Engine diagnostic method

Details Engine diagnostic method Engine diagnostic method

1998-12-21

2000-09-05

Denion, Thomas

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

60274, 60276, 60277, 73 2332, 73 2331, F02D 4100

Patent

active

061127310

ABSTRACT:
An engine diagnostic method for an engine having a switching exhaust gas sensor and a fuel system uses the switching exhaust gas sensor during open loop fuel enrichment to diagnose fuel system degradation, including fuel filter degradation.

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patent: 5213088 (1993-05-01), Harada
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