JPS62195421A - Fuel injection pump for internal combustion engine - Google Patents
Fuel injection pump for internal combustion engineInfo
- Publication number
- JPS62195421A JPS62195421A JP62006304A JP630487A JPS62195421A JP S62195421 A JPS62195421 A JP S62195421A JP 62006304 A JP62006304 A JP 62006304A JP 630487 A JP630487 A JP 630487A JP S62195421 A JPS62195421 A JP S62195421A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- control
- chamber
- fuel injection
- 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.)
- Pending
Links
- 239000000446 fuel Substances 0.000 title claims description 34
- 238000002347 injection Methods 0.000 title claims description 27
- 239000007924 injection Substances 0.000 title claims description 27
- 238000002485 combustion reaction Methods 0.000 title claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000002828 fuel tank Substances 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
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
- F02D1/12—Transmission of control impulse to pump control, e.g. with power drive or power assistance non-mechanical, e.g. hydraulic
-
- 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
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
- F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
- F02M41/125—Variably-timed valves controlling fuel passages
- F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、圧力下で燃料を受容する吸込室と、該吸込室
から燃料を供給されて、燃料噴射量を調量するために往
復動するプランジャーストンを有するポンプユニットと
、該ポンプユニットと協働する送出し量調節装置と、該
送出し量調節装置を操作する油圧調節装置とを有してお
り、該油圧調節装置が、閉じた調節シリンダ内に可動の
調節ピストン（３１）を有しており、該調節ピストンの
一面が制御圧室を、他面が基準圧室を閉鎖し、又、前記
調節ピストンが前記制御圧室内の制御圧に応じた位置を
占めるようになっており、さらに、前記制御圧室を前記
吸込室と連絡する絞りと、前記制御圧室内の制御圧を調
節すると共に前記制御圧室及び放圧側と連通される圧力
制御弁とを有している内燃機関用の燃料噴射ポンプに関
する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a suction chamber that receives fuel under pressure, and a reciprocating plan that is supplied with fuel from the suction chamber and moves back and forth in order to meter the amount of fuel to be injected. The pump unit has a pump unit having a pump unit, a delivery volume adjustment device cooperating with the pump unit, and a hydraulic adjustment device for operating the delivery volume adjustment device, the hydraulic adjustment device having a closed regulation. The cylinder has a movable adjusting piston (31), one side of the adjusting piston closes a control pressure chamber and the other side closes a reference pressure chamber, and the adjusting piston closes a control pressure chamber in the control pressure chamber. and a throttle that communicates the control pressure chamber with the suction chamber, and a throttle that adjusts the control pressure in the control pressure chamber and communicates with the control pressure chamber and the pressure relief side. The present invention relates to a fuel injection pump for an internal combustion engine having a pressure control valve.
従来の技術
内燃機関の所望のトルクに適合した送出し量又は噴射量
を調量し、送シ出すために、燃料噴射ポンプと協働する
送出し量調節装置を使用することは既に公知である。特
公昭筒５４−１０８３０号明細書から公知の燃料噴射ポ
ンプは、送出し量調節装置を操作するために油圧調節装
置を有しており、この油圧調節装置では、調節ピストン
に作用し、この調節ピストンの位置を決定する制御圧が
円錐形の閉鎖部材を有するシート弁を介して制御される
。BACKGROUND OF THE INVENTION In order to meter and deliver a delivery or injection quantity that is adapted to the desired torque of an internal combustion engine, it is already known to use a delivery adjustment device that cooperates with a fuel injection pump. . The fuel injection pump known from Japanese Patent Publication No. 54-10830 has a hydraulic regulator for actuating a delivery volume regulator, which hydraulic regulator acts on a regulating piston and controls this regulation. The control pressure that determines the position of the piston is controlled via a seat valve with a conical closure.
発明が解決しようとする問題点
前記形式の公知の圧力制御弁は、操作部材が所定の位置
にある場合には、制御圧が所定の範囲でばらつくという
欠点を有する。このため、この公知の圧力制御弁では内
燃機関に、常に所望のトルクに相応する送出し量を供給
できるとは限らない。Problem to be Solved by the Invention Known pressure control valves of the type described above have the disadvantage that the control pressure varies within a certain range when the actuating member is in a certain position. Therefore, with this known pressure control valve, it is not always possible to supply the internal combustion engine with a delivery quantity that corresponds to the desired torque.
