Engine system and fuel vapor purging system with cylinder deactivation
AssigneeFord Global Technologies, LLC
InventorsMichael John Cullen, Gopichandra Sumilla, Christian T. Goralski, Jr.
Life of this patent
Estimating the term…
Abstract
Various systems and methods are disclosed for carrying out combustion in a fuel-cut operation in some or all of the engine cylinders of a vehicle. Further, various subsystems are considered, such as fuel vapor purging, air-fuel ratio control, engine torque control, catalyst design, and exhaust system design.
Claims20
A vapor recovery control system for an engine having a first set of cylinders and a second set of cylinders, said system comprising:
- a vapor recovery system coupled to the engine for delivering purge vapor to the first set of cylinders;
- a control valve positioned between said vapor recovery system and the first set of cylinders;
- and
- a controller for actuating said control valve in response to a purge signal, operating said first set of cylinders to combust inducted air and purge vapor in said first set of cylinders, and operating said second set of cylinders to induct air with substantially no injected fuel.
A vapor recovery control system for an engine having a first set of cylinders and a second set of cylinders, said system comprising:
- a vapor recovery system coupled to the engine for delivering purge vapor to the first set of cylinders;
- a control valve positioned between said vapor recovery system and the first set of cylinders;
- and
- a controller for actuating said control valve in response to a purge signal, operating said first set of cylinders to combust inducted air and purge vapor in said first set of cylinders, operating said second set of cylinders to induct air with substantially no injected fuel and substantially no inducted purge vapors.
A computer readable storage medium having stored data representing instructions executable by a computer to control an engine having a first set of cylinders and a second set of cylinders, the computer readable storage medium comprising:
- instructions for actuating a control valve of a vapor recovery system coupled to the engine, the valve controlling purge vapor delivered only to the first set of cylinders;
- instructions for operating said first set of cylinders to combust inducted air, purge vapor from said control valve, and injected fuel in said first set of cylinders;
- and
- instructions for operating said second set of cylinders to induct air with substantially no injected fuel.
Dependencies are inferred from the claim text.