Air/fuel ratio detecting apparatus, and method of detecting norm

Measuring and testing – Test stand – For engine

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

G01M 1500

Patent

active

047826908

ABSTRACT:
An air/fuel ratio sensor having a sensor section and a pump section, capable of accurately sensing air/fuel ratio and an air/fuel ratio detecting and controlling apparatus by utilizing the air/fuel ratio sensor in which the accuracy of air/fuel ratio detection and control can be improved by varying the number of cylinders into which fuel is injected in a multi-step manner, during engine deceleration while maintaining the amount of fuel injected into each cylinder at a constant level, by determining whether the air/fuel ratio sensor operation is normal or abnormal on the basis of the air/fuel ratio sensor output level when fuel injection is performed into all of the cylinders, the output sensor level when fuel injection is performed only into specific cylinders, and the sensor output level when fuel injection to all cylinders is halted.
A method of detecting an abnormal condition of the air/fuel ratio sensor is also disclosed and a suitable correction of the air/fuel ratio is also performed in accordance with the result of the conditions of the sensor.

REFERENCES:
patent: 4391130 (1983-07-01), Nakano et al.
patent: 4706633 (1987-11-01), Nakagawa
patent: 4707241 (1987-11-01), Nakagawa 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

Air/fuel ratio detecting apparatus, and method of detecting norm does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Air/fuel ratio detecting apparatus, and method of detecting norm, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Air/fuel ratio detecting apparatus, and method of detecting norm will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-458301

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