Monitoring and prognostic system and method for determining a remaining useful life of lubricant in wet clutch transmissions
First Claim
1. A system for monitoring a lubricant in a transmission, the system comprising:
- a first clutch comprising a driven portion and a non-driven portion forming a portion of the transmission;
a first speed sensor positioned adjacent the first clutch, the first speed sensor configured to detect a rotational difference between the driven portion and the non-driven portion of the first clutch;
a temperature sensor disposed within the transmission, the temperature sensor configured to measure a temperature of the lubricant; and
a processing unit in communication with the first speed sensor and the temperature sensor,wherein in response to information from the first speed sensor and the temperature sensor, the processing unit determines a condition of the lubricant used in the transmission.
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Accused Products
Abstract
A system and a method for monitoring a lubricant in a transmission are provided. The system comprises a first speed sensor, a temperature sensor, and a processing unit. The first speed sensor is positioned adjacent a first clutch, which forms a portion of the transmission. The first speed sensor is configured to detect a rotational difference between portions of the first clutch. The temperature sensor is disposed within the transmission. The temperature sensor is configured to measure a temperature of the lubricant. The processing unit is in communication with the first speed sensor and the temperature sensor. In response to information from the first speed sensor and the temperature sensor, the processing unit determines a condition of the lubricant used in the transmission.
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Citations
18 Claims
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1. A system for monitoring a lubricant in a transmission, the system comprising:
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a first clutch comprising a driven portion and a non-driven portion forming a portion of the transmission; a first speed sensor positioned adjacent the first clutch, the first speed sensor configured to detect a rotational difference between the driven portion and the non-driven portion of the first clutch; a temperature sensor disposed within the transmission, the temperature sensor configured to measure a temperature of the lubricant; and a processing unit in communication with the first speed sensor and the temperature sensor, wherein in response to information from the first speed sensor and the temperature sensor, the processing unit determines a condition of the lubricant used in the transmission. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for monitoring a lubricant in a transmission, the steps of the method comprising:
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providing a first speed sensor positioned adjacent a first clutch forming a portion of the transmission, the first clutch comprising a driven portion and a non-driven portion; providing a temperature sensor disposed within the transmission; providing a processing unit in communication with the first speed sensor and the temperature sensor; detecting a rotational difference between the driven portion and the non-driven portion of the first clutch using the first speed sensor; measuring a temperature of the lubricant using the temperature sensor; and determining a condition of the lubricant used in the transmission using the processing unit using the information from the first speed sensor and the temperature sensor. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A method for monitoring a lubricant in a transmission, the steps of the method comprising:
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providing a first speed sensor positioned adjacent a first clutch forming a portion of the transmission; providing a second speed sensor positioned adjacent a second clutch forming a portion of the transmission; providing a temperature sensor disposed within the transmission; providing a processing unit in communication with the first speed sensor, the second speed sensor, and the temperature sensor; detecting a rotational difference between portions of the first clutch using the first speed sensor; detecting a rotational difference between portions of the second clutch using the second speed sensor; measuring a temperature of the lubricant using the temperature sensor; and determining a viscosity of the lubricant used in the transmission using the processing unit using the information from the first speed sensor, the second speed sensor, and the temperature sensor.
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Specification