JP2006118378A - Starter of internal combustion engine - Google Patents

Starter of internal combustion engine Download PDF

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Publication number
JP2006118378A
JP2006118378A JP2004304614A JP2004304614A JP2006118378A JP 2006118378 A JP2006118378 A JP 2006118378A JP 2004304614 A JP2004304614 A JP 2004304614A JP 2004304614 A JP2004304614 A JP 2004304614A JP 2006118378 A JP2006118378 A JP 2006118378A
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path
way clutch
internal combustion
combustion engine
oil
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Haruyuki Katayama
晴之 片山
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Toyota Motor Corp
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Toyota Motor Corp
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N2250/00—Problems related to engine starting or engine's starting apparatus
    • F02N2250/08—Lubrication of starters; Sealing means for starters

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  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a starter of an internal combustion engine inhibiting supply of excessive lubrication oil to a one-way clutch. <P>SOLUTION: The starter of the invention comprises a starter motor 11, a rotation transmission mechanism 10 having the one-way clutch 20 for allowing rotation transmission from the starter motor 11 to a crank shaft 2 of the internal combustion engine 1 and for blocking rotation transmission in an opposite direction and a clutch lubrication mechanism 30 for introducing the lubrication oil supplied from an oil pump 25 of the internal combustion engine 1 to the one-way clutch 20. The clutch lubrication mechanism 30 introduces the lubrication oil to the one-way clutch 20 through a relief passage 31, the relief passage 31 branched from a lubrication oil discharge passage 28, an inflow passage 33, an oil passage 32 and an outflow passage 34. A reduction hole 35 is provided in the relief passage 31 for reducing a supply amount of the lubrication oil introduced to the one-way clutch 20. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、内燃機関の始動装置に関する。   The present invention relates to a starter for an internal combustion engine.

内燃機関の始動装置として、始動モータから内燃機関のクランク軸への回転伝達を許容し反対方向への回転伝達を阻止する一方向クラッチを有する回転伝達機構を備えたものがある。また、一方向クラッチへ潤滑油を供給する潤滑機構として、内燃機関のオイルポンプから供給される潤滑油を一方向クラッチへ導くものが知られている（例えば特許文献１）。その他、本発明に関連する先行技術文献として特許文献２及び特許文献３が存在する。   Some internal combustion engine starters include a rotation transmission mechanism having a one-way clutch that allows rotation transmission from the starter motor to the crankshaft of the internal combustion engine and prevents rotation transmission in the opposite direction. As a lubrication mechanism for supplying lubricating oil to a one-way clutch, there is known a mechanism that guides lubricating oil supplied from an oil pump of an internal combustion engine to a one-way clutch (for example, Patent Document 1). In addition, there are Patent Document 2 and Patent Document 3 as prior art documents related to the present invention.

実開平５−７３３２６号公報Japanese Utility Model Publication No. 5-73326 実開平６−６３９６１号公報Japanese Utility Model Publication No. 6-63961 特開平８−３２６８６６号公報JP-A-8-326866

潤滑油の供給源としてのオイルポンプは、内燃機関の各部へ潤滑油を十分に供給できるように容量が設定されている。ところが、一方向クラッチが必要とする潤滑油の量は内燃機関の各部へ供給する潤滑油の総量に対して相対的に少ないため、一方向クラッチに必要以上の潤滑油が供給されてフリクションロスが増大するおそれがある。   The capacity of an oil pump as a supply source of the lubricant is set so that the lubricant can be sufficiently supplied to each part of the internal combustion engine. However, since the amount of lubricating oil required for the one-way clutch is relatively small with respect to the total amount of lubricating oil supplied to each part of the internal combustion engine, more lubricating oil than necessary is supplied to the one-way clutch, resulting in friction loss. May increase.

