EP0429592B1 - Fuel injection pump for internal combustion engines - Google Patents
Fuel injection pump for internal combustion engines Download PDFInfo
- Publication number
- EP0429592B1 EP0429592B1 EP90908464A EP90908464A EP0429592B1 EP 0429592 B1 EP0429592 B1 EP 0429592B1 EP 90908464 A EP90908464 A EP 90908464A EP 90908464 A EP90908464 A EP 90908464A EP 0429592 B1 EP0429592 B1 EP 0429592B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drive shaft
- fuel injection
- injection pump
- bearing
- angular position
- 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
- 238000002347 injection Methods 0.000 title claims abstract description 24
- 239000007924 injection Substances 0.000 title claims abstract description 24
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Images
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
-
- 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
- F02M41/121—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 with piston arranged axially to driving shaft
-
- 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
- F02M51/00—Fuel-injection apparatus characterised by being operated electrically
- F02M51/005—Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus
-
- 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
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
Definitions
- the invention relates to a fuel injection pump for internal combustion engines according to the preamble of claim 1.
- Such a fuel injection pump is already known from DE-OS 33 36 871.
- This fuel injection pump has a pump and distributor piston as well as a lifting disk driving it in a rotary-stroke movement.
- the lifting disk which is non-rotatably connected to a drive shaft, receives its lifting movement as a result of the rolling off of end cams arranged on the lifting disk on rollers of a fixed roller ring.
- the fuel injection pump is provided with a rotary encoder which has marks arranged on the circumference of a part which rotates synchronously with the drive shaft and a detector which scans the marks.
- the detector is attached to the roller ring, which can be rotated by an injection adjuster for the purpose of adjusting the injection timing.
- the roller ring and the drive shaft are not supported against each other, so that the two parts can perform uncontrolled relative movements to one another which are superimposed on the actual rotary movement and thus falsify the measurement result.
- the fuel injection pump according to the invention with the characterizing features of claim 1 has the advantage that uncontrolled relative movements between these two parts are prevented by the bearing between the rotatable part of the cam drive and the drive shaft and high accuracy in the detection of the speed and the rotational position of the drive shaft is achieved.
- FIG. 1 An embodiment of the invention is shown in the drawing and explained in more detail in the following description.
- the figure shows a fuel injection pump as a longitudinal section.
- the figure shows a fuel injection pump of the distributor type for a diesel internal combustion engine.
- a drive shaft 11 is mounted in the housing 10 of the injection pump.
- This is coupled to a lifting disk 12 which is arranged transversely to the axis of the drive shaft 11 and which, as part of a cam drive, carries a cam track 13 with end cam elevations 14.
- the running surface of the lifting disc 12 rests on rollers 16 which are held in a roller ring 17 which also belongs to the cam drive.
- This is rotatably supported in a cylindrical recess of the housing and is supported axially fixed to the housing on a bottom part of the recess.
- the lifting disk 12 executes a rotating-lifting movement.
- a pump working space 23 is delimited in the cylinder liner 19 by the pump piston 21 on the one hand and a solenoid valve 22 inserted into the cylinder liner 19 on the other hand.
- the pump working chamber 23 can be connected to the pump interior 28 via channels 24 and 25 in the solenoid valve 22 and a fuel channel 27 in the cylinder liner 19.
- the passage of the channels 24 and 25 in the solenoid valve 22 can be closed by a valve closing element, not shown, so that the pump working space 23 is separated.
- the solenoid valve 22 is actuated by a control unit, not shown, which operates as a function of parameters which are to be taken into account for the dimensioning and the timing of the fuel injection quantity and which can contain a map for this purpose, in which target values for the fuel quantity to be injected are contained.
- a control unit not shown, which operates as a function of parameters which are to be taken into account for the dimensioning and the timing of the fuel injection quantity and which can contain a map for this purpose, in which target values for the fuel quantity to be injected are contained.
