JPH02215966A - Fuel injection system for internal combustion engine - Google Patents
Fuel injection system for internal combustion engineInfo
- Publication number
- JPH02215966A JPH02215966A JP1035736A JP3573689A JPH02215966A JP H02215966 A JPH02215966 A JP H02215966A JP 1035736 A JP1035736 A JP 1035736A JP 3573689 A JP3573689 A JP 3573689A JP H02215966 A JPH02215966 A JP H02215966A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- tappet
- pin
- passage
- roller
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims description 18
- 238000002347 injection Methods 0.000 title claims description 15
- 239000007924 injection Substances 0.000 title claims description 15
- 238000002485 combustion reaction Methods 0.000 title claims description 4
- 239000010687 lubricating oil Substances 0.000 claims abstract description 81
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 description 5
- 239000000314 lubricant Substances 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
Classifications
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
この発明は内燃機関、特にディーゼル機関の燃お１噴射
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fuel injection device for internal combustion engines, particularly diesel engines.
［従来技術］
近時ディーゼル機関（以後エンジンと言う）の排気ガス
浄化対策として燃料噴射装置の高圧化が盛んに行なわれ
るようになってきている。然し、従来の朝型燃料噴射装
置では高圧化に伴って高圧を発生させるプランジャの駆
動部、すなわちタペットやタペットを動かすためのエン
ジン駆動のカムにかかる負荷が増大し、タペットを構成
するタペットピン、タペットローラ、タペットボデー及
びカム面に剥離、ピッチングが発生し易くなってきた。[Prior Art] Recently, as a measure to purify the exhaust gas of diesel engines (hereinafter referred to as engines), increasing the pressure of fuel injection devices has become popular. However, in conventional morning-type fuel injection systems, as the pressure increases, the load on the plunger drive unit that generates high pressure, that is, the tappet and the engine-driven cam that moves the tappet, increases, and the tappet pin and tappet that make up the tappet increase. Peeling and pitching are becoming more likely to occur on the roller, tappet body, and cam surface.
［発明が解決しようとする課題］
この対策として燃料噴射装置内の潤滑油面を確保し、は
ぼ常にプランジャ駆動部に潤滑油が行き渡るようにした
技術が多数存在する。例えばカム室に溜められている潤
滑油を回転するカムにより掻き上げてタペットピン、タ
ペットローラ、タペットボデーを潤滑する方法がある。[Problems to be Solved by the Invention] As a countermeasure to this problem, there are many techniques for securing a lubricating oil level in the fuel injection device so that the lubricating oil almost always reaches the plunger drive section. For example, there is a method in which lubricating oil stored in a cam chamber is scraped up by a rotating cam to lubricate the tappet pin, tappet roller, and tappet body.
然し燃料噴射装置内に潤滑油面を確保しても、更には確
保した潤滑油面から潤滑油をカムで掻き上げてもタペッ
トローラとタペットピン間の遊嵌機構には潤滑油が十分
に行き渡らないのが現状である。However, even if a lubricating oil level is secured in the fuel injection device, and even if the lubricating oil is scraped up from the lubricating oil level with a cam, the lubricating oil will not be sufficiently distributed to the loose fitting mechanism between the tappet roller and tappet pin. is the current situation.
この発明は簡素な機構によりタペットローラとタペット
ピン間の遊嵌部に潤滑油が確実に供給される内燃機関の
燃料噴射装置の提供を課題とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a fuel injection device for an internal combustion engine in which lubricating oil is reliably supplied to a loose fitting portion between a tappet roller and a tappet pin using a simple mechanism.
なお、本願の先行技術資料として実公昭５３−１２３３
５号公報及び本出願人の出願に係わる特願昭６３−２４
９４７４号がある。In addition, as the prior art material of this application, Utility Model Publication No. 53-1233
Publication No. 5 and the patent application filed by the applicant in 1983-24
There is No. 9474.
［課題を解決するための技術的手段］
上記の課題を解決するためこの発明はタペットピン及び
これに遊嵌するタペットローラを含み、タペットローラ
と遊嵌する部位においてタペットピンの表面に開口する
潤滑油通路をタペットピンに備え、この潤滑油通路に常
時又は断続的に連通ずる潤滑油入口通路を備え、この潤
滑油入口通路から前記潤滑油通路に供給された潤滑油を
前記開口から強制的に流出させる機構を備えた構成を有
している。[Technical Means for Solving the Problems] In order to solve the above problems, the present invention includes a tappet pin and a tappet roller that is loosely fitted to the tappet pin, and a lubricating oil passage that opens on the surface of the tappet pin at a portion that is loosely fitted to the tappet roller. a tappet pin, a lubricating oil inlet passage that communicates with the lubricating oil passage constantly or intermittently, and a mechanism for forcing the lubricating oil supplied to the lubricating oil passage from the opening to flow out from the lubricating oil inlet passage. It has a configuration with.
