EP0704619B1 - Fuel injection device for a multicylinder internal combustion engine - Google Patents
Fuel injection device for a multicylinder internal combustion engine Download PDFInfo
- Publication number
- EP0704619B1 EP0704619B1 EP95111427A EP95111427A EP0704619B1 EP 0704619 B1 EP0704619 B1 EP 0704619B1 EP 95111427 A EP95111427 A EP 95111427A EP 95111427 A EP95111427 A EP 95111427A EP 0704619 B1 EP0704619 B1 EP 0704619B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- rocker arm
- fuel
- high pressure
- line
- fuel injection
- 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
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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0535—Single overhead camshafts [SOHC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L2001/186—Split rocking arms, e.g. rocker arms having two articulated parts and means for varying the relative position of these parts or for selectively connecting the parts to move in unison
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
Definitions
- the invention relates to a fuel injection system for a multi-cylinder internal combustion engine with the features specified in the preamble of claim 1.
- Such a fuel injection system for a multi-cylinder internal combustion engine is known from EP-A-0 501 459, in which a high-pressure pump delivers fuel into a supply line (common rail) which acts as a high-pressure fuel reservoir.
- the supply line is designed as a high-strength, thick-walled tube and connected to solenoid valve-controlled nozzles via injection lines.
- the invention has for its object to improve the generic fuel injection system between the high pressure pump and the solenoid-controlled nozzles in terms of weight, space and costs.
- the high-pressure fuel accumulator which is located in the hollow rocker arm axis, has a storage volume that corresponds approximately to 300 times the maximum fuel injection quantity of a cylinder. This large volume means that pressure peaks and pressure fluctuations that occur can be kept within permissible limits.
- a beneficial development of the invention results from the fact that, in addition to the supply line as a high-pressure fuel accumulator, at least one further line is arranged in the rocker arm axis and is used to supply the rocker arm with lubricating oil. If necessary, a control line for the camshaft adjustment can be provided in addition to the fuel-carrying line and the lubricating-oil-carrying line.
- a fuel injection system 1 for a diesel internal combustion engine essentially consists of at least one high-pressure pump 2 which delivers the fuel, a high-pressure fuel reservoir as a common supply line 3 and solenoid valve-controlled nozzles 4, the magnets 5 of which can be controlled by an electronic control unit 6 which operates as a function of operating parameters of the internal combustion engine.
- a fuel feed line 7 leading away from the high pressure pump 2 according to FIG. 1 is connected to a hollow rocker arm axis 8.
- the connection of the fuel supply line 7 is located at a free end 9 of the rocker arm axis 8, on which rocker arms 10 designed as valve actuation means and driven by cams 11 of a camshaft 12 are rotatably mounted for actuating intake and exhaust valves 13, 14.
- connections 15 for injection lines 16 are provided between the intake and exhaust valves 13, 14 of the respective cylinder (not shown), which lead to the corresponding nozzles 4. With 17 fuel return lines are designated.
- the rocker arm axis 8 has a fuel-carrying bore which forms the supply line 3, the storage volume of the supply line corresponding approximately to 300 times a maximum fuel injection quantity.
- This ratio also applies to the differently designed exemplary embodiments 3, 4 and 5, which in addition to the supply line 3 also contain an oil-carrying line as a high-pressure fuel reservoir.
- the volume of these lines is considerably smaller, since they have no storage function, but serve to supply lubricating oil to the valve train parts.
- the fuel storage pressure provided for common rail systems is around 1,500 bar.
- the additional hole in the rocker arm axis 8 is designated as an oil-carrying line for the lubricating oil supply with 18, which is significantly smaller in diameter than the fuel-carrying supply line 3. If necessary, a further hole (shown in dash-dotted lines) can be introduced, the oil-carrying control line 19 for with rocker arms 10 cooperating coupling links.
- the rocker arm axis 8 consists of an outer tube 8 'into which an insert body 20 is pressed.
- this insert body 20 contains the fuel-carrying supply line 3, the lubricating-oil-carrying line 18 and optionally the oil-carrying control line 19.
- the hollow rocker arm axis 8 is provided with a longitudinal web 21 which is eccentrically located in the cavity as a partition for forming the fuel-carrying supply line 3 and the lubricating-oil-carrying line 18.
