F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.13
F02D 41/30 (2006.01) F02D 41/14 (2006.01) F02D 41/34 (2006.01) F02B 75/02 (2006.01)
Patent
CA 2017266
- 17 - ABSTRACT OF THE INVENTION An air/fuel ratio control system and method for correcting the air/fuel ratio for each of N cylinders in an internal combustion engine having electronically actuated fuel injectors coupled to each cylinder. A first air/fuel controller provides a desired fuel command for maintaining an average air/fuel ratio among the cylinders in response to an exhaust gas oxygen sensor and a measurement of inducted air flow. A second air/fuel controller generates N trim signals by sampling the exhaust gas oxygen sensor once each combustion period, synchronizing the samples to generate N nonperiodic samples, correlating the samples with the corresponding combustion event and integrating. The fuel command to each fuel injector is then trimmed for operating each cylinder at a desired air/fuel ratio.
Cook Jeffrey A.
Grizzle Jessy W.
Cook Jeffrey A.
Ford Motor Company
Ford Motor Company Of Canada Limited
Grizzle Jessy W.
Sim & Mcburney
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