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    • 4. 发明公开
    • VEHICLE HVAC SYSTEM WITH RAM PRESSURE CONTROL
    • 具有RAM压力控制的车辆HVAC系统
    • EP2678176A1
    • 2014-01-01
    • EP12749513.3
    • 2012-01-03
    • Honda Motor Co., Ltd.
    • KANEMARU, JunichiKAKIZAKI, Shinji
    • B60H1/26
    • B60H1/00471B60H1/00678B60H1/00764B60H1/00849B60H2001/00085
    • A blower unit for a vehicle HVAC system, which is operable in one of a fresh air mode, a recirculation mode and a mixture mode, comprises a housing defining an exterior fresh air intake aperture and an interior recirculation air intake aperture. A first door is operably associated with the exterior air intake aperture for selectively opening and closing the exterior air intake aperture. A second door operably associated with the interior air intake aperture for selectively opening and closing the interior air intake aperture. In the mixture mode, the first door is configured to control ram pressure as vehicle speed increases to maintain a predetermined airflow ratio between fresh air flowing into the housing via the exterior air intake aperture and recirculation air flowing into the housing via the interior air intake aperture.
    • 用于可在新鲜空气模式,再循环模式和混合模式中的一种下操作的车辆HVAC系统的鼓风机单元包括限定外部新鲜空气入口孔和内部再循环空气入口孔的壳体。 第一门与外部进气孔可操作地相关联,用于选择性地打开和关闭外部进气孔。 可操作地与内部进气孔相关联的第二门,用于选择性地打开和关闭内部进气孔。 在混合模式中,第一门被配置为在车辆速度增加时控制冲压压力以维持经由外部进气孔流入壳体的新鲜空气与经由内部进气孔流入壳体的再循环空气之间的预定空气流量比 。