- a further chambering for the control line 19 can optionally be provided by inserting an intermediate wall in the oil-carrying line 18.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Fuel-Injection Apparatus (AREA)
Description
Die Erfindung betrifft eine Kraftstoffeinspritzanlage für eine mehrzylindrige Brennkraftmaschine mit den im Oberbegriff des Patentanspruchs 1 angegebenen Merkmalen.The invention relates to a fuel injection system for a multi-cylinder internal combustion engine with the features specified in the preamble of claim 1.
Aus der EP-A-0 501 459 ist eine derartige Kraftstoffeinspritzanlage für eine mehrzylindrige Brennkraftmaschine bekannt, bei der eine Hochdruckpumpe Kraftstoff in eine als Kraftstoffhochdruckspeicher wirkende Versorgungsleitung (Common Rail) fördert. Die Versorgungsleitung ist als hochfestes und dickwandiges Rohr ausgebildet und über Einspritzleitungen mit magnetventilgesteuerten Düsen verbunden.Such a fuel injection system for a multi-cylinder internal combustion engine is known from EP-A-0 501 459, in which a high-pressure pump delivers fuel into a supply line (common rail) which acts as a high-pressure fuel reservoir. The supply line is designed as a high-strength, thick-walled tube and connected to solenoid valve-controlled nozzles via injection lines.
Der Erfindung liegt die Aufgabe zugrunde, die gattungsgemäße Kraftstoffeinspritzanlage zwischen der Hochdruckpumpe und den magnetventilgesteuerten Düsen hinsichtlich Gewicht, Platzbedarf und Kosten zu verbessern.The invention has for its object to improve the generic fuel injection system between the high pressure pump and the solenoid-controlled nozzles in terms of weight, space and costs.
Zur Lösung der Aufgabe dienen die im Kennzeichen des Patentanspruchs 1 angegebenen Merkmale.The features specified in the characterizing part of patent claim 1 serve to achieve the object.
Durch die besonderen Maßnahmen, nämlich eine als Lager für Ventilbetätigungsmittel zur Betätigung von Einlaß- und Auslaßventilen dienende Kipphebelachse auch als Kraftstoffhochdruckspeicher mitzuverwenden, ist der ansonsten separat zur Kipphebelachse angeordnete und platzraubende Kraftstoffhochdruckspeicher überflüssig. Neben der Gewinnung eines zusätzlichen Bauraumes sind Gewicht und Kosten minimiert.Due to the special measures, namely to also use a rocker arm axis serving as a bearing for valve actuation means for actuating intake and exhaust valves as a high-pressure fuel accumulator, the space-consuming high-pressure fuel accumulator, which is otherwise arranged separately from the rocker arm axis, is superfluous. In addition to gaining additional installation space, weight and costs are minimized.
Außerdem ergeben sich wesentlich kürzere Einspritzleitungen von der Kipphebelachse zur jeweiligen Düse.In addition, there are much shorter injection lines from the rocker arm axis to the respective nozzle.
Der in der hohlen Kipphebelachse untergebrachte Kraftstoffhochdruckspeicher hat ein Speichervolumen, das etwa dem 300-fachen der maximalen Kraftstoffeinspritzmenge eines Zylinders entspricht. Durch dieses große Volumen sind auch auftretende Druckspitzen bzw. Druckschwankungen in zulässigen Grenzen zu halten.The high-pressure fuel accumulator, which is located in the hollow rocker arm axis, has a storage volume that corresponds approximately to 300 times the maximum fuel injection quantity of a cylinder. This large volume means that pressure peaks and pressure fluctuations that occur can be kept within permissible limits.
Aus der EP-A-0 259 106 ist eine Kipphebelachse mit einer Kammerung bekannt, in der in mindestens zwei ölführenden Kanälen einerseits Öl für hydraulische Ventilspielausgleichselemente und andererseits Öl für die Beaufschlagung von Koppelgliedern, die mit Ventilbetätigungsmitteln verbindbar sind, vorgesehen sind.From EP-A-0 259 106 a rocker arm axle with a chamber is known, in which oil for hydraulic valve lash adjusters and oil for acting on coupling elements which can be connected to valve actuation means are provided in at least two oil-carrying channels.
Eine förderliche Weiterbildung der Erfindung ergibt sich dadurch, daß zusätzlich zu der Versorgungsleitung als Kraftstoffhochdruckspeicher mindestens eine weitere Leitung in der Kipphebelachse angeordnet ist, die zur Schmierölversorgung der Kipphebel dient. Gegebenenfalls kann neben der kraftstofführenden Leitung und der schmierölführenden Leitung noch eine Steuerleitung für die Nockenwellenverstellung vorgesehen sein.A beneficial development of the invention results from the fact that, in addition to the supply line as a high-pressure fuel accumulator, at least one further line is arranged in the rocker arm axis and is used to supply the rocker arm with lubricating oil. If necessary, a control line for the camshaft adjustment can be provided in addition to the fuel-carrying line and the lubricating-oil-carrying line.