- the passage between the channels 24 and 25 in the solenoid valve 22 is closed at a point in time determined by the control device and thus the pump work chamber 23 is closed, so that pressure builds up in the pump work chamber 23 and fuel via an axial relief channel 20 in the pump piston and one connected with this distributor opening 31 in a delivery line 32 leading to a cylinder of the internal combustion engine is pressed.
- the passage between the channels 24 and 25 is opened again and the pressure delivery into the delivery line 32 is thus interrupted and the injection is ended.
- the fuel delivered by the pump piston 21 until it reaches its top dead center then flows back into the pump interior 28 via the channels 24 and 25 and the fuel channel 27.
- An injection adjuster 33 is also provided in the injection pump, which adjusts the injection timing in the direction of increasing speed.
- the injection adjuster 33 rotates the roller ring 17 in the circumferential direction, so that the lifting movement of the lifting disk 12 takes place earlier in relation to the angle of rotation of the drive shaft.
- the control device To control the solenoid valve 22, the control device requires signals relating to the rotational speed and the rotational position of the drive shaft 11. These signals are obtained via a rotary position sensor 34, of which a sensor wheel 36 is connected in a rotationally fixed manner to the drive shaft 11. A part of the rotary position sensor 34 designed as a detector 37 is fastened in the roller ring 17, which is provided with a cylindrical extension 35 and with which it surrounds the sensor wheel 36 on its circumference. A number of marks 38 corresponding to the number of cylinders of the internal combustion engine is attached to the transmitter wheel 36.
- the arrangement of the marks 38 is selected such that the detector 37 detects a mark 38 when the drive shaft 11 assumes a certain rotational position in which the pump piston 21 has reached its bottom dead center, for example, and the delivery stroke of the pump piston 21 begins.
- a large number of equidistant markings 39 are arranged between two marks 38 on the encoder wheel 36.
- the markings 39 are clearly distinguishable from the marks 38, e.g. B. by different Size.
- the markings 39 are also detected by the detector 37, but it is also possible to use a further separate detector to scan the markings 39.
- the current speed of the drive shaft 11 is determined with the aid of the markings 39.
- the roller ring 17 is connected to the drive shaft 11 via a bearing 41, which is designed here as a deep groove ball bearing.
- the bearing 41 is pressed between the cylindrical extension 35 of the roller ring 17 and a shaft section 42 of the drive shaft 11.
- the encoder wheel 36 is fixed between the bearing 41 and a collar 43 of the drive shaft 11.
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
Die Erfindung geht aus von einer Kraftstoffeinspritzpumpe für Brennkraftmaschinen nach der Gattung des Anspruchs 1.The invention relates to a fuel injection pump for internal combustion engines according to the preamble of claim 1.
Eine solche Kraftstoffeinspritzpumpe ist bereits aus der DE-OS 33 36 871 bekannt. Diese Kraftstoffeinspritzpumpe weist einen Pumpen- und Verteilerkolben sowie eine diesen in einer Dreh-Hub-Bewegung antreibende Hubscheibe auf. Die drehfest mit einer Antriebswelle verbundene Hubscheibe erhält ihre Hubbewegung infolge des Abwälzens von auf der Hubscheibe angeordneten Stirnnocken auf Rollen eines feststehenden Rollenrings. Zum Zwecke des Erfassens der Drehlage und der Drehzahl der Antriebswelle ist die Kraftstoffeinspritzpumpe mit einem Drehgeber versehen, der am Umfang eines sich mit der Antriebswelle synchron drehenden Teils angeordnete Marken und einen die Marken abtastenden Detektor aufweist. Der Detektor ist am Rollenring befestigt, der zum Zwecke einer Verstellung des Einspritzzeitpunkts durch einen Spritzversteller verdrehbar ist. Der Rollenring und die Antriebswelle sind nicht gegeneinander gelagert, so daß die beiden Teile unkontrollierte Relativbewegungen zueinander ausführen können, die der eigentlichen Drehbewegung überlagert sind und somit das Meßergebnis verfälschen.Such a fuel injection pump is already known from DE-OS 33 36 871. This fuel injection pump has a pump and distributor piston as well as a lifting disk driving it in a rotary-stroke movement. The lifting disk, which is non-rotatably connected to a drive shaft, receives its lifting movement as a result of the rolling off of end cams arranged on the lifting disk on rollers of a fixed roller ring. For the purpose of detecting the rotational position and the rotational speed of the drive shaft, the fuel injection pump is provided with a rotary encoder which has marks arranged on the circumference of a part which rotates synchronously with the drive shaft and a detector which scans the marks. The detector is attached to the roller ring, which can be rotated by an injection adjuster for the purpose of adjusting the injection timing. The roller ring and the drive shaft are not supported against each other, so that the two parts can perform uncontrolled relative movements to one another which are superimposed on the actual rotary movement and thus falsify the measurement result.
