JPH0826765B2 - Lubricant supply device for fuel injection engine - Google Patents
Lubricant supply device for fuel injection engineInfo
- Publication number
- JPH0826765B2 JPH0826765B2 JP59011007A JP1100784A JPH0826765B2 JP H0826765 B2 JPH0826765 B2 JP H0826765B2 JP 59011007 A JP59011007 A JP 59011007A JP 1100784 A JP1100784 A JP 1100784A JP H0826765 B2 JPH0826765 B2 JP H0826765B2
- Authority
- JP
- Japan
- Prior art keywords
- fuel
- pump
- fuel injection
- lubricating oil
- engine
- 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 - Lifetime
Links
- 239000000446 fuel Substances 0.000 title claims description 130
- 238000002347 injection Methods 0.000 title claims description 98
- 239000007924 injection Substances 0.000 title claims description 98
- 239000000314 lubricant Substances 0.000 title description 2
- 239000010687 lubricating oil Substances 0.000 claims description 56
- 238000005461 lubrication Methods 0.000 claims description 38
- 230000001050 lubricating effect Effects 0.000 claims description 17
- 239000002828 fuel tank Substances 0.000 claims description 14
- 239000003921 oil Substances 0.000 description 13
- 238000002485 combustion reaction Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/02—Engines characterised by air compression and subsequent fuel addition with positive ignition
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
- F01M9/10—Lubrication of valve gear or auxiliaries
- F01M9/108—Lubrication of valve gear or auxiliaries of auxiliaries
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M43/00—Fuel-injection apparatus operating simultaneously on two or more fuels, or on a liquid fuel and another liquid, e.g. the other liquid being an anti-knock additive
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/12—Other methods of operation
- F02B2075/125—Direct injection in the combustion chamber for spark ignition engines, i.e. not in pre-combustion chamber
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は燃料噴射機関の潤滑油供給装置に関する。The present invention relates to a lubricating oil supply device for a fuel injection engine.
従来、燃料噴射機関の潤滑油供給装置において、燃料
噴射ノズルの潤滑必要部分を潤滑するために、燃料に潤
滑油を混合させることが知られている（例えば、実公昭
57−55962号公報参照）。Conventionally, in a lubricating oil supply device for a fuel injection engine, it has been known to mix lubricating oil with fuel in order to lubricate a lubrication necessary portion of a fuel injection nozzle (for example, Japanese Utility Model Publication).
57-55962).
この従来例においては、燃料タンクから燃料噴射ポン
プ本体の燃料供給口への燃料通路に潤滑油混入装置が設
けられ、潤滑油混入装置は燃料通路の途中に形成された
絞り部、及び絞り部の最大肉厚部を貫通して燃料通路に
開口し、潤滑油供給源に連通する導孔から構成されてい
る。そして、燃料通路を通過する燃料タンクからの燃料
は絞り部においてその流速が増大され、これにより生ず
る負圧によって潤滑油が導孔から導かれ、絞り部で燃料
と潤滑油が混合される。しかし、従来例では、絞り部に
生ずる負圧が充分でないと、燃料と潤滑油との混合が充
分に行われず、燃料噴射ノズルの潤滑を適正に行うこと
ができない。In this conventional example, a lubricating oil mixing device is provided in the fuel passage from the fuel tank to the fuel supply port of the fuel injection pump main body, and the lubricating oil mixing device is a throttle portion formed in the middle of the fuel passage and a throttle portion of the throttle portion. It is composed of a guide hole that penetrates the maximum wall thickness portion, opens to the fuel passage, and communicates with the lubricating oil supply source. The flow velocity of the fuel from the fuel tank passing through the fuel passage is increased in the throttle portion, and the negative pressure generated thereby guides the lubricating oil from the guide hole to mix the fuel and the lubricating oil in the throttle portion. However, in the conventional example, unless the negative pressure generated in the throttle portion is sufficient, the fuel and the lubricating oil are not sufficiently mixed and the fuel injection nozzle cannot be properly lubricated.
