EP0166931B1 - Régulateur de vitesse pour pompes d'injection de combustible - Google Patents
Régulateur de vitesse pour pompes d'injection de combustible Download PDFInfo
- Publication number
- EP0166931B1 EP0166931B1 EP85105970A EP85105970A EP0166931B1 EP 0166931 B1 EP0166931 B1 EP 0166931B1 EP 85105970 A EP85105970 A EP 85105970A EP 85105970 A EP85105970 A EP 85105970A EP 0166931 B1 EP0166931 B1 EP 0166931B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- spring
- lever
- speed
- speed governor
- piston
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/04—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors
- F02D1/045—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered by mechanical means dependent on engine speed, e.g. using centrifugal governors characterised by arrangement of springs or weights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D1/00—Controlling fuel-injection pumps, e.g. of high pressure injection type
- F02D1/02—Controlling fuel-injection pumps, e.g. of high pressure injection type not restricted to adjustment of injection timing, e.g. varying amount of fuel delivered
- F02D1/08—Transmission of control impulse to pump control, e.g. with power drive or power assistance
- F02D1/10—Transmission of control impulse to pump control, e.g. with power drive or power assistance mechanical
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
- F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
- F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
- F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
- F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
- F02M41/125—Variably-timed valves controlling fuel passages
- F02M41/126—Variably-timed valves controlling fuel passages valves being mechanically or electrically adjustable sleeves slidably mounted on rotary piston
Definitions
- the invention relates to a fuel injection pump according to the preamble of the main claim.
- a known speed controller of this type (used in the Bosch distributor injection pump type VE) has only one leaf spring as an intermediate spring in one version, which has the function of a so-called starting spring that generates a starting quantity, and in another version a combination of this starting spring with a coil spring, which regulates the idle speed.
- the starting spring is as soft as possible and only has the task of pushing the second lever and thus the injection quantity control element into a position for additional starting quantity which is above the maximum full load injection quantity in the starting position
- the idling spring has the task in the idling position of the controller the second lever and thus keeping the injection quantity control member in a position corresponding to the balance of the forces (spring, speed signal generator) as counterforce to the speed signal generator which develops only small forces at idling speeds.
- the idle spring Only when the idle speed is exceeded is the idle spring pushed together, so that in the upper idle speed range the two levers are frictionally engaged. However, the idle spring is pushed together at idle speeds and sufficient load via the first lever as far as a stop determining the initial position of the first lever allows this.
- a single helical spring or leaf spring serving as a starting and idling spring can also serve as an intermediate spring, in which it is assigned a first area which serves to generate a starting additional quantity and then a somewhat harder area serving to regulate the idling speed.
- the actual consumption per engine cylinder is known to differ in contrast to the injection quantity metered by the injection pump per engine cylinder, which is the same for all engine cylinders when the speed controller is in a certain position.
- the spread of the amount that can be consumed by the engine cylinder can be 30% of the average injection amount when idling and is therefore particularly disadvantageous there. If, for example, the average idling quantity is 5 mm 3 , the scatter may well be 2 mm 3 .
- the scattering of the braking and shocks that occur during combustion in the engine result in corresponding power surges from the speed signal transmitter to the second lever, which can be absorbed by a stiff spring in such a way that jerking or engine shaking during idling is prevented.
- a rigid idle spring has a high P-degree, which can be 40% when idle. At idle speeds of 600 rpm. this is already 240 rpm. This high P degree leads to an unstable running of the motors, the so-called sawing. This sawing can in turn be counteracted by a soft spring with a correspondingly low P-degree, namely a spring in which large distances (control paths) are covered even with relatively small changes in force of the speed signal transmitter. Due to the low P-grade of soft springs, adding or subtracting the small quantity changes caused by the scattering is largely absorbed as an influence on the speed, so that a low P-grade is achieved (low sawing, largely constant speed) but jerky or shaking the motor can take place. In the known speed controllers, a relatively high P-grade is therefore taken in order to avoid the unpleasant jerking, especially in the case of passenger car diesel engines.
- a fuel injection pump in which an arbitrarily operated adjusting lever is provided which changes the regulating spring tension and which is used for Input of the speed or torque request via a drag link consisting of two mutually opposite springs, with which the fuel quantity adjusting element of the fuel injection pump is coupled.
