Speed control apparatus for an internal combustion engine
A speed control apparatus for an internal combustion engine comprises a throttle valve in an intake pipe of the engine, a throttle adjusting element for actuating the throttle valve, and a speed control regulator connected to the throttle adjusting element. The regulator produces a signal representative of the difference between the actual value and a desired value of engine speed and the throttle adjusting element actuates the throttle valve in dependence upon this signal when the engine is not idling. Means are provided for moving the throttle valve into its idling position when the voltage supplied to the speed control regulator is interrupted. In accordance with the invention (1) the throttle adjusting element is permanently mechanically coupled to the throttle valve; (2) switch means are provided which automatically interrupt the voltage supplied to the speed control regulator when the engine speed falls below a minimum value that lies below idling speed; and (3) a starting pulse switch is connected in parallel with the above-mentioned switch for supplying a voltage pulse to the speed control regulator determinative of the starting position of the throttle valve.
- Assignee:
- Volkswagenwerk Aktiengesellschaft
- Patent Number(s):
- US 4084559
- OSTI ID:
- 7098020
- Country of Publication:
- United States
- Language:
- English
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