Device of controlling the idling speed of an engine

Details Device of controlling the idling speed of an engine Device of controlling the idling speed of an engine

1981-12-03

1983-12-27

Wayner, William E.

Heat exchange

Movable heating or cooling surface

Rotary drum

623231, 165 43, 123339, B60H 304, F22B 2104

Patent

active

044224974

ABSTRACT:
An engine comprising a main intake passage having a throttle valve therein. A bypass passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. A flow control valve, actuated by a step motor, is arranged in the bypass passage. When the engine is operating in an idling state, the step motor is rotated in a rotating direction wherein the engine speed approaches a desired idling speed. An air conditioning device is provided, which comprises an air duct, an evaporator arranged in the air duct, a heat exchanger arranged in the air duct, and an air mixture damper for controlling the flow of air which has passed through the evaporator. The desired engine speed is increased when the temperature of air, which has passed through the evaporator, becomes higher than a predetermined temperature and when the entire air, which has passed through the evaporator, directly flows into the driver's compartment without passing through the evaporator.

REFERENCES:
patent: 4250956 (1981-02-01), Ohtani
patent: 4289100 (1981-09-01), Kinugawa et al.
patent: 4346686 (1982-08-01), Wahta et al.
patent: 4383574 (1983-05-01), Yoshioka

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