Claims
- 1. A controlling device for a fuel-quantity adjustment element of a fuel injection pump including an adjusting lever pivotable around a shaft, said adjusting lever being coupled with a fuel-quantity adjusting element, a drag lever pivotable around said shaft of the adjusting lever, said drag lever communicates with said adjusting lever by way of a coupling element, an adjustable governor spring assembly arranged to act on said drag lever, a stop for stopping said drag lever, further including a device for generating rpm-dependent force transmittable to the drag lever by means of an actuating element thereof and counter to said governor spring assembly, whereby the drag lever and the adjusting lever are coupled for movement together at least at the end of each relative movement effected by the actuating element; said actuating element acts directly upon said drag lever and the adjusting lever during deflection by way of a predetermined relative adjustment distance a between said drag lever and said adjusting lever for adjustment by the actuating element, at least one spring arranged between said adjusting lever and a fixed support, said at least one spring acts on said adjusting lever to force said adjusting lever into contact with an adjustable stop which is adjustable in dependence from the operating parameters of the combustion engine.
- 2. A controlling device as defined by claim 1, characterized in that said adjustable stop is moved into outset position at starting of the combustion engine.
- 3. A controlling device as defined by claim 2, characterized in that said actuating element directly effects said drag lever and said adjusting lever by way of a pivoting motion, and via a predetermined relative adjusting distance a between said drag lever and said adjusting lever, and said drag lever communicates with the adjusting lever by way of a coupling element.
- 4. A controlling device as defined by claim 1, characterized in that said governor spring assembly comprises a main governor spring with one end of said main governor spring communicating with said drag lever by way of a driving device which disengages from said drag lever during release of said governor spring assembly and the outset position of said drag lever, said governor spring assembly further comprising an extension part extending over the driving device, the extension part disposing a support point at one end, with at least one additional governor spring disposed between said support point and the adjusting lever.
- 5. A controlling device as defined by claim 1, characterized in that at start of the engine said stop which is adjustable in accordance with operating parameters, is moved out of operating position by a stop link, the stop link being stressed against a return spring by the feed pressure of a pressure pump operating jointly with the fuel injection pump, and the return spring moving the stop link into operating position with the stop if pressure is too low.
- 6. A controlling device as defined by claim 5, characterized in that the stop link is a piston whose one face end is stressed by the feed pressure of the pressure pump, and which is tightly displaceable in a cylinder, and a chamber enclosed at one end of this cylinder communicating with a release chamber by way of a throttle.
- 7. A controlling device as defined by claim 6, characterized in that the piston, after a respective stroke counter to the pressure of the return spring, includes a previously open release line discharging from the feed side into the chamber, the release line comprising an additional throttle.
- 8. A controlling device as defined by claim 6, characterized in that said chamber communicates with the release chamber via a throttle which is adjustable in accordance with temperature.
- 9. A controlling device as defined by claim 5, characterized in that said piston effects an adjusting lever and said adjusting lever is deflected from an adjustable stop through said piston in the direction of supplementary fuel feed, and counter to a force of a return spring, the deflection route being defined by a temperature-dependent stop.
Priority Claims (1)
Number |
Date |
Country |
Kind |
3147701 |
Dec 1981 |
DEX |
|
Parent Case Info
This is a division of application Ser. No. 425,810, filed Sept. 28, 1982, now abandoned.
US Referenced Citations (5)
Divisions (1)
|
Number |
Date |
Country |
Parent |
425810 |
Sep 1982 |
|