そこで、本発明は、一方向クラッチに必要以上の潤滑油が供給されることを防止できる内燃機関の始動装置を提供することを目的とする。   SUMMARY OF THE INVENTION An object of the present invention is to provide a starter for an internal combustion engine that can prevent excessive lubrication oil from being supplied to a one-way clutch.

本発明の始動装置は、始動モータと、前記始動モータから内燃機関のクランク軸への回転伝達を許容し反対方向への回転伝達を阻止する一方向クラッチを有する回転伝達機構と、内燃機関のオイルポンプから供給される潤滑油を前記一方向クラッチへ導くクラッチ潤滑機構と、を備え、前記クラッチ潤滑機構は、前記オイルポンプからの潤滑油の吐出経路から分岐されて、前記潤滑油を前記一方向クラッチへ導く分岐路と、前記分岐路に設けられ、前記一方向クラッチへ導かれる潤滑油の供給量を減量する減量手段と、を具備することにより、上述した課題を解決する（請求項１）。   The starter of the present invention includes a starter motor, a rotation transmission mechanism having a one-way clutch that allows rotation transmission from the starter motor to the crankshaft of the internal combustion engine and blocks rotation transmission in the opposite direction, and oil for the internal combustion engine. A clutch lubrication mechanism for guiding the lubricant supplied from the pump to the one-way clutch, and the clutch lubrication mechanism is branched from a discharge path of the lubricant from the oil pump, and the lubricant is guided in the one-way The above-described problem is solved by comprising a branch path leading to the clutch, and a weight reducing means provided in the branch path for reducing the supply amount of the lubricating oil guided to the one-way clutch (Claim 1). .

この始動装置によれば、一方向クラッチに潤滑油を導く分岐路に減量手段が設けられているので、減量手段が設けられていない形態と比して潤滑油の供給量を減らすことができるため、必要以上の潤滑油が一方向クラッチ供給されることを防止できる。その結果、フリクションロスを低減することができる。   According to this starting device, since the reducing means is provided in the branch path that guides the lubricating oil to the one-way clutch, it is possible to reduce the supply amount of the lubricating oil as compared with the configuration in which the reducing means is not provided. Therefore, it is possible to prevent excessive lubrication oil from being supplied to the one-way clutch. As a result, friction loss can be reduced.

本発明の始動装置において、前記分岐路には、前記吐出経路内の油圧を設定圧力以下に保持するリリーフバルブが設けられ、前記分岐路が、前記リリーフバルブを介してリリーフされた潤滑油を導く通路として構成されていてもよい（請求項２）。この形態では、リリーフバルブを介してリリーフされた潤滑油を一方向クラッチの潤滑に利用できるので、一方向クラッチの潤滑のためにオイルポンプの容量を増やす必要がない。このためオイルポンプの大型化を抑えることができ、燃費の悪化を防止できる。   In the starter of the present invention, the branch passage is provided with a relief valve that maintains a hydraulic pressure in the discharge passage below a set pressure, and the branch passage guides the lubricating oil that has been relieved through the relief valve. It may be configured as a passage (claim 2). In this embodiment, the lubricating oil relieved via the relief valve can be used for lubrication of the one-way clutch, so that it is not necessary to increase the capacity of the oil pump for lubrication of the one-way clutch. For this reason, the enlargement of an oil pump can be suppressed and the deterioration of fuel consumption can be prevented.

