Brake mechanism for hybrid vehicle engine
US9995390B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 3, 2016 |
| Grant date | Jun 12, 2018 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S903/947
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A hybrid vehicle powertrain assembly includes a combustion engine, an electric machine, an input shaft, a ratchet mechanism, and a controller. The input shaft selectively couples the engine and electric machine. The ratchet mechanism includes a base integrated with a transmission housing, a camwheel fixedly coupled to the input shaft, a pawl, and an actuator to move the pawl. The controller is programmed to, in response to receipt of an engine brake command, output an engagement command to the actuator to move the pawl toward the camwheel for engagement to prevent the input shaft from spinning. A method for controlling a hybrid vehicle powertrain is also provided herein. The method includes, responsive to receipt of an engine brake command, outputting via a controller a command for a ratchet mechanism to engage an input shaft coupled to an engine to prevent the input shaft from spinning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.