JPH0580253B2 - - Google Patents
Info
- Publication number
- JPH0580253B2 JPH0580253B2 JP60173364A JP17336485A JPH0580253B2 JP H0580253 B2 JPH0580253 B2 JP H0580253B2 JP 60173364 A JP60173364 A JP 60173364A JP 17336485 A JP17336485 A JP 17336485A JP H0580253 B2 JPH0580253 B2 JP H0580253B2
- Authority
- JP
- Japan
- Prior art keywords
- outlet
- metering
- fuel
- inlet
- metering device
- 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 claims description 55
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 15
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000002828 fuel tank Substances 0.000 description 5
- 238000005086 pumping Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005429 filling process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001105 regulatory 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
- 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
-
- 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
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、液量を配量するための調量装置であ
つて、液体流入導管に接続可能な入口と、配量容
積に接続可能な出口と、配量過程中に入口および
出口を互いに接続する制御可能な１つの調量部材
とを備えている形式のものに関する。DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a metering device for metering liquid quantities, which comprises an inlet connectable to a liquid inlet conduit and an outlet connectable to a metering volume. , of the type with a controllable metering element connecting the inlet and the outlet to each other during the metering process.
従来の技術
燃料噴射ポンプ用のこの種の公知の調量装置は
２／２方向制御磁石弁、即ち２ポート２位置型方
向制御磁石弁として構成されている（ドイツ連邦
共和国特許出願公開第3318236号明細書）。燃料噴
射ポンプのポンプ作業室へ供給される燃料量の調
量はプラジヤの吸込又は充てん行程中に磁石弁の
制御可能な開放時間によつて調量横断面における
一定した圧力差でなされる。配量される燃料量は
燃料流入導管から取り出される。この燃料流入導
管は燃料噴射ポンプの燃料充てんされた吸込室か
ら磁石弁へ通じていて、この導管内で１つの圧力
制御弁を介して一定した液圧が維持される。配量
の開始前には方向制御弁前の燃料流入導管内の液
柱が静止しており、この場合比圧は例えば１バー
ルの値である。燃料配量開始と共に、要するに方
向制御弁の開放と共に、液柱の慣性に起因して調
量横断面における圧力が一次低下する。これによ
つて、配量時間と配量される燃料量との間の所期
の比例性が守られず、配量された噴射量に誤差が
生ずることとなる。A known metering device of this type for a fuel injection pump is constructed as a 2/2 directional magnet valve, i.e. a 2/2-way directional magnet valve (DE 33 18 236 A1). Specification). The quantity of fuel supplied to the pump working chamber of the fuel injection pump is metered with a constant pressure difference in the metering cross section by means of a controllable opening time of the magnet valve during the intake or filling stroke of the fuel injection pump. The metered quantity of fuel is removed from the fuel inlet conduit. This fuel inlet line leads from the fuel-filled suction chamber of the fuel injection pump to the magnet valve, in which a constant hydraulic pressure is maintained via a pressure control valve. Before the start of metering, the liquid column in the fuel inlet line in front of the directional control valve is stationary, the specific pressure being, for example, a value of 1 bar. With the start of fuel metering, i.e. with the opening of the directional control valve, the pressure in the metering cross section decreases to a degree due to the inertia of the liquid column. As a result, the desired proportionality between the dosing time and the dispensed fuel quantity is not maintained, leading to errors in the dispensed injection quantity.
発明が解決しようとする課題
本発明は、短かな配量時間においても液量の高
精度の調量を可能にすることである。Problem to be Solved by the Invention The object of the present invention is to enable highly accurate metering of liquid volume even in short metering times.
課題を解決するための手段
この課題を本発明は冒頭に述べた形式の調量装
置において次のようにして解決した。即ち、１つ
の流出部を設け、この流出部が配量過程以外の時
は常に、液体流入導管に接続可能の入口に接続さ
れているようにしたのである。この場合、配量過
程では、流出部を介して常に流れていた流体粒
が、配量領域に接続可能な出口へ向けられること
になる。Means for Solving the Problem This problem has been solved by the invention in the following manner in a metering device of the type mentioned at the outset. In other words, an outlet is provided which is connected to an inlet which can be connected to a liquid inlet conduit at all times other than during dosing processes. In this case, during the dosing process, the fluid droplets that were constantly flowing through the outlet are directed to an outlet that can be connected to the dosing area.
