JPS59126064A - Injecting amount regulating device for unit injector - Google Patents

Injecting amount regulating device for unit injector

Info

Publication number
JPS59126064A
JPS59126064A JP23399482A JP23399482A JPS59126064A JP S59126064 A JPS59126064 A JP S59126064A JP 23399482 A JP23399482 A JP 23399482A JP 23399482 A JP23399482 A JP 23399482A JP S59126064 A JPS59126064 A JP S59126064A
Authority
JP
Japan
Prior art keywords
injection plunger
pinion
unit injector
stepping motor
worm
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
Application number
JP23399482A
Other languages
Japanese (ja)
Inventor
Takayuki Suzuki
孝幸 鈴木
Makoto Endo
真 遠藤
Satoru Araino
哲 新井野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hino Motors Ltd
Original Assignee
Hino Motors Ltd
Hino Jidosha Kogyo KK
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hino Motors Ltd, Hino Jidosha Kogyo KK filed Critical Hino Motors Ltd
Priority to JP23399482A priority Critical patent/JPS59126064A/en
Publication of JPS59126064A publication Critical patent/JPS59126064A/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
    • F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
    • F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance

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

PURPOSE:To permit to regulate the injecting amount simply and surely with an electric mechanism by a method wherein the injection plunger is provided with a pinion and a worm, pivoted by a stepping motor, is engaged with the pinion. CONSTITUTION:When a follower 2 is knocked by a locker arm 5, the injection plunger 3 descends to inject fuel in a pump chamber 7 through a nozzle unit 4. In this case,the condition of an engine is being operated in a controller 13 at all times by trigger signal 14 and the output signal of the controller 13 is provided to the stepping motor 12. When a varying signal is provided to said motor 12, the pinion 10, provided in the injection plunger 3, is pivoted through the worm 11 connected to the motor 12. Then, the injection plunger 3 is rotated and the stroke of the injection plunger upon communicating the cut part 8 of the plunger with a feed port 6 may be varied. According to this method, the feeding amount of the ful in the pump chamber 7 may be regulated.

Description

【発明の詳細な説明】 本発明はユニットインジェクタの調量をステッピングモ
ータを使用して行う装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for metering a unit injector using a stepping motor.

ユニットインジェクタは応答性、エンジン回シのメンテ
ナンス性の向上など種々の利点があるので現在注目され
ている。Unit injectors are currently attracting attention because they have various advantages such as improved response and ease of maintenance of engine speeds.

ユニットインジェクタの難点の一つに燃料の調量がある
。ユニットインジェクタは各シリンダ毎に取〕付けられ
るので、複雑なリンク機構を介して調量を行っている。One of the difficulties with unit injectors is metering the fuel. Since a unit injector is attached to each cylinder, metering is performed via a complicated linkage mechanism.

このため、折角のエンジン回シのレイアウトの良好な面
が帳消しとなってしまう。For this reason, the good aspects of the engine rotation layout are canceled out.

本発明の目的は、電気的な機構を用いることによシ簡単
かつ軽量な機構で調量を行う装置を提供せんとするもの
である。SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for metering with a simple and lightweight mechanism using an electrical mechanism.

以下、図によって一実施例を説明する。Hereinafter, one embodiment will be described with reference to figures.

この実施例では、ユニットインジェクタ１はフォロワー
２、噴射グランジャ３、ノズル部４とからなシ、シリン
ダヘッドに挿入されている。In this embodiment, a unit injector 1 includes a follower 2, an injection granger 3, a nozzle part 4, and is inserted into a cylinder head.

フォロワー２はロッカーアーム５によシたたかれ、噴射
グランジャ３を上下動させる。噴射プランジャ３とフォ
ロワー２とは噴射プランジャ３が回動しうるように連結
されている。噴射プランジャ３の外周には燃料が供給さ
れるフィードポート６が肌目し、かつ端部に面してポン
プ室７が設けられ、噴射プランジャ３の外周には斜めに
切ったカット部分８が設けられている。The follower 2 is struck by the rocker arm 5, causing the injection granger 3 to move up and down. The injection plunger 3 and the follower 2 are connected so that the injection plunger 3 can rotate. A feed port 6 through which fuel is supplied is visible on the outer periphery of the injection plunger 3, and a pump chamber 7 is provided facing the end, and a diagonally cut portion 8 is provided on the outer periphery of the injection plunger 3. It is being

カット部分８には通口９が開口し、通口９は噴射プラン
ジャ３の端面に開口してポンプ室７と連絡する。A port 9 is opened in the cut portion 8 , and the port 9 is opened in the end face of the injection plunger 3 and communicates with the pump chamber 7 .

噴射プランジャ３にはピニオン１０が設けられ、ウオー
ム１１と係合している。ピニオン１０は噴射プランジャ
３の軸方向上下動を妨けないように構成されている。ウ
オーム１１はステッピングモータ１２と連結し、これに
よって回動される。ステッピングモータ１２はコントロ
ーラ１３からの作動信号を受けてウオーム１１を回動さ
せる。コントローラ１３へは各種のセンサからの信号が
付与されるが、例えばエンジン回転数Ｎ１アクセル状態
り、ＫＧＨのＯＮ又はＯＦＦ　、ブースト圧、冷却水温
などが与えられる。ζこでは、これらを総合してトリガ
ー信号１４とする。A pinion 10 is provided on the injection plunger 3 and engages with a worm 11. The pinion 10 is configured so as not to prevent the injection plunger 3 from moving up and down in the axial direction. The worm 11 is connected to a stepping motor 12 and rotated by this. The stepping motor 12 rotates the worm 11 in response to an activation signal from the controller 13 . The controller 13 is given signals from various sensors, such as the engine rotational speed N1, accelerator state, KGH ON or OFF, boost pressure, and cooling water temperature. ζHere, these are combined into a trigger signal 14.

