Method of locating a partially plugged port fuel injector using

Details Method of locating a partially plugged port fuel injector using Method of locating a partially plugged port fuel injector using

1988-01-21

1989-06-27

Levy, Stewart J.

Measuring and testing

Internal combustion engine or related engine system or...

Compression

G01M 1500

Patent

active

048417653

ABSTRACT:
A method of locating a partially plugged port fuel injector in an internal combustion engine using a misfire monitor is disclosed. In the preferred embodiment, the misfire monitor includes an oxygen analyzer for determining that the lean-roll frequency of the engine has decreased or ceased when the partially plugged fuel injector is disabled or when the cylinders associated with the partially plugged fuel injector are disabled.

REFERENCES:
patent: 4015428 (1977-04-01), Kawai
patent: 4030349 (1977-06-01), Blanke et al.
patent: 4031747 (1977-06-01), Blanke
patent: 4493208 (1985-01-01), Grover

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