Invention Grant
US08545368B1 Regulation of a machine with a continuously variable transmission and service brakes
有权
对具有无级变速器和行车制动器的机器进行调节
- Patent Title: Regulation of a machine with a continuously variable transmission and service brakes
- Patent Title (中): 对具有无级变速器和行车制动器的机器进行调节
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Application No.: US13666210Application Date: 2012-11-01
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Publication No.: US08545368B1Publication Date: 2013-10-01
- Inventor: Kevin Davis , Adam Nackers
- Applicant: Caterpillar Inc.
- Applicant Address: US IL Peoria
- Assignee: Caterpillar Inc.
- Current Assignee: Caterpillar Inc.
- Current Assignee Address: US IL Peoria
- Agency: Leydig, Voit & Mayer
- Main IPC: B60W10/06
- IPC: B60W10/06 ; B60W10/10 ; B60W10/18

Abstract:
A method regulates a machine having a continuously variable transmission (CVT) and service brakes in a manner to reduce power transmission through the applied brakes. The method utilizes an unaltered torque-to-speed curve that relates the torque output to the speed output of the CVT. An under-run curve may be applied to the torque-to-speed curve and that corresponds to a target speed. The method may receive an operator input signal indicative of a braking event. In response, the method may shift the torque-to-speed curve to limit the output torque available. The method may also adjust the under-run curve in a manner that maintains correspondence with the target speed.
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