Title:
PRESSURE SENSOR FAILURE DIAGNOSIS METHOD AND COMMON RAIL-TYPE FUEL INJECTION CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2016176400
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To diagnose presence or absence of failure of a pressure sensor with high accuracy while minimizing delay.SOLUTION: Each fuel injection time of a fuel injection valve is measured (S104, S106), whether all of the measured fuel injection times are outside of a prescribed standard injection time range or not (S108). Failure or abnormality of a pressure sensor is diagnosed (S110) when it is determined that all of the measured fuel injection times are out of the prescribed standard injection time range, on the other hand, normality of the pressure sensor is diagnosed (S112) when any of the fuel injection times exists in the standard injection time range.SELECTED DRAWING: Figure 2
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Inventors:
KANEKO HIROTAKA
Application Number:
JP2015056940A
Publication Date:
October 06, 2016
Filing Date:
March 19, 2015
Export Citation:
Assignee:
BOSCH GMBH ROBERT
International Classes:
F02D41/22; F02D41/38; F02D45/00; F02M51/00; F02M65/00
Domestic Patent References:
| JP2006307671A | 2006-11-09 | |||
| JP2013253508A | 2013-12-19 | |||
| JP2012159009A | 2012-08-23 |
Attorney, Agent or Firm:
Oba Reiji
Hajime Takahashi
Hajime Takahashi