- the volume adjustment element can be operated via a control lever, on which a speed-dependent force counter to the force of the control spring set by the adjustment lever and, if applicable, the adjustment spring used in series, as well as the idle spring which is fixed in parallel to the control spring, regardless of the position of the adjustment lever in the Regulating case can be adjusted.
- the adjustment of the fuel quantity adjusting member caused by the adjusting lever via the drag member in the event of non-regulation is delayed by an attenuator connected between the latter and the regulator lever.
- An intermediate lever can be provided between the control spring and the adjustment spring.
- This device is very complex and, since the idle spring abuts stationary on the one hand and the towing element lies in series with a pre-tensioned control spring and the damping element is provided parallel to both, there is no possibility of selecting the spring stiffness in different operating situations in the sense of the relationships discussed above.
- the speed controller for fuel injection pumps according to the invention with the characterizing features of the main claim has the advantage that a controller with resilient feedback is created, in which the short shocks caused by the scattering of the engine cylinder combustion are absorbed by a stiff spring, which the desired high P- Degree corresponds and that a delayed action of a soft spring for a constant speed as possible a lower P-degree can be achieved.
- the driving member works with two mutually counteracting damping springs, between which the point of attack of the second lever is clamped in a floating manner.
- Both damping springs are designed to be relatively stiff, at least stiffer than the intermediate spring.
- fuel is fed from a fuel tank 10 via a prefeed pump 11 and a fuel filter 12 to a distributor injection pump 13.
- the pump housing of this pump is broken open so far that the elements of the speed controller are visible.
- the load input which takes place arbitrarily in the motor vehicle, for example, is carried out via an adjusting lever 14, the pivoting movement of which is transmitted via an adjusting shaft 15 guided in the pump housing to a driving lever 16, on which a control spring 17 engages on the one hand, which on the other hand is connected to a regulator lever arrangement 18.
- an adjusting sleeve 19 of a speed signal transmitter also acts on the control lever arrangement 18, which is articulated by flyweights 20 which are driven at a motor-synchronous speed.
- the force acting on the control lever arrangement 18 from the sleeve 19 thus changes the speed according to a quadratic function.
- the regulator lever arrangement 18 displaces a control slide 21 determining the injection quantity on a pump and distributor piston 22.
- the fuel is fed from the injection pump via a distributor groove 23 to injection nozzles 24, the pump piston 22 executing as many pressure and suction strokes per revolution as injection nozzles 24 or engine cylinders are available.
- injection nozzles 24 or engine cylinders are available.
- all engine cylinders receive the same injection quantity.
- the controller reduces the injection quantity per engine cylinder with the same load specification as soon as the speed drops.
- a regulator lever arrangement 18 is shown with which this bucking can be largely avoided.
- This regulator lever arrangement 18 has an adjusting lever 28 which is pivotally mounted in the housing at 29 and carries an axis 30. Swiveling around point 29 causes the axis 30 to be correspondingly displaced.
- This adjusting lever 28 is set to adjust the position of the axis 30 and has no influence on the speed control.
- the control spring 17 shown in FIG. 2 only by an arrow indicating the direction of force acts on a tensioning lever 31 which is pivotably mounted on the axis 30. Also on the axis 30, a start lever 32 is pivotally mounted, on which a head 33 is provided for articulating the control slide 21 and on which the speed signal transmitter 19 engages in the direction of force represented by the arrow.
- An intermediate spring assembly 35 is arranged between the tensioning lever 31 (1st lever) and the starting lever 32 (2nd lever), by means of which the relative pivot position of the two levers relative to one another as a function of the forces 17 and 19 and thereby the fuel injection quantity are determined in a certain speed range becomes.
- This intermediate spring assembly 35 consists of three springs of a first softer spring 36 and two harder stiffer springs 37.
- the intermediate spring 36 is arranged in a cylinder 38 which is closed on one side and is supported on the one hand on the closing end wall and on the other hand on a piston 39 which is axially displaceable in the cylinder 38 .
- the interior of the cylinder 36 is connected to the outside by a throttle bore 40 provided in the end wall.
- a pin 41 is provided on the piston 39, on which the two stiffer intermediate springs 37 are guided, one of which is supported on the piston 39 and the other on a locking ring 42 which is arranged on the pin 41.
- the end 43 of the start lever 32 is provided in a floating manner by the springs 37.
- the stiff springs 37 absorbs these forces, the stiff spring causing a high P-degree.
