METHOD FOR IMPROVING ENGINE STARTING
    52.
    发明申请
    METHOD FOR IMPROVING ENGINE STARTING 有权
    改进发动机启动的方法

    公开(公告)号:US20130146024A1

    公开(公告)日:2013-06-13

    申请号:US13324923

    申请日:2011-12-13

    IPC分类号: F02P5/04 F02D45/00

    摘要: A method for improving exhaust after treatment initial warm up during engine starting is presented. In one example, the method adjusts an engine air flow amount to a level where a desired substantially constant heat flux is provided by the engine to an exhaust after treatment device. The method may reduce fuel consumption and a need for a vacuum pump to provide vacuum to vacuum consumers of a vehicle during exhaust after treatment heating.

    摘要翻译: 提出了一种改善发动机启动后初始加热后排气的方法。 在一个示例中,该方法将发动机空气流量调整到由发动机向处理装置后排气提供期望的基本上恒定的热通量的水平。 该方法可以降低燃料消耗,并且需要真空泵在处理加热之后的排气期间为车辆的真空消耗者提供真空。

    Engine Vacuum System
    59.
    发明申请
    Engine Vacuum System 审中-公开
    发动机真空系统

    公开(公告)号:US20110203269A1

    公开(公告)日:2011-08-25

    申请号:US13050647

    申请日:2011-03-17

    IPC分类号: B60T13/57 F15D1/00

    CPC分类号: B60T13/52 Y10T137/0318

    摘要: A vacuum pump onboard a vehicle provides vacuum for a brake booster and to control the electronic vacuum regulation valve (EVRV) valve of a wastegate on a turbocharger. Commands to the EVRV are based on an operating condition of an engine and the vacuum level in the vacuum system. In one example, a vacuum sensor is provided to determine vacuum proximate the EVRV. In another example, the vacuum proximate the EVRV is modeled based on the vacuum at the brake booster, which may be determined by a vacuum sensor coupled to the brake booster.

    摘要翻译: 车辆上的真空泵为制动助力器提供真空并且控制涡轮增压器上的废气门的电子真空调节阀(EVRV)阀。 EVRV的命令基于发动机的操作条件和真空系统中的真空水平。 在一个示例中,提供真空传感器以确定靠近EVRV的真空。 在另一个示例中,基于制动助力器处的真空来建模靠近EVRV的真空,其可以由耦合到制动助力器的真空传感器确定。