Wastegate control systems and methods for engine sound emission
AssigneeGM Global Technology Operations LLC
InventorsMaqsood Rizwan Ali Khan, Mark R. Claywell, Scott M. Reilly
Life of this patent
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Abstract
A turbocharger control system of a vehicle includes a trigger module that generates a trigger signal when a transmission of the vehicle is in one of (i) park and (ii) neutral. A wastegate target module, in response to the generation of the trigger signal, sets a target opening of a turbocharger wastegate to a predetermined opening and independently of a position of an accelerator pedal. The predetermined opening is greater than zero percent opening of the turbocharger wastegate. A wastegate actuator module actuates the turbocharger wastegate based on the target opening of the turbocharger wastegate.
Claims18
A turbocharger control system of a vehicle, comprising:
- a trigger module that generates a trigger signal when a transmission of the vehicle is in park,
- wherein the trigger module also generates the trigger signal when all of:
- the transmission is in a reverse drive gear;
- a clutch pedal is actuated away from a predetermined resting clutch pedal position;
- and
- a longitudinal acceleration of the vehicle is between a first predetermined acceleration and a second predetermined acceleration;
- a wastegate target module that, in response to the generation of the trigger signal, sets a target opening of a turbocharger wastegate to a predetermined opening and independently of a position of an accelerator pedal,
- wherein the predetermined opening is greater than zero percent opening of the turbocharger wastegate;
- and
- a wastegate actuator module that actuates the turbocharger wastegate based on the target opening of the turbocharger wastegate.
A turbocharger control method for a vehicle, comprising:
- generating a trigger signal when a transmission of the vehicle is in park;
- generating the trigger signal also when all of:
- the transmission is in a reverse drive gear;
- a clutch pedal is actuated away from a predetermined resting clutch pedal position;
- and
- a longitudinal acceleration of the vehicle is between a first predetermined acceleration and a second predetermined acceleration;
- in response to the generation of the trigger signal, setting a target opening of a turbocharger wastegate to a predetermined opening and independently of a position of an accelerator pedal,
- wherein the predetermined opening is greater than zero percent opening of the turbocharger wastegate;
- and
- actuating the turbocharger wastegate based on the target opening of the turbocharger wastegate.
Dependencies are inferred from the claim text.