［作用］
潤滑油入口通路から前記潤滑油通路に供給された潤滑油
は潤滑油強制流出機構によりタペットピンとタペットロ
ーラとの遊嵌部に設けた潤滑油通路の開口から強制的に
流出させられ、タペットピンとタペットローラとの遊嵌
部を潤滑し、これらの剥離を防止する。なお、タペット
ローラとカムとの接触面などは従来の方法で潤滑される
。[Operation] The lubricating oil supplied from the lubricating oil inlet passage to the lubricating oil passage is forcibly flowed out from the opening of the lubricating oil passage provided at the loose fitting portion of the tappet pin and the tappet roller by the lubricating oil forced outflow mechanism, Lubricates the loosely fitted parts of the tappet pin and tappet roller to prevent them from peeling off. Note that the contact surfaces between the tappet roller and the cam are lubricated using conventional methods.
［実施例］
以下実施例を示す図面によりこの発明を説明する。一般
に燃料噴射装置はエンジンのクランク軸により駆動され
るカム軸に固定したカムと燃料の圧送を行うプランジャ
とをタペットを介して連結した構成になっている。先ず
第１実施例の朝型燃料噴射装置Ｅ１を第１図により説明
すると、タペット１はフォーク状の延出部４ａ、４ａを
有するタペットボデー４と、延出部４ａ、４ａに嵌合さ
れたタペットピン２と、タペットピン２に遊嵌されたタ
ペットローラ３とから構成されており、タペットボデー
４は燃料噴射装置ハウジング５の気筒５ａ内に摺動可能
に収納されている。タペットローラ３はカム６の面に接
触している。カム６は図示しないカム軸を介して同じく
図示しないエンジンのクランク軸に連結されている。１
３はプランジャでその下部は下部ばね受け１４に係合し
、上部は図示しないシリンダとの間で圧縮室を形成し、
第１図で上下方向に摺動することにより燃料の圧送に寄
与している。下部ばね受け１４と図示しない上部ばね受
けとの間にプランジャスプリング１５が配設され、プラ
ンジャ１３を図で下方に付勢している。カム６の回転に
よりカム面上をタペットローラ３が転勤し、これにとも
ないプランジャスプリンタ１５が伸縮し、タペット１は
ハウジング５の気筒５ａ内を上下往復運動する。従って
プランジャ１３が往復運動して燃料噴射を行う。[Examples] The present invention will be described below with reference to drawings showing examples. Generally, a fuel injection device has a configuration in which a cam fixed to a camshaft driven by the crankshaft of an engine and a plunger that pumps fuel are connected via a tappet. First, the morning type fuel injection device E1 of the first embodiment will be explained with reference to FIG. It is composed of a tappet pin 2 and a tappet roller 3 loosely fitted to the tappet pin 2, and the tappet body 4 is slidably housed within the cylinder 5a of the fuel injection device housing 5. The tappet roller 3 is in contact with the surface of the cam 6. The cam 6 is connected to a crankshaft of an engine (also not shown) via a camshaft (not shown). 1
3 is a plunger whose lower part engages with the lower spring receiver 14, and whose upper part forms a compression chamber with a cylinder (not shown);
By sliding vertically in FIG. 1, it contributes to the pumping of fuel. A plunger spring 15 is disposed between the lower spring receiver 14 and an upper spring receiver (not shown), and urges the plunger 13 downward in the figure. As the cam 6 rotates, the tappet roller 3 moves on the cam surface, the plunger printer 15 expands and contracts, and the tappet 1 reciprocates up and down within the cylinder 5a of the housing 5. Therefore, the plunger 13 reciprocates to perform fuel injection.
タペットピン２にはその軸方向に貫通する潤滑油通路７
と、潤滑油通路７と連通し、タペットローラ３との遊嵌
部においてタペットピン２の円周面２ａ上に開口８ａを
有する潤滑油通路８とが設けられている。ハウジング５
にはタペット１が往復運動を行う行程の任意の位置に潤
滑油通路７と連通ずる潤滑油入口通路９が設けられてお
り、同通路９はハウジング５に設けた潤滑油人口１２と
連通している。A lubricating oil passage 7 passes through the tappet pin 2 in its axial direction.