本発明は、燃料噴射機関の潤滑油供給装置において、
燃料と潤滑油との混合を充分に行い、燃料噴射ノズルを
適正に潤滑可能とすることを目的とする。The present invention provides a lubricating oil supply device for a fuel injection engine,
The object is to sufficiently mix the fuel and the lubricating oil so that the fuel injection nozzle can be properly lubricated.
燃料を機関に噴射供給する噴射ノズルと、燃料タンク
から噴射ノズルに燃料を供給する燃料噴射ポンプと、潤
滑油タンクから潤滑油を機関に供給する潤滑ポンプとを
備えてなる燃料噴射機関の潤滑油供給装置において、潤
滑ポンプの吐出口に接続された潤滑油経路（L4）を、燃
料タンクの燃料を燃料噴射ポンプに供給する燃料供給通
路（吸込口と燃料配管とを合わせたもの）に接続して、
燃料噴射ポンプの吸込作用によって燃料供給通路中を流
れる燃料に、潤滑ポンプから吐出された潤滑油を合流さ
せ、燃料噴射ポンプの吸込圧と潤滑ポンプの吐出圧との
作用によって潤滑油と燃料とを混合させ、その混合され
た潤滑油と燃料を前記燃料噴射ポンプの潤滑必要部分に
供給し、その混合された潤滑油と燃料を前記燃料噴射ポ
ンプから共通の供給経路を介して前記噴射ノズルの潤滑
必要部分に供給したことを構成とする。Lubricating oil for a fuel injection engine including an injection nozzle for injecting fuel into the engine, a fuel injection pump for supplying fuel from the fuel tank to the injection nozzle, and a lubricating pump for supplying lubricating oil from the lubricating oil tank to the engine In the supply device, connect the lubricating oil path (L4) connected to the discharge port of the lubrication pump to the fuel supply passage (combined suction port and fuel pipe) that supplies the fuel in the fuel tank to the fuel injection pump. hand,
The lubricating oil discharged from the lubrication pump is joined to the fuel flowing in the fuel supply passage by the suction action of the fuel injection pump, and the lubricating oil and the fuel are separated by the action of the suction pressure of the fuel injection pump and the discharge pressure of the lubrication pump. The mixed lubricating oil and fuel are supplied to the lubrication necessary portion of the fuel injection pump, and the mixed lubricating oil and fuel are lubricated from the fuel injection pump to the injection nozzle via a common supply path. It is configured to have supplied to the necessary parts.
このように構成することにより、燃料噴射ポンプの吸
込作用によって燃料供給通路中を流れる燃料に、潤滑ポ
ンプから吐出された潤滑油が合流される。そして、燃料
噴射ポンプの吸込圧と潤滑ポンプの吐出圧との作用によ
って潤滑油と燃料とが混合され、その混合された潤滑油
と燃料は燃料噴射ポンプの潤滑必要部分に供給され、さ
らに、燃料噴射ポンプから共通の供給経路を通って噴射
ノズルの潤滑必要部分に供給される。With this configuration, the lubricating oil discharged from the lubricating pump joins the fuel flowing in the fuel supply passage due to the suction action of the fuel injection pump. Then, the lubricating oil and the fuel are mixed by the action of the suction pressure of the fuel injection pump and the discharge pressure of the lubricating pump, and the mixed lubricating oil and the fuel are supplied to the lubrication-needed portion of the fuel injection pump. It is supplied from the injection pump to a lubrication necessary portion of the injection nozzle through a common supply path.
第１図は本発明の第１実施例を示す模式図である。 FIG. 1 is a schematic diagram showing a first embodiment of the present invention.
機関10は、２サイクル内燃機関であり、気筒11及びク
ランプケース12を有し、気筒11に収容されるピストン13
の頂面側に燃焼室14を画成し、ピストン13の背面側にク
ランク室15を画成している。また、機関10は、クランク
室15に連なり燃焼用空気を導入可能とする吸気通路16、
クランク室15と燃焼室14とを連通可能とする掃気通路1
7、燃焼室14に連なり既燃ガスを排出可能とする排気通
路18を備えている。なお、吸気通路16にはリード弁19が
配置されている。The engine 10 is a two-cycle internal combustion engine, has a cylinder 11 and a clamp case 12, and has a piston 13 housed in the cylinder 11.