In den Unteransprüchen sind weitere vorteilhafte Ausgestaltungen der Erfindung angegeben.Further advantageous refinements of the invention are specified in the subclaims.
Der Gegenstand der Erfindung ist in der Zeichnung dargestellt und anhand von Ausführungsbeispielen im folgenden näher beschrieben. Es zeigen:
- Fig. 1
- einen Ventiltrieb mit einer hohlausgeführten Kipphebelachse zur Aufnahme eines Kraftstoffhochdruckspeichers,
- Fig. 2
- die Kipphebelachse (in vergrößerter Darstellung) mit integriertem Kraftstoffhochdruckspeicher
- Fig.3,4,5
- verschiedene Ausgestaltungen der Kipphebelachse mit getrennten Leitungen für den Kraftstoffhochdruckspeicher und für mindestens einen Ölstrom.
- Fig. 1
- a valve train with a hollow rocker arm axis for receiving a high-pressure fuel accumulator,
- Fig. 2
- the rocker arm axle (in an enlarged view) with integrated high-pressure fuel accumulator
- Fig. 3,4,5
- Different configurations of the rocker arm axis with separate lines for the high-pressure fuel accumulator and for at least one oil flow.
Eine Kraftstoffeinspritzanlage 1 für eine Dieselbrennkraftmaschine besteht im wesentlichen aus mindestens einer den Kraftstoff fördernden Hochdruckpumpe 2, aus einem Kraftstoffhochdruckspeicher als gemeinsame Versorgungsleitung 3 sowie aus magnetventilgesteuerten Düsen 4, deren Magnete 5 durch eine in Abhängigkeit von Betriebsparametern der Brennkraftmaschine arbeitende elektronische Steuereinheit 6 ansteuerbar sind.A fuel injection system 1 for a diesel internal combustion engine essentially consists of at least one high-
Eine von der Hochdruckpumpe 2 gemäß Fig. 1 wegführende Kraftstoffvorlaufleitung 7 ist an einer hohlausgeführten Kipphebelachse 8 angeschlossen. In der Kipphebelachse 8 verläuft die für die magnetventilgesteuerten Düsen 4 vorgesehene gemeinsame Versorgungsleitung 3, die als Kraftstoffhochdruckspeicher wirkt. Der Anschluß der Kraftstoffvorlaufleitung 7 befindet sich an einem freien Ende 9 der Kipphebelachse 8, auf der als Ventilbetätigungsmittel ausgebildete und durch Nocken 11 einer Nockenwelle 12 angetriebene Kipphebel 10 zur Betätigung von Einlaß- und Auslaßventilen 13, 14 drehbar gelagert sind. Auf der Kipphebelachse 8 sind zwischen den Einlaß- und Auslaßventilen 13,14 des jeweiligen Zylinders (nicht dargestellt) Anschlüsse 15 für Einspritzleitungen 16 vorgesehen, die zu den entsprechenden Düsen 4 führen. Mit 17 sind Kraftstoffrücklaufleitungen bezeichnet.A
Nach Fig. 2 weist die Kipphebelachse 8 eine kraftstofführende Bohrung auf, die die Versorgungsleitung 3 bildet, wobei das Speichervolumen der Versorgungsleitung etwa dem 300-fachen einer maximalen Kraftstoffeinspritzmenge entspricht. Dieses Verhältnis gilt auch bei den unterschiedlich ausgestalteten Ausführungsbeispielen gemäß den Fig. 3, 4 und 5, die neben der Versorgungsleitung 3 als Kraftstoffhochdruckspeicher noch eine ölführende Leitung enthalten. Die Volumen dieser Leitungen sind wesentlich kleiner, da sie keine Speicherfunktion haben, sondern zur Schmierölversorgung der Ventiltriebsteile dienen. Außerdem liegen hier übliche Drücke vor, die nur einen Bruchteil der Kraftstoffspeicherdrücke ausmachen. Der für Common-Rail-Systeme vorgesehene Kraftstoffspeicherdruck liegt bei ca. 1 500 bar.According to FIG. 2, the
In Fig. 3 ist die zusätzliche Bohrung in der Kipphebelachse 8 als ölführende Leitung für die Schmierölversorgung mit 18 bezeichnet, die durchmessermäßig wesentlich kleiner ist als die kraftstofführende Versorgungsleitung 3. Gegebenenfalls kann eine weitere Bohrung (strichpunktiert dargestellt) eingebracht sein, die ölführende Steuerleitung 19 für mit Kipphebeln 10 zusammenwirkende Koppelglieder ist.In Fig. 3, the additional hole in the