- the driving element consisting of cylinder 38, piston 39 with pin 41 acts like a rigid system, or spring 36 acts as an infinitely stiff spring, since the volume enclosed in the cylinder acts inelastic due to the throttling action of throttle 40 and only with a throttle cross section according to the time available, the spring 36 can come into effect.
- the entire spring assembly 35 acts like a flexible return.
- the spring 37 acts in the short-term behavior
- the spring 36 acts in the long-term behavior.
- the injection quantity Q is plotted on the ordinate and the rotational speed n on the abscissa in an injection quantity / speed diagram.
- the characteristic curve indicates the full load, with b being the starting additional quantity.
- c is the regulation process when the maximum speed is reached.
- This diagram also shows the transition from idle volume to larger quantities when the load is taken up. It is significant that the controller has a very flat idling characteristic d, since the actual idling spring 36 is relatively soft and causes a low P-degree. This avoids sawing the engine, ie the engine runs at a largely constant idling speed. As soon as a load change is made, the relatively stiff retaining springs 37 cause a rapid increase in the injection quantity with a slight change in speed, in accordance with the characteristic curves e.
- the problem with idling speed control namely motor jerking and sawing
- the invention can accordingly be transferred to speed controllers for pumps of stationary motors or to corresponding problems in intermediate speed ranges. It is important that the speed controller according to the invention cause short-term changes in the force of parameters such as load or speed to cause a high P-degree, whereas longer-term parameter changes cause a low P-degree of the controller.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- High-Pressure Fuel Injection Pump Control (AREA)
Claims (4)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19843424268 DE3424268A1 (de) | 1984-06-30 | 1984-06-30 | Drehzahlregler fuer kraftstoffeinspritzpumpen |
DE3424268 | 1984-06-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0166931A2 EP0166931A2 (fr) | 1986-01-08 |
EP0166931A3 EP0166931A3 (en) | 1987-02-25 |
EP0166931B1 true EP0166931B1 (fr) | 1988-08-31 |
Family
ID=6239614
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP85105970A Expired EP0166931B1 (fr) | 1984-06-30 | 1985-05-15 | Régulateur de vitesse pour pompes d'injection de combustible |
Country Status (4)
Country | Link |
---|---|
US (1) | US4649879A (fr) |
EP (1) | EP0166931B1 (fr) |
JP (1) | JPS6119942A (fr) |
DE (2) | DE3424268A1 (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3720466A1 (de) * | 1987-06-20 | 1988-12-29 | Bosch Gmbh Robert | Einrichtung zur verbesserung des dynamischen verhaltens des reglers einer verteilereinspritzpumpe |
DE4300015A1 (de) * | 1993-01-02 | 1994-07-07 | Bosch Gmbh Robert | Kraftstoffeinspritzpumpe für Brennkraftmaschinen |
DE9408125U1 (de) * | 1994-05-17 | 1994-07-21 | Kloeckner Humboldt Deutz Ag | Einspritzvorrichtung für eine Brennkraftmaschine |
JP4303536B2 (ja) * | 2003-08-19 | 2009-07-29 | ヤンマー株式会社 | ガバナ装置 |
US7900739B2 (en) * | 2006-12-12 | 2011-03-08 | Cnh America Llc | Control system for a vehicle system with a continously variable transmission |
DE102009046387A1 (de) * | 2009-11-04 | 2011-05-05 | Robert Bosch Gmbh | Pedalweggeber und Pedaleinheit |
CN106968813A (zh) * | 2017-02-28 | 2017-07-21 | 南京威孚金宁有限公司 | 一种ve分配泵调速系统及其调速方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1815595C3 (de) * | 1965-02-05 | 1975-09-25 | Kloeckner-Humboldt-Deutz Ag, 5000 Koeln | Direkt wirkender FKehgewichtsdrehzahlregler für Kraftmaschinen |
GB1231010A (fr) * | 1967-04-12 | 1971-05-05 | ||
DE2349663A1 (de) * | 1973-10-03 | 1975-04-10 | Bosch Gmbh Robert | Drehzahlregler einer kraftstoffeinspritzpumpe |
DE2349692C2 (de) * | 1973-10-03 | 1985-04-04 | Robert Bosch Gmbh, 7000 Stuttgart | Drehzahlregler einer Kraftstoffeinspritzpumpe |