A combustion chamber 14 is defined on the top surface side of the piston, and a crank chamber 15 is defined on the back surface side of the piston 13. Further, the engine 10 is connected to the crank chamber 15 and is provided with an intake passage 16 for introducing combustion air,
Scavenging passage 1 enabling communication between the crank chamber 15 and the combustion chamber 14
7. The exhaust passage 18 is connected to the combustion chamber 14 and is capable of discharging burned gas. A reed valve 19 is arranged in the intake passage 16.
機関10は、気筒11に点火栓20及び燃焼噴射ノズル21を
配置するとともに、燃料タンク22に連なる分配型の燃料
噴射ポンプ23を備えている。燃料噴射ポンプ23は、機関
10のクランク軸24に連動可能に結合されている。また、
機関10は、潤滑油タンク25に連なる潤滑ポンプ26を備え
ている。潤滑ポンプ26は、機関10のクランク軸24に連動
可能に結合されている。The engine 10 has a spark plug 20 and a combustion injection nozzle 21 arranged in a cylinder 11, and a distribution type fuel injection pump 23 connected to a fuel tank 22. The fuel injection pump 23 is an engine
It is connected to 10 crankshafts 24 so as to be interlocked. Also,
The engine 10 includes a lubrication pump 26 connected to a lubrication oil tank 25. The lubrication pump 26 is coupled to the crankshaft 24 of the engine 10 so as to be interlocked.
潤滑ポンプ26は、機関10の運転時に、クランク軸24に
連動して駆動され、配管L1を介して、潤滑油タンク25の
潤滑油を吸込口27から吸込可能としている。潤滑ポンプ
26の吐出油の一部は、吐出口28に接続される配管L2を介
して、機関10のクランク軸24、連接棒29の回転部等に
（燃料噴射ポンプ23を介さず）直接的に供給可能とさ
れ、吐出口30に接続される配管L3を介して、機関10のピ
ストン13まわりの摺動部等に（燃料噴射ポンプ23を介さ
ず）直接的に供給可能とされている。The lubricating pump 26 is driven in conjunction with the crankshaft 24 when the engine 10 is operating, and is capable of sucking the lubricating oil in the lubricating oil tank 25 from the suction port 27 via the pipe L1. Lubrication pump
A part of the discharge oil of 26 is directly supplied to the crankshaft 24 of the engine 10, the rotating part of the connecting rod 29, etc. (without passing through the fuel injection pump 23) via the pipe L2 connected to the discharge port 28. It is enabled and can be directly supplied to the sliding portion around the piston 13 of the engine 10 (not via the fuel injection pump 23) via the pipe L3 connected to the discharge port 30.
潤滑ポンプ26の吐出油の他の一部は、吐出口31に接続
される配管L4（潤滑油経路）を介して、燃料噴射ポンプ
23の吸込口32に吸込可能とされている。燃料噴射ポンプ
23の吸込口32は、燃料配管L5を介して、燃料タンク22の
燃料をも吸込可能としている。具体的には、潤滑ポンプ
26の吐出口31に接続された潤滑油経路（L4）を、燃料タ
ンク22の燃料を燃料噴射ポンプ23に供給する燃料供給通
路に接続する。そして、燃料噴射ポンプ23の吸込作用に
よって燃料供給通路中を流れる燃料に、潤滑ポンプ26か
ら吐出された潤滑油を合流させ、燃料噴射ポンプ23の吸
込圧と潤滑ポンプ26の吐出圧との作用によって潤滑油と
燃料とを混合させる。すなわち、潤滑ポンプ26の吐出油
の上記他の一部は、第２図及び第３図に示されるような
燃料噴射ポンプ23に内蔵されているベーン式フィードポ
ンプ33の作動下で、燃料と混和された状態で燃料噴射ポ
ンプ23の内部に吸込まれ、燃料噴射ポンプ23の内部機構
を潤滑した後、燃料とともに燃料噴射ノズル21に送ら
れ、燃料噴射ノズル21を潤滑しながら高圧噴射可能とさ
れている。The other part of the oil discharged from the lubricating pump 26 is supplied to the fuel injection pump via the pipe L4 (lubricating oil path) connected to the discharge port 31.