問題点を解決するだめの手段
前述の問題点を解決するために本発明では、圧力制御弁
が、供給ノズル及び変位可能なそらせ板を有していて補
助力によって制御されるそらせ板弁として構成されてお
り、前記供給ノズルが制御圧室と連通しており、又、補
助力に応じて変位可能な前記そらせ板が、調節ピストン
に作用する、前記制御圧室内の制御圧を調節するように
した。Means for Solving the Problems To solve the aforementioned problems, the present invention provides that the pressure control valve is configured as a baffle valve having a supply nozzle and a displaceable baffle plate and controlled by an auxiliary force. the supply nozzle communicates with a control pressure chamber, and the baffle plate, which is displaceable in response to an auxiliary force, adjusts the control pressure in the control pressure chamber acting on the adjustment piston. did.
発明の効果
本発明により得られる効果は、所定の調節値に応じて正
確かつ減少可能な制御圧が調節され、この制御圧がまた
、制御圧に応じてなされた調節に作用を及ぼすので、内
燃機関がその都度精確に必要なだけの噴射量を得られる
ということである。Effects of the Invention The advantage achieved by the invention is that a precise and reducible control pressure is regulated as a function of a predetermined control value, and this control pressure also acts on the adjustment made in dependence on the control pressure, so that the internal combustion This means that the engine can obtain exactly the amount of injection required each time.
実施態様
特許請求の範囲第２項以下に記載の方法によれば、本発
明の燃料噴射ポンプの有利な実施態様が可能である。特
に有利な１実施態様によれば、制御圧室と向かい合う基
準室内の圧力が低いので、調節ピストンを調節するだめ
の制御圧が少なくて済む上、この制御圧は、そらせ板弁
によって特に精密に、又、少ない補助力で調節できる。Embodiments Advantageous embodiments of the fuel injection pump according to the invention are possible according to the method described in the following claims. According to one particularly advantageous embodiment, the pressure in the reference chamber facing the control pressure chamber is low, so that less control pressure is required for adjusting the adjusting piston, and this control pressure can be made particularly precisely by means of a baffle valve. Also, it can be adjusted with a small amount of auxiliary force.
実施例
図示の分配型燃料噴射ポンプでは、ケーシング１０が吸
込室１１を取シ囲んでおり、該吸込室１１がフィーＰポ
ンプ１２によって燃料タンク１３から燃料を供給される
。吸込室１１の圧力を調節するために、圧力制御弁１４
が前記フィーＰポンプ１２・に平行に接続されており、
この圧力制御弁１４は、燃料噴射ポンプから燃料を供給
される内燃機関の所定の回転数から吸込室１１内の圧力
を所定の値、たとえば８・ζ−ルに一定に保つ。送出し
量又は噴射量を調量するために、回動と同時に往復動す
るように、駆動されるプランツヤピストン１５が使用さ
れ、該プランジャピストン１５はポンプ作業室１６を閉
鎖する。ポンプ作業室１６は、プランジャピストン１５
の吸込行程時に吸込導管１７とプランツヤピストン１５
の吸込溝１８とを介して吸込室１１から燃料を充てんさ
れる。引き続くプランジャピストン１５の送出し行程時
には吸込導管１７が閉鎖されて、噴射量はプランツヤピ
ストン１５の、縦孔２０及び該縦孔２０と連通する送出
し溝２１と、送出し導管２２とを介して内燃機関のシリ
ンダ近傍の、詳しくは図示されていない燃料噴射ノズル
に圧送される。In the illustrated distribution type fuel injection pump, a casing 10 surrounds a suction chamber 11, which is supplied with fuel from a fuel tank 13 by a feed P pump 12. A pressure control valve 14 is used to adjust the pressure in the suction chamber 11.