発明の効果
このような本発明の調量装置は、公知例の場合
と異なつて、短かな配量時間においても液量を高
精度に調量することができるという利点を有す
る。調量時間以外においても調量装置への流体流
入導管内に常に液体流を維持している本発明の流
出部の存在によつて、調量装置前の圧力が安定化
されて、調量横断面における圧力差は調量過程中
変化することがない。この圧力差は測定時間全域
にわたつて一定であり、ひいては調量量が配量時
間、要するに調量装置の開放時間に厳密に比例す
る。Effects of the Invention The metering device of the present invention has the advantage that, unlike the known examples, the amount of liquid can be metered with high precision even in a short metering time. Due to the presence of the inventive outlet, which maintains a constant flow of liquid in the fluid inlet conduit to the metering device outside of the metering time, the pressure in front of the metering device is stabilized and the metering cross-section is stabilized. The pressure difference across the surfaces does not change during the metering process. This pressure difference is constant over the entire measuring time, so that the metered amount is strictly proportional to the metering time, ie to the opening time of the metering device.
１つの有利な実施態様が特に請求項第２項に示
されている。この場合の流出部の寸法設定によれ
ば、配量過程以外にも、液体流入導管内に配量過
程中に流れる流量に等しい量の液体流が生ずる。
配量過程の開始と共にの液体流はそのまま調量装
置の配量出口へ導びかれ、その量を変えることが
ない。かくして、配量過程中調量横断面における
いかなる圧力変動も確実に防止され、調量量は調
量装置の開放時間に厳密に比例する。 One advantageous embodiment is indicated in particular in claim 2. Due to the dimensioning of the outlet in this case, in addition to the dosing process, a flow of liquid occurs in the liquid inlet conduit in an amount equal to the flow rate that flows during the dosing process.
The liquid flow at the beginning of the dosing process is conducted directly to the dosing outlet of the dosing device without changing its volume. In this way, any pressure fluctuations in the dosing cross section during the dosing process are reliably prevented, and the dosing amount is strictly proportional to the opening time of the dosing device.
別の有利な実施態様が特に請求項第４項並びに
第５項との関連で請求項第３項の構成によつても
得られる。この構成によれば調量装置を技術的に
簡単に具体化することができる。 Further advantageous embodiments are also obtained by the features of claim 3, especially in conjunction with claim 4 and claim 5. With this configuration, the metering device can be implemented in a technically simple manner.
本発明の調量装置は、必然的に極めて短かな配
量時間しかあたえられていなくて、しかも例えば
内燃機関の燃料噴射ポンプにおけるように液体量
の高精度の調量が重要であるようなすべての場合
に有利に使用することができる。 The dosing device according to the invention is suitable for all applications where only very short dosing times are necessarily available and where highly precise dosing of the liquid quantity is important, for example in fuel injection pumps of internal combustion engines. It can be used advantageously in the case of
本発明の調量装置のこのように使用する場合、
請求項７項の実施態様によれば、流出部が調量装
置への燃料流入導管に接続された１つの圧力制御
弁の放圧出口に効果的に接続される。圧力制御弁
は燃料タンクに接続されているので、流出部を介
して流出する燃料量は燃料流入導管へ再び搬送す
るために燃料タンクへ戻される。 In this use of the metering device of the invention,
According to the embodiment of claim 7, the outlet is advantageously connected to a pressure relief outlet of a pressure control valve connected to the fuel inlet conduit to the metering device. The pressure control valve is connected to the fuel tank, so that the amount of fuel exiting via the outlet is returned to the fuel tank for conveyance back to the fuel inlet conduit.
実施例
次に図面に示した実施例に従つて本発明を詳述
する：
図面は、燃料噴射ポンプとこの燃料噴射ポンプ
に燃料量を配量するための調量装置とを備えた内
燃機関の燃料噴射系を略示している。EMBODIMENTS The invention will now be explained in more detail with reference to the embodiments shown in the drawings: The drawings show a diagram of an internal combustion engine with a fuel injection pump and a metering device for metering a quantity of fuel to the fuel injection pump. The fuel injection system is schematically shown.