Die erfindungsgemäße Kraftstoffeinspritzpumpe mit den kennzeichnenden Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß durch das Lager zwischen dem verdrehbaren Teil des Nockenantriebs und der Antriebswelle unkontrollierte Relativbewegungen zwischen diesen beiden Teilen unterbunden sind und eine hohe Genauigkeit in der Erfassung der Drehzahl sowie der Drehlage der Antriebswelle erzielt ist.The fuel injection pump according to the invention with the characterizing features of claim 1 has the advantage that uncontrolled relative movements between these two parts are prevented by the bearing between the rotatable part of the cam drive and the drive shaft and high accuracy in the detection of the speed and the rotational position of the drive shaft is achieved.
In den Unteransprüchen sind vorteilhafte Ausgestaltungen der Erfindung gekennzeichnet.Advantageous embodiments of the invention are characterized in the subclaims.
Ein Ausführungsbeispiel der Erfindung ist in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert. Die Figur zeigt eine Kraftstoffeinspritzpumpe als Längsschnitt.An embodiment of the invention is shown in the drawing and explained in more detail in the following description. The figure shows a fuel injection pump as a longitudinal section.
In der Figur ist eine Kraftstoffeinspritzpumpe der Verteilerbauart für eine Diesel-Brennkraftmaschine dargestellt. Im Gehäuse 10 der Einspritzpumpe ist eine Antriebswelle 11 gelagert. Diese ist mit einer quer zur Achse der Antriebswelle 11 angeordneten Hubscheibe 12 gekoppelt, die als Teil eines Nockenantriebs eine Nockenbahn 13 mit Stirnnockenerhebungen 14 trägt. Die Lauffläche der Hubscheibe 12 liegt auf Rollen 16 auf, die in einem ebenfalls zum Nockenantrieb gehörenden Rollenring 17 gehalten sind. Dieser ist in einer zylindrischen Ausnehmung des Gehäuses drehbar gelagert und stützt sich axial gehäusefest an einem Bodenteil der Ausnehmung ab.The figure shows a fuel injection pump of the distributor type for a diesel internal combustion engine. A
Durch die drehfeste Verbindung der Hubscheibe 12 mit der Antriebswelle 11 und durch die sich auf den Rollen 16 abwälzenden Stirnnocken 14 führt die Hubscheibe 12 eine Dreh-Hub-Bewegung aus.Due to the rotationally fixed connection of the
Ein in einer Zylinderbohrung 18 einer Zylinderbüchse 19 gleitender Pumpen- und Verteilerkolben, im folgenden kurz Pumpenkolben 21 genannt, ist mit der Hubscheibe 12 gekoppelt und führt ebenfalls eine Dreh-Hub-Bewegung aus. In der Zylinderbüchse 19 ist durch den Pumpenkolben 21 einerseits und ein in die Zylinderbüchse 19 eingesetztes Magnetventil 22 andererseits ein Pumpenarbeitsraum 23 begrenzt. Der Pumpenarbeitsraum 23 ist über Kanäle 24 und 25 im Magnetventil 22 sowie einen Kraftstoffkanal 27 in der Zylinderbüchse 19 mit dem Pumpeninnenraum 28 verbindbar. Der Durchgang der Kanäle 24 und 25 im Magnetventil 22 ist durch ein nicht dargestelltes Ventilschließglied verschließbar, so daß der Pumpenarbeitsraum 23 abgetrennt ist. Das Magnetventil 22 wird von einem nicht dargestellten Steuergerät betätigt, das in Abhängigkeit von Parametern arbeitet, die für die Bemessung und die Zeitsteuerung der Kraftstoffeinspritzmenge zu berücksichtigen sind und das hierzu ein Kennfeld enthalten kann, in dem Sollwerte für die einzuspritzende Kraftstoffmenge enthalten sind. Während des Saughubs des Pumpenkolbens 21 stömt durch den Kraftstoffkanal 27 sowie die Kanäle 24 und 25 im Magnetventil 22 bei geöffnetem Ventil Kraftstoff aus dem Pumpeninnenraum 28 in den Pumpenarbeitsraum 23. Der Pumpeninnenraum 28 wird von einer über die Antriebswelle 11 angetriebenen Flügelzellen-Förderpumpe 29 mit Kraftstoff aus einem Kraftstoffbehälter versorgt.A pump and distributor piston sliding in a