本発明の始動装置において、前記回転伝達機構は、前記一方向クラッチが配置され、前記始動モータの回転を前記クランク軸に伝達するための伝達軸を有し、前記分岐路は、前記伝達軸の軸線方向に延びるようにして前記伝達軸に形成された油路と、前記吐出経路との分岐位置から前記伝達軸の前記油路に向かって延びる導入路と、前記油路と前記導入路とを結ぶ流入路と、前記油路と連通し前記一方向クラッチの内周面側に開口する流出路と、を有し、前記減量手段が、前記導入路に設けられていてもよい（請求項３）。この形態によれば、分岐路が伝達軸に形成された油路を有し、この油路を介して潤滑油が一方向クラッチに供給されるので、長い配管を引き回すためのスペースを別途確保する必要がなく、内燃機関内の限られたスペースを有効に活用できる。しかも、一方向クラッチに潤滑油を供給する配管がクランク軸等の回転物の邪魔になることもない。この形態においては、更に、前記オイルポンプは、ハウジングと、前記ハウジングに収容され、前記伝達軸の一端に取り付けられたロータと、を有し、前記流入路が前記ハウジングに形成されていてもよい（請求項４）。この場合、伝達軸がオイルポンプの駆動軸として兼用され、しかも導入路がオイルポンプのハウジングに形成されるので、始動装置を小型化できる。   In the starter of the present invention, the rotation transmission mechanism is provided with the one-way clutch, has a transmission shaft for transmitting rotation of the starter motor to the crankshaft, and the branch path is connected to the transmission shaft. An oil passage formed in the transmission shaft so as to extend in the axial direction, an introduction passage extending from the branch position of the discharge passage toward the oil passage of the transmission shaft, and the oil passage and the introduction passage. An inflow path to be connected and an outflow path that communicates with the oil path and opens to an inner peripheral surface side of the one-way clutch, and the weight reduction means may be provided in the introduction path. ). According to this aspect, the branch passage has an oil passage formed in the transmission shaft, and the lubricating oil is supplied to the one-way clutch through the oil passage, so that a space for routing a long pipe is secured separately. There is no need, and the limited space in the internal combustion engine can be used effectively. Moreover, the piping for supplying the lubricating oil to the one-way clutch does not interfere with the rotating object such as the crankshaft. In this embodiment, the oil pump may further include a housing and a rotor housed in the housing and attached to one end of the transmission shaft, and the inflow path may be formed in the housing. (Claim 4). In this case, since the transmission shaft is also used as the drive shaft of the oil pump and the introduction path is formed in the housing of the oil pump, the starter can be downsized.

以上説明したように、本発明によれば、一方向クラッチへ導かれる潤滑油の供給量を減量する減量手段を備えているため、一方向クラッチに必要以上の潤滑油が供給されることを防止できる。   As described above, according to the present invention, since the reducing means for reducing the supply amount of the lubricating oil guided to the one-way clutch is provided, the one-way clutch is prevented from being supplied with an excessive amount of lubricating oil. it can.

図１は、本発明の始動装置を適用した内燃機関の要部を示している。内燃機関１は複数の気筒（不図示）を備えたレシプロ式のエンジンであり、ピストン（不図示）の往復運動を回転運動に変換するクランク軸２を備えている。   FIG. 1 shows a main part of an internal combustion engine to which a starting device of the present invention is applied. The internal combustion engine 1 is a reciprocating engine having a plurality of cylinders (not shown), and includes a crankshaft 2 that converts a reciprocating motion of a piston (not shown) into a rotational motion.

始動装置１０は、始動モータ１１と、始動モータ１１の回転をクランク軸２に伝達する回転伝達機構１２と、を備えている。回転伝達機構１２は、始動モータ１１に取り付けられたピニオン１３と、クランク軸２に設けられたクランクギア１４と、を備え、ピニオン１３及びクランクギア１４の間には、ピニオン１３に噛み合うアイドルギア１５と、アイドルギア１５の回転をクランクギア２に伝達する中間ギアアッセンブリ１６と、がそれぞれ設けられいる。   The starter 10 includes a starter motor 11 and a rotation transmission mechanism 12 that transmits the rotation of the starter motor 11 to the crankshaft 2. The rotation transmission mechanism 12 includes a pinion 13 attached to the starter motor 11 and a crank gear 14 provided on the crankshaft 2, and an idle gear 15 that meshes with the pinion 13 is interposed between the pinion 13 and the crank gear 14. And an intermediate gear assembly 16 for transmitting the rotation of the idle gear 15 to the crank gear 2.