図示の燃料噴射ポンプの場合ポンプハウジング
１１に孔１２が形成されており、この孔１２内で
プラジヤ１３がポンプ作業室１４を形成してい
る。プラジヤ１３は１つのカム円板、即ちその側
方へずらして90度回転させて図示されているカム
リング１６上を接触回転するカム円板１５を介し
て駆動され、その際回転運動に伴つて吸込又は充
てん工程と圧送行程とを有する往復ポンプ運動を
行なう。ポンプ作業室１４への燃料供給は、調量
装置２０の配量出口に充てん導管１８を介して接
続されている通路１７を介して行なわれる。調量
装置２０は入口側で燃料流入導管１９を介してポ
ンプ吸込室２１（鎖線）に接続されている。燃料
流入導管１９内には１つの圧力制御弁２２が絞り
個所２３と直列に配置されている。この圧力制御
弁２２は燃料流入導管１９内の圧力一定に保つて
２バールに制限している。この燃料流入導管１９
はまた中断なしにポンプ吸込室２１から調量装置
２０へ通ずることができる。圧力制御弁２２はこ
の場合燃料流入導管１９に接続されており、絞り
個所２３は燃料流入導管１９内に、それも流れ方
向で見て燃料流入導管１９への圧力制御弁２２の
接続部前に設けれている。ポンプ吸込室２１は燃
料ポンプ２４によつて燃料タンク２５から燃料を
供給され、この場合ポンプ吸込室２１内の圧力
は、燃料ポンプ２４に対して並列に接続されてい
る別の圧力制御弁２６を介して調整される。 In the case of the illustrated fuel injection pump, a bore 12 is formed in the pump housing 11 in which a plunger 13 forms a pump working chamber 14 . The plastic gear 13 is driven via a cam disk 15, which rotates in contact on a cam disk, namely a cam ring 16, which is shown rotated by 90 degrees after being shifted to the side, with the suction being caused by the rotational movement. Alternatively, a reciprocating pumping motion having a filling process and a pumping process is performed. The fuel supply to the pump work chamber 14 takes place via a channel 17 which is connected via a filling conduit 18 to a metering outlet of the metering device 20 . The metering device 20 is connected on the inlet side via a fuel inlet line 19 to a pump suction chamber 21 (dashed line). A pressure control valve 22 is arranged in the fuel inlet line 19 in series with the throttle point 23 . This pressure control valve 22 keeps the pressure in the fuel inlet conduit 19 constant and limited to 2 bar. This fuel inflow conduit 19
can also be passed from the pump suction chamber 21 to the metering device 20 without interruption. The pressure control valve 22 is in this case connected to the fuel inlet line 19 , with a throttle point 23 in the fuel inlet line 19 , also before the connection of the pressure control valve 22 to the fuel inlet line 19 , viewed in the flow direction. It is provided. The pump suction chamber 21 is supplied with fuel from a fuel tank 25 by a fuel pump 24, in which case the pressure in the pump suction chamber 21 is controlled by a further pressure control valve 26 connected in parallel to the fuel pump 24. Adjusted through.
プラジヤ１３の吸込行程中調量装置２０からポ
ンプ作業室１４に調量された燃料はプランジヤ１
３の圧送行程中に１つの圧送導管２７を介して噴
射弁２８へ供給される。内燃機関の各シリンダ用
に各１つの噴射弁２８および圧送導管２７が配置
されている。プランジヤ１３の回動に伴つて順次
各圧送導管２７がポンプ作業室に接続される。 During the suction stroke of the plunger 13, the fuel metered into the pump working chamber 14 from the metering device 20 is transferred to the plunger 1.
During the three pumping strokes, the injection valve 28 is supplied via one pumping conduit 27. One injection valve 28 and one pressure line 27 are arranged for each cylinder of the internal combustion engine. As the plunger 13 rotates, each pressure feed conduit 27 is sequentially connected to the pump working chamber.
噴射時点に影響を及ぼすために、周知の通り閉
制御通路２９および噴射調節ピストン３０が設け
られており、その構造および作用形式は冒頭に述
べたドイツ連邦共和国特許出願公開第3318236号
明細書に詳述の通りである。 In order to influence the injection point, a closed control channel 29 and an injection regulating piston 30 are provided in a known manner, the construction and mode of operation of which are detailed in DE 33 18 236 A1 mentioned at the outset. As stated above.
調量装置２０は３／２方向制御弁磁石３５、即
ち３ポート２位置型の方向制御磁石弁として構成
されており、その第３の接続部が流出部３４をな
していて、絞り個所３１を介して圧力制御弁２２
の放圧出口３２に接続されており、この放圧出口
３２は燃料タンク２５へ通じている。３／２方向
制御磁石弁３５の出口接続部３８と燃料噴射ポン
プ１０の通路１７との間に接続されている充てん
導管１８内にも絞り個所３３が設けられている。 The metering device 20 is constructed as a 3/2 directional magnet 35, i.e. a 3/2-way directional magnet valve, the third connection of which forms the outlet 34 and which controls the throttle point 31. via pressure control valve 22
The pressure relief outlet 32 communicates with the fuel tank 25 . A throttle point 33 is also provided in the filling conduit 18 which is connected between the outlet connection 38 of the 3/2-way magnet valve 35 and the channel 17 of the fuel injection pump 10 .
