Internal-combustion engines – Accessories – Covers – trays – vibrators – corrosion inhibitors – air filters
Patent
1995-03-07
1999-10-26
Kamen, Noah P.
Internal-combustion engines
Accessories
Covers, trays, vibrators, corrosion inhibitors, air filters
F02B 7700
Patent
active
059709430
ABSTRACT:
A system and method for selecting the operating mode of a variable displacement engine includes a controller with a stored engine map, an engine speed sensor, and an inferred desired fractional manifold vacuum which would be required for the engine to operate on a fractional number of cylinders, given the driver's current torque requirements, a specific emissions calibration, and environmental conditions, deriving this inferred desired fractional manifold vacuum from stored information and assorted engine sensor input. The system compares its inferred desired fractional manifold vacuum and current engine speed to one or more stored maps of inferred desired fractional manifold vacuum versus engine speed in order to decide which operating mode should be selected.
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Hieb Bradley J.
Robichaux Jerry D.
Drouillard Jerome R.
Ford Global Technologies Inc.
Kamen Noah P.
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