CPS knock detection system
First Claim
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1. A control system comprising:
- a cylinder pressure sensor (CPS) that senses a cylinder pressure of an engine and generates a CPS signal based on the cylinder pressure;
a CPS failure detection module that selectively generates a failure signal based on characteristics of the CPS signal in a knock frequency range; and
a status detection module that generates a CPS status signal based on the CPS signal and the failure signal.
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Abstract
A control system includes a cylinder pressure sensor (CPS) that senses a cylinder pressure of an engine and generates a CPS signal based on the cylinder pressure. A CPS failure detection module selectively generates a failure signal based on characteristics of the CPS signal in a knock frequency range. A status detection module generates a CPS status signal based on the CPS signal and the failure signal.
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Citations
18 Claims
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1. A control system comprising:
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a cylinder pressure sensor (CPS) that senses a cylinder pressure of an engine and generates a CPS signal based on the cylinder pressure; a CPS failure detection module that selectively generates a failure signal based on characteristics of the CPS signal in a knock frequency range; and a status detection module that generates a CPS status signal based on the CPS signal and the failure signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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using a cylinder pressure sensor (CPS), sensing a cylinder pressure of an engine and generating a CPS signal based on the cylinder pressure; selectively generating a failure signal based on characteristics of the CPS signal in a knock frequency range; and generating a CPS status signal based on the CPS signal and the failure signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification