ENGINE FUEL INJECTION CONTROL DEVICE

Title:

ENGINE FUEL INJECTION CONTROL DEVICE

Document Type and Number:

WIPO Patent Application WO/2017/086189

Kind Code:

A1

Abstract:

This engine fuel injection control device provided with a solenoid-type fuel injection valve 67, includes: a voltage sensor SW19 that detects voltage at the solenoid of the fuel injection valve 67; and a PCM 10 that sets a valve opening period of the fuel injection valve 67 on the basis of a fuel injection amount corresponding to the operation state of an engine 1, and controls the fuel injection valve 67 on the basis of the valve opening period. The PCM 10 corrects the set valve opening period such that the valve opening period is shorter when the voltage (residual voltage) detected by the voltage sensor SW19 at a time of opening of the fuel injection valve 67 is greater, and controls the fuel injection valve 67 on the basis of the corrected valve opening period.

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WO/2008/009313	METHOD FOR INJECTING FUEL BY MEANS OF FUEL INJECTION SYSTEM
WO/1988/002544	SOLENOID DRIVER CONTROL CIRCUIT WITH INITIAL BOOST VOLTAGE
JPS60195967	[Title of the device] A fuel supply system of an internal-combustion engine

Inventors:

HORIUCHI HIROAKI (JP)
SHINTANI SHUHEI (JP)
NAKAGAWA SHIGERU (JP)

Application Number:

PCT/JP2016/082830

Publication Date:

May 26, 2017

Filing Date:

November 04, 2016

Export Citation:

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Assignee:

MAZDA MOTOR (JP)

International Classes:

F02D41/20; F02D41/34; F02D41/40

Domestic Patent References:

WO2013191267A1	2013-12-27
WO2015015541A1	2015-02-05

Foreign References:

JPH10266885A	1998-10-06
JPH06101552A	1994-04-12