It can be sucked into the suction port 32 of 23. Fuel injection pump
The suction port 32 of 23 can also suck the fuel in the fuel tank 22 through the fuel pipe L5. Specifically, the lubrication pump
The lubricating oil path (L4) connected to the discharge port 31 of 26 is connected to the fuel supply passage for supplying the fuel in the fuel tank 22 to the fuel injection pump 23. Then, due to the suction action of the fuel injection pump 23, the lubricating oil discharged from the lubrication pump 26 is joined to the fuel flowing in the fuel supply passage, and the suction pressure of the fuel injection pump 23 and the discharge pressure of the lubrication pump 26 cause the action. Mix the lubricating oil and the fuel. That is, the other part of the oil discharged from the lubricating pump 26 is mixed with the fuel under the operation of the vane type feed pump 33 incorporated in the fuel injection pump 23 as shown in FIGS. 2 and 3. In this state, after being sucked into the fuel injection pump 23 and lubricating the internal mechanism of the fuel injection pump 23, it is sent to the fuel injection nozzle 21 together with the fuel, and high pressure injection is possible while lubricating the fuel injection nozzle 21. There is.
ここで、燃料噴射ポンプ23のフィードポンプ33は、ク
ランク軸24に連動可能に結合されているドライブ軸34の
回転によって駆動され、その送油圧は、圧力調整弁35の
作用によって制御され、相互に混和された燃料および潤
滑油は、フィードポンプ33の吐出側からポンプ室36へ送
油可能とされている。燃料噴射ポンプ23のポンププラン
ジャ37は、ドライブ軸34に接続されたカムプレート38に
よって駆動され、回転運動するとともに往復運動して、
ポンプ室36の燃料及び潤滑油を吸入した後、分配通路3
9、分配弁40を通って、配管L6（共通の供給経路）に圧
送し、ひいては燃料噴射ノズル21から高圧噴射可能とさ
れている。なお、燃料噴射ノズル21の噴射量は、スピル
リング41の移動によって制御可能とされている。Here, the feed pump 33 of the fuel injection pump 23 is driven by the rotation of a drive shaft 34 that is coupled to the crankshaft 24 in an interlocking manner, and the hydraulic pressure thereof is controlled by the action of a pressure regulating valve 35 and is mutually The mixed fuel and lubricating oil can be sent to the pump chamber 36 from the discharge side of the feed pump 33. The pump plunger 37 of the fuel injection pump 23 is driven by a cam plate 38 connected to the drive shaft 34 to rotate and reciprocate,
After sucking the fuel and lubricating oil in the pump chamber 36, the distribution passage 3
9. The pressure is sent to the pipe L6 (common supply path) through the distribution valve 40, and thus the fuel injection nozzle 21 is capable of high-pressure injection. The injection amount of the fuel injection nozzle 21 can be controlled by moving the spill ring 41.
次に、第１実施例の作用について説明する。 Next, the operation of the first embodiment will be described.
機関10の運転とともに、クランク軸24の回転速度の変
化に対応して燃料噴射ポンプ23、潤滑ポンプ26の両者が
駆動され、燃料噴射ポンプ23は燃料タンク22の燃料等を
吸込み、潤滑ポンプ26は潤滑油タンク25の潤滑油を吸込
む。As the engine 10 is operated, both the fuel injection pump 23 and the lubrication pump 26 are driven in response to changes in the rotation speed of the crankshaft 24, the fuel injection pump 23 sucks the fuel and the like in the fuel tank 22, and the lubrication pump 26 Suction the lubricating oil in the lubricating oil tank 25.
