Title:
DEVICE FOR EVALUATING RELIABILITY OF HIGH PRESSURE FUEL SYSTEM
Document Type and Number:
Japanese Patent JP2007113503
Kind Code:
A
Abstract:
To perform appropriate reliability evaluation of a high pressure part including an accumulator.
In a common rail type fuel injection system including a fuel pump 11, a common rail 20 and an injector 23, actual rail pressure is variably controlled based on an engine operation condition from time to time. ECU 30 acquires rail pressure information and counts the number of pressure repetitions every amplitude of a plurality of predetermined pressure amplitudes, and judges reliability of the high pressure part including the common rail 20 based on the number of pressure repetitions every counted pressure amplitude.
Inventors:
Nagai, Koichi
Application Number:
JP2005000306593
Publication Date:
May 10, 2007
Filing Date:
October 21, 2005
Export Citation:
Assignee:
DENSO CORP
International Classes:
F02M63/00; F02D41/22; F02M55/02
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