上記の如く構成された本発明の作用は次のとおりである
。The operation of the present invention configured as described above is as follows.

ロッカーアーム５でフォロワー２をたたくと、噴射プラ
ンジャ３が下動する。すると、ポンプ室７内の燃料がノ
ズル部４の端部から噴射される。噴射用の燃料通路や針
弁などの作用は本発明の要旨ではなく、かつ公知機構で
あるから説明を省略する。When the rocker arm 5 hits the follower 2, the injection plunger 3 moves downward. Then, the fuel in the pump chamber 7 is injected from the end of the nozzle part 4. The functions of the injection fuel passage, needle valve, etc. are not the gist of the present invention and are known mechanisms, so a description thereof will be omitted.

噴射プランジャ３がさらに下降すると、フィードボート
６とカット部分８とが連絡し、ポンプ室７内が通口９、
カット部分８を介してフィードボート６に連通ずるため
、燃料噴射を停止する。When the injection plunger 3 further descends, the feed boat 6 and the cut portion 8 communicate with each other, and the inside of the pump chamber 7 opens into a passage 9,
Since it communicates with the feed boat 6 via the cut portion 8, fuel injection is stopped.

一方、エンジンの状態はトリガー信号１４によって常に
コントローラ１３で計算され、信号がステッピングモー
タ１２へ与えられている。On the other hand, the state of the engine is always calculated by the controller 13 using a trigger signal 14, and the signal is given to the stepping motor 12.

今、変更信号がステッピングモータ１２へ与、ｔられた
とすると、ウオーム１１を介してピニオン１０が回動す
る。すると、噴射プランジャ３が回転してカット部分８
とフィードボート６との連絡時の噴射プランジャのスト
ロークが異なる。Now, if a change signal is applied to the stepping motor 12, the pinion 10 rotates via the worm 11. Then, the injection plunger 3 rotates and the cut portion 8 is
and the stroke of the injection plunger when communicating with the feed boat 6 are different.

このため、ポンプ室７内の燃料の送シ出し量が調量され
る。For this reason, the amount of fuel delivered within the pump chamber 7 is measured.

以上のとおシ、本発明によると、簡単な構造によってユ
ニットインジェクタの調量を行いうるものである。As described above, according to the present invention, the unit injector can be metered with a simple structure.

【図面の簡単な説明】[Brief explanation of the drawing]

図は本発明の一実施例を示す略断面図である。 ３：噴射プランジャ、６：フィードボート、８：カット
部分、１０：ピニオン、１１：ウオーム、１２ニスチツ
ピングモータ、１３：コントローラ代理人　弁理士辻　
　　三　部The figure is a schematic cross-sectional view showing one embodiment of the present invention. 3: Injection plunger, 6: Feed boat, 8: Cut portion, 10: Pinion, 11: Worm, 12 Nippon tipping motor, 13: Controller representative Patent attorney Tsuji
Three parts

Claims (1)

【特許請求の範囲】[Claims] ユニットインジェクタの噴射プランジャをフォロワーに
回動自在に連結し、噴射プランジャ端部に面して設けら
れたポンプ室内に溜められた燃料をノズル端よシ噴射す
るユニットインジェクタであって、噴射プランジャの外
周に斜めにカットした部分を形成し、これと燃料が供給
されるフィードボートとの連絡位置を噴射プランジャを
回動させることによって可変としたユニットインジェク
タにおいて、噴射プランジャにピニオンを設け、ステッ
ピングモータによって回動されるウオームを前記ピニオ
ンに係合させ、該ステッピングモータをエンジン運転状
態を検知して信号を発するコント四−ラによシ制御する
ことを特徴とするユニットインジェクタの調量装置。A unit injector in which the injection plunger of the unit injector is rotatably connected to a follower, and fuel stored in a pump chamber provided facing the end of the injection plunger is injected from the nozzle end, the outer periphery of the injection plunger being rotatably connected to a follower. In a unit injector, the injection plunger is provided with a pinion, and the injection plunger is equipped with a pinion, which is rotated by a stepping motor. A metering device for a unit injector, characterized in that a worm to be moved is engaged with the pinion, and the stepping motor is controlled by a controller that detects an engine operating state and issues a signal.
JP23399482A 1982-12-31 1982-12-31 Injecting amount regulating device for unit injector Pending JPS59126064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP23399482A JPS59126064A (en) 1982-12-31 1982-12-31 Injecting amount regulating device for unit injector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP23399482A JPS59126064A (en) 1982-12-31 1982-12-31 Injecting amount regulating device for unit injector

Publications (1)

Publication Number Publication Date
JPS59126064A true JPS59126064A (en) 1984-07-20

Family

ID=16963877

Family Applications (1)

Application Number Title Priority Date Filing Date
JP23399482A Pending JPS59126064A (en) 1982-12-31 1982-12-31 Injecting amount regulating device for unit injector

Country Status (1)

Country Link
JP (1) JPS59126064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551390A (en) * 1993-11-05 1996-09-03 Honda Giken Kogyo Kabushiki Kaisha Fuel injection control system for internal combustion engines

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281425A (en) * 1975-12-24 1977-07-07 Bosch Gmbh Robert Pump nozzle for fuel injection device of internal combustion engine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5281425A (en) * 1975-12-24 1977-07-07 Bosch Gmbh Robert Pump nozzle for fuel injection device of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551390A (en) * 1993-11-05 1996-09-03 Honda Giken Kogyo Kabushiki Kaisha Fuel injection control system for internal combustion engines

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