is connected in parallel to the fee P pump 12,
The pressure control valve 14 keeps the pressure in the suction chamber 11 constant at a predetermined value, for example, 8.zeta.-r, from a predetermined rotational speed of the internal combustion engine supplied with fuel from the fuel injection pump. In order to meter the delivery or injection quantity, a plunger piston 15 is used which is driven so as to rotate and reciprocate at the same time, which closes off the pump work chamber 16 . The pump working chamber 16 has a plunger piston 15
During the suction stroke, the suction conduit 17 and the planter piston 15
The fuel is filled from the suction chamber 11 through the suction groove 18 of the suction chamber 11 . During the subsequent delivery stroke of the plunger piston 15, the suction conduit 17 is closed, and the injection quantity is transmitted via the vertical hole 20 of the plunger piston 15, the delivery groove 21 communicating with the vertical hole 20, and the delivery conduit 22. The fuel is then pumped to a fuel injection nozzle (not shown in detail) near the cylinder of the internal combustion engine.
プランジャピスト／１５の行程とは無関係に変化される
燃料噴射量を調量するために、燃料噴射ポンプは送出し
量調節装置２５を有している。吸込室１１内に設けられ
ている送出し量調節装置２５は、同じく吸込室１１内の
プランジャピストン１５上を移動せしめられるスピルリ
ング２６を有しており、該スピルリング２６は、プラン
ジャピストン１５の送出し行程時に、プランジャピスト
ン１５の縦孔２０と連通する横孔２７を開閉制御する。In order to meter the fuel injection quantity, which is varied independently of the stroke of the plunger piston 15, the fuel injection pump has a delivery quantity adjustment device 25. The delivery amount adjusting device 25 provided in the suction chamber 11 has a spill ring 26 which is also movable on the plunger piston 15 in the suction chamber 11 . During the delivery stroke, the horizontal hole 27 communicating with the vertical hole 20 of the plunger piston 15 is controlled to open and close.
つまり、スピルリング２６は、プランツヤピストン１５
の変化する位置に応じたその位置に従って横孔２７を開
放する。また、スピルリング２６の位置は、旋回可能な
２腕型の制御し・々−２８によって調節され、該制御レ
ノ々−２８は、スピルリング２６の溝２９に係合してい
る。In other words, the spill ring 26
The horizontal hole 27 is opened in accordance with the changing position of the lateral hole 27. The position of the spill ring 26 is also adjusted by pivotable two-armed control levers 28 which engage grooves 29 in the spill ring 26.
送出し量調節装置２５を操作するだめに、調節シリンダ
３２内に調節ピスト／３１を有する油圧調節装置３０が
設けられている。調節ピストン３１の、制御圧室３３を
閉鎖する右側面と基準圧室３４を閉鎖する左側面の両側
面にはそれぞれ、調節゛シリンダ３２の両側壁を貫通す
るロッド３５．３６が設けられている。この両ロツｒ３
５．ｓａの横断面は等しいので、調節ピストン３１は圧
力を補償されかつｌステリシスなく働く。制御圧室３３
を貫通するロツＰ３５の面取部には、送出し量調節装置
２５の制御レノ々−２８がばね３８に押圧されて当接し
ておシ、該ばね３８は、制御レ−：−２ｅ、を貫通する
延長部３７上に載置されている。ロッド３５の、吸込室
１１内に突入する端部に載着され、又、一方を調節シリ
ンダ３２に、他方をピストン棒３５のつげ４１に支持さ
れている制御ばね４０は、調節ピストン３１を制御圧室
３３の方向に引っばる。油圧調節装置３０の制御圧室３
３は絞り４４を有する開口部４３を介して吸込室１１と
連通しておシ、該開口部４３を介して燃料を供給される
。油圧調節装置３０の制御圧室３３内の圧力は、制御ば
ね４０の押圧力との関係で調節ピストン３１の位置を決
定し、調節ピストン３１の位置は、送出し量調節装置２
５を介して噴射量の調量を決定する。前述の制御圧は、
そらせ板弁として構成された圧力制御弁によって制御さ
れる。油圧調節装置３０に支承されているそらせ板弁５
０（ｒイツ連邦共和国特許出願公開第３１０９５６０号
明細書から公知）は、ケーシング５１内に軸５３を中心
として旋回可能なそらせ板５２を有している。このそら
せ板５２の右側端部の方へと、下側から供給ノズル５５
が向けられておシ、該供給ノズル５５は、供給開口部５
６を介して油圧調節装置３０の制御圧室３３と連通して
いる。そらせ板５２の左側の端部では、圧縮ばね５７が
上からそらせ板５２を押圧している。そらせ板弁５０の
、無圧に保たれている内室５４は、排出管５８を通って
燃料タンク１３と連通している。In order to actuate the delivery amount adjusting device 25, a hydraulic adjusting device 30 is provided which has an adjusting piston/31 in an adjusting cylinder 32. Rods 35 and 36 passing through both side walls of the adjustment cylinder 32 are provided on both sides of the adjustment piston 31, the right side that closes the control pressure chamber 33 and the left side that closes the reference pressure chamber 34, respectively. . This bothrotsu r3
5. Since the cross sections of sa are equal, the adjusting piston 31 is pressure-compensated and works without l-steresis. Control pressure chamber 33