A lubricating oil passage 8 is provided which communicates with the lubricating oil passage 7 and has an opening 8a on the circumferential surface 2a of the tappet pin 2 at a loosely fitting portion with the tappet roller 3. housing 5
is provided with a lubricating oil inlet passage 9 that communicates with a lubricating oil passage 7 at an arbitrary position in the stroke of the tappet 1 in reciprocating motion, and the passage 9 communicates with a lubricating oil port 12 provided in the housing 5. There is.
上記の構成において、タペット１が上下往復運動する過
程において、潤滑油通路７と潤滑油入口通路９とが連通
すると潤滑油人口１２から潤滑油入口通路９を経て潤滑
油通路７に供給された潤滑油は、潤滑油通路７の左端の
開ロアａがハウジング５の気筒５ａの壁面５ｂと接触し
ているので潤滑油は開ロアａから僅かに漏洩するだけで
、強制的に潤滑油通路８を通って開口８ａからタペット
ピン２とタペットローラ３との遊嵌部に流出し、遊嵌部
を潤滑して遊嵌部の焼き付きを防止する。In the above configuration, when the lubricating oil passage 7 and the lubricating oil inlet passage 9 communicate with each other during the vertical reciprocation of the tappet 1, the lubricant is supplied from the lubricating oil passage 12 to the lubricating oil passage 7 via the lubricating oil inlet passage 9. Since the open lower a at the left end of the lubricating oil passage 7 is in contact with the wall surface 5b of the cylinder 5a of the housing 5, the lubricating oil leaks only slightly from the open lower a and is forced into the lubricating oil passage 8. The fluid passes through the opening 8a and flows out to the loosely fitted portion between the tappet pin 2 and tappet roller 3, lubricates the loosely fitted portion and prevents seizure of the loosely fitted portion.
第２図は第２実施例の朝型燃料噴射装置Ｅ２を示す。な
お、第１図と同じ構成要素に対しては同じ符号を付しそ
の説明を省く。第２図において潤滑油通路７はタペット
ピン２をその軸方向に貫通せず閉鎖端部７ｂで行き止ま
りになっている。FIG. 2 shows a morning type fuel injection device E2 of a second embodiment. Note that the same components as in FIG. 1 are given the same reference numerals and their explanations will be omitted. In FIG. 2, the lubricating oil passage 7 does not pass through the tappet pin 2 in its axial direction, but ends at a closed end 7b.
従って朝型燃料噴射装置Ｅ２では潤滑油通路７に入った
潤滑油はすべて潤滑油通路８に流れ、開口８ａからタペ
ットピン２とタペットローラ３との遊嵌部に流出する。Therefore, in the morning type fuel injection device E2, all the lubricating oil that has entered the lubricating oil passage 7 flows into the lubricating oil passage 8, and flows out from the opening 8a to the loosely fitted portion between the tappet pin 2 and the tappet roller 3.
このため第１実施例の場合よりもタペットピン２及びタ
ペットローラ３に対する潤滑効果は高い。Therefore, the lubrication effect on the tappet pin 2 and tappet roller 3 is higher than in the first embodiment.
第３図（イ）、（ロ）は第３実施例の装＠Ｅ３を示す。FIGS. 3(A) and 3(B) show the mounting @E3 of the third embodiment.
装置Ｅ３においてはハウジング５の気筒５ａの壁面５ｂ
に上下方向の溝１６が設けられ、タペットピン２の左端
（第３図において）はタペットボデー４の延出部４ａを
貝通して溝１６内に進出し、この進出部２ｂにスライダ
１０が外嵌されている。スライダ１０は溝１６に対し摺
動可能に収容されている。スライダ１０及び溝１６の長
ざはタペット１の往復運動に見合った寸法に設定されて
いる。従ってスライダ１０はタペット１がその往復運動
方向を軸として回動するのを防止している。これはタペ
ットピン２とカム６０図示しないカム軸とを平行に維持
するためである。なお、第３図において第１図と同じ構
成要素に対して同じ符号を付しその説明を省く。In the device E3, the wall surface 5b of the cylinder 5a of the housing 5
A vertical groove 16 is provided in the tappet pin 2, and the left end (in FIG. 3) of the tappet pin 2 passes through the extended portion 4a of the tappet body 4 and advances into the groove 16, and the slider 10 is externally fitted into this advanced portion 2b. has been done. The slider 10 is slidably accommodated in the groove 16. The lengths of the slider 10 and the groove 16 are set to match the reciprocating motion of the tappet 1. Therefore, the slider 10 prevents the tappet 1 from rotating about its reciprocating direction. This is to maintain the tappet pin 2 and the cam 60 parallel to the cam shaft (not shown). In FIG. 3, the same components as in FIG. 1 are given the same reference numerals and their explanations will be omitted.
