Title:
IDLE ROTATIONAL SPEED LEARNING CONTROLLER FOR ENGINE
Document Type and Number:
Japanese Patent JP3203470
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve a learning frequency and learning accuracy in the learning of the changed part of a leakage air amount when a throttle valve is fully closed.
SOLUTION: The magnitude of a compressor load and an electric load are estimated on the basis of the capacity control signal of a variable capacity compressor and a control signal for constantly keeping the output voltage of an alternator (S23). Next, the magnitude of the foregoing loads is converted into the control value of an auxiliary air control valve (S24). Then, the control value corresponding to the magnitude of the foregoing loads is subtracted from a feedback correction amount (S25) so as to learn the subtracted result as the changed part of a leakage air amount (S26).
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Inventors:
Shoichi Sakai
Application Number:
JP32894895A
Publication Date:
August 27, 2001
Filing Date:
December 18, 1995
Export Citation:
Assignee:
Unisia Jecs Co., Ltd.
International Classes:
F02D45/00; F02D29/04; F02D29/06; F02D41/16; (IPC1-7): F02D41/16; F02D29/04; F02D29/06; F02D45/00
Domestic Patent References:
| JP5288101A | ||||
| JP7103026A | ||||
| JP233422A |
Attorney, Agent or Firm:
Fujio Sasashima