The control rails 28 of the delivery amount adjusting device 25 are pressed by a spring 38 and come into contact with the chamfered portion of the rod P35 that passes through the shaft. It rests on a penetrating extension 37. A control spring 40 , which rests on the end of the rod 35 projecting into the suction chamber 11 and is supported on the one hand in the regulating cylinder 32 and on the other hand in the barb 41 of the piston rod 35 , controls the regulating piston 31 . It is pulled in the direction of the pressure chamber 33. Control pressure chamber 3 of hydraulic adjustment device 30
3 communicates with the suction chamber 11 through an opening 43 having a throttle 44, and is supplied with fuel through the opening 43. The pressure in the control pressure chamber 33 of the hydraulic adjustment device 30 determines the position of the adjustment piston 31 in relation to the pressing force of the control spring 40, and the position of the adjustment piston 31 is determined by the pressure in the control pressure chamber 33 of the hydraulic adjustment device 30.
5 determines the metering of the injection quantity. The aforementioned control pressure is
It is controlled by a pressure control valve configured as a baffle plate valve. baffle plate valve 5 supported on hydraulic regulator 30;
0 (known from German Patent Application No. 3,109,560) has a baffle plate 52 in a casing 51 which is pivotable about an axis 53. The supply nozzle 55 is inserted from the bottom toward the right end of the baffle plate 52.
When the supply nozzle 55 is directed toward the supply opening 5
6, it communicates with a control pressure chamber 33 of the hydraulic adjustment device 30. At the left end of the baffle plate 52, a compression spring 57 presses against the baffle plate 52 from above. The pressure-free interior chamber 54 of the baffle valve 50 communicates with the fuel tank 13 through a discharge pipe 58 .
そらせ板弁５０は、永久磁石６０を有しており、該永久
磁石６０は、ヨーク６９）．６２を介して、旋回可能な
そらせ板５２と結合されている可動子６３に作用する。The baffle plate valve 50 has a permanent magnet 60, which is connected to a yoke 69). Via 62 it acts on an armature 63 which is connected to the pivotable baffle plate 52.
この可動子６３は、コイル６４によって取り囲まれてお
り、該コイル６４は、電子制御装置６５によって制御さ
れており、しかも燃料流通部分の外に設けられているの
で、有利には燃料にさらされない。そらせ板５２は、た
とえば回転数、温度、周辺圧などの種々異なる運転パラ
メータ及び希望トルクに応じて電子制御装置６５によっ
て制御される、コイル６４の磁界の大きさに従って程度
の差をもたせながら、供給ノズル５５の開口部を開放す
る。このため、供給ノズル５５と、吸込室１１から制御
圧室３３に通じる絞り４４との複合絞り作用によって、
制御圧室３３内に制御圧が形成され、この制御圧は、吸
込室１１の圧力よりも小さいが、排出管５８を介して無
圧に保たれている、そらせ板弁５０の内室５４内の圧力
よりも大きくなっている。絞り４４とそらせ板５２を有
する供給ノズル５５とは、制御圧室３３内の制御圧が運
転中に０・々−ルから約１．５ ノ：−ルまでに制御さ
れるように選択されると有利である。This armature 63 is surrounded by a coil 64, which is controlled by an electronic control unit 65 and is located outside the fuel flow area, so that it is advantageously not exposed to fuel. The baffle plate 52 is supplied to varying degrees according to the magnitude of the magnetic field of the coil 64, which is controlled by an electronic control unit 65 depending on different operating parameters such as, for example, rotational speed, temperature, ambient pressure, and the desired torque. Open the opening of the nozzle 55. Therefore, due to the combined throttling action of the supply nozzle 55 and the restrictor 44 communicating from the suction chamber 11 to the control pressure chamber 33,
A control pressure is created in the control pressure chamber 33 , which is lower than the pressure in the suction chamber 11 , but in the inner chamber 54 of the baffle valve 50 , which is kept pressure-free via the discharge pipe 58 . is greater than the pressure of The feed nozzle 55 with the restrictor 44 and the baffle plate 52 is selected such that the control pressure in the control pressure chamber 33 is controlled during operation from 0.0 mm to approximately 1.5 mm. It is advantageous.