図２にも示したように、中間ギアアッセンブリ１６は、両端を転がり軸受２１，２２にて回転可能に支持されたギア軸（伝達軸）１７と、始動モータ１１側に設けられたドリブンギア１８と、クランク軸２側に設けられ中間ギア１９と、一方向クラッチ２０と、を含んで構成されている。ドリブンギア１８はアイドルギア１５と、中間ギア１９はくランクギア１４とそれぞれ噛み合い、これらのギア１８，１９は、一方向クラッチ２０を介在させて互いに同軸となるようにしてギア軸１７に設けられている。ドリブンギア１８はギア軸１７の軸線ＣＬ方向に延びる円筒部１８ａを有している。円筒部１８ａとギア軸１７との間には、一方向クラッチ２０が一対の転がり軸受２３，２３に挟まれた状態で設けられている。中間ギア１９はギア軸１７と一体に形成されている。一方向クラッチ２０は、始動モータ１１からクランク軸２への回転伝達を許容し反対方向の回転伝達を阻止するように設定されている。従って、内燃機関１の完爆後においては、クランク軸２の回転が一方向クラッチ２０にて遮断されて始動モータ１１まで伝達されないため、クランクギア１４と中間ギア１９とを常時噛み合わせておくことができる。なお、一方向クラッチ２０の構造は周知のものと同様でよいので、ここでは詳しい説明を省略する。   As shown in FIG. 2, the intermediate gear assembly 16 includes a gear shaft (transmission shaft) 17 that is rotatably supported by rolling bearings 21 and 22 at both ends, and a driven gear 18 provided on the starter motor 11 side. And an intermediate gear 19 provided on the crankshaft 2 side and a one-way clutch 20. The driven gear 18 meshes with the idle gear 15 and the intermediate gear 19 and the gear rank gear 14, respectively. These gears 18 and 19 are provided on the gear shaft 17 so as to be coaxial with each other with a one-way clutch 20 interposed therebetween. Yes. The driven gear 18 has a cylindrical portion 18 a extending in the direction of the axis CL of the gear shaft 17. A one-way clutch 20 is provided between the cylindrical portion 18 a and the gear shaft 17 in a state of being sandwiched between a pair of rolling bearings 23 and 23. The intermediate gear 19 is formed integrally with the gear shaft 17. The one-way clutch 20 is set to allow rotation transmission from the starter motor 11 to the crankshaft 2 and prevent rotation transmission in the opposite direction. Therefore, after the complete explosion of the internal combustion engine 1, the rotation of the crankshaft 2 is interrupted by the one-way clutch 20 and is not transmitted to the starter motor 11, so that the crank gear 14 and the intermediate gear 19 are always meshed. Can do. Since the structure of the one-way clutch 20 may be the same as that of a known one, a detailed description is omitted here.

始動装置１０は、上記に加えて、内燃機関２のオイルポンプ２５から供給される潤滑油を一方向クラッチ２０へ導くクラッチ潤滑機構３０を備えている。図２にも示したように、オイルポンプ２５は、ハウジング２６と、ハウジング２６に回転可能に収容されたロータ２７とを備えたトロコイド式のポンプであり、オイルポンプ２５の駆動軸としてギア軸１７が用いられている。ハウジング２６はギア軸１７に形成されたジャーナル部１７ａに嵌め込まれるようにして配置され、ロータ２７はジャーナル部１７ａに隣接するギア軸１７の端側１７ｂに取り付けられてギア軸１７にて回転駆動される。   In addition to the above, the starting device 10 includes a clutch lubrication mechanism 30 that guides the lubricating oil supplied from the oil pump 25 of the internal combustion engine 2 to the one-way clutch 20. As shown in FIG. 2, the oil pump 25 is a trochoid pump including a housing 26 and a rotor 27 rotatably accommodated in the housing 26, and the gear shaft 17 serves as a drive shaft of the oil pump 25. Is used. The housing 26 is disposed so as to be fitted into a journal portion 17 a formed on the gear shaft 17, and the rotor 27 is attached to an end side 17 b of the gear shaft 17 adjacent to the journal portion 17 a and is driven to rotate by the gear shaft 17. The