３／２方向制御磁石弁３５は、燃料流入導管１
９に接続された入口接続部３７を、休止位置の時
に流出部３４に、動作位置の時に充てん導管１８
にそれぞれ接続する。動作位置は調量装置２０の
配量過程の時に占めることになる。３／２方向制
御磁石弁３５を開制御するために１つの電子式の
制御器３６が設けられており、この制御器３６
は、測定用および燃料噴射ポンプの時間制御用に
配慮する必要のあるパラメータに関連して働く。
この制御器３６の作用形式は冒頭に述べたドイツ
連邦共和国特局出願第3318236号明細書に記載の
通りである。 The 3/2-way control magnet valve 35 is connected to the fuel inflow conduit 1
9 to the outlet 34 when in the rest position and to the filling conduit 18 when in the operating position.
Connect to each. The operating position is the one that the metering device 20 occupies during the metering process. One electronic controller 36 is provided to control the opening of the 3/2-way control magnet valve 35.
works in conjunction with the parameters that need to be taken into account for measurement and time control of the fuel injection pump.
The mode of operation of this controller 36 is as described in German Special Patent Application No. 3318236 mentioned at the outset.
流出部３４並びに充てん導管１８における絞り
個所３１，３３は、両方の絞り横断面積の比が絞
り横断面に生ずる圧力差を開方した比の逆数値に
等しくなるように設計されている。既述のように
燃料流入導管１９内の圧力はコンスタントに２バ
ールであつて、圧力制御弁１の放圧出口２２にお
ける圧力は１バールである。通路１７内の圧力は
０バールにする必要がある。従つて、絞り個所３
１と絞り個所３３との絞り横断面積の比は√２：
１となる。絞り横断面積のこのような寸法設定に
よれば、流出部３４を介して単位時間当りに流出
する燃料量は、配量過程中に単位時間当りに通路
１７内に配量される燃料量に等しいことになる。
このようにして、３／２方向制御磁石弁３５の基
本位置においても動作位置においても常に同量の
燃料流が燃料流入導管１９内を流れることにな
る。この燃料流は３／２方向制御磁石弁３５が切
換えられてもたんに向きを換えられるだけであ
り、従つて配量過程の開始時にも終了時にも調量
横断面における圧力差、要するに絞り個所３３の
前後の圧力が変化することはない。このような高
精度の圧力差定数によつて、燃料噴射ポンプに配
量される燃料量は配量時間に厳密に比例し、適当
なパルス継続時間を有する、制御器３６の相応の
制御パルスによつて高精度に設定することができ
る。 The throttle points 31, 33 in the outlet 34 as well as in the filling conduit 18 are designed such that the ratio of the two throttle cross-sections is equal to the reciprocal of the ratio of the pressure difference occurring across the throttle cross-section. As already mentioned, the pressure in the fuel inlet conduit 19 is constantly 2 bar, and the pressure at the relief outlet 22 of the pressure control valve 1 is 1 bar. The pressure in the passage 17 must be 0 bar. Therefore, the drawing point 3
The ratio of the aperture cross-sectional area between 1 and the aperture point 33 is √2:
It becomes 1. With such a dimensioning of the throttle cross-sectional area, the amount of fuel flowing out per unit time via the outlet 34 is equal to the amount of fuel dispensed per unit time into the channel 17 during the dosing process. It turns out.
In this way, the same amount of fuel flows through the fuel inlet conduit 19 at all times in the basic position and in the operating position of the 3/2-way magnet valve 35. This fuel flow can only be redirected by switching the 3/2-way magnet valve 35, so that the pressure difference in the metering cross-section, i.e. at the throttle point, both at the beginning and at the end of the metering process. The pressure before and after 33 does not change. With such a highly accurate pressure difference constant, the quantity of fuel dispensed into the fuel injection pump is strictly proportional to the dosing time and is dependent on the corresponding control pulses of the controller 36 with suitable pulse durations. Therefore, it can be set with high precision.
