Air management strategy for auto-ignition in a compression...

Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – With indicator or control of power plant

Reexamination Certificate

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Reexamination Certificate

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07013212

ABSTRACT:
A compression ignition engine (10) has a control system (24) for processing data, one or more cylinders (16), a fueling system (18), and a variable valve actuation mechanism (20). Control system (24) develops both fueling data for fueling the engine and timing data representing time during the engine cycle for intake valve closure to a cylinder that will endow the cylinder with an effective compression ratio (ECR) appropriate to current engine operation for causing auto-ignition to occur near or at top dead center in the engine cycle. During a compression upstroke, the cylinder is fueled according to the fueling data and intake valve closure for the cylinder is performed according to the timing data. This creates an air-fuel mixture that is increasingly compressed to the point of auto-ignition near or at top dead center.

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patent: 1 245 811 (2002-02-01), None
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Agrell, Fredrik; Hans-Erik Ångström; Bengt Eriksson; Jan Wikander; and Johan Linderyd, “Integrated Simulation and Engine Test of Closed Loop HCCI Control by Aid of Variable Valve Timings,” SAE Paper No. 2003-01-0748, 2003 SAE World Congress, Mar. 3-6, 2003, SAE International, Warrendale, PA.
Wolters, P.; W. Salber; J. Geiger; M. Duesmann; and J. Dilthey, “Controlled Auto Ignition Combustion Process with an Electromechanical Valve Train,” SAE Paper No. 2003-01-0032, 2003 SAE World Congress, Mar. 3-6, 2003, SAE International, Warrendale, PA.

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