Apparatus with dynamic prediction of EGR in the intake manifold

Details Apparatus with dynamic prediction of EGR in the intake manifold Apparatus with dynamic prediction of EGR in the intake manifold

1992-08-10

1993-12-28

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Crankcase vapor used with combustible mixture

F02M 2507

Patent

active

052730190

ABSTRACT:
A method and apparatus disclosed provide dynamic prediction of re-circulated exhaust gas content in an engine intake manifold. An engine-controller combination, comprises a vehicle engine and an exhaust gas re-circulation valve providing re-circulation of engine exhaust gas. Several sensors determine measures of a set of engine parameters and provide measurement signals indicative of the measures. A microprocessor control unit receives the measurement signals, (ii) predicts future values of MAP and P.sub.o, where MAP represents an absolute pressure of an engine intake manifold and where P.sub.o represents a new air partial pressure of the engine intake manifold, and (iii) controls the vehicle engine in response to the predicted future values of MAP and P.sub.o.

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