Beim Förderhub des Pumpenkolbens 21 wird der Durchgang zwischen den Kanälen 24 und 25 im Magnetventil 22 zu einem vom Steuergerät bestimmten Zeitpunkt verschlossen und somit der Pumpenarbeitsram 23 verschlossen, so daß ein Druckaufbau im Pumpenarbeitsraum 23 erfolgt und Kraftstoff über einen axialen Entlastungskanal 20 im Pumpenkolben und eine mit diesem verbundene Verteileröffnung 31 in eine zu einem Zylinder der Brennkraftmaschine führende Förderleitung 32 gedrückt wird. Zu einem ebenfalls vom Steuergerät bestimmten Zeitpunkt wird der Durchgang zwischen den Kanälen 24 und 25 wieder geöffnet und somit die Druckförderung in die Förderleitung 32 unterbrochen und die Einspritzung beendet. Der weiter bis zum Erreichen seines oberen Totpunktes vom Pumpenkolben 21 geförderte Kraftstoff strömt dann über die Kanäle 24 und 25 sowie den Kraftstoffkanal 27 in den Pumpeninnenraum 28 zurück.During the delivery stroke of the
In der Einspritzpumpe ist außerdem ein Spritzversteller 33 vorgesehen, der mit zunehmender Drehzahl den Einspritzzeitpunkt in Richtung früh verstellt. Hierzu verdreht der Spritzversteller 33 den Rollenring 17 in Umfangsrichtung, so daß die Hubbewegung der Hubscheibe 12 in bezug auf den Drehwinkel der Antriebswelle 11 entsprechend früher erfolgt.An
Das Steuergerät benötigt zur Steuerung des Magnetventils 22 Signale über die Drehzahl sowie die Drehlage der Antriebswelle 11. Diese Signale werden über einen Drehstellungsgeber 34 gewonnen, von dem als ein Teil ein Geberrad 36 mit der Antriebswelle 11 verdrehfest verbunden ist. Ein als Detektor 37 ausgebildeter Teil des Drehstellungsgebers 34 ist im Rollenring 17 befestigt, der mit einem zylindrischen Ansatz 35 versehen ist und mit diesem das Geberrad 36 auf dessen Umfang umgibt. Auf dem Geberrad 36 ist eine der Anzahl der Zylinder der Brennkraftmaschine entsprechende Anzahl von Marken 38 angebracht. Die Anordnung der Marken 38 ist dabei so gewählt, daß der Detektor 37 jeweils eine Marke 38 erfaßt, wenn die Antriebswelle 11 eine bestimmte Drehlage einnimmt, in der der Pumpenkolben 21 beispielsweise seinen unteren Totpunkt erreicht hat und der Förderhub des Pumpenkolbens 21 beginnt. Außerdem sind zwischen jeweils zwei Marken 38 auf dem Geberrad 36 noch eine Vielzahl äquidistanter Markierungen 39 angeordnet. Die Markierungen 39 sind deutlich unterscheidbar von den Marken 38 ausgebildet, z. B. durch unterschiedliche Größe. Die Markierungen 39 werden ebenfalls vom Detektor 37 erfaßt, es ist jedoch auch möglich, zur Abtastung der Markierungen 39 einen weiteren separaten Detektor zu verwenden. Mit Hilfe der Markierungen 39 wird die momentane Drehzahl der Antriebswelle 11 bestimmt.To control the