潤滑ポンプ26の吐出油の一部は、機関10のクランク軸
24、連接棒29の回転部、ピストン13のまわりの摺動部等
に直接的に供給され、従って、燃料噴射ポンプ23の作動
に伴う圧力脈動の影響を受けることなく、機関10の潤滑
必要部分を安定かつ適正に潤滑可能とする。また、潤滑
ポンプ26の吐出油の他の一部は、燃料噴射ポンプ23に供
給され、燃料噴射ポンプ23の潤滑必要部分を適正に潤滑
可能とする。従って、潤滑ポンプ26の吐出油の一部が機
関10の運転状態の変化に即応して機関10の潤滑必要部分
に供給され、潤滑ポンプ26の吐出量を急加速時等におけ
る潤滑不足を見込んで多目に設定する等の不都合を伴う
ことなく、また燃料噴射ポンプ23への潤滑油供給を必要
最小限の補給に留めることを可能とし、潤滑油消費量の
節減を図ることも可能となる。A part of the oil discharged from the lubrication pump 26 is part of the crankshaft of the engine 10.
24, the rotating portion of the connecting rod 29, the sliding portion around the piston 13 and the like are directly supplied. Therefore, the lubrication necessary portion of the engine 10 is not affected by the pressure pulsation accompanying the operation of the fuel injection pump 23. Enables stable and proper lubrication. Further, another part of the oil discharged from the lubrication pump 26 is supplied to the fuel injection pump 23 so that the lubrication necessary part of the fuel injection pump 23 can be appropriately lubricated. Therefore, a part of the oil discharged from the lubrication pump 26 is supplied to the lubrication-needed portion of the engine 10 in response to a change in the operating state of the engine 10, and the discharge amount of the lubrication pump 26 is expected to be insufficient during lubrication. Lubricating oil supply to the fuel injection pump 23 can be limited to the necessary minimum replenishment without inconvenience such as a large number of settings, and the amount of lubricating oil consumption can be reduced.
潤滑ポンプ26からの潤滑油と燃料タンク22からの燃料
を燃料供給通路にて予め混合して燃料噴射ポンプ23の潤
滑必要部分に供給したので、燃料噴射ポンプ23に潤滑油
吸入口と燃料吸入口を別々に設けて、燃料噴射ポンプ23
の内部で混合する場合に比べて、簡単な構造で、かつ確
実に燃料噴射ポンプ23の内部を潤滑できる。潤滑油を燃
料噴射ポンプ23に供給するのに、潤滑ポンプ26の吐出圧
（正圧）と燃料噴射ポンプ26の吸込圧（負圧）の両方を
利用でき、燃料噴射ポンプ23のみならず噴射ノズル21に
も十分な量の潤滑油を送り込むことができ、燃料噴射ポ
ンプ23及び噴射ノズル21の潤滑必要部分を確実に潤滑で
きる。燃料噴射ポンプ23及び噴射ノズル21の潤滑に供さ
れた潤滑油は、燃料に混和して燃焼室14で燃焼せしめら
れる。よって、一旦潤滑に供され劣化した潤滑油を再循
環使用することなく、潤滑油による潤滑性能を維持しな
がら、該潤滑油を機関10の燃焼エネルギ源として有効利
用することとなる。The lubricating oil from the lubrication pump 26 and the fuel from the fuel tank 22 were mixed in advance in the fuel supply passage and supplied to the lubrication-needed portion of the fuel injection pump 23. Separately, the fuel injection pump 23
As compared with the case of mixing inside the fuel injection pump, the inside of the fuel injection pump 23 can be reliably lubricated with a simple structure. Both the discharge pressure (positive pressure) of the lubrication pump 26 and the suction pressure (negative pressure) of the fuel injection pump 26 can be used to supply the lubricating oil to the fuel injection pump 23, and not only the fuel injection pump 23 but also the injection nozzle A sufficient amount of lubricating oil can be sent to 21 as well, and the lubrication necessary parts of the fuel injection pump 23 and the injection nozzle 21 can be reliably lubricated. The lubricating oil used to lubricate the fuel injection pump 23 and the injection nozzle 21 is mixed with the fuel and burned in the combustion chamber 14. Therefore, the lubricating oil that has been once lubricated and deteriorated can be effectively used as a combustion energy source of the engine 10 while maintaining the lubricating performance of the lubricating oil without recirculating the lubricating oil.
