Vehicle surge and spark timing control
First Claim
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1. A method for operating a vehicle engine having a combustion chamber, comprising:
- controlling vehicle stability in response to acceleration sensors sensing yaw and lateral acceleration of the vehicle; and
adjusting spark timing in the combustion chamber of the engine in response to a knock indication, and further in response to a longitudinal acceleration component to reduce surge, the longitudinal acceleration component based on the acceleration sensors.
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Abstract
A method is described for operating an engine of a vehicle, the engine having a combustion chamber. The method may include controlling a stability of the vehicle in response to a vehicle acceleration; and adjusting spark timing in the combustion chamber of the engine in response to a knock indication, and further adjusting spark timing in response to the vehicle acceleration to reduce surge.
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Citations
17 Claims
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1. A method for operating a vehicle engine having a combustion chamber, comprising:
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controlling vehicle stability in response to acceleration sensors sensing yaw and lateral acceleration of the vehicle; and adjusting spark timing in the combustion chamber of the engine in response to a knock indication, and further in response to a longitudinal acceleration component to reduce surge, the longitudinal acceleration component based on the acceleration sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for a vehicle including an engine, the engine having one or more cylinders, comprising:
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a vehicle acceleration sensor coupled in the vehicle; a wheel speed sensor coupled to a wheel of the vehicle; a wheel brake mechanism coupled to the wheel of the vehicle; a steering angle sensor; and a control system for adjusting the wheel brake mechanism in response to the steering angle sensor and the vehicle acceleration sensor to improve the stability of the vehicle during traveling conditions of the vehicle, the control system further filtering the acceleration sensor to pass frequencies at or around a surge frequency, and adjusting spark timing in the one or more cylinders of the engine in response to whether a magnitude of the acceleration at the passed frequencies is greater than a threshold magnitude. - View Dependent Claims (10, 11, 12, 13)
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14. A method for operating an engine of a vehicle, the engine having a combustion chamber, comprising:
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controlling a stability of the vehicle in response to a vehicle longitudinal acceleration indicated from an accelerometer coupled in the vehicle; adjusting spark timing in the combustion chamber of the engine in response to feedback from a knock indication; and when vehicle surge is identified by the vehicle acceleration from the accelerometer, adjusting spark timing to retard spark timing by a predetermined amount and reducing exhaust gas recirculation, the predetermined amount independent from the knock feedback. - View Dependent Claims (15, 16, 17)
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Specification