孔６７を介してそらせ板弁５２の内室５４と連通してい
る無圧の基準圧室３４と、制御ばね４０と協働して、調
節ピストン３１は制御圧室３３内の制御圧に応じた位置
を占める。そらせ板弁５０が形成されていることに基づ
き、制御圧は電子制御装置６５からコイル６４に供給さ
れる制御電流に比例する。この場合に必要とされるエネ
ルギーは、他の電磁制御装置の場合と比較して極めて少
ない。調節ピストン３１の位置は．ポジシヨンセンサ、
たとえばポテンショメータ６８によって制御装置６５に
伝達される。In cooperation with the unpressurized reference pressure chamber 34 , which communicates with the interior chamber 54 of the baffle plate valve 52 via the bore 67 , and the control spring 40 , the adjusting piston 31 responds to the control pressure in the control pressure chamber 33 . occupy a position. Due to the design of the baffle plate valve 50, the control pressure is proportional to the control current supplied to the coil 64 by the electronic control device 65. The energy required in this case is extremely low compared to other electromagnetic control devices. The position of the adjusting piston 31 is. position sensor,
For example, it is transmitted to the control device 65 by a potentiometer 68.
また、ポジションセンナは、ロッｔ’ ３６ ト結合さ
れており、又、ケー／ング１ｏを貫通する延長部６９に
よって操作される。制御圧室３３と制御ばね４０とは、
吸込室１１が無圧である場合に、制御圧室３３もやはり
無圧であるので、制御ばね４０が調節ピストン３１を右
側へ押しやる、つまり、送出し量調節装置２５を送出し
量減少の方向に制御するように設計されている。The position sensor is also connected to the rod and is operated by an extension 69 passing through the housing 1o. The control pressure chamber 33 and the control spring 40 are
If the suction chamber 11 is unpressurized, the control pressure chamber 33 is also unpressurized, so that the control spring 40 pushes the adjusting piston 31 to the right, that is, moves the delivery amount adjusting device 25 in the direction of reducing the delivery amount. is designed to be controlled.
内燃機関を始動するために比較的多量の噴射量が必要で
あるが、吸込室１１内の圧力は、制御圧室３３内を高制
御圧が占めるようになる程高くないので、調節ピストン
３１及び該調節ピストンの、送出し量調節装置２５を操
作するロッド３５に軸方向に整合されて、始動ピストン
７ｏがケーシング１０のシリンダ７１内を圧縮ばね７２
によって移動せしめられる。この始動ピストン７０は、
吸込室１１が無圧である場合に、ロッド３５の延長部に
係合しながら圧縮ばねによって調節ピストン３１を左側
へ移動せしめる。後方の基準圧室７３は、導管７４を通
ってそらせ板弁５ｏの内室５４と連通しておシ、従って
やはり無圧になっている。Although a relatively large injection quantity is required to start the internal combustion engine, the pressure in the suction chamber 11 is not so high that a high control pressure occupies the control pressure chamber 33, so that the regulating piston 31 and The starting piston 7o is axially aligned with the rod 35 of the regulating piston, which operates the delivery rate regulating device 25, so that the starting piston 7o is moved within the cylinder 71 of the casing 10 by the compression spring 72.
It is moved by This starting piston 70 is
When the suction chamber 11 is free of pressure, the compression spring causes the adjustment piston 31 to move to the left while engaging the extension of the rod 35. The rear reference pressure chamber 73 communicates with the interior chamber 54 of the baffle valve 5o through a conduit 74 and is therefore also pressure-free.