In Fig. 4 besteht die Kipphebelachse 8 aus einem Außenrohr 8', in das ein Einschubkörper 20 eingepreßt ist. Dieser Einschubkörper 20 enthält - ebenso wie die Ausführung gemäß Fig. 3 - die kraftstofführende Versorgungsleitung 3, die schmierölführende Leitung 18 und gegebenenfalls die ölführende Steuerleitung 19.In Fig. 4, the
In Fig. 5 ist die hohlausgeführte Kipphebelachse 8 mit einem in dem Hohlraum außermittig liegenden Längssteg 21 als Trennwand zur Bildung der kraftstofführenden Versorgungsleitung 3 und der schmierölführenden Leitung 18 versehen.5, the hollow
Auch bei dieser Ausführung kann gegebenenfalls eine weitere Kammerung für die Steuerleitung 19 vorgesehen sein, indem noch eine Zwischenwand in der ölführenden Leitung 18 eingesetzt ist.In this embodiment, too, a further chambering for the
Claims (6)
- A fuel injection system for a multi-cylinder internal combustion engine with valve actuation means pivoted on a rocker arm shaft for the actuation of inlet and outlet valves with a high pressure pump to deliver the fuel to a joint supply line designed for solenoid valve-controlled nozzles and acting as a high pressure fuel storage reservoir which is provided with a connection for an injection line leading to a nozzle for each cylinder,
characterised in that,
the high pressure fuel storage reservoir (3) comprises a hollow rocker arm shaft (8) with a fuel storage volume which is a multiple of the maximum amount of fuel to be injected. - A fuel injection system in accordance with Claim 1,
characterised in that,
provided in the hollow rocker arm shaft (8), in addition to a high pressure fuel storage reservoir (3), is at least one oil line (18;19) which runs separately to the reservoir. - A fuel injection system in accordance with Claim 1 or 2,
characterised in that,
the high pressure fuel storage reservoir (3) and at least one oil line (18;19) are formed by longitudinal holes in the rocker arm shaft (8). - A fuel injection system in accordance with Claim 1 or 2,
characterised in that,
the hollow rocker arm shaft (8) has an insert (20) provided with longitudinal holes, with one longitudinal hole forming the high pressure fuel storage reservoir (3) and at least one other longitudinal hole forming the oil line (18;19). - A fuel injection system in accordance with Claim 1,
characterised in that,
a connection (15) for an injection line (16) leading to a nozzle (4) is provided on the hollow rocker arm shaft (8) between the inlet and outlet valves (13, 14). - A fuel injection system in accordance with Claim 1,
characterised in that,
a fuel flow line (7) line from the high pressure pump (2) is connected to one end of the hollow rocker arm shaft (8).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4434783 | 1994-09-29 | ||
DE4434783A DE4434783C2 (en) | 1994-09-29 | 1994-09-29 | Fuel injection system for a multi-cylinder internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0704619A1 EP0704619A1 (en) | 1996-04-03 |
EP0704619B1 true EP0704619B1 (en) | 1997-01-02 |
Family
ID=6529493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95111427A Expired - Lifetime EP0704619B1 (en) | 1994-09-29 | 1995-07-20 | Fuel injection device for a multicylinder internal combustion engine |
Country Status (3)
Country | Link |
---|---|
US (1) | US5553592A (en) |
EP (1) | EP0704619B1 (en) |
DE (2) | DE4434783C2 (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5829414A (en) * | 1994-09-26 | 1998-11-03 | Honda Giken Kogyo Kabushiki Kaisha | Fuel supply system for multi-cylinder engine |
SE506131C2 (en) * | 1996-10-07 | 1997-11-10 | Scania Cv Ab | Rocker arm for propelling fuel injectors |