ハウジング２６には、吐出経路としての吐出路２８と、吐出路２８から分岐されたリリーフ路（導入路）３１と、がそれぞれ形成されている。吐出路２８はシリンダブロック（不図示）のメインギャラリーと連通し、これにより内燃機関１の潤滑対象各部へ潤滑油が導かれる。リリーフ路３１には、吐出路２８内の油圧を設定圧力以下に保持するリリーフバルブ２９が設けられており、吐出路２８内の油圧が設定圧力を超えるとリリーフバルブ２９が開弁されて潤滑油がリリーフ路３１に導かれる。リリーフ路３１は吐出路２８との分岐位置Ｓからギア軸１７のジャーナル部１７ａまで延び、かつジャーナル部１７ａ側に開口するように形成されている。   A discharge path 28 serving as a discharge path and a relief path (introduction path) 31 branched from the discharge path 28 are formed in the housing 26, respectively. The discharge passage 28 communicates with a main gallery of a cylinder block (not shown), whereby the lubricating oil is guided to each part to be lubricated of the internal combustion engine 1. The relief path 31 is provided with a relief valve 29 that keeps the hydraulic pressure in the discharge path 28 below a set pressure. When the hydraulic pressure in the discharge path 28 exceeds the set pressure, the relief valve 29 is opened and the lubricating oil Is led to the relief path 31. The relief path 31 extends from the branch position S to the discharge path 28 to the journal portion 17a of the gear shaft 17 and is formed to open toward the journal portion 17a.

ギア軸１７には、その軸線ＣＬ方向に延びる油路３２と、ジャーナル部１７ａにおいてリリーフ路３１と油路３２とを結び、ギア軸１７の半径方向に延びる流入路３３と、油路３２と連通し一方向クラッチ２０の内周面側に開口する流出路３４と、がそれぞれ形成されている。以上により、オイルポンプ２５からの潤滑油は、図２の矢印で示したように、リリーフ路３１→流入路３３→油路３２→流出路３４の経路で一方向クラッチ２０に導かれ、これらの通路３１，３２，３３，３４により本発明の分岐路が構成される。   The gear shaft 17 is connected to the oil passage 32 extending in the axis CL direction, the relief passage 31 and the oil passage 32 are connected to each other in the journal portion 17a, and communicates with the oil passage 32 and the inflow passage 33 extending in the radial direction of the gear shaft 17. In addition, an outflow passage 34 that opens to the inner peripheral surface side of the one-way clutch 20 is formed. As described above, the lubricating oil from the oil pump 25 is guided to the one-way clutch 20 through the relief path 31 → the inflow path 33 → the oil path 32 → the outflow path 34 as shown by the arrows in FIG. The branch paths of the present invention are constituted by the passages 31, 32, 33, and 34.

リリーフ路３１には、一方向クラッチ２０への潤滑油の供給量を減量するための減量孔（減量手段）３５が形成されている。減量孔３５の大きさを適宜に調整することにより、潤滑油の供給量を調整でき、必要以上の潤滑油の供給が防止される。なお、減量孔３５から流出した潤滑油は図示しないオイルパンに戻される。   The relief path 31 is formed with a weight reduction hole (a weight reduction means) 35 for reducing the amount of lubricating oil supplied to the one-way clutch 20. By appropriately adjusting the size of the weight reducing hole 35, the supply amount of the lubricating oil can be adjusted, and the supply of the lubricating oil more than necessary is prevented. The lubricating oil that has flowed out of the weight reducing hole 35 is returned to an oil pan (not shown).

