Partial air inlet control strategy for air conditioning system
US10639961B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 7, 2010 |
| Grant date | May 5, 2020 |
| Priority date | — |
| Expiry date | Dec 30, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H1/00785
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A system and method of selecting air intake between 100% fresh air mode and 100% recirculated air mode for optimum heating/cooling performance, fuel economy and/or high voltage (HV) battery power consumption is disclosed. The system and method includes a partial recirculation control strategy in which the air inlet door is moved progressively to any position by taking into account cooling/heating loads and cabin fogging probability. As cooling/heating loads increase the air inlet door moves toward 100% recirculation mode. As fogging probability increases the air inlet door moves toward 100% fresh air mode. By selectively choosing a position between 100% recirculation and 100% fresh air, fuel economy and/or HV battery power consumption is optimized without compromising passenger comfort or causing fogging on interior glass surfaces. In cooling applications the compressor load is minimized and air conditioning performance is improved due to the reduced evaporator cooling load. The direct result of this improvement is increased fuel economy in the case of the internal combustion vehicle, reduced engine on time in the case of the hybrid electric vehicle (due to reduced HV battery power…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.