Title:
IDLE ROTATION SPEED CONTROL DEVICE OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JP2018204582
Kind Code:
A
Abstract:
To provide an idle rotation speed control device of an internal combustion engine capable of reducing the number of times of execution of initializing processing.SOLUTION: In an idle rotation speed control device having a throttle valve 10 disposed on an intake passage 2 of an engine 1, a step motor-type ISCV 13 disposed on a bypass passage 12 bypassing the throttle valve 10, and an ECU 30 controlling the engine 1 including opening control of the ISCV 13, the ECU 30 compares the number of steps for driving the ISCV 13 between the last idle operation and a present idle operation, and drives the ISCV 13 to a predetermined reference opening when a result of the comparison is larger than a predetermined prescribed number of steps, to execute an initializing processing to agree a relationship between the stored number of steps and actual opening of the ISCV 13.SELECTED DRAWING: Figure 2
Inventors:
MURAKAMI KENICHI
Application Number:
JP2017113664A
Publication Date:
December 27, 2018
Filing Date:
June 08, 2017
Export Citation:
Assignee:
AISAN IND
International Classes:
F02D41/22; F02D9/02; F02D29/02; F02D41/08
Attorney, Agent or Firm:
Patent Business Corporation Cosmos Patent Office