装置Ｅ３ではスライダ１０により潤滑油通路７の漏洩が
少なくなり、潤滑油は強制的に潤滑油通路８を経て開口
８ａからタペットピン２とタペットローラ３とのＴ１嵌
部に供給され、焼き付きを防止する。In the device E3, the slider 10 reduces leakage in the lubricating oil passage 7, and lubricating oil is forcibly supplied through the lubricating oil passage 8 from the opening 8a to the T1 fitting portion between the tappet pin 2 and the tappet roller 3, thereby preventing seizure. .
第３図（ハ）は第４実施例の装置Ｅ４を示す。FIG. 3(c) shows a device E4 of the fourth embodiment.
この実施例は第３実施例の装置Ｅ３においてスライダ１
０が溝１６と接触する面１０ａにリセス１１を設けたも
のであり、リセス１１はスライダ１０のタペットピン２
に対する嵌合孔１０ｂの上下両側に対称的に配置され、
スライダ１０の上下縁の手前で終っている。This embodiment uses the slider 1 in the device E3 of the third embodiment.
A recess 11 is provided on the surface 10a in contact with the groove 16, and the recess 11 is provided on the tappet pin 2 of the slider 10.
symmetrically arranged on both upper and lower sides of the fitting hole 10b,
It ends before the upper and lower edges of the slider 10.
装置Ｅ４においては潤滑油はりセス１１に蓄えられ、タ
ペット１の上下運動に関係なく潤滑油通路７．９がリセ
ス１１を介して常時連通するのでタペットピン２とタペ
ットローラ３との遊嵌部に常時潤滑油を供給することが
できる。In device E4, lubricating oil is stored in recess 11, and the lubricating oil passage 7.9 is always in communication via recess 11 regardless of the vertical movement of tappet 1, so that lubricating oil is always connected to the loosely fitted portion between tappet pin 2 and tappet roller 3. Can supply lubricating oil.
第４図（イ）、（ロ）は２個の気筒５１．５２を有する
第５実施例の燃料噴射装置Ｅ５を示す。FIGS. 4(a) and 4(b) show a fuel injection device E5 of a fifth embodiment having two cylinders 51 and 52.
気筒５１．５２にそれぞれ１個のタペット１が配置され
、各タペット１はそれぞれカム６１．６２で駆動される
。潤滑油人口１２は２気筒５１．５２に共用され、各気
筒５１．５２のタペットピン２１．２２の潤滑油通路７
が潤滑油入口通路９と同時又は各々連通するように配置
されている。潤滑油入口１２に連通する潤滑油入口通路
９はＴ型になっている。両端の潤滑油入口通路９はプラ
グ１７により閉鎖されている。装置Ｅ５の作用は装置Ｅ
１の作用と同じである。One tappet 1 is arranged in each cylinder 51, 52, each tappet 1 being driven by a respective cam 61, 62. The lubricating oil population 12 is shared by two cylinders 51.52, and the lubricating oil passage 7 of the tappet pin 21.22 of each cylinder 51.52
are arranged so as to communicate with the lubricating oil inlet passage 9 simultaneously or with each other. The lubricating oil inlet passage 9 communicating with the lubricating oil inlet 12 is T-shaped. The lubricating oil inlet passages 9 at both ends are closed by plugs 17. The action of device E5 is device E
The effect is the same as 1.
第５図は６気筒の場合について気筒２個あてに１個のｆ
１１消油入口１２を設けた場合の第６実施例の装置Ｅ６
を示す。この場合にはすべての気筒又は潤滑油人口１２
を挟んだ両側のタペットピン２が連通可能な位置に並ぶ
ようにカムの形状が工夫され設定されている。装置Ｅ６
の作用は装置Ｅ５の作用と同じである。Figure 5 shows one f for two cylinders in the case of six cylinders.
11 Device E6 of the sixth embodiment when oil quenching inlet 12 is provided
shows. In this case, all cylinders or lubricant population 12
The shape of the cam is devised and set so that the tappet pins 2 on both sides of the cam are lined up in a position where they can communicate with each other. Device E6
The effect of is the same as that of device E5.
