Idle speed control

Details Idle speed control Idle speed control

1996-03-04

1997-05-20

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333919, F02D 4116

Patent

active

056303947

ABSTRACT:
A speed control system is shown for an internal combustion engine (10) having an intake manifold (44) and throttling device (96) connected thereto in parallel with the main throttle plate (62). After an idle speed command is detected (200), the engine (10) is decelerated (204-230) to a preselected speed by adjusting the throttling device (96) to concurrently force both engine speed and engine acceleration within a predetermined acceleration/speed range(s). When the preselected speed is reached, engine speed is regulated (300-328) to a desired idle speed by adjusting the throttling device (96) to force a difference between the engine and idle speed towards zero.

REFERENCES:
patent: 4438744 (1984-03-01), Hasegawa
patent: 4788954 (1988-12-01), Otobe et al.
patent: 4799466 (1989-01-01), Shibata et al.
patent: 5213076 (1993-05-01), Umemoto et al.
patent: 5261368 (1993-11-01), Umemoto
patent: 5517964 (1996-05-01), Chen et al.

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