図面は、本発明の分配型燃料噴射ポンプを断面して示す
概略図である。
１０・・・ケーシング、１１・・・吸込室、１２・・・
フィードポンプ、１３・・・燃料タンク、１４・・・圧
力制御弁、１５・・・プランジャピストン、１６・・・
ポンプ作業室、１７・・・吸込導管、１８・・・制御溝
、２ｏ・・・縦孔、２１・・・送出し溝、２２・・・送
出し導管、２５・・・送出し量調節装置、２６・・・ス
ピルリング、２７・・・横孔、２８・・・制御し・ζ−
１２９・・・溝、３０・・・油圧調節装置、３１・・・
調節ピストン、３２・・調節シリンダ、３３・・・制御
圧室、３４・・・基準圧室、３５・・・ロッＰ、３６・
・・ロッド、３７・・・延長部、３８・・・ばね、４０
・・・制御ばね、４１・・つば、４３・・・開口部、４
４・・・絞り、５０・・・そらせ板弁、５１・・・そら
せ板弁のケーシング、５２・・・そらせ板、５３・・・
軸、５４・・・内室、５５・・・供給ノズル、５６・・
・供給開口部、５７・・・圧縮ばね、５８・・・排出管
、６０・・・永久磁石、６９）．６２・・・ヨーク、６
３・・・可動子、６４・・・コイル、６５・・・電子制
御装置、６７・・・孔、６８・・・ポテンショメータ、
６９・・・延長部、７０・・・始動ピストン、７１・・
・シリンダ、７２・・・圧縮ばね、７３・・・基準圧室
、７＋・・・導管。
１１・・・吸込室
３１・・調節ピストン
３３・・制御圧室
５０・・・そらせ板弁The drawing is a schematic cross-sectional view of the distribution type fuel injection pump of the present invention. 10...Casing, 11...Suction chamber, 12...
Feed pump, 13...Fuel tank, 14...Pressure control valve, 15...Plunger piston, 16...
Pump work chamber, 17... Suction conduit, 18... Control groove, 2o... Vertical hole, 21... Delivery groove, 22... Delivery conduit, 25... Delivery amount adjustment device , 26... Spill ring, 27... Horizontal hole, 28... Controlling ζ-
129...Groove, 30...Hydraulic pressure adjustment device, 31...
Adjustment piston, 32... Adjustment cylinder, 33... Control pressure chamber, 34... Reference pressure chamber, 35... Rod P, 36...
...Rod, 37...Extension part, 38...Spring, 40
...Control spring, 41...Brim, 43...Opening, 4
4... Throttle, 50... Deflector plate valve, 51... Casing of baffle plate valve, 52... Deflector plate, 53...
Shaft, 54... Inner chamber, 55... Supply nozzle, 56...
- Supply opening, 57... Compression spring, 58... Discharge pipe, 60... Permanent magnet, 69). 62... York, 6
3... Mover, 64... Coil, 65... Electronic control device, 67... Hole, 68... Potentiometer,
69...Extension part, 70...Starting piston, 71...