燃料噴射ポンプと関連した図示の燃料噴射系の
作用形式は周知の通りであるが、付言するなら
ば、燃料量の配量はプランジヤ１３の吸込又は充
てん行程中に行なわれその時３／２方向制御磁石
弁３５は図示の動作位置を占める。 The mode of operation of the illustrated fuel injection system in conjunction with the fuel injection pump is well known, but it should be noted that the metering of the fuel quantity takes place during the suction or filling stroke of the plunger 13 and is then controlled in the 3/2 direction. Magnetic valve 35 occupies the operating position shown.
図面は本発明の調量装置の適用例を示す燃料噴
射系の回路図である。
１１……ポンプハウジング、１２……孔、１３
……プランジヤ、１４……ポンプ作業室、１５…
…カム円板、１６……カムリング、１７……通
路、１８……充てん導管、１９……燃料流入導
管、２０……調量装置、２１……ポンプ吸込室、
２２……圧力制御弁、２３……絞り個所、２４…
…燃料ポンプ、２５……燃料タンク、２６……圧
力制御弁、２７……圧送導管、２８……噴射弁、
２９……閉制御通路、３０……噴射調節ピスト
ン、３１……絞り個所、３２……放圧出口、３３
……絞り個所、３４……流出部、３５……３／２
方向制御磁石弁、３６……制御器、３７……入口
接続部、３８……出口接続部。
The drawing is a circuit diagram of a fuel injection system showing an example of application of the metering device of the present invention. 11... Pump housing, 12... Hole, 13
...Plunger, 14...Pump work chamber, 15...
... cam disk, 16 ... cam ring, 17 ... passage, 18 ... filling conduit, 19 ... fuel inflow conduit, 20 ... metering device, 21 ... pump suction chamber,
22...pressure control valve, 23...throttle point, 24...
...Fuel pump, 25...Fuel tank, 26...Pressure control valve, 27...Pressure conduit, 28...Injection valve,
29... Closed control passage, 30... Injection adjustment piston, 31... Throttle point, 32... Pressure relief outlet, 33
... Squeezing point, 34 ... Outflow part, 35 ... 3/2
Directional control magnet valve, 36...controller, 37...inlet connection, 38...outlet connection.
Claims (1)
流入導管に接続可能な入口と、配量容積に接続可
能な出口と、配量過程中に入口および出口を互い
に接続する制御可能な１つの調量部材とを備えて
いる形式のものにおいて、配量過程以外では常に
入口に接続されている１つの流出部３４が設けら
れていることを特徴とする、調量装置。 ２ 流出部３４が、単位時間当りの流出する流体
量が配量過程中に単位時間当りに配量される液体
量に等しいように、寸法を設定されている、特許
請求の範囲第１項の調量装置。 ３ 入口および出口３７，３８、流出部３４、調
量部材が電磁式に制御される１つの３／２方向制
御弁３５によつて構成されている、特許請求の範
囲第１項又は第２項記載の調量装置。 ４ ３／２方向制御弁３５の、出口３８および流
出部３４を形成している弁接続部に、流れ方向
で、絞り横断面を限定された各１つの絞り個所３
３，３１が後置されている、特許請求の範囲第３
項記載の調量装置。 ５ 両方の絞り横断面積の比が、絞り横断面に生
ずる圧力差を開方した比の逆数値に等しく選定さ
れている、特許請求の範囲第４項記載の調量装
置。 ６ 内燃機関用の燃料噴射系に組み付けられてい
る、特許請求の範囲第１項から第５項までのいず
れか１項記載の調量装置。 ７ 入口３７が燃料噴射ポンプの吸込室２１に通
ずる燃料流入導管１９に接続されており、出口３
８がポンプ作業室１４に接続可能な充てん導管１
８に接続されており、流出部３４が前記燃料流入
導管１９に接続された圧力制御弁２２の放圧出口
部３２に接続されている、特許請求の範囲第６項
記載の調量装置。[Scope of Claims] 1. A metering device for dispensing a liquid quantity, comprising an inlet connectable to a liquid inlet conduit, an outlet connectable to a dosing volume, and an inlet and an outlet connected during the dosing process. and one controllable metering element connected to one another, characterized in that there is one outlet 34 which is always connected to the inlet except during the metering process. Quantity device. 2. The outflow part 34 is dimensioned in such a way that the amount of fluid flowing out per unit time is equal to the amount of liquid dispensed per unit time during the dosing process. Metering device. 3. Claim 1 or 2, wherein the inlet and outlet 37, 38, the outflow portion 34, and the metering member are constituted by one 3/2 directional control valve 35 that is electromagnetically controlled. Metering device as described. At the valve connection forming the outlet 38 and the outlet 34 of the 4 3/2-way control valve 35, there is in each case one throttle point 3 with a defined throttle cross-section in the flow direction.
