Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1990-07-19
1991-10-15
Nelli, Raymond A.
Internal-combustion engines
Engine speed regulator
Idle speed control
123585, F02M 300
Patent
active
050564838
ABSTRACT:
An engine speed control apparatus capable of controlling the idling speed of an engine without entailing abnormal rise or fall of engine speed while the engine is in operation in an idling mode. An engine speed control apparatus comprises a switch means which assumes a predetermined state when the degree of opening of a throttle valve is in a range from a fully closed state to a predetermined value of opening, an idling mode detecting means which detects an idling mode of the engine on the basis of the operating conditions of the engine which include the output signal of the switch means, and a control means which controls the air intake rate of the engine in a feed-back control mode while the engine is operating in an idling mode so that the engine speed coincides with a target speed, wherein the idling mode detecting means detects the idling mode of the engine by detecting the throttle valve which is in a predetermined range of throttle opening narrower than said predetermined range from the fully closed state to the predetermined value.
REFERENCES:
patent: 4883034 (1989-11-01), Yashiki et al.
patent: 4884540 (1989-12-01), Kishimoto et al.
patent: 4887570 (1989-12-01), Meicher
patent: 4903657 (1990-02-01), Miyazaki et al.
patent: 4933371 (1990-06-01), Albertson et al.
Mitsubishi Denki & Kabushiki Kaisha
Nelli Raymond A.
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