Engine cooling-passenger heating system
US4373666A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1981 |
| Grant date | Feb 15, 1983 |
| Priority date | — |
| Expiry date | Jun 26, 2001 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00485
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An engine cooling-passenger heating system is disclosed having an integrated multi-mode valve arrangement which operates in a no-heat mode to bypass all available flow to the passenger heater past the heater for continued circulation without disruption in the engine cooling system and further operates in a heat mode to effect flow through the heater while also being responsive to the pressure drop across the heater above a predetermined value to also simultaneously establish in the heat mode a restricted connection bypassing a portion of the available coolant to the heater to thereby limit the flow through the heater as well as the pressure differential acting thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.