Measuring and testing – Simulating operating condition – Marine
Reexamination Certificate
2007-10-02
2007-10-02
McCall, Eric S. (Department: 2855)
Measuring and testing
Simulating operating condition
Marine
Reexamination Certificate
active
11278207
ABSTRACT:
A control system for an internal combustion engine includes a virtual engine model which mathematically represents the states of the engine in real time, but which is programmed to provide the engine's states at least a fraction of an engine cycle (and preferably at least one-fourth of an engine cycle, i.e., one stroke) to several engine cycles in advance of the real engine. The mass flow entering and leaving the cylinder is modeled, allowing parameters such as the mass of air per cylinder (MAC) and residual exhaust gas to be computed, and thereafter used to generate engine control commands related to fuel injection (air/fuel ratio), spark advance, and so forth.
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Lahti John L.
Moskwa John J.
DeWitt Ross & Stevens S.C.
Fieschko, Esq. Craig A.
McCall Eric S.
Wisconsin Alumni Research Foundation
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