Method for starting an engine
AssigneeFord Global Technologies, LLC
InventorsAlex O'Connor Gibson, Joseph Norman Ulrey, Henry W. Patterson
Life of this patent
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Abstract
A method for improving starting of an engine that may be repeatedly stopped and started is presented. In one embodiment, the method skips combustion in at least one cylinder, according to the engine combustion order, to control engine speed when an engine is automatically restarted. The skipped combustion event may be related to a level of IMEP when combustion in a cylinder occurs under an operating condition.
Claims20
A method for starting an engine coupled to an automatic transmission, comprising:
- stopping the engine;
- automatically initiating an engine restart with the transmission in gear and initiating combustion in a first engine cylinder;
- and
- skipping combustion, according to an order of combustion of the engine, in at least one cylinder of the engine during the engine restart after initiating combustion in the first cylinder.
A method for starting an engine coupled to an automatic transmission, comprising:
- stopping the engine;
- during a first condition, automatically initiating an engine restart with the transmission in gear and initiating combustion in a first cylinder of the engine, a speed of the engine controlled by adjusting one of at least engine spark timing, intake manifold pressure, or engine fuel amount;
- and
- during a second condition, different than the first condition, automatically initiating an engine restart with the transmission in gear and initiating combustion in a first cylinder of the engine, and skipping combustion, according to an order of combustion of the engine, in at least one cylinder of the engine during the engine restart after initiating combustion in the first cylinder.
A method for starting an engine, comprising:
- stopping the engine while an automatic transmission coupled to the engine is in a drive gear;
- automatically initiating an engine restart and initiating combustion in a first engine cylinder with multiple fuel injections while the automatic transmission is in gear;
- and
- skipping combustion, according to an order of combustion of the engine, in an engine cylinder during the engine restart after initiating combustion in the first cylinder.
Dependencies are inferred from the claim text.