第４図は本発明の第２実施例を示す模式図であり、前
記第１実施例と同様な部分には同一の符号を付すものと
する。FIG. 4 is a schematic diagram showing a second embodiment of the present invention, and the same parts as those in the first embodiment are designated by the same reference numerals.
この第２実施例は、第５図に示す列型の燃料噴射ポン
プ51を用いており、燃料噴射ポンプ51は、カム室52に配
設され、クランク軸24に連動可能とされているカム53に
よって、ポンププランジャ54を駆動し、燃料タンク22の
燃料を、配管H1、吸込口55を介して吸入した後、分配弁
56を通して配管H2に圧送し、ひいては燃料噴射ノズル21
から高圧噴射可能としている。なお、燃料噴射ノズル21
からの噴射量は、コントロールラック57の駆動によるコ
ントロールスリーブ58の回転によって制御可能とされ
る。This second embodiment uses a row-type fuel injection pump 51 shown in FIG. 5, and the fuel injection pump 51 is arranged in a cam chamber 52, and a cam 53 that can be interlocked with the crankshaft 24. Drive the pump plunger 54 to suck the fuel in the fuel tank 22 through the pipe H1 and the suction port 55, and then the distribution valve
It is pumped to the pipe H2 through 56, and then the fuel injection nozzle 21
It enables high pressure injection. The fuel injection nozzle 21
The injection amount from is controllable by the rotation of the control sleeve 58 driven by the control rack 57.
しかして、この第２実施例においては、前記第１実施
例におけると同様に、潤滑ポンプ26が、機関10の運転時
に、クランク軸24に連動して駆動され、配管L1を介し
て、潤滑油タンク25の潤滑油を吸込口27に吸込可能とし
ている。上記潤滑ポンプ26の吐出油の一部は、吐出口28
に接続される配管L2を介して、機関10のクランク軸24、
連接棒29の回転部等に直接的に供給可能とされ、吐出口
30に接続される配管L3を介して、機関10のピストン13の
まわりの摺動部等に直接的に供給可能とされている。Therefore, in the second embodiment, as in the first embodiment, the lubrication pump 26 is driven in conjunction with the crankshaft 24 during operation of the engine 10, and the lubricating oil is supplied via the pipe L1. The lubricating oil in the tank 25 can be sucked into the suction port 27. A part of the oil discharged from the lubricating pump 26 is partially discharged from the discharge port 28.
Via a pipe L2 connected to the crankshaft 24 of the engine 10,
It can be directly supplied to the rotating part of the connecting rod 29, and the discharge port
It can be directly supplied to a sliding portion around the piston 13 of the engine 10 or the like via a pipe L3 connected to 30.
また、この第２実施例においては、上記潤滑ポンプ26
の吐出油の他の一部が、吐出口31に接続される配管H3、
燃料噴射ポンプ51の吐出口59を介してカム室５に吸入さ
れた後、吐出口60、配管H4を介して機関10のピストン13
のまわりの摺動部に供給可能とされる。なお、上記潤滑
ポンプ26の吐出油の他の一部を、吐出口31に接続される
配管H5、燃料噴射ポンプ51の吸込口61を介して、吸込口
55から吸込まれた燃料と混和する状態で燃料噴射ポンプ
51の内部に導入し、燃料噴射ポンプ51のポンププランジ
ャ54、分配弁56等を潤滑した後、さらに燃料噴射ノズル
21を潤滑しながら高圧噴射させてもよい。また、燃料噴
射ポンプ51の吐出口60から配管H4に吐出された潤滑油の
一部を、配管H6を介して配管H2の中間部に送油し、燃料
と混和させた状態で燃料噴射ノズル21を潤滑しながら高
圧噴射させてもよい。Further, in the second embodiment, the lubricating pump 26
Other part of the discharge oil of the pipe H3 connected to the discharge port 31,
After being sucked into the cam chamber 5 through the discharge port 59 of the fuel injection pump 51, the piston 13 of the engine 10 is discharged through the discharge port 60 and the pipe H4.
