Title:
INTAKE AIR FLOW RATE ADJUSTING DEVICE FOR INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP3265496
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To easily and accurately perform the adjustment of an initial idle time intake air flow rate immediately after the manufacture of an internal combustion engine.
SOLUTION: Since a flag F is set to 1 immediately after the manufacture of an engine (S1), idle revolution speed control is performed when an initial idle intake air flow rate adjusting condition is met (S2 and S3). If an engine revolution speed N is larger than a target revolution speed NSET, a feedback correction amount ISCf is decreased by a specified amount, and if N is smaller than NSET, the feedback correction amount ISCf is increased by a specified amount (S4 to S6). Then, the average value ISCMS of the feedback correction amount ISCf is stored in a memory as the adjusted value of an initial idle time intake air flow rate (S7 and S8), and thereafter an idle time intake air flow rate is controlled by using this adjusted value ISCMS as an initial value.
Inventors:
Shoichi Sakai
Application Number:
JP7436296A
Publication Date:
March 11, 2002
Filing Date:
March 28, 1996
Export Citation:
Assignee:
Unisia Jecs Co., Ltd.
International Classes:
F02D31/00; F02D41/08; F02D41/16; F02D45/00; F02D41/24; (IPC1-7): F02D41/16; F02D41/08; F02D45/00
Domestic Patent References:
| JP62253940A | ||||
| JP6293456A | ||||
| JP1104941A | ||||
| JP6435036A | ||||
| JP6131267A |
Attorney, Agent or Firm:
Fujio Sasashima
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