DE19750298A1 (en) * | 1997-11-13 | 1999-05-20 | Man Nutzfahrzeuge Ag | Internal combustion motor fuel injection for diesel motors in common rail system |
GB9914790D0 (en) * | 1999-06-25 | 1999-08-25 | Lucas Ind Plc | Fuel supply system |
DE19945316A1 (en) * | 1999-09-22 | 2001-04-05 | Bosch Gmbh Robert | High pressure fuel accumulator |
DE19945436C1 (en) * | 1999-09-22 | 2001-01-18 | Siemens Ag | Fuel injection system with common rail |
US6966301B2 (en) | 2002-05-03 | 2005-11-22 | Delphi Technologies, Inc. | Accumulator fuel system |
EP1692388A1 (en) * | 2003-11-04 | 2006-08-23 | Delphi Technologies, Inc. | Accumulator fuel system |
DE102005026600B4 (en) * | 2005-06-09 | 2013-08-22 | Man Diesel & Turbo Se | Internal combustion engine |
DE102018126757A1 (en) * | 2018-10-26 | 2020-04-30 | Man Truck & Bus Se | Valve train for at least one lift valve of an internal combustion engine |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3125078A (en) * | 1964-03-17 | Fuel supply system | ||
US2104729A (en) * | 1928-12-29 | 1938-01-11 | Auto Research Corp | Automatic centralized lubricating installation |
CH225034A (en) * | 1941-06-23 | 1942-12-31 | Sulzer Ag | Reversing device on internal combustion engines. |
US2955582A (en) * | 1957-06-21 | 1960-10-11 | Gen Motors Corp | Timed fuel injection system |
GB1469480A (en) * | 1974-08-07 | 1977-04-06 | Ciba Geigy Ag | Photographic emulsion |
JPS5289706A (en) * | 1976-01-21 | 1977-07-27 | Toyota Motor Corp | Lean mixture combustion type internal combustion engine |
JPS6017927B2 (en) * | 1977-03-22 | 1985-05-08 | トヨタ自動車株式会社 | How to lubricate valves, locks, and arms |
SE458048B (en) * | 1983-06-20 | 1989-02-20 | Yanmar Diesel Engine Co | VIP-PARK CHAMBER DEVICE IN A DIESEL ENGINE |
JPS62159762A (en) * | 1986-01-08 | 1987-07-15 | Honda Motor Co Ltd | Diesel engine |
CA1308977C (en) * | 1986-08-27 | 1992-10-20 | Tsuneo Konno | Valve operating device for internal combustion engine |
JP3033214B2 (en) * | 1991-02-27 | 2000-04-17 | 株式会社デンソー | Accumulation type fuel supply method and apparatus by a plurality of fuel pumping means, and abnormality determination apparatus in equipment having a plurality of fluid pumping means |
SE468719B (en) * | 1991-07-02 | 1993-03-08 | Saab Scania Ab | FIRE PIPE ARRANGEMENT ARRANGEMENTS IN THE COMBUSTION ENGINE |
US5237976A (en) * | 1991-10-21 | 1993-08-24 | Caterpillar Inc. | Engine combustion system |
US5237968A (en) * | 1992-11-04 | 1993-08-24 | Caterpillar Inc. | Apparatus for adjustably controlling valve movement and fuel injection |
DE4404378C2 (en) * | 1993-02-20 | 2001-03-08 | Volkswagen Ag | Valve arrangement with a plurality of parallel-axis lift valves and a common actuation device |
US5297523A (en) * | 1993-02-26 | 1994-03-29 | Caterpillar Inc. | Tuned actuating fluid inlet manifold for a hydraulically-actuated fuel injection system |
US5325834A (en) * | 1993-08-03 | 1994-07-05 | Caterpillar Inc. | Method of and conversion kit for converting an engine to hydraulically-actuated fuel injection system |
DE4331504C1 (en) * | 1993-09-16 | 1995-02-16 | Daimler Benz Ag | Method for producing a hollow rocker arm shaft designed for internal combustion engines |
-
1994
- 1994-09-29 DE DE4434783A patent/DE4434783C2/en not_active Expired - Fee Related
-
1995
- 1995-07-20 DE DE59500080T patent/DE59500080D1/en not_active Expired - Lifetime
- 1995-07-20 EP EP95111427A patent/EP0704619B1/en not_active Expired - Lifetime
- 1995-08-08 US US08/512,536 patent/US5553592A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE4434783C2 (en) | 1998-04-09 |
DE59500080D1 (en) | 1997-02-13 |
DE4434783A1 (en) | 1996-04-11 |
US5553592A (en) | 1996-09-10 |
EP0704619A1 (en) | 1996-04-03 |
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