FAULT DETECTION AND MITIGATION IN HYBRID DRIVE SYSTEM
First Claim
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1. A detection method for detecting a barrel leak in a pump system, the method comprising:
- obtaining a data signal from a filter pressure sensor of the pump system;
obtaining a data signal from a pump speed sensor of the pump system;
determining a rotation frequency of a pump of the pump system;
filtering the data signal received from the filter pressure sensor based on the rotation frequency of the pump to obtain a filtered signal; and
analyzing the filtered signal to determine whether the filtered signal exceeds a predetermined threshold.
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Abstract
Fault detection and response systems and processes can be used for pumps, e.g., pump/motors used in hybrid vehicles. The fault detection systems determine when certain operating conditions, which may affect the proper operation of the system, occur. The response systems take appropriate action based on which fault conditions are triggered. Example fault detection systems and processes include detection systems for different types of leaks, sensor malfunctions, or operation errors.
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Citations
5 Claims
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1. A detection method for detecting a barrel leak in a pump system, the method comprising:
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obtaining a data signal from a filter pressure sensor of the pump system; obtaining a data signal from a pump speed sensor of the pump system; determining a rotation frequency of a pump of the pump system; filtering the data signal received from the filter pressure sensor based on the rotation frequency of the pump to obtain a filtered signal; and analyzing the filtered signal to determine whether the filtered signal exceeds a predetermined threshold. - View Dependent Claims (2, 3, 4, 5)
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Specification