Der Rollenring 17 ist mit der Antriebswelle 11 über ein Lager 41 verbunden, das hier als Rillenkugellager ausgeführt ist. Das Lager 41 ist zwischen dem zylindrischen Ansatz 35 des Rollenrings 17 und einem Schaftabschnitt 42 der Antriebswelle 11 eingepreßt. Das Geberrad 36 ist zwischen dem Lager 41 und einem Bund 43 der Antriebswelle 11 fixiert. Durch die Anbringung des Detektors 37 am Rollenring 17 bleibt bei einer Verstellung des Einspritzzeitpunkts die Zuordnung zwischen dem Detektor 37 und der Hubbewegung des Pumpenkolbens 21 erhalten, da der Detektor 37 mit dem Rollenring 17 mit verdreht wird. Durch das Lager 41 werden unkontrollierte Relativbewegungen zwischen dem Detektor 37 und dem Geberrad 36 unterbunden, so daß die Drehzahl und die Drehlage der Antriebswelle 11 mit hoher Genauigkeit erfaßt werden können.The
Claims (4)
- Fuel injection pump for internal combustion engines with at least one pump plunger (21) moved by a cam drive consisting of an essentially stationary part (17) and of a rotating part (12) driven by a drive shaft (11), of which parts the one has a cam track (12) with several elevations (14), and the essentially stationary part (17) can be rotated in relation to the rotating part by means of an adjustment device (33) and the coordination of the stroke of the pump plunger (21), of which there is at least one, brought about by the elevations (14) with the rotational angle of the drive shaft (11) can be varied thereby, and having a device for controlling the fuel injection using a rotational rotary position transmitter (34) which has a first transmitter part (37) which is coupled with the part (17) of the cam drive, which part (17) can be rotated by means of the adjustment device (33), and which has second transmitter parts (38, 39) arranged on the drive shaft (11) or on a part (36) rotationally connected with the drive shaft (11), characterised in that the part (17) of the cam drive, which part (17) can be rotated by means of the adjustment device (33), is supported on the drive shaft (11) by way of a bearing (41).
- Fuel injection pump according to Claim 1, characterised in that the bearing (41) is a rolling bearing.
- Fuel injection pump according to Claim 2, characterised in that the bearing (41) is a deep groove ball bearing.
- Fuel injection pump according to Claim 2 or 3, characterised in that the part (17) of the cam drive, which part (17) can be rotated by means of the adjustment device (33), is provided with a cylindrical extension (35), the bearing (41) being pressed in between the extension (35) and the drive shaft (11).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3920459 | 1989-06-22 | ||
| DE3920459A DE3920459A1 (en) | 1989-06-22 | 1989-06-22 | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0429592A1 EP0429592A1 (en) | 1991-06-05 |
| EP0429592B1 true EP0429592B1 (en) | 1993-09-01 |
Family
ID=6383335
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90908464A Expired - Lifetime EP0429592B1 (en) | 1989-06-22 | 1990-06-01 | Fuel injection pump for internal combustion engines |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5138997A (en) |
| EP (1) | EP0429592B1 (en) |
| JP (1) | JP3059212B2 (en) |
| KR (1) | KR0159257B1 (en) |
| DE (2) | DE3920459A1 (en) |
| ES (1) | ES2043378T3 (en) |
| WO (1) | WO1990015925A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9121988D0 (en) * | 1991-10-16 | 1991-11-27 | Lucas Hartridge Limited | Volumetric metering equipment |
