420964Y2 true JPH0420964Y2 (en) | 1992-05-13 |
Family
ID=30524200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985027339U Expired JPH0420964Y2 (en) | 1985-02-28 | 1985-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0420964Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5463837B2 (en) * | 2009-10-06 | 2014-04-09 | いすゞ自動車株式会社 | Internal combustion engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934004B2 (en) * | 1976-06-15 | 1984-08-20 | 松下電器産業株式会社 | Unwanted signal removal device |
| JPS5952008B2 (en) * | 1980-02-26 | 1984-12-17 | 株式会社 アマダ | Turret punch press |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934004U (en) * | 1982-08-27 | 1984-03-02 | 日産自動車株式会社 | Internal combustion engine intake and exhaust valve drive device |
| JPS5952008U (en) * | 1982-09-29 | 1984-04-05 | アイシン精機株式会社 | Hydraulic control unit for variable cylinder with movable rocker arm |
-
1985
- 1985-02-28 JP JP1985027339U patent/JPH0420964Y2/ja not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5934004B2 (en) * | 1976-06-15 | 1984-08-20 | 松下電器産業株式会社 | Unwanted signal removal device |
| JPS5952008B2 (en) * | 1980-02-26 | 1984-12-17 | 株式会社 アマダ | Turret punch press |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61144206U (en) | 1986-09-05 |
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