- Cylinder, 72... Compression spring, 73... Reference pressure chamber, 7+... Conduit. 11... Suction chamber 31... Adjustment piston 33... Control pressure chamber 50... Deflection plate valve
Claims (7)
下で燃料を受容する吸込室（１１）と、該吸込室（１１
）から燃料を供給されて、燃料送出し量を調量するため
に往復動するプランジヤピストン（１５）を有するポン
プユニツトと、該ポンプユニツトと協働する送出し量調
節装置（２５）と、該送出し量調節装置（２５）を操作
する油圧調節装置（３０）とを有しており、該油圧調節
装置が閉じた調節シリンダ（３２）内に可動の調節ピス
トン（３１）を有しており、該調節ピストン（３１）の
一面が制御圧室（３３）を、他面が基準圧室（３４）を
閉鎖しかつ該調節ピストン（３１）が前記制御圧室（３
３）内の制御圧に応じた位置を占めるようになつており
、さらに、前記制御圧室を前記吸込室と連絡する絞り（
４４）と、前記制御圧室（３３）内の制御圧を調節する
と共に前記制御圧室及び放圧側と連通される圧力制御弁
（５０）を有している形式のものにおいて、前記圧力制
御弁が、供給ノズル（５５）及び変位可能なそらせ板（
５２）を有していて補助力によつて制御されるそらせ板
弁（５０）として構成されており、前記供給ノズル（５
５）が前記制御圧室（３３）と連通しており、さらに補
助力に応じて変位可能なそらせ板（５２）が、前記調節
ピストン（３１）に作用する、前記制御圧室（３３）内
の制御圧を調節することを特徴とする内燃機関用の燃料
噴射ポンプ。1. A fuel injection pump for an internal combustion engine, comprising a suction chamber (11) for receiving fuel under pressure;
); a pump unit having a plunger piston (15) that reciprocates to meter the amount of fuel delivered; a delivery amount adjusting device (25) cooperating with the pump unit; a hydraulic regulator (30) for operating the delivery rate regulator (25), which hydraulic regulator has a movable regulating piston (31) in a closed regulating cylinder (32); , one side of the adjusting piston (31) closes the control pressure chamber (33) and the other side closes the reference pressure chamber (34), and the adjusting piston (31) closes the control pressure chamber (33).
3), which occupies a position corresponding to the control pressure in the suction chamber, and further includes a diaphragm (
44), and a pressure control valve (50) that adjusts the control pressure in the control pressure chamber (33) and communicates with the control pressure chamber and the pressure relief side, wherein the pressure control valve includes a supply nozzle (55) and a displaceable deflector plate (
configured as a baffle plate valve (50) having a supply nozzle (52) and controlled by an auxiliary force;
5) communicates with the control pressure chamber (33), and further a deflector plate (52) displaceable according to an auxiliary force acts on the control piston (31). A fuel injection pump for an internal combustion engine, characterized in that the control pressure of the fuel is adjusted.
３３）と向かい合う前記基準圧室（３３）が、前記放圧
側と連絡しており、該放圧側では前記吸込室（１１）と
対比して低減された圧力が働いている特許請求の範囲第
１項記載の燃料噴射ポンプ。2. The control pressure chamber (
Claim 1, wherein the reference pressure chamber (33) facing the auxiliary pressure chamber (33) communicates with the pressure relief side, and a reduced pressure acts on the pressure relief side compared to the suction chamber (11). Fuel injection pump as described in section.
前記供給ノズル（５５）の絞り作用とによつて得られる
複合絞り作用によつて、前記制御圧室（３３）内の圧力
が調節せしめられ、該圧力が前記吸込室（１１）内の圧
力よりも小で、前記基準室内の圧力よりも大である特許
請求の範囲第２項記載の燃料噴射ポンプ。3. The pressure in the control pressure chamber (33) is adjusted by a combined throttling action obtained by the throttling (44) and the throttling action of the baffle plate (52) and the supply nozzle (55). 3. The fuel injection pump according to claim 2, wherein the pressure is smaller than the pressure in the suction chamber (11) and larger than the pressure in the reference chamber.
）に作用するばね部材（４０）が設けられている特許請
求の範囲第３項記載の燃料噴射ポンプ。4. The adjusting piston (31) resists the action of the control pressure.
4. The fuel injection pump according to claim 3, further comprising a spring member (40) acting on the fuel injection pump.
をばね（７２）によつて負荷される始動ピストン（７０
）が設けられており、該始動ピストン（７０）が、前記
吸込室（１１）の圧力が無圧又は所定値を下回る場合に
は、前記調節ピストン（３１）に働くばね部材（４０）
に抗して前記送出し量調節装置（２５）を送出し量増加
の方向へと押圧する特許請求の範囲第４項記載の燃料噴
射装置。5. The starting piston (70) is loaded on one side by the pressure in said suction chamber (11) and on the other side by a spring (72).
), the starting piston (70) is provided with a spring member (40) acting on the adjusting piston (31) when the pressure in the suction chamber (11) is at no pressure or below a predetermined value.
5. The fuel injection device according to claim 4, wherein the delivery amount adjusting device (25) is pressed in the direction of increasing the delivery amount against the pressure.