第６図は６気筒の場合について潤滑油人口１２の両側で
気筒群を気筒３個づつの２グループＢ、Ｃに分け、すべ
ての気筒又はグループＢ、Ｃ各々の気筒が連通可能の位
置に並ぶようにカムの形状を工夫した第７実施例Ｅ７を
示す。この場合には１個の潤滑油人口１２ですべての気
筒に潤滑油を供給し、タベツビン２とタペットローラ３
のＴ１嵌部に潤滑油を強制的に供給することが出来る。Figure 6 shows the case of 6 cylinders, where the cylinder group is divided into 2 groups B and C of 3 cylinders each on both sides of the lubricating oil population 12, and all cylinders or the cylinders of each group B and C are lined up in a position where they can communicate. A seventh embodiment E7 is shown in which the shape of the cam is devised as follows. In this case, lubricating oil is supplied to all cylinders with one lubricating oil population 12, and tappet roller 2 and tappet roller 3 are supplied with lubricating oil.
It is possible to forcibly supply lubricating oil to the T1 fitting part.
第７図は第２実施例において潤滑油通路８を複ｒ＆個（
図では２個）設け、開口８ａを複数とした第８実施例Ｅ
８を示す。潤滑油通路８が複数になったのでタペットピ
ン２とタペットローラ３との遊嵌部における潤滑は第２
実施例より優れている。FIG. 7 shows the number of lubricating oil passages 8 in the second embodiment.
Eighth embodiment E in which a plurality of openings 8a are provided (two in the figure) and a plurality of openings 8a
8 is shown. Since there are a plurality of lubricating oil passages 8, lubrication at the loosely fitted portion between the tappet pin 2 and the tappet roller 3 is performed by the second lubricating oil passage 8.
Better than the example.
他の機構は第２実施例Ｅ２と同じであるので説明を省く
。The other mechanisms are the same as those in the second embodiment E2, so their explanation will be omitted.
［効果］
この発明は上記の構成を有するので次のような優れた効
果を有する。[Effects] Since the present invention has the above configuration, it has the following excellent effects.
（イ）プランジャ駆動部に潤滑油を強制的にに供給する
ことができるのでタペットピンとタペットローラとの遊
嵌部に焼き付きが発生しない。従って装置の耐久性が向
上する。(a) Since lubricating oil can be forcibly supplied to the plunger drive section, seizing does not occur at the loosely fitted portion between the tappet pin and the tappet roller. Therefore, the durability of the device is improved.
（ロ）一つの潤滑油入口で複数の気筒に対する潤滑油の
供給が可能になるので構造がコンパクトになり、コスト
を低下させる。(b) Since one lubricating oil inlet can supply lubricating oil to multiple cylinders, the structure becomes compact and costs are reduced.
（ハ）機構が極めて簡素であるので製作が容易であり、
既存の燃料供給装置の改修も可能である。(c) The mechanism is extremely simple, making it easy to manufacture.
It is also possible to retrofit existing fuel supply systems.
第１図は第１実施例の要部の縦断正面図を示す。
第２図は第２実施例の要部の縦断正面図を示す。
第３図（イ）は第３実施例の要部の縦断正面図を示し、
第３図（ロ）は第３図（イ）のＡ−Ａ線断面図を示す。
第３図（ハ）は第４実施例の要部の正面図、側面図を示
す。第４図（イ）は第５実施例の要部の縦断正面図を示
し、第４図（ロ）は第４図（イ）のＡ−Ａ線断面図を示
す。第５図は第６実施例の平面図を示す。第６図は第７
実施例の平面図を示す。第７図は第８実施例の要部の縦
断正面図を示す。
２・・・タペットビン
３・・・タペットローラ
７・・・潤滑油通路
９・・・潤滑油入口通路
５ｂ・・・気筒壁面（ｉｌ（ｌ滑油強制流出機構）７ｂ
・・・閉鎖端部（Ｉｆｆｌ滑油強制流出機構）１０・・
・スライダ（潤滑油強制流出機構）９・・・潤滑油入口
通路
代理人 弁理士 定立 勉（ほか２名）第１図FIG. 1 shows a longitudinal sectional front view of the main parts of the first embodiment. FIG. 2 shows a longitudinal sectional front view of the main parts of the second embodiment. FIG. 3(a) shows a longitudinal sectional front view of the main parts of the third embodiment,
FIG. 3(b) shows a sectional view taken along the line A--A in FIG. 3(a). FIG. 3(C) shows a front view and a side view of the main parts of the fourth embodiment. FIG. 4(a) shows a longitudinal sectional front view of the main part of the fifth embodiment, and FIG. 4(b) shows a sectional view taken along the line A--A in FIG. 4(a). FIG. 5 shows a plan view of the sixth embodiment. Figure 6 is the 7th
A plan view of an example is shown. FIG. 7 shows a longitudinal sectional front view of the main parts of the eighth embodiment. 2... Tappet bin 3... Tappet roller 7... Lubricating oil passage 9... Lubricating oil inlet passage 5b... Cylinder wall surface (il (l lubricating oil forced outflow mechanism) 7b
...Closed end (Iffl oil forced outflow mechanism) 10...
