Torque delivery
AssigneeFord Global Technologies, LLC
InventorVincent J. Winstead
Life of this patent
Estimating the term…
Abstract
A system for controlling a multiple cylinder internal combustion engine having a plurality of cylinders with electronically actuated valves (EVA) is presented. The system is designed to improve the torque delivery of an EVA engine that operates a portion of cylinders in an HCCI combustion mode.
Claims22
A method for controlling torque delivery in a homogeneous charge compression ignition engine having a plurality of cylinders using electronic valve actuation, comprising:
- operating a first portion of the cylinders in a homogeneous charge compression ignition (HCCI) mode;
- cycling a second portion of the cylinders in a non-firing mode;
- actuating at least one valve in the second portion of cylinders to adjust the pumping work of the second portion of cylinders;
- and
- adjusting the actuation of the at least one valve in the second portion of cylinders to smooth the torque delivery of the engine.
A system for controlling a multiple cylinder internal combustion engine having a plurality of cylinders with electronically actuated valves, comprising:
- a first portion of cylinders to operate in a homogeneous charge compression ignition (HCCI) mode;
- a second portion of cylinders to operate in a non-firing mode;
- and
- an engine controller operably coupled to electronically actuated valves of the first and second portions of cylinders, said controller configured to actuate at least one valve in the second portion of cylinders to adjust the pumping work of the second portion of cylinders, wherein the engine controller is configured to adjust the actuation of the at least one valve in the second portion of cylinders to smooth the torque delivery of the engine.
A non-transitory computer storage medium having instructions encoded therein for controlling torque delivery in a homogeneous charge compression ignition engine having a plurality of cylinders using electronic valve actuation, said medium comprising:
- code to operate a first portion of the cylinders in a homogeneous charge compression ignition (HCCI) mode;
- code to cycle a second portion of the cylinders in a non-firing mode;
- code to actuate at least one valve in the second portion of cylinders to adjust pumping work of the second portion of cylinders;
- and
- code to adjust the actuation of the at least one valve in the second portion of cylinders to smooth the torque delivery of the engine.
A method for controlling torque delivery in a homogeneous charge compression ignition (HCCI) engine having a plurality of cylinders, comprising:
- operating a first portion of the cylinders in an HCCI mode;
- cycling a second portion of the cylinders in a non-firing mode;
- adjusting pumping work of a cylinder in the second portion by actuating an electric intake valve coupled to the cylinder while adjusting valve actuation timing to smooth engine torque delivery.
Dependencies are inferred from the claim text.