EP0493399A1 - Fuel injection pump for internal combustion engines. - Google Patents
Fuel injection pump for internal combustion engines.Info
- Publication number
- EP0493399A1 EP0493399A1 EP90912640A EP90912640A EP0493399A1 EP 0493399 A1 EP0493399 A1 EP 0493399A1 EP 90912640 A EP90912640 A EP 90912640A EP 90912640 A EP90912640 A EP 90912640A EP 0493399 A1 EP0493399 A1 EP 0493399A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lever
- adjusting
- fuel injection
- injection pump
- stop
- 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.)
- Granted
Links
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
- 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
-
- 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
- F02M59/447—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 means specially adapted to limit fuel delivery or to supply excess of fuel temporarily, e.g. for starting of the engine
Definitions
- the invention relates to a fuel injection pump for internal combustion engines of the type defined in the preamble of claim 1.
- the stop lever which determines the starting position of the starting lever is adjusted as a function of the temperature of the internal combustion engine for this reason, so that the starting lever becomes smaller as the temperature increases
- Fuel injection quantities shifted According to the The position of the start lever shifts the delivery quantity adjustment element, which is displaceable on the pump piston of the fuel injection pump and which determines the size of the pump piston stroke and thus the metered fuel injection quantity.
- the adjustment of the delivery quantity adjustment element which is displaceable on the pump piston of the fuel injection pump and which determines the size of the pump piston stroke and thus the metered fuel injection quantity.
- the stop lever is made by an expansion agent that projects into a space through which the cooling water of the internal combustion engine flows and engages the stop lever via a Bowden cable.
- the stop lever can only be adjusted to a position which corresponds to the full-load position, but not below it. This means that the warm start is not entirely smoke-free.
- such an adjustment device is technically relatively complex and does not require inconsiderable additional costs during manufacture.
- the fuel injection pump according to the invention with the characterizing features of claim 1 has the advantage that the different amounts of fuel required for hot and cold starts can be set with extremely little effort. For this purpose, only a gear connection between the adjusting lever and the stop lever is required such that when the adjusting lever actuated by the accelerator pedal is pivoted, the stop lever is transferred from its one end position into the other. Depending on the starting conditions (cold or warm start), the driver has to operate the accelerator pedal or not, so that the start lever assumes the correct end position.
- the stop lever is coupled to the adjusting lever in such a way that it assumes the first end position when the adjusting lever is not actuated, then a logical handling for the driver is achieved when the internal combustion engine starts: if the
- the coupling between the stop lever and the adjusting lever is performed by a
- Actuating lever which is non-rotatably seated on the pivot shaft of the stop lever and is driven by the adjusting lever.
- the two end positions of the stop lever are fixed by fixed stops in the swivel path of the adjusting lever. This has the advantage that the outside of the
- Adjusting lever lying in the pump housing can be coupled in a simple manner without intervention in the pump housing with the stop lever arranged in the pump housing.
- the control lever is also outside the pump housing.
- the adjusting lever is articulated on the adjusting lever via a spring-buffered linkage.
- Adjustment path of the adjustment lever can be set. If the accelerator pedal is actuated, irrespective of the pedal travel, the actuating lever lies against the stop defining the second end position after a minimum pivoting travel of the adjusting lever and maintains this position even during the further pivoting of the adjusting lever.
- the two stops of the adjusting lever are formed on adjusting screws so that the end positions can be set with high precision.
- 1 is a partial side view of a fuel injection pump
- FIG. 2 is a top view of the fuel injection pump in FIG. 1.
- the pump housing is indicated by dash-dotted lines and is designated by 10.
- the internal structure of the fuel injection pump is known and described for example in DE 28 44 910 AI.
- a delivery quantity adjustment member 11 which sits axially displaceably on a pump piston 12 and closes a control bore in the pump piston 12, around a fixed pivot axis 14 pivotable, two-armed start lever 13, which acts on the delivery quantity adjustment element 11 for displacement thereof on the pump piston 12, a one-armed clamping lever 15 which can be pivoted about the pivot axis 14 and on which the start lever 13 is supported by a start spring 16, and a stop lever 17 which rotates on one in the pump housing 10 mounted shaft 18.
- the tensioning lever 15 is connected via a spring 35 to a spring plate 19 of a control linkage 34, which
- the tensioning lever 15 is connected via an idling and control spring and the control linkage 34 to an adjusting lever 20 which is rotatably mounted on the outside of the pump housing 10 at points 21 and is arbitrarily actuated in the direction of arrow 22 (FIG 2) can be pivoted.
- the adjusting lever 20 assumes its position shown in FIGS. 1 and 2. Not drawn is also nd over these and the tension levers 15 of the centrifugal speed controller, which U is present at the start lever 13, a the
- the delivery rate adjustment member 11 determines in a known manner the amount of fuel injected by the fuel injection pump into the cylinders of the internal combustion engine in that after a stroke of the pump piston which is dependent on the position of the delivery rate adjustment member, the control bore emerges from the delivery rate adjustment member 11 and thus a return flow for the still in the pump work space fuel is released.
