Device and method for controlling air volume during idle...

Details Device and method for controlling air volume during idle... Device and method for controlling air volume during idle...

2005-11-01

2005-11-01

Argenbright, Tony M. (Department: 3747)

Internal-combustion engines

Engine speed regulator

Idle speed control

C123S339190, C701S110000

Reexamination Certificate

active

06959691

ABSTRACT:
To permit easy and adequate setting of a gain in an internal combustion engine (hereinafter be called an “engine”) for the surer stabilization of an idle speed, the present invention provides a device for controlling an air volume during an idle operation of the engine. This device is provided with a first estimation unit for estimating a current output torque correlation value corresponding to a present intake-air volume of the engine; a second estimation unit for estimating an output torque correlation value correction amount corresponding to a difference between a current engine speed and a target engine speed of the engine; a third estimation unit for estimating a target output torque correlation value based on the correlation value and the correction amount; and a control unit for controlling an intake-air-volume adjusting system of the engine to achieve an intake-air volume which is equivalent to the target output torque correlation value.

REFERENCES:
patent: 6305350 (2001-10-01), Livshiz et al.
patent: 6820589 (2004-11-01), Okubo et al.
patent: 7-197828 (1995-08-01), None
patent: 7-259596 (1995-10-01), None

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