Engine turbine temperature control system
AssigneeGeneral Motors Corporation
InventorsVictoriano Ruiz, Douglas J. Babcock
Life of this patent
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Abstract
A turbine temperature control (TTC) system for regulating operation of an engine to control a temperature of a forced air induction device. The system includes a sensor that is responsive to an exhaust gas temperature and that generates a signal. A control module determines a temperature based on the temperature signal and compares the temperature to a threshold temperature. The control module regulates operation of the engine to decrease the temperature when the temperature exceeds the threshold temperature.
Claims11
A method of regulating a temperature of a forced air induction device driven by exhaust gas generated by an engine, comprising:
- determining an exhaust gas temperature;
- comparing said temperature to a threshold temperature;
- adjusting an air-to-fuel ratio of said engine to decrease said temperature when said temperature exceeds said threshold temperature;
- adjusting a spark timing of said engine to decrease said temperature when said air-to-fuel ratio has been adjusted to a maximum limit and said temperature exceeds said threshold temperature;
- and
- reducing a charge pressure generated by said forced air induction device to decrease said temperature when said spark timing has been adjusted to a maximum limit and said temperature exceeds said threshold temperature.
A method of regulating a temperature of a forced air induction device driven by exhaust gas generated by an engine, comprising:
- determining an exhaust gas temperature;
- comparing said temperature to a threshold temperature;
- adjusting an air-to-fuel ratio of said engine to decrease said temperature when said temperature exceeds said threshold temperature;
- adjusting a spark timing of said engine to decrease said temperature when said air-to-fuel ratio has been adjusted to a maximum limit and said temperature exceeds said threshold temperature;
- regulating operation of said engine to increase said temperature when said temperature is below said threshold temperature;
- and
- adjusting said charge pressure to increase said temperature when said temperature is below said threshold temperature.
Turbine temperature control system for regulating operation of an engine and a forced air induction device, comprising:
- a sensor that is responsive to an exhaust gas temperature and that generates a signal;
- and
- a control module that determines a temperature based on said signal, that compares said temperature to a threshold temperature, that adjusts an air-to-fuel ratio of said engine to decrease said temperature when said temperature exceeds said threshold temperature, that adjusts a spark timing of said engine to decrease said temperature when said air-to-fuel ratio has been adjusted to a maximum limit and said temperature exceeds said threshold temperature, and that reduces a charge pressure generated by said forced air induction device to decrease said temperature when said spark timing has been adjusted to a maximum limit and said temperature exceeds said threshold temperature.
Dependencies are inferred from the claim text.