Claim 3, followed by 3 and 31.
Measuring device as described in section. 5. A metering device according to claim 4, wherein the ratio of the two throttle cross-sections is selected to be equal to the reciprocal of the ratio of the pressure difference occurring across the throttle cross-section. 6. The metering device according to any one of claims 1 to 5, which is assembled into a fuel injection system for an internal combustion engine. 7 The inlet 37 is connected to the fuel inlet conduit 19 leading to the suction chamber 21 of the fuel injection pump, and the outlet 3
Filling conduit 1 8 connectable to pump working chamber 14
7. A metering device as claimed in claim 6, characterized in that it is connected to a pressure relief outlet (32) of a pressure control valve (22) connected to the fuel inlet conduit (19), the outlet (34) of which is connected to the fuel inlet conduit (19).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843429129 DE3429129C2 (en) | 1984-08-08 | 1984-08-08 | Dosing device for metering liquid quantities |
| DE3429129.6 | 1984-08-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6150627A JPS6150627A (en) | 1986-03-12 |
| JPH0580253B2 true JPH0580253B2 (en) | 1993-11-08 |
Family
ID=6242566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60173364A Granted JPS6150627A (en) | 1984-08-08 | 1985-08-08 | Quantity regulator for measuring liquid amount |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6150627A (en) |
| DE (1) | DE3429129C2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4016309A1 (en) * | 1990-05-21 | 1991-11-28 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| US5133645A (en) * | 1990-07-16 | 1992-07-28 | Diesel Technology Corporation | Common rail fuel injection system |
| US5230613A (en) * | 1990-07-16 | 1993-07-27 | Diesel Technology Company | Common rail fuel injection system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5729816B2 (en) * | 1974-10-01 | 1982-06-24 | ||
| JPS598555A (en) * | 1982-07-08 | 1984-01-17 | Toyota Motor Corp | Air vent auxiliary device of air over hydraulic brake device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5729816U (en) * | 1980-07-25 | 1982-02-17 | ||
| DE3318236A1 (en) * | 1983-05-19 | 1984-11-22 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
-
1984
- 1984-08-08 DE DE19843429129 patent/DE3429129C2/en not_active Expired - Fee Related
-
1985
- 1985-08-08 JP JP60173364A patent/JPS6150627A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5729816B2 (en) * | 1974-10-01 | 1982-06-24 | ||
| JPS598555A (en) * | 1982-07-08 | 1984-01-17 | Toyota Motor Corp | Air vent auxiliary device of air over hydraulic brake device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3429129A1 (en) | 1986-02-20 |
| DE3429129C2 (en) | 1995-01-19 |
| JPS6150627A (en) | 1986-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| RU2280769C2 (en) | Metering system | |
| US3888420A (en) | Positive-displacement mist lubricator | |
| US4671232A (en) | Fuel injection system for self-igniting internal combustion engines | |
| US4506497A (en) | Method and device for metering and injecting small amounts of fluid into the splicing air of a compressed gas thread splicing device | |
| US4407249A (en) | Fuel injection pump for self-igniting internal combustion engines | |
| JPS6123388B2 (en) | ||
| US5762033A (en) | Injection device for combined injection of fuel and supplementary fluid or liquid | |
| JPH03237246A (en) | Fuel distribution injection pump having electronic control device | |
| JPH0467009B2 (en) | ||
| JPH0580253B2 (en) | ||
| US4364360A (en) | Fuel injection system functioning with pump/nozzles | |
| GB1252437A (en) | ||
| JPS633154B2 (en) | ||
| JPH0350379A (en) | Fuel injection pump for internal- combustion engine | |
| US4059369A (en) | Fuel injection pump | |
| EP0530206B1 (en) | Fuel-injection pump for internal-combustion engines | |
| GB1244727A (en) | Liquid fuel injection pumping apparatus | |
| US4557237A (en) | Bypass restrictor for distribution valve | |
| US4136655A (en) | Fuel metering valve with inlet metering control | |
| US3179100A (en) | Liquid fuel pumping apparatus for internal combustion engines | |
| JPH0245013B2 (en) | ||
| US4462371A (en) | Fuel pumping apparatus | |
| US5044890A (en) | Fuel injection pump for internal combustion engines | |
| GB1472125A (en) | Fuel-injection pump for an internal combustion eingine | |
| US3664773A (en) | Liquid fuel injection pumping apparatus |