Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1994-01-10
1995-02-28
Lazarus, Ira S.
Power plants
Internal combustion engine with treatment or handling of...
Methods
60276, 60285, 123703, F01N 320
Patent
active
053925998
ABSTRACT:
Engine air/fuel ratio is controlled in response to a comparison of an exhaust gas oxygen sensor output with a reference value. A correction voltage is generated which is related to a change in the midpoint between saturated output states of the sensor during a test period in which engine air/fuel operation is first forced rich and then forced lean of a preselected air/fuel ratio. The sensor output amplitude is shifted with the correction voltage to reduce variations between the reference value and the midpoint.
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ACS Symposium Series 309, entitled "Fundamentals and Applications of Cehmical Sensors" by Dennis Schuetzle and Robert Hammerle.
Hamburg Douglas R.
Logothetis Eleftherios M.
Ford Motor Company
Lazarus Ira S.
Lippa Allan J.
May Roger L.
O'Connor Daniel J.
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