Measuring and testing – Simulating operating condition – Marine
Patent
1998-06-04
2000-10-31
McCall, Eric S.
Measuring and testing
Simulating operating condition
Marine
G01M 1500
Patent
active
061385042
ABSTRACT:
A method for controlling the air/fuel ratio of an internal combustion engine uses a manifold pressure sensor and an exhaust gas recirculation system having an orifice and a exhaust pressure sensor located upstream of the orifice. Both the manifold pressure sensor and the exhaust pressure sensor are sampled synchronously with a frequency proportional to the firing frequency of the engine and then filtered to eliminate unwanted frequencies. The sampled signals obtained then have the necessary bandwidth needed for closed loop control of the exhaust gas recirculation flow and engine air/fuel ratio control.
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Kotwicki Allan Joseph
Lewis Donald J.
Pursifull Ross Dykstra
Russell John David
Ford Global Technologies Inc.
McCall Eric S.
Russell John D.
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