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U.S. Department of Energy
Office of Scientific and Technical Information

Engine speed control system

Patent ·
OSTI ID:6308506
An idle control system for an automobile internal combustion engine includes an idle control unit for controlling the operation of an electromagnetically operated actuator. While the engine has a combustible mixture intake passage leading to the engine and a throttle valve operatively positioned inside the mixture intake passage for controlling the flow of a combustible air-fuel mixture towards the engine, the actuator is utilized to adjust either the effective cross sectional area of a bypass air passage leading from the air source to the mixture intake passage at a position downstream of the throttle valve or the opening of the throttle valve, to control the engine speed during idling to a predetermined value.
Assignee:
Toyo Kogyo Co Ltd (Japan)
Patent Number(s):
US 4370960
OSTI ID:
6308506
Country of Publication:
United States
Language:
English