Dynamic engine pumping work estimation algorithm

Details Dynamic engine pumping work estimation algorithm Dynamic engine pumping work estimation algorithm

2006-10-24

2006-10-24

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S054000, C123S325000

Reexamination Certificate

active

07127346

ABSTRACT:
An engine control system that regulates operation of an engine includes an intake valve that regulates air intake into a cylinder of the engine and an exhaust valve that regulates exhaust from the cylinder. A control module determines a cylinder volume at intake valve closure and a cylinder volume at intake valve opening and calculates an intake pumping torque based on the cylinder volume at intake valve closure and the cylinder volume at intake valve opening. The control module determines a cylinder volume at exhaust valve closure and a cylinder volume at exhaust valve opening and calculates an exhaust pumping torque based on the cylinder volume at exhaust valve closure and the cylinder volume at exhaust valve opening. The control module calculates a net pumping torque based on the intake pumping torque and the exhaust pumping torque and regulates engine operation based on the net pumping torque.

REFERENCES:
patent: 6876918 (2005-04-01), Kabe et al.
patent: 1 347 163 (2003-09-01), None
patent: 63-147957 (1988-06-01), None

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