Fault diagnosis device for an exhaust gas recycle control unit

Details Fault diagnosis device for an exhaust gas recycle control unit Fault diagnosis device for an exhaust gas recycle control unit

1992-03-05

1993-11-02

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

G01M 1500

Patent

active

052575349

ABSTRACT:
A fault diagnosis device and process for an exhaust gas recycle control unit of an engine, comprising a return pipe for returning the exhaust gas to an intake pipe, apparatus for opening and closing the return pipe and apparatus for detecting and storing engine operating conditions when the return pipe is opened and closed. The opening and closing apparatus is controlled so that the flow rate of the returned gas is gradually changed when the return pipe is closed from the open state or vice versa.

REFERENCES:
patent: 5103655 (1992-04-01), Kano et al.

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