System and method for mode selection in a variable displacement engine
October 26, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesControl system for closed loop mixture correction and split engine operation Variable displacement engine Control arrangement for multi-cylinder two cycle engine Exhaust gas recirculation system fault detector Method and apparatus for inferring the actual air charge in an internal combustion engine during transient conditions Cylinder mode selection system for variable displacement internal combustion engine Patent #: 5408974 InventorsApplicationNo. 400066 filed on 03/07/1995US Classes:123/198FCylinder cut outExaminersPrimary: Kamen, Noah P.Attorney, Agent or FirmInternational ClassF02B 077/00AbstractA 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.Other References
Field of SearchCylinder cut out | |