Can be supplied to the sliding portion around the. The other part of the oil discharged from the lubrication pump 26 is sucked through a pipe H5 connected to the discharge port 31 and a suction port 61 of the fuel injection pump 51.
Fuel injection pump in a state of being mixed with the fuel sucked from 55
It is introduced into the inside of the fuel injection pump 51, and after lubricating the pump plunger 54, the distribution valve 56, etc. of the fuel injection pump 51, further fuel injection nozzle
It is also possible to inject high pressure while lubricating 21. Further, a part of the lubricating oil discharged from the discharge port 60 of the fuel injection pump 51 to the pipe H4 is sent to the intermediate portion of the pipe H2 via the pipe H6 and mixed with the fuel, and the fuel injection nozzle 21 May be injected while high pressure is being lubricated.
すなわち、上記第２実施例による場合にも、潤滑ポン
プ26の吐出油の一部は、配管L2、L3を介して、燃料噴射
ポンプ51の作動の影響を受けることなく機関10の潤滑必
要部分に直接的に供給され、その潤滑必要部分を安定か
つ適正に潤滑可能とする。また、潤滑ポンプ26の吐出油
の他の一部は、配管H3、H5を介して、燃料噴射ポンプ51
に供給され、燃料噴射ポンプ51、更には噴射ノズル21の
潤滑必要部分を適正に潤滑する。That is, also in the case of the second embodiment, a part of the oil discharged from the lubrication pump 26 passes through the pipes L2 and L3 to the lubrication necessary portion of the engine 10 without being affected by the operation of the fuel injection pump 51. It is directly supplied and it is possible to lubricate the lubrication required part stably and properly. The other part of the oil discharged from the lubrication pump 26 is supplied to the fuel injection pump 51 via the pipes H3 and H5.
Is appropriately supplied to the fuel injection pump 51 and further to the lubrication necessary portion of the injection nozzle 21.
本発明では、潤滑ポンプの吐出口に接続された潤滑油
経路（L4）を、燃料噴射ポンプの吸込口と燃料タンクを
接続する燃料配管（L5）に接続した。従って、燃料配管
（L5）中で燃料噴射ポンプの吸込作用によって吸い込ま
れる負圧の燃料に、潤滑ポンプから吐出された正圧の潤
滑油が、大きな差圧によって勢いよく混合される。こう
して、燃料と潤滑油との混合が充分に行われ、燃料噴射
ノズルの潤滑を適正に行うことができる。In the present invention, the lubricating oil path (L4) connected to the discharge port of the lubrication pump is connected to the fuel pipe (L5) connecting the suction port of the fuel injection pump and the fuel tank. Therefore, the positive pressure lubricating oil discharged from the lubricating pump is vigorously mixed with the negative pressure fuel sucked by the suction action of the fuel injection pump in the fuel pipe (L5). Thus, the fuel and the lubricating oil are sufficiently mixed, and the fuel injection nozzle can be properly lubricated.
第１図は本発明の第１実施例を示す模式図、第２図は第
１図の噴射ポンプを取出して示す断面図、第３図は第２
図のIII−III線に沿う断面図、第４図は本発明の第２実
施例を示す模式図、第５図は第４図の噴射ポンプを取り
出して示す断面図である。 10……機関、21……噴射ノズル、２……燃料タンク、23
……噴射ポンプ、25……潤滑油タンク、26……潤滑ポン
プ、32……吸込口FIG. 1 is a schematic view showing a first embodiment of the present invention, FIG. 2 is a sectional view showing the injection pump of FIG. 1 taken out, and FIG.
