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US 9,068,522 B2Granted
Method for diagnosing an engine
AssigneeFord Global Technologies, LLC
InventorsGregory Patrick McConville, Allan Roy Gale
Life of this patent
Estimating the term…
Abstract
A method for operating an engine in response to a waste gate position is presented. In one example, the method adjusts an actuator to reduce the possibility of misfire in an engine cylinder in response to waste gate position. In this way, it may be possible to adjust engine operation for varying engine operating conditions.
Claims17
A method for operating an engine, comprising:
- adjusting an engine actuator to adjust a pressure in a cylinder in response to a position of a waste gate during a blow-down portion in a cycle of the cylinder indicative of an engine misfire during an engine start, the position indicated by waste gate actuator current.
A method for operating an engine with a turbocharger, comprising:
- during engine starting, identifying a cylinder misfire responsive to current of a waste gate actuator of the turbocharger detected during a cylinder blow-down;
- and
- adjusting a fuel injection amount injected to a subsequent cylinder via an injector responsive to the identified cylinder misfire.
A method for operating an engine, comprising:
- generating a misfire during a cycle of a cylinder;
- adjusting a current supplied to a waste gate actuator in response to the misfire to correct a position of a waste gate during a blow-down portion in the cycle of the cylinder;
- and
- adjusting fuel injection amount responsive to the current to reduce a possibility of misfire in the cylinder during a subsequent cycle of the cylinder.
1 more element
Dependencies are inferred from the claim text.