本発明は以上の実施形態に限定されず、種々の形態にて実施してよい。本発明の実施の際にオイルポンプを回転伝達機構の伝達軸で駆動することは必須ではなく、オイルポンプを他の伝達手段を介して駆動してもよい。また、減量手段は減量孔３５に限らず、設定圧力を超えた場合に開弁し、リリーフ路３１内の油圧を調整するチェックバルブ等の逃がし弁手段をリリーフ路３１に設けてもよい。これによれば、減量孔３５の場合よりも正確に潤滑油の供給量を調整できる。本発明の分岐路の分岐位置は、オイルポンプのハウジング内部に限定されず、ハウジング外に設けられていてもよい。分岐路が、オイルポンプからリリーフされた潤滑油が導かれる通路として構成されることに限定されず、吐出経路のうちリリーフ路以外から分岐された通路であってもよい。   This invention is not limited to the above embodiment, You may implement with a various form. In the practice of the present invention, it is not essential to drive the oil pump with the transmission shaft of the rotation transmission mechanism, and the oil pump may be driven via other transmission means. The reducing means is not limited to the reducing hole 35, and a relief valve means such as a check valve for adjusting the hydraulic pressure in the relief path 31 may be provided in the relief path 31 when the set pressure is exceeded. According to this, the supply amount of the lubricating oil can be adjusted more accurately than in the case of the weight reducing hole 35. The branch position of the branch path of the present invention is not limited to the inside of the housing of the oil pump, and may be provided outside the housing. The branch path is not limited to being configured as a path through which the lubricating oil relieved from the oil pump is guided, and may be a path branched from other than the relief path in the discharge path.

また、回転伝達機構の構成は上記形態に限定されず、一方向クラッチを備えた他の構成でもよい。例えば、図３に示したように、ドリブンギア１８０をギア軸１７０と一体化するとともに、一方向クラッチ２００を介して中間ギア１９０を取り付けて中間ギアアッセンブリ１６０を構成し、中間ギア１９０を、メインギア１９１と、メインギア１９１のバックラッシュを埋めるように可動するサブギア１９２と、を有するシザーズギアの形式としてもよい。図３の場合、一方向クラッチ２００への潤滑油の供給は、上述したものと同様の構成でよい。即ち、ギア軸１７０に、油路３２０、流入路３３０、及び流出路３４０をそれぞれ形成し、オイルポンプ２５から供給される潤滑油を流入路３３０に導けばよい。中間ギア１９０に関しては、サブギア１９２と軸部１９３と摺動部分Ｔを潤滑するため、摺動部分Ｔ及び一方向クラッチ２００の外周面のそれぞれに開口する供給路３５０を軸部１９３に適宜数形成してもよい。これにより、一方向クラッチ２００に導かれた潤滑油が供給路３５０を介して摺動部分Ｔへ導かれ、例えば摺動部分Ｔの磨耗を低減できる。   Moreover, the structure of a rotation transmission mechanism is not limited to the said form, The other structure provided with the one-way clutch may be sufficient. For example, as shown in FIG. 3, the driven gear 180 is integrated with the gear shaft 170 and the intermediate gear 190 is attached via the one-way clutch 200 to form the intermediate gear assembly 160. A scissors gear type having a gear 191 and a sub gear 192 movable so as to fill backlash of the main gear 191 may be adopted. In the case of FIG. 3, the supply of the lubricating oil to the one-way clutch 200 may be the same as that described above. That is, the oil passage 320, the inflow passage 330, and the outflow passage 340 may be formed in the gear shaft 170, and the lubricating oil supplied from the oil pump 25 may be guided to the inflow passage 330. With respect to the intermediate gear 190, in order to lubricate the sub gear 192, the shaft portion 193, and the sliding portion T, an appropriate number of supply passages 350 that open to the sliding portion T and the outer peripheral surface of the one-way clutch 200 are formed in the shaft portion 193. May be. Thereby, the lubricating oil guided to the one-way clutch 200 is guided to the sliding portion T via the supply path 350, and for example, wear of the sliding portion T can be reduced.

