Title:
【発明の名称】排気還流制御装置の故障診断方法
Document Type and Number:
Japanese Patent JP2881075
Kind Code:
B2
Abstract:
A method of diagnosing an exhaust gas recirculation control system of an engine as to occurrence of a fault in the system. The state of a pressure sensor incorporated in the exhaust gas recirculation system for controlling the recirculation is checked with the aid of various parameters involved in operation of the engine. When the pressure sensor is found as suffering from abnormality such as freezing and inoperative, execution of the diagnosis or result obtained after execution of the diagnosis is invalidated.
Inventors:
UCHINAMI MASANOBU
Application Number:
JP20910692A
Publication Date:
April 12, 1999
Filing Date:
August 05, 1992
Export Citation:
Assignee:
MITSUBISHI DENKI KK
International Classes:
F02B47/08; F02D21/08; F02D41/22; F02M25/07; (IPC1-7): F02M25/07
Domestic Patent References:
JP2130253A | ||||
JP6181567A | ||||
JP6311127A |
Attorney, Agent or Firm:
Soga Doteru (6 people outside)