Abnormality detecting method for exhaust gas concentration senso

Internal-combustion engines – Charge forming device – Fuel injection system

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

123489, F02D 4122

Patent

active

048440388

ABSTRACT:
A method of detecting abnormality in an exhaust gas concentration sensor in an internal combustion engine equipped with a fuel supply control system which controls a quantity of fuel to be supplied to the engine in a feedback manner responsive to a value of an air-fuel ratio correction value set in response to an output signal from the sensor. The sensor output signal is monitored from the time a first predetermined period of time has elongated from the start of the engine. The sensor is diagnosed as abnormal if the output signal has continually maintained a substantially constant value over a second predetermined time period elapsed following the first predetermined time period. The first predetermined time period corresponds to a time lag in rise of the output signal. The second predetermined time period is set such that the sum of the first and second preetermined time periods is shorter than a period of time within which the sensor becomes completely activated after the start of the engine.

REFERENCES:
patent: 4359030 (1982-11-01), Sone et al.
patent: 4485786 (1984-12-01), Kashimura
patent: 4502443 (1985-03-01), Hasegawa et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Abnormality detecting method for exhaust gas concentration senso does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Abnormality detecting method for exhaust gas concentration senso, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Abnormality detecting method for exhaust gas concentration senso will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-844535

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.