また、図４に示したように、摺動部分Ｔへ潤滑油を効率的に導くため、一方向クラッチ２００と転がり軸受１００，１０１との間に、適宜数の孔１９６が形成された壁１９５Ｌ，１９５Ｒをそれぞれ設けてもよい。これにより、ころがり軸受１００，１０１からの潤滑油の漏れが壁１９５Ｌ，１９５Ｒにて制限できるので、一方向クラッチ２００に導かれた潤滑油を図３の場合よりも効率よく摺動部分Ｔへ導くことができる。なお、図３及び図４において、共通の構成には共通の符号を付した。また、符号１０２及び１０３はそれぞれギア軸１７０を回転可能に支持する転がり軸受である。   Further, as shown in FIG. 4, in order to efficiently guide the lubricating oil to the sliding portion T, a wall 195L in which an appropriate number of holes 196 are formed between the one-way clutch 200 and the rolling bearings 100 and 101. , 195R may be provided. Thereby, since leakage of the lubricating oil from the rolling bearings 100 and 101 can be limited by the walls 195L and 195R, the lubricating oil guided to the one-way clutch 200 is guided to the sliding portion T more efficiently than in the case of FIG. be able to. In FIGS. 3 and 4, common reference numerals are assigned to common configurations. Reference numerals 102 and 103 denote rolling bearings that rotatably support the gear shaft 170, respectively.

本発明の始動装置を適用した内燃機関の要部を示した図。The figure which showed the principal part of the internal combustion engine to which the starting device of this invention was applied. 本発明のクラッチ潤滑機構の詳細を示した図。The figure which showed the detail of the clutch lubrication mechanism of this invention. 中間ギアアッセンブリの他の例を示した図。The figure which showed the other example of the intermediate | middle gear assembly. 図３の中間ギアアッセンブリの変形例を示した図。The figure which showed the modification of the intermediate | middle gear assembly of FIG.

符号の説明Explanation of symbols

１ 内燃機関
２ クランク軸
３ 始動装置
１０ 回転伝達機構
１１ 始動モータ
１７，１７０ ギア軸（伝達軸）
２０，２００ 一方向クラッチ
２５ オイルポンプ
２６ ハウジング
２７ ロータ
２８ 吐出路（吐出経路）
２９ リリーフバルブ
３０ クラッチ潤滑機構
３１ リリーフ路
３２，３２０ 油路
３３，３３０ 流入路
３４，３４０ 流出路
３５ 減量孔（減量手段）
DESCRIPTION OF SYMBOLS 1 Internal combustion engine 2 Crankshaft 3 Starter 10 Rotation transmission mechanism 11 Starter motor 17,170 Gear shaft (transmission shaft)
20,200 One-way clutch 25 Oil pump 26 Housing 27 Rotor 28 Discharge path (discharge path)
29 Relief valve 30 Clutch lubrication mechanism 31 Relief path 32,320 Oil path 33,330 Inflow path 34,340 Outflow path 35 Reduction hole (reduction means)

Claims (4)

