METHOD AND APPARATUS FOR MINIMIZING ENGINE AIR TIP-IN NOISE
    1.
    发明申请
    METHOD AND APPARATUS FOR MINIMIZING ENGINE AIR TIP-IN NOISE 有权
    用于最小化发动机空气提示噪声的方法和装置

    公开(公告)号:US20060042592A1

    公开(公告)日:2006-03-02

    申请号:US10930378

    申请日:2004-08-31

    IPC分类号: F02D11/10 F02D9/08

    摘要: A method for throttle progression control to minimize tip-in noise of an internal combustion engine by allowing the engine to receive only the required air for the commanded engine acceleration. The method comprises the steps of a) providing an electronically controlled throttle body and valve, b) providing an electronic control module, c) determining the engine air flow required to satisfy a desired engine acceleration, d) providing an input to the electronic control module corresponding to the engine air flow required, e) programming the electronic control module to limit the inflow of air during engine acceleration to match the engine air flow required for achieving said desired engine acceleration, and f) actuating the throttle body and valve to provide the limited air flow through the throttle body during the desired engine acceleration.

    摘要翻译: 一种用于通过允许发动机仅接收所指示的发动机加速所需的空气来最小化内燃机的尖端噪声的油门进行控制的方法。 该方法包括以下步骤:a)提供电子控制的节气门体和阀,b)提供电子控制模块,c)确定满足期望的发动机加速度所需的发动机气流,d)向电子控制模块 对应于所需的发动机气流,e)对电子控制模块进行编程,以限制发动机加速期间的空气流入,以匹配实现所述期望发动机加速度所需的发动机气流,以及f)致动节气门阀体和阀门, 在期望的发动机加速期间限制通过节气门体的空气流。

    Air flow measurement system having reduced sensitivity to flow field changes
    2.
    发明申请
    Air flow measurement system having reduced sensitivity to flow field changes 失效
    气流测量系统对流场变化灵敏度降低

    公开(公告)号:US20050262937A1

    公开(公告)日:2005-12-01

    申请号:US10854133

    申请日:2004-05-25

    IPC分类号: G01F1/68 G01F1/684 G01F5/00

    CPC分类号: G01F5/00 G01F1/6842

    摘要: A system for measuring air flow rate in a duct includes an air flow sensor and an air flow conditioning device for collecting and accelerating a portion of the total air stream to the sensor, which may be means as known in the art. The conditioning device includes two opposed converging walls defining a nozzle, preferably a venturi, the sensor being disposed in the throat of the nozzle. The surfaces of the venturi walls are textured to trip the boundary layer near the wall surface into turbulence to maintain attachment of flowing air to the walls even when the angle of attack of the air is significantly non-axial. The wall texturing may be random or may be an organized pattern. A further embodiment includes a second flow conditioner/sensor in parallel with the first whereby an averaged flow measurement is taken for a more accurate reading.

    摘要翻译: 用于测量管道中的空气流速的系统包括空气流量传感器和用于收集和加速部分总气流到传感器的空气流量调节装置,其可以是本领域已知的装置。 调节装置包括限定喷嘴(优选文丘里管)的两个相对的会聚壁,该传感器设置在喷嘴的喉部中。 文丘里壁的表面被纹理化,以将壁面附近的边界层跳到湍流中,以保持流动的空气附着到墙上,即使当空气的迎角显着地不轴向时。 墙纹理可以是随机的或可以是有组织的模式。 另一个实施例包括与第一流动调节器/传感器平行的第二流量调节器/传感器,由此获得平均流量测量以获得更准确的读数。