Control system for opportunistic heating of transmission fluid
US11359714B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2020 |
| Grant date | Jun 14, 2022 |
| Priority date | — |
| Expiry date | Aug 21, 2040 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/0417
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A thermal management for a hybrid vehicle is provided. The system includes an engine coolant to cabin air heat exchanger in a first heat exchange loop and being operably coupled to an engine coolant circuit and cabin air in the vehicle, respectively, a transmission fluid to engine coolant heat exchanger in a second heat exchange loop and being operably coupled to a transmission fluid circuit and the engine coolant circuit, respectively, a control valve operable to control a flow of engine coolant through at least the second heat exchange loop, and a control module configured to selectively operate the control valve to initiate or restrict the flow through the second heat exchange loop to provide heat to the transmission fluid circuit based on ambient temperature, transmission fluid temperature and engine coolant temperature. The control module is further configured to enable control functions associated with transmission operation and hybrid functions based on the transmission fluid temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.