FIG. 4 is a sectional view taken along line III-III in FIG. 4, FIG. 4 is a schematic view showing a second embodiment of the present invention, and FIG. 5 is a sectional view showing the injection pump of FIG. 4 taken out. 10 …… Engine, 21 …… Injection nozzle, 2 …… Fuel tank, 23
…… Injection pump, 25 …… Lubricant oil tank, 26 …… Lubrication pump, 32 …… Suction port
Claims (1)
燃料タンクから噴射ノズルに燃料を供給する燃料噴射ポ
ンプと、潤滑油タンクから潤滑油を機関に供給する潤滑
ポンプとを備えてなる燃料噴射機関の潤滑油供給装置に
おいて、 潤滑ポンプの吐出口に接続された潤滑油経路（L4）を、
燃料タンクの燃料を燃料噴射ポンプに供給する燃料供給
通路に接続して、燃料噴射ポンプの吸込作用によって燃
料供給通路中を流れる燃料に、潤滑ポンプから吐出され
た潤滑油を合流させ、燃料噴射ポンプの吸込圧と潤滑ポ
ンプの吐出圧との作用によって潤滑油と燃料とを混合さ
せ、その混合された潤滑油と燃料を前記燃料噴射ポンプ
の潤滑必要部分に供給し、その混合された潤滑油と燃料
を前記燃料噴射ポンプから共通の供給経路を介して前記
噴射ノズルの潤滑必要部分に供給したことを特徴とする
燃料噴射機関の潤滑油供給装置。1. An injection nozzle for injecting and supplying fuel to an engine,
In a lubricating oil supply device of a fuel injection engine, comprising a fuel injection pump for supplying fuel from a fuel tank to an injection nozzle and a lubricating pump for supplying lubricating oil from a lubricating oil tank to an engine, connected to a discharge port of the lubricating pump Lubricating oil path (L4)
The fuel in the fuel tank is connected to the fuel supply passage that supplies the fuel to the fuel injection pump, and the lubricating oil discharged from the lubrication pump merges with the fuel flowing in the fuel supply passage due to the suction action of the fuel injection pump. Of the lubricating oil and the fuel are mixed by the action of the suction pressure of the pump and the discharge pressure of the lubricating pump, and the mixed lubricating oil and the fuel are supplied to the lubrication necessary portion of the fuel injection pump, and the mixed lubricating oil and A lubricating oil supply apparatus for a fuel injection engine, wherein fuel is supplied from the fuel injection pump to a lubrication necessary portion of the injection nozzle via a common supply path.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59011007A JPH0826765B2 (en) | 1984-01-26 | 1984-01-26 | Lubricant supply device for fuel injection engine |
| US06/695,270 US4700671A (en) | 1984-01-26 | 1985-01-28 | Internal combustion engine provided with fuel injection device |
| US07/026,983 US4730580A (en) | 1984-01-26 | 1987-03-11 | Internal combustion engine provided with fuel injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59011007A JPH0826765B2 (en) | 1984-01-26 | 1984-01-26 | Lubricant supply device for fuel injection engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60156919A JPS60156919A (en) | 1985-08-17 |
| JPH0826765B2 true JPH0826765B2 (en) | 1996-03-21 |
Family
ID=11766059
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59011007A Expired - Lifetime JPH0826765B2 (en) | 1984-01-26 | 1984-01-26 | Lubricant supply device for fuel injection engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0826765B2 (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS595122Y2 (en) * | 1979-10-05 | 1984-02-16 | ヤンマーディーゼル株式会社 | Internal combustion engine lubricating oil distribution device |
| JPS5755962U (en) * | 1980-09-16 | 1982-04-01 | ||
| JPS58104326U (en) * | 1982-01-11 | 1983-07-15 | 株式会社デンソー | Fuel injection device for internal combustion engines |
| JPS58150014A (en) * | 1982-03-01 | 1983-09-06 | Nippon Clean Engine Res | L.o. supplying system in 2-cycle fuel injection engine |
| JPS60113011A (en) * | 1983-11-22 | 1985-06-19 | Yanmar Diesel Engine Co Ltd | Lubricating device for 2-cycle internal-combustion engine |
-
1984
- 1984-01-26 JP JP59011007A patent/JPH0826765B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60156919A (en) | 1985-08-17 |
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