・Slider (lubricating oil forced outflow mechanism) 9... Lubricating oil inlet passage representative Patent attorney Tsutomu Sadachi (and 2 others) Figure 1
Claims (1)
み、タペットローラと遊嵌する部位においてタペットピ
ンの表面に開口する潤滑油通路をタペットピンに備え、
この潤滑油通路に常時又は断続的に連通する潤滑油入口
通路を備え、この潤滑油入口通路から前記潤滑油通路に
供給された潤滑油を前記開口から強制的に流出させる機
構を備えたことを特徴とする内燃機関の燃料噴射装置。The tappet pin includes a tappet pin and a tappet roller that is loosely fitted therein, and the tappet pin is provided with a lubricating oil passage that opens on the surface of the tappet pin at a portion that loosely fits the tappet roller;
A lubricating oil inlet passage that communicates with the lubricating oil passage constantly or intermittently is provided, and a mechanism is provided for forcing the lubricating oil supplied from the lubricating oil inlet passage to the lubricating oil passage to flow out from the opening. Features of fuel injection device for internal combustion engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1035736A JPH02215966A (en) | 1989-02-15 | 1989-02-15 | Fuel injection system for internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1035736A JPH02215966A (en) | 1989-02-15 | 1989-02-15 | Fuel injection system for internal combustion engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02215966A true JPH02215966A (en) | 1990-08-28 |
Family
ID=12450112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1035736A Pending JPH02215966A (en) | 1989-02-15 | 1989-02-15 | Fuel injection system for internal combustion engine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02215966A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015158994A1 (en) * | 2014-04-18 | 2015-10-22 | Renault S.A.S | Fuel injection pump having a component for blocking rotation and lubricating the plunger |
| EP3032089A1 (en) * | 2014-12-12 | 2016-06-15 | Continental Automotive GmbH | Roller tappet arrangement of a high pressure fuel pump, arrangement of a high pressure fuel pump and an engine block of a combustion engine and engine box of a combustion engine |
| DE102015117364A1 (en) | 2015-01-29 | 2016-08-04 | Denso Corporation | Component equipped with an actuator |
| GB2617853A (en) * | 2022-04-21 | 2023-10-25 | Delphi Tech Ip Ltd | Drive assembly for a fuel pump with roller tappet |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718760B2 (en) * | 1975-12-11 | 1982-04-19 |
-
1989
- 1989-02-15 JP JP1035736A patent/JPH02215966A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5718760B2 (en) * | 1975-12-11 | 1982-04-19 |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015158994A1 (en) * | 2014-04-18 | 2015-10-22 | Renault S.A.S | Fuel injection pump having a component for blocking rotation and lubricating the plunger |
| FR3020095A1 (en) * | 2014-04-18 | 2015-10-23 | Renault Sas | FUEL INJECTION PUMP WITH ROTATION BLOCKING PIECE AND PUSH LUBRICATION |
| EP3032089A1 (en) * | 2014-12-12 | 2016-06-15 | Continental Automotive GmbH | Roller tappet arrangement of a high pressure fuel pump, arrangement of a high pressure fuel pump and an engine block of a combustion engine and engine box of a combustion engine |
| DE102015117364A1 (en) | 2015-01-29 | 2016-08-04 | Denso Corporation | Component equipped with an actuator |
| US9951734B2 (en) | 2015-01-29 | 2018-04-24 | Denso Corporation | Actuator equipped component |
| GB2617853A (en) * | 2022-04-21 | 2023-10-25 | Delphi Tech Ip Ltd | Drive assembly for a fuel pump with roller tappet |
| WO2023203199A1 (en) * | 2022-04-21 | 2023-10-26 | Delphi Technologies Ip Limited | Drive assembly for a fuel pump with roller tappet |
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