Document Type and Number:
Japanese Patent JPH01142558
Kind Code:
U
Abstract:
An apparatus for and a method of diagnosing an EGR system are disclosed. A temperature within an EGR passage and a rise in temperature within the EGR passage are detected or determined by calculation. When the temperature and the temperature rise are lower than predetermined values, respectively, when the engine running condition falls in a predetermined range (a diagnosis area), it is determined that the EGR system is in trouble.
Application Number:
JP3983688U
Publication Date:
September 29, 1989
Filing Date:
March 25, 1988
Export Citation:
International Classes:
F02B47/08; F02B77/08; F02M25/07; (IPC1-7): F02M25/06