、電磁回路の可動子（６３）と結合されており該可動子
（６３）が、電子制御 装置（６５）によつて制御され、該電子制御装置（６５
）が、内燃機関の、混合気形成を決定する運転パラメー
タの影響を受ける特許請求の範囲第１項から第５項まで
のいずれか１項に記載の燃料噴射装置。6. The baffle plate (52) of the baffle plate valve (50) is coupled to a movable element (63) of an electromagnetic circuit, and the movable element (63) is controlled by an electronic control device (65). Electronic control device (65
6. The fuel injection device according to claim 1, wherein the fuel injection device (1) is influenced by operating parameters of the internal combustion engine which determine the mixture formation.
トン（３１）と接続されており、該ポジシヨンセンサ（
６８，６９）が、前記調節ピストン（３１）の位置を伝
達するために前記電子制御装置（６５）と接続されてい
る特許請求の範囲第６項記載の燃料噴射ポンプ。7. A position sensor (68, 69) is connected to the adjusting piston (31), and the position sensor (68, 69) is connected to the adjusting piston (31).
7. Fuel injection pump according to claim 6, wherein the control pistons (68, 69) are connected to the electronic control device (65) for transmitting the position of the adjusting piston (31).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3601021.9 | 1986-01-16 | ||
| DE19863601021 DE3601021A1 (en) | 1986-01-16 | 1986-01-16 | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62195421A true JPS62195421A (en) | 1987-08-28 |
Family
ID=6291903
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62006304A Pending JPS62195421A (en) | 1986-01-16 | 1987-01-16 | Fuel injection pump for internal combustion engine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS62195421A (en) |
| DE (1) | DE3601021A1 (en) |
| FR (1) | FR2592919B1 (en) |
| GB (1) | GB2185598B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4126697A1 (en) * | 1991-08-13 | 1993-02-18 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINE |
| US5781246A (en) | 1993-09-09 | 1998-07-14 | Alten; Jerry | Electronic television program guide schedule system and method |
| US6418556B1 (en) | 1993-09-09 | 2002-07-09 | United Video Properties, Inc. | Electronic television program guide schedule system and method |
| GB2288475A (en) * | 1994-04-15 | 1995-10-18 | Rover Group | Fuel control system |
| US5940073A (en) | 1996-05-03 | 1999-08-17 | Starsight Telecast Inc. | Method and system for displaying other information in a TV program guide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173101A (en) * | 1984-02-15 | 1985-09-06 | 花王株式会社 | Disposable diaper |
| JPS60185806A (en) * | 1984-03-05 | 1985-09-21 | 大王製紙株式会社 | Front and back leak prevented paper diaper |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3713366A (en) * | 1971-03-24 | 1973-01-30 | Bendix Corp | Force balance lever mechanism |
| JPS5410830A (en) * | 1977-06-27 | 1979-01-26 | Mitsubishi Motors Corp | Fuel injection amount controller |
| DE3109560A1 (en) * | 1981-03-13 | 1982-09-30 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION SYSTEM |
| JPS58101230A (en) * | 1981-12-14 | 1983-06-16 | Toyota Motor Corp | Fuel injection pump control device of diesel engine |
| US4532893A (en) * | 1982-09-30 | 1985-08-06 | Cummins Engine Company, Inc. | Electronically controlled fuel pump |
-
1986
- 1986-01-16 DE DE19863601021 patent/DE3601021A1/en not_active Withdrawn
- 1986-11-21 FR FR8616227A patent/FR2592919B1/en not_active Expired - Lifetime
-
1987
- 1987-01-15 GB GB8700884A patent/GB2185598B/en not_active Expired
- 1987-01-16 JP JP62006304A patent/JPS62195421A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60173101A (en) * | 1984-02-15 | 1985-09-06 | 花王株式会社 | Disposable diaper |
| JPS60185806A (en) * | 1984-03-05 | 1985-09-21 | 大王製紙株式会社 | Front and back leak prevented paper diaper |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2592919B1 (en) | 1991-02-08 |
| GB2185598B (en) | 1989-11-01 |
| GB2185598A (en) | 1987-07-22 |
| FR2592919A1 (en) | 1987-07-17 |
| GB8700884D0 (en) | 1987-02-18 |
| DE3601021A1 (en) | 1987-07-23 |
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