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US 8,784,265 B2Granted
Method for starting an engine
AssigneeFord Global Technologies, LLC
InventorsFelix Nedorezov, Hong Jiang, Alex O'Connor Gibson, Roger Lyle Huffmaster, Ihab S. Soliman
Life of this patent
Estimating the term…
Abstract
A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one embodiment, the method adjusts a transmission actuator in response to engine combustion during an engine start. The method may improve vehicle launch for stop/start vehicles.
Claims20
A method for starting an engine, comprising:
- tracking engine position as spark and fuel are deactivated;
- stopping the engine;
- predicting a first combustion event of a cylinder for an engine start based on the tracked engine position;
- and
- during the engine start, adjusting a transmission tie-up force in response to a timing of the first combustion event of the cylinder.
2 more elements
A method for starting an engine, comprising:
- stopping an engine and tracking engine position during stopping the engine as spark and fuel are deactivated;
- adjusting at least one actuator of a transmission to control a transmission tie-up force during said engine stop;
- predicting a combustion event of a cylinder based on the tracked engine position;
- and
- during an engine start, adjusting said at least one actuator of said transmission to decrease said transmission tie-up force in response to a timing of the combustion event of the cylinder of said engine since stopping the engine.
2 more elements
A method for starting an engine, comprising:
- during a first condition:
- starting an engine while a transmission is in an operator selected state;
- and
- during a second condition, different than said first condition:
- stopping an engine at a first engine position and tracking engine position as spark and fuel are deactivated;
- predicting a first combustion event of a cylinder based on the tracked engine position;
- starting said engine while said transmission is in a tied-up state;
- and
- reducing a tie-up force of said transmission in response to the predicted first combustion event of the cylinder since engine stop, said occurrence of a first combustion event related to said first engine position.
6 more elements
Dependencies are inferred from the claim text.