DE2402374C2 (de) * | 1974-01-18 | 1983-05-26 | Robert Bosch Gmbh, 7000 Stuttgart | Drehzahlregler für Kraftstoffeinspritzpumpen von Brennkraftmaschinen |
JPS544450B2 (fr) * | 1974-04-23 | 1979-03-07 | ||
GB2090430B (en) * | 1980-12-31 | 1984-06-13 | Lucas Industries Ltd | Governor system |
JPS57168026A (en) * | 1981-04-09 | 1982-10-16 | Nissan Motor Co Ltd | Control device of vibration in diesel engine |
-
1984
- 1984-06-30 DE DE19843424268 patent/DE3424268A1/de not_active Withdrawn
-
1985
- 1985-05-15 DE DE8585105970T patent/DE3564724D1/de not_active Expired
- 1985-05-15 EP EP85105970A patent/EP0166931B1/fr not_active Expired
- 1985-05-20 US US06/735,923 patent/US4649879A/en not_active Expired - Fee Related
- 1985-07-01 JP JP60142678A patent/JPS6119942A/ja active Granted
Also Published As
Publication number | Publication date |
---|---|
DE3564724D1 (en) | 1988-10-06 |
US4649879A (en) | 1987-03-17 |
JPH0577859B2 (fr) | 1993-10-27 |
EP0166931A2 (fr) | 1986-01-08 |
JPS6119942A (ja) | 1986-01-28 |
EP0166931A3 (en) | 1987-02-25 |
DE3424268A1 (de) | 1986-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2349692C2 (de) | Drehzahlregler einer Kraftstoffeinspritzpumpe | |
DE2900198A1 (de) | Fliehkraftdrehzahlregler fuer einspritzbrennkraftmaschinen, insbesondere leerlauf-enddrehzahlregler fuer fahrzeug-dieselmotoren | |
EP0166931B1 (fr) | Régulateur de vitesse pour pompes d'injection de combustible | |
DE2656261C2 (de) | Fliehkraftdrehzahlregler für Einspritzbrennkraftmaschinen | |
DE2629620A1 (de) | Fliesskraftdrehzahlregler fuer einspritzbrennkraftmaschinen | |
EP0168613B1 (fr) | Régulateur de vitesse pour pompe à injection de combustible | |
DE3145233A1 (de) | Reglersystem | |
EP0319707A2 (fr) | Pompe d'injection de combustible pour moteurs à combustion interne, en particulier pour moteurs Diesel | |
DE3630871C2 (fr) | ||
DE4129837C2 (de) | Drehzahlregler für Kraftstoffeinspritzpumpen von Brennkraftmaschinen | |
DE2855889A1 (de) | Fliehkraftdrehzahlregler fuer einspritzbrennkraftmaschinen, insbesondere leerlauf-enddrehzahlregler fuer fahrzeugdieselmotoren | |
DE3831788C2 (fr) | ||
EP0158846B1 (fr) | Régulateur centrifuge pour moteurs à combustion interne à injection de combustible | |
EP0162287A2 (fr) | Pompe d'injection de carburant pour moteurs à combustion interne | |
DE2838919A1 (de) | Fliehkraftdrehzahlregler fuer einspritzbrennkraftmaschinen | |
EP0515816B1 (fr) | Pompe d'injection de combustible pour moteurs à combustion interne | |
DE3632539C2 (de) | Kraftstoffeinspritzpumpe für Kraftfahrzeug-Brennkraftmaschinen | |
DE864782C (de) | Regler fuer Einspritzbrennkraftmaschinen | |
DE3632538A1 (de) | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen | |
DE3418174A1 (de) | Kraftstoffeinspritzpumpe fuer brennkraftmaschinen | |
EP0624720B1 (fr) | Pompe d'injection de combustible pour moteurs à combustion interne | |
EP0296358B1 (fr) | Dispositif améliorant le comportement dynamique d'un régulateur de pompe à injection distributrice | |
EP0766782B1 (fr) | Pompe d'injection de carburant pour moteurs a combustion interne | |
EP0208898B1 (fr) | Régulateur de vitesse de rotation pour pompes à injection de combustible | |
EP0522359B1 (fr) | Pompe d'injection de carburant pour moteurs à combustion interne |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19850515 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE FR GB |
|
17Q | First examination report despatched |
Effective date: 19870824 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) | ||
REF | Corresponds to: |
Ref document number: 3564724 Country of ref document: DE Date of ref document: 19881006 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20020425 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20020625 Year of fee payment: 18 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20020823 Year of fee payment: 18 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20031202 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20030515 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20040130 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |