Title:
ABNORMALITY DETECTION DEVICE
Document Type and Number:
Japanese Patent JP2016124321
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To make it possible to determine presence or absence of an off-set failure of a sensor without any additional component.SOLUTION: An intake manifold negative pressure sensor 44 detects a pressure in an air suction pipe 32 provided in an engine 12, and a booster negative pressure sensor 52 detects a pressure in a negative pressure chamber provided in a brake booster 48. An engine ECU 56 gives a notification on abnormality when a booster negative pressure sensor value approaches a vacuum side with respect to an intake manifold negative pressure sensor value during a pressure in the negative pressure chamber is recovered, or when a difference between the intake manifold negative pressure sensor value and the booster negative pressure sensor value exceeds a threshold in the state that a pressure in the air suction pipe 32 is stable.SELECTED DRAWING: Figure 1
Inventors:
MIYAWAKI TAKURO
YAMASHITA SHINJI
YAMASHITA SHINJI
Application Number:
JP2014264389A
Publication Date:
July 11, 2016
Filing Date:
December 26, 2014
Export Citation:
Assignee:
DAIHATSU MOTOR CO LTD
International Classes:
B60T17/22; B60T13/52; B60T17/00; F02D43/00; F02D45/00
Domestic Patent References:
| JP2010143543A | 2010-07-01 |
Attorney, Agent or Firm:
Sakai Masatoshi
Reiko Yoshida
Reiko Yoshida
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