Regulation of a machine with a continuously variable transmission and service brakes
US8545368B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2012 |
| Grant date | Oct 1, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60W2710/105
- WIPO fieldTransport
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.