Vehicle thermal management systems and methods
US9975399B2 · kind B2 · utility
1Cited by
1References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2015 |
| Grant date | May 22, 2018 |
| Priority date | — |
| Expiry date | Jun 13, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/2262
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A vehicle climate control system includes a heat exchanger to heat ambient air using engine waste heat, and a plurality of positive temperature coefficient (PTC) heating elements to heat air passed through the heat exchanger. The vehicle also includes a controller programmed to, while the vehicle is driven without engine propulsion, issue a command to sequentially de-energize the PTC heating elements before an upcoming engine activation. The sequential de-energization of the PTC heating elements is performed according to a schedule that is based upon a power surge dissipation time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.