| DE4135595A1 (en) * | 1991-10-29 | 1993-05-06 | Robert Bosch Gmbh, 7000 Stuttgart, De | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| DE4137073A1 (en) * | 1991-11-12 | 1993-05-13 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| DE4341424A1 (en) * | 1993-12-04 | 1995-06-08 | Bosch Gmbh Robert | Fuel injection pump |
| US6513371B1 (en) * | 2001-07-31 | 2003-02-04 | Diesel Technology Company | Method for determining fuel injection rate shaping current in an engine fuel injection system |
| US6832748B2 (en) * | 2001-12-05 | 2004-12-21 | Cummins Inc. | Outwardly opening, seat-sealed, force balanced, hydraulic valve and actuator assembly |
| DE102005014808B4 (en) * | 2005-03-31 | 2009-11-26 | Siemens Ag | measuring device |
| BR202017028330U2 (en) * | 2017-12-27 | 2019-07-16 | Robert Bosch Limitada | CONSTRUCTIVE ARRANGEMENT INTRODUCED IN FUEL PUMP |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2142704C3 (en) * | 1971-08-26 | 1974-04-25 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection pump for multi-cylinder internal combustion engines |
| JPS53146029A (en) * | 1977-05-23 | 1978-12-19 | Nippon Soken Inc | Fuel injector for internal combustion engine |
| US4470763A (en) * | 1980-01-17 | 1984-09-11 | Nissan Motor Company | Fuel injection control system |
| JPS5765858A (en) * | 1980-10-07 | 1982-04-21 | Toyota Motor Corp | Fuel control device of diesel engine |
| US4367714A (en) * | 1981-01-19 | 1983-01-11 | Ambac Industries Incorporated | Fuel injection pump |
| JPS59208156A (en) * | 1983-05-13 | 1984-11-26 | Nippon Denso Co Ltd | Fuel injection timing device for distributor type fuel- injection pump |
| IT1194272B (en) * | 1983-06-14 | 1988-09-14 | Spica Spa | IMPROVEMENTS INJECTION PUMP REGULATION SYSTEMS FOR INTERNAL COMBUSTION ENGINES |
| JPS6067749A (en) * | 1983-09-21 | 1985-04-18 | Nippon Denso Co Ltd | Injection timing controller for fuel-injection pump |
| DE3336871A1 (en) * | 1983-10-11 | 1985-04-25 | Robert Bosch Gmbh, 7000 Stuttgart | Fuel injection pump for multi-cylinder internal combustion engines |
| JPH07111151B2 (en) * | 1984-01-10 | 1995-11-29 | 日本電装株式会社 | Fuel injection amount control device for diesel engine |
-
1989
- 1989-06-22 DE DE3920459A patent/DE3920459A1/en not_active Withdrawn
-
1990
- 1990-06-01 ES ES90908464T patent/ES2043378T3/en not_active Expired - Lifetime
- 1990-06-01 EP EP90908464A patent/EP0429592B1/en not_active Expired - Lifetime
- 1990-06-01 US US07/646,743 patent/US5138997A/en not_active Expired - Lifetime
- 1990-06-01 KR KR1019910700203A patent/KR0159257B1/en not_active IP Right Cessation
- 1990-06-01 DE DE90908464T patent/DE59002553D1/en not_active Expired - Fee Related
- 1990-06-01 JP JP2507909A patent/JP3059212B2/en not_active Expired - Fee Related
- 1990-06-01 WO PCT/DE1990/000416 patent/WO1990015925A1/en active IP Right Grant
Also Published As
| Publication number | Publication date |
|---|---|
| WO1990015925A1 (en) | 1990-12-27 |
| ES2043378T3 (en) | 1993-12-16 |
| KR0159257B1 (en) | 1998-12-15 |
| KR920701655A (en) | 1992-08-12 |
| US5138997A (en) | 1992-08-18 |
| DE3920459A1 (en) | 1991-01-03 |
| JPH04500400A (en) | 1992-01-23 |
| EP0429592A1 (en) | 1991-06-05 |
| JP3059212B2 (en) | 2000-07-04 |
| DE59002553D1 (en) | 1993-10-07 |
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