- an adjusting lever 23 is connected in a rotationally fixed manner outside the pump housing 10 and is coupled to the adjusting lever 20 via a spring-buffered linkage 24.
- This consists of a rod 25 which is articulated eccentrically on the adjusting lever 20 and a helical compression spring 26 which surrounds the rod 25 concentrically.
- the rod 25 projects through a bore 27 in a bracket 28 rigidly connected to the adjusting lever 23.
- the one on a ring shoulder 29 on the rod 25 supported helical compression spring 26 engages the bracket 28 and presses it against an articulated support ring 30 which is attached to the rod 25.
- the pivot path of the actuating lever 23 is limited by two stops 31, 32, each of which is seated on adjusting screws 33, 34 and can thus be positioned with high precision after the fuel injection pump has been assembled.
- the driver When the cold internal combustion engine is started, the driver has to actuate the accelerator pedal, as a result of which the adjusting lever 20 is pivoted and the latter applies the adjusting lever 23 to the second stop 32. Via the start lever 13, the delivery quantity adjustment member 11 is shifted and the quantity of fuel required for the cold start of the internal combustion engine is set.
- the driver When starting the warm internal combustion engine, the driver must not operate the accelerator pedal.
- the adjusting lever 20 thus assumes its basic position shown in FIGS. 1 and 2, and the adjusting lever 23 rests on the first stop 31.
- the stop lever 17 in its first end position effects a corresponding displacement position of the delivery quantity adjusting member 11 on the pump piston 12 via the starting lever 13
- the reduced fuel quantity required for the warm start is now predetermined by the position of the delivery quantity adjusting element 11.
Abstract
La pompe d'injection décrite comporte un régulateur de débit (11) réglable par l'intermédiaire d'une manette de démarrage (13) ainsi que d'une manette d'avance (20) et d'une manette de tension (15). La manette de démarrage (13) s'appuie, au moyen d'un ressort de démarrage (16), sur la manette de tension (15) et repose sur une manette de butée (17) à l'arrêt du moteur. Pour le réglage d'une quantité optimale d'injection de carburant lors du lancement du moteur, qui doit être réduite lors d'un démarrage à chaud par rapport à un démarrage à froid, la manette de butée (17) est accouplée de force vers la manette d'avance (20) de telle manière qu'elle passe, par un mouvement de pivotement de cette dernière, d'une première position finale à une deuxième, les positions finales étant déterminées de sorte que la manette de butée (17) impose à la manette de démarrage une position qui, dans la première position finale, règle, sur le régulateur de débit (11), la quantité de carburant nécessaire à un démarrage à chaud, et dans la deuxième position finale, la quantité de carburant nécessaire à un démarrage à froid.The injection pump described comprises a flow regulator (11) adjustable by means of a starting lever (13) as well as an advance lever (20) and a tension lever (15) . The start lever (13) is supported by a starting spring (16) on the tension lever (15) and rests on a stop lever (17) when the engine is stopped. For setting an optimum amount of fuel injection when cranking the engine, which should be reduced during a warm start compared to a cold start, the stop lever (17) is force-coupled towards the advance lever (20) in such a way that it passes, by a pivoting movement of the latter, from a first final position to a second, the final positions being determined so that the stop lever (17) imposes on the starting lever a position which, in the first final position, regulates, on the flow regulator (11), the quantity of fuel required for a warm start, and in the second final position, the quantity of fuel required at a cold start.
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3931603 | 1989-09-22 | ||
DE3931603A DE3931603A1 (en) | 1989-09-22 | 1989-09-22 | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
PCT/DE1990/000661 WO1991004409A1 (en) | 1989-09-22 | 1990-08-31 | Fuel injection pump for internal combustion engines |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0493399A1 true EP0493399A1 (en) | 1992-07-08 |
EP0493399B1 EP0493399B1 (en) | 1994-08-03 |
Family
ID=6389941
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90912640A Expired - Lifetime EP0493399B1 (en) | 1989-09-22 | 1990-08-31 | Fuel injection pump for internal combustion engines |
Country Status (8)
Country | Link |
---|---|
