Title:
FUEL INJECTION AMOUNT CORRECTION CONTROL METHOD AND COMMON RAIL-TYPE FUEL INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2016098688
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To correct a fuel injection amount by control of a valve closing time of higher reliability and stability in comparison with a conventional one, even under a low temperature environment.SOLUTION: In an electronic control unit 4 constituting a common rail type fuel injection control device, correction of a fuel injection amount is executed by controlling a valve closing time to correct dispersion of fuel injection amounts by adjusting timings of termination of energization of fuel injection valves 2-1 to 2-n according to deviation obtained by measuring valve closing timings of the solenoid valves inside of the fuel injection valves 2-1 to 2-n, and calculating the deviation between the measured values and a standard valve closing time as a valve closing timing of the solenoid valve inside of the fuel injection valve having a standard characteristic. Thus the execution of the correction of fuel injection amount by controlling the valve closing time is inhibited before the lapse of a prescribed time from the start of the engine of the vehicle, and the proper correction of the fuel injection amount can be secured.SELECTED DRAWING: Figure 1
Inventors:
HATTORI KOJI
Application Number:
JP2014235161A
Publication Date:
May 30, 2016
Filing Date:
November 20, 2014
Export Citation:
Assignee:
BOSCH CORP
International Classes:
F02D41/06; F02D41/14; F02D45/00
Domestic Patent References:
| JP2012158999A | 2012-08-23 | |||
| JP2011140926A | 2011-07-21 | |||
| JPS4639656B1 |
Foreign References:
| WO2013191267A1 | 2013-12-27 | |||
| WO2011046074A1 | 2011-04-21 |