始動モータと、前記始動モータから内燃機関のクランク軸への回転伝達を許容し反対方向への回転伝達を阻止する一方向クラッチを有する回転伝達機構と、内燃機関のオイルポンプから供給される潤滑油を前記一方向クラッチへ導くクラッチ潤滑機構と、を備え、
前記クラッチ潤滑機構は、前記オイルポンプからの潤滑油の吐出経路から分岐されて、前記潤滑油を前記一方向クラッチへ導く分岐路と、前記分岐路に設けられ、前記一方向クラッチへ導かれる潤滑油の供給量を減量する減量手段と、を具備することを特徴とする内燃機関の始動装置。 A starter motor, a rotation transmission mechanism having a one-way clutch that allows rotation transmission from the starter motor to the crankshaft of the internal combustion engine and blocks rotation transmission in the opposite direction, and lubricating oil supplied from an oil pump of the internal combustion engine A clutch lubrication mechanism that guides the one-way clutch to the one-way clutch,
The clutch lubrication mechanism is branched from a lubricant discharge path from the oil pump, and a branch path that guides the lubricant to the one-way clutch, and a lubrication that is provided in the branch path and is guided to the one-way clutch. An internal combustion engine starting device comprising: a weight reducing means for reducing the amount of oil supplied. 前記分岐路には、前記吐出経路内の油圧を設定圧力以下に保持するリリーフバルブが設けられ、前記分岐路が、前記リリーフバルブを介してリリーフされた潤滑油を導く通路として構成されていることを特徴とする請求項１に記載の内燃機関の始動装置。   The branch path is provided with a relief valve that holds the hydraulic pressure in the discharge path below a set pressure, and the branch path is configured as a path that guides the lubricating oil that has been relieved through the relief valve. The starter for an internal combustion engine according to claim 1. 前記回転伝達機構は、前記一方向クラッチが配置され、前記始動モータの回転を前記クランク軸に伝達するための伝達軸を有し、
前記分岐路は、前記伝達軸の軸線方向に延びるようにして前記伝達軸に形成された油路と、前記吐出経路との分岐位置から前記伝達軸の前記油路に向かって延びる導入路と、前記油路と前記導入路とを結ぶ流入路と、前記油路と連通し前記一方向クラッチの内周面側に開口する流出路と、を有し、
前記減量手段が、前記導入路に設けられていることを特徴とする請求項１又は２に記載の内燃機関の始動装置。 The rotation transmission mechanism includes a transmission shaft for transmitting the rotation of the starter motor to the crankshaft, in which the one-way clutch is disposed.
The branch path extends in the axial direction of the transmission shaft, an oil path formed in the transmission shaft, and an introduction path extending from the branch position of the discharge path toward the oil path of the transmission shaft, An inflow path connecting the oil path and the introduction path, and an outflow path communicating with the oil path and opening on the inner peripheral surface side of the one-way clutch,
The starter for an internal combustion engine according to claim 1 or 2, wherein the weight reduction means is provided in the introduction path. 前記オイルポンプは、ハウジングと、前記ハウジングに収容され、前記伝達軸の一端に取り付けられたロータと、を有し、前記導入路が前記ハウジングに形成されていることを特徴とする請求項３に記載の内燃機関の始動装置。
The said oil pump has a housing and the rotor accommodated in the said housing, and was attached to the end of the said transmission shaft, The said introduction path is formed in the said housing. A starter for an internal combustion engine as described.
JP2004304614A 2004-10-19 2004-10-19 Starter of internal combustion engine Pending JP2006118378A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1908954A1 (en) * 2006-09-29 2008-04-09 Ford Global Technologies, LLC. Starter arrangement for an internal combustion engine
US8240286B2 (en) 2008-09-15 2012-08-14 Magna Powertrain Inc. Torque transfer unit with sealed one way clutch for an engine starting system
US9074646B2 (en) 2008-09-15 2015-07-07 Magna Powertrain Inc. Sealed high capacity overrunning roller clutch
US9097296B2 (en) 2008-09-15 2015-08-04 MagnaPowertrain, Inc. Sealed one way roller clutch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1908954A1 (en) * 2006-09-29 2008-04-09 Ford Global Technologies, LLC. Starter arrangement for an internal combustion engine
US8240286B2 (en) 2008-09-15 2012-08-14 Magna Powertrain Inc. Torque transfer unit with sealed one way clutch for an engine starting system
US9074646B2 (en) 2008-09-15 2015-07-07 Magna Powertrain Inc. Sealed high capacity overrunning roller clutch
US9097296B2 (en) 2008-09-15 2015-08-04 MagnaPowertrain, Inc. Sealed one way roller clutch

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