US (1) | US5193505A (en) |
EP (1) | EP0493399B1 (en) |
JP (1) | JP3065344B2 (en) |
KR (1) | KR920704004A (en) |
DE (2) | DE3931603A1 (en) |
ES (1) | ES2057584T3 (en) |
PL (1) | PL286945A1 (en) |
WO (1) | WO1991004409A1 (en) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3340202B2 (en) * | 1993-08-13 | 2002-11-05 | 株式会社小松製作所 | Start control method for diesel engine |
KR0125898B1 (en) * | 1995-08-30 | 1997-12-18 | 전성원 | Wireless control system for throless valve |
GB0027686D0 (en) * | 2000-11-13 | 2000-12-27 | Delphi Tech Inc | Governor |
JP4213882B2 (en) * | 2001-07-16 | 2009-01-21 | ヤンマー株式会社 | Fuel injection amount control device |
US9371790B2 (en) * | 2012-01-19 | 2016-06-21 | Ford Global Technologies, Llc | Methods and systems for controlling fuel injection |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1358640A (en) * | 1963-03-08 | 1964-04-17 | Kugelfischer G Schaefer & Co | Device for activating the choke regulator in injection pumps for injection combustion machines |
DE2003927A1 (en) * | 1970-01-29 | 1971-08-12 | Bosch Gmbh Robert | Control device for the fuel-air mixture in internal combustion engines working with external ignition |
US3640259A (en) * | 1970-06-12 | 1972-02-08 | Alfa Romeo Spa | Regulator for gasoline injection pumps |
DE2259428C3 (en) * | 1972-12-05 | 1978-08-03 | Robert Bosch Gmbh, 7000 Stuttgart | Centrifugal governor for internal combustion engines |
GB1459754A (en) * | 1973-02-03 | 1976-12-31 | Cav Ltd | Liquid fuel pumping appataus |
US3865091A (en) * | 1974-02-19 | 1975-02-11 | Ambac Ind | Excess fuel starting device for diesel engines |
US4109629A (en) * | 1974-04-01 | 1978-08-29 | C.A.V. Limited | Fuel injection pumping apparatus |
DE2552991A1 (en) * | 1975-11-26 | 1977-06-08 | Daimler Benz Ag | SPEED CONTROLLER FOR AN INJECTION PUMP ON AIR-COMPRESSING INJECTION COMBUSTION MACHINES |
DE2639961A1 (en) * | 1976-09-04 | 1978-03-09 | Bosch Gmbh Robert | SPEED CONTROLLER FOR INJECTION COMBUSTION ENGINES |
DE2644994A1 (en) * | 1976-10-06 | 1978-04-13 | Bosch Gmbh Robert | SPEED CONTROLLER FOR INJECTION COMBUSTION ENGINES |
DE2802607A1 (en) * | 1978-01-21 | 1979-07-26 | Bosch Gmbh Robert | SPEED REGULATOR FOR FUEL INJECTION PUMPS |
DE2802888A1 (en) * | 1978-01-24 | 1979-07-26 | Bosch Gmbh Robert | SPEED REGULATOR FOR FUEL INJECTION PUMPS WITH ADJUSTMENT OF THE INJECTION QUANTITY |
DE2825523A1 (en) * | 1978-06-10 | 1979-12-20 | Bosch Gmbh Robert | SPEED CONTROLLER FOR INJECTION COMBUSTION ENGINES |
DE2844910A1 (en) * | 1978-10-14 | 1980-04-30 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
US4282844A (en) * | 1979-02-17 | 1981-08-11 | Lucas Industries Limited | Fuel pumping apparatus |
DE2909559A1 (en) * | 1979-03-10 | 1980-09-11 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
DE2942493A1 (en) * | 1979-10-20 | 1981-04-30 | Robert Bosch Gmbh, 7000 Stuttgart | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
JPS6155138U (en) * | 1984-05-02 | 1986-04-14 | ||
US4656980A (en) * | 1984-07-11 | 1987-04-14 | Diesel Kiki Co., Ltd. | Centrifugal governor for internal combustion engines |
JPS61132730A (en) * | 1984-11-30 | 1986-06-20 | Yanmar Diesel Engine Co Ltd | Governor of fuel injection pump |
DE3804958A1 (en) * | 1988-02-18 | 1989-08-31 | Kloeckner Humboldt Deutz Ag | CONTROL DEVICE FOR INJECTION PUMPS OF DIESEL INTERNAL COMBUSTION ENGINES, WHICH ADAPTS THE INJECTION AMOUNT TO CHARGE PRESSURE |
-
1989
- 1989-09-22 DE DE3931603A patent/DE3931603A1/en not_active Withdrawn
-
1990
- 1990-08-31 DE DE59006723T patent/DE59006723D1/en not_active Expired - Fee Related
- 1990-08-31 US US07/838,262 patent/US5193505A/en not_active Expired - Fee Related
- 1990-08-31 ES ES90912640T patent/ES2057584T3/en not_active Expired - Lifetime
- 1990-08-31 KR KR1019920700094A patent/KR920704004A/en not_active Application Discontinuation
- 1990-08-31 EP EP90912640A patent/EP0493399B1/en not_active Expired - Lifetime
- 1990-08-31 JP JP2511706A patent/JP3065344B2/en not_active Expired - Fee Related
- 1990-08-31 WO PCT/DE1990/000661 patent/WO1991004409A1/en active IP Right Grant
- 1990-09-19 PL PL28694590A patent/PL286945A1/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO9104409A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL286945A1 (en) | 1991-09-23 |
DE59006723D1 (en) | 1994-09-08 |
EP0493399B1 (en) | 1994-08-03 |
JPH05502078A (en) | 1993-04-15 |
WO1991004409A1 (en) | 1991-04-04 |
KR920704004A (en) | 1992-12-18 |
US5193505A (en) | 1993-03-16 |
JP3065344B2 (en) | 2000-07-17 |
ES2057584T3 (en) | 1994-10-16 |
DE3931603A1 (en) | 1991-04-04 |
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