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Patent Searching and Data


Title:
ELECTRONIC CONTROL FUEL INJECTION DEVICE
Document Type and Number:
Japanese Patent JPH08170557
Kind Code:
A
Abstract:

PURPOSE: To increase startability and idle stability after starting by detecting the operating condition of reduced engine speed after the maximum engine speed is reached immediately after start of engine and compensating the compensation coefficients for increase to optimum fuel injection amount and intake air amount suitable mostly to the operating condition.

CONSTITUTION: When the detected value of a water temperature sensor 23 at the start of an engine 1 is within a specified limit, a time elapsed after the start is less than a specified value, and an engine speed is lower than a first specified value, ignition delayed angle for catalyst warming-up is prohibited. Next the engine speed becomes above or under a second specified value lower than the first specified value, increased amount compensation coefficients for fuel injection amount and intake air amount are set in each case and stored in a backup RAM. When the increased amount compensation coefficient for fuel injection amount is larger than zero, a damping coefficient to damp the increased amount compensation coefficient rapidly is selected in air ratio feedback and, not in air ratio feedback, a damping coefficient to damp it slowly is selected.


Inventors:
KOSAKA YASUO
ASAKUMA HIDEHIKO
TAKASU YASUHITO
Application Number:
JP31363094A
Publication Date:
July 02, 1996
Filing Date:
December 16, 1994
Export Citation:
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Assignee:
NIPPON DENSO CO
International Classes:
F02D41/02; F02D41/06; F02D41/14; F02D43/00; F02N19/00; F02P5/15; H02P9/08; (IPC1-7): F02D41/06; F02D41/06; F02D41/14; F02D43/00; F02N17/08; F02P5/15; H02P9/08
Domestic Patent References:
JPH0814080A1996-01-16
JPH04109044A1992-04-10
JPS62121844A1987-06-03
JPH023035U1990-01-10
JPS524925U1977-01-13
Attorney, Agent or Firm:
Hirohiko Usui