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AssigneeCummins Engine Company, Inc.
InventorsCarol L. Corbeels, Eric A. Holloway
Estimating the term…
A system for executing a method for estimating atmospheric air pressure ambient to an internal combustion engine as a means to preclude the need for an atmospheric air pressure sensor. The system includes an absolute boost pressure sensor, an engine speed sensor, and an electronic control unit. The absolute boost pressure sensor provides a first signal that is indicative of the absolute boost pressure of the air received within the intake manifold of the engine. The engine speed sensor provides a second signal that is indicative of the engine speed of the engine. The electronic control unit generates a third signal that is indicative of the atmospheric air pressure ambient to the engine, a fourth signal that is indicative of a gage boost pressure of the engine, and a fifth signal that is indicative of a fuel command for the engine. When the engine is idling, the atmospheric air pressure signal is generated as a function of the absolute boost pressure signal. When the engine is running in a steady state, the gage boost pressure signal is generated as a function of the engine speed signal and the fuel command signal, and the atmospheric air pressure signal is generated as a function of the absolute boost pressure signal and the gage boost pressure signal. Alternatively, the system can further include a controller for synonymously generating the atmospheric air pressure signal and the gage boost pressure signal, and for providing these signals to the electronic control unit.
A method of estimating atmospheric air pressure ambient to an internal combustion engine, said method comprising the steps of:
A method of estimating atmospheric air pressure ambient to an internal combustion engine, said method comprising the acts of:
A system for estimating atmospheric air pressure ambient to an internal combustion engine, said system comprising:
A system for estimating atmospheric air pressure ambient to an internal combustion engine, said system comprising:
A system for estimating atmospheric air pressure ambient to an internal combustion engine, said system comprising:
A method of estimating atmospheric air pressure ambient to an internal combustion engine, comprising:
Dependencies are inferred from the claim text.