Exhaust emission control device of internal combustion engine
    3.
    发明授权
    Exhaust emission control device of internal combustion engine 有权
    内燃机废气排放控制装置

    公开(公告)号:US06487851B1

    公开(公告)日:2002-12-03

    申请号:US09701972

    申请日:2000-12-06

    IPC分类号: F01N300

    摘要: An NOx sensor 27 detects the concentration of NOx released from an occlusion type NOx catalyst 25 into the atmosphere. Based on the output of the NOx sensor 27, a total NOx discharge A is computed. When the total NOx discharge A reaches an NOx emission judgment amount A0, corresponding to an NOx emission judgment amount designated by NOx emission regulations, before a distance traveled C reaches a predetermined distance traveled C0, an exhaust air-fuel ratio is changed to a rich air-fuel ratio to release NOx from the occlusion type NOx catalyst 25 efficiently. Then, the exhaust air-fuel ratio is changed to a stoichiometric air-fuel ratio to purify and reduce NOx by a three-way catalyst function.

    摘要翻译: NOx传感器27检测从堵塞型NOx催化剂25释放到大气中的NOx浓度。 基于NOx传感器27的输出,计算出总的NOx排放量A. 当总NOx排放量A达到与NOx排放规定指定的NOx排放判定量相对应的NOx排放量判定量A0,在行驶距离C达到规定行驶距离C0之前,排气空燃比变为浓 空燃比有效地从堵塞型NOx催化剂25释放NOx。 然后,排气空燃比变为理论空燃比,通过三元催化剂功能净化和还原NOx。

    Running control method and running control system
    4.
    发明授权
    Running control method and running control system 失效
    运行控制方法和运行控制系统

    公开(公告)号:US4911259A

    公开(公告)日:1990-03-27

    申请号:US304369

    申请日:1989-01-30

    IPC分类号: B60K31/04

    CPC分类号: B60K31/047 B60W2530/16

    摘要: A running control method and a running control system for a vehicle to control the engine output according to the effects of slope, wind, and change in vehicle weight, in which a reference traction force is determined as the sum of a mechanism friction, an acceleration force, and an air drag, the difference between an actually measured total traction force an the reference traction force is determined to obtain an environmental effect value. The environmental effect value represents an increase or decrease in traction force with respect to that in a flat, windless road for a standard vehicle weight. A throttle valve or a fuel injection control governer is feedback-controlled according to the environmental effect value, thereby improving the control response.

    摘要翻译: 一种用于车辆的行驶控制方法和行驶控制系统,其根据倾斜度,风速和车辆重量变化来控制发动机输出,其中参考牵引力被确定为机构摩擦,加速度 力和空气阻力,确定实际测量的总牵引力与参考牵引力之间的差以获得环境效应值。 环境效应值表示相对于用于标准车辆重量的平坦无风道路中的牵引力的增加或减小。 节气门或燃油喷射控制器根据环境影响值进行反馈控制,从而提高控制响应。

    Air fuel ratio detecting device
    9.
    发明授权
    Air fuel ratio detecting device 失效
    空燃比检测装置

    公开(公告)号:US4891122A

    公开(公告)日:1990-01-02

    申请号:US933850

    申请日:1986-11-24

    CPC分类号: G01N27/417 G01N27/4065

    摘要: The invention provides a device for detecting an air fuel ratio of an air fuel mixture supplied to the combustion apparatus of an internal combustion engine. The device comprises a sensor cell for developing an electric signal in response to the difference between the concentration of oxygen an exhaust gas and the concentration of oxygen in a reference gas, a controlling means for developing an electric control signal having a polarity determined from an output of the sensor cell, a pump cell for moving oxygen ions in response to an electric control signal received from the controlling means, a control current detecting means for detecting control current flow between the controlling means and the pump cell, an air fuel ratio detecting means for detecting the air fuel ratio from the control current flow, and a stoichiometric air fuel ratio detecting means for detecting the direction of the control current flow so as to determine the stoichiometric air fuel ratio.

    摘要翻译: 本发明提供了一种用于检测供应到内燃机的燃烧装置的空气燃料混合物的空燃比的装置。 该装置包括用于响应于废气中的氧气浓度与参考气体中的氧浓度之间的差异而发展电信号的传感器单元,用于开发具有从输出端确定的极性的电控制信号的控制装置 传感器单元的响应于从控制装置接收到的电控信号移动氧离子的泵室;控制电流检测装置,用于检测控制装置和泵室之间的控制电流;空燃比检测装置 用于检测来自控制电流的空燃比,以及化学计量空燃比检测装置,用于检测控制电流的方向,以便确定理论空燃比。

    Intake port device
    10.
    发明授权
    Intake port device 失效
    进口端口设备

    公开(公告)号:US4850317A

    公开(公告)日:1989-07-25

    申请号:US163963

    申请日:1987-12-17

    摘要: An intake port device comprises an intake port (9) formed by a straight part (13) and a helical part (15), and a valve (17) disposed adjacent to the inlet of the intake port. In order that intake air flow having a large swirl ratio can be supplied to an engine without being encountered with a large resistance even in a light-loaded condition of the engine, the valve (17) is held in its closed position without causing any sharp decrease in the coefficient of intake air flow when closed. In a modification of the intake port device, the valve (17) holds open the lower half of the intake port 9 in its closed position, so that intake air flow having a large swirl ratio can be supplied without being encounted with a large resistance even when the load of the engine is light. In another modification of the intake port device, the free end of the valve (17) is bent and deformed in the downstream direction of intake air so that the flow of intake air may not be encountered with a large resistance.

    摘要翻译: PCT No.PCT / JP87 / 00202 Sec。 371日期1987年12月17日第 102(e)1987年12月17日PCT PCT 1987年4月1日提交PCT公布。 公开号WO87 / 05965 日期为1987年10月8日。进气口装置包括由直的部分(13)和螺旋部分(15)形成的进气口(9)和邻近进气口的入口设置的阀(17)。 为了即使在发动机的轻负载状态下也可以向发动机提供具有大涡流比的进气流而不会遇到大的阻力,阀17保持在其关闭位置,而不会产生任何尖锐的 关闭时进气流量系数下降。 在进气口装置的改型中,阀17将进气口9的下半部保持在其关闭位置,使得可以提供具有大涡流比的进气流,而不会被加大甚至阻力 当发动机的负载较轻时。 在进气口装置的另一变型中,阀(17)的自由端在进气的下游方向上弯曲和变形,使得可能不会以较大的阻力遇到进气的流动。