Method and apparatus for monitoring engine control sensors

Details Method and apparatus for monitoring engine control sensors Method and apparatus for monitoring engine control sensors

1996-11-13

1998-02-03

Raevis, Robert

Measuring and testing

Instrument proving or calibrating

Fluid pressure

G01M 1500

Patent

active

057146730

ABSTRACT:
An inferred manifold absolute pressure based in part on measured manifold mass air flow is compared with a measured manifold absolute pressure from a MAP sensor and if the rolling average of the difference between the two exceeds either a rich or lean limit, an indicator is energized and a code is stored to identify possible MAP sensor deterioration.

REFERENCES:
patent: 4567756 (1986-02-01), Colborn
patent: 5029570 (1991-07-01), Stolman et al.
patent: 5331936 (1994-07-01), Messih et al.
patent: 5526266 (1996-06-01), Rutan et al.
patent: 5554801 (1996-09-01), Watanabe

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