System for measuring amount of particulates exhausted from vehicle engine
    44.
    发明授权
    System for measuring amount of particulates exhausted from vehicle engine 失效
    用于测量从车辆发动机排出的颗粒物量的系统

    公开(公告)号:US4633706A

    公开(公告)日:1987-01-06

    申请号:US666856

    申请日:1984-10-31

    摘要: A system for measuring amounts of particulates exhausted from a vehicle internal combustion engine, such as a diesel engine, has a dilution tunnel into which exhaust gas is introduced and mixed with and diluted by clear air. One part of the diluted gas is introduced into a first sampling arrangement in which a first filter is provided for collecting particulates of dry soot and another part of the diluted gas is introduced into a second sampling arrangement in which a second filter is provided for collecting particulates of soluble organic fraction (SOF). The amounts of dry soot and SOF are calculated in a real time manner in accordance with the pressure drops across the filters on the basis of the time differential of the signals output from pressure transducers provided for each filter.

    摘要翻译: 用于测量从诸如柴油发动机的车辆内燃机排出的颗粒的量的系统具有引入废气的稀释通道,与稀释空气混合并稀释。 稀释气体的一部分被引入到第一采样装置中,其中提供第一过滤器用于收集干烟灰的颗粒,另一部分稀释气体被引入第二采样装置,其中提供第二过滤器用于收集颗粒 的可溶性有机部分(SOF)。 根据从每个过滤器提供的压力传感器输出的信号的时间差,实时计算干烟尘和SOF的量,根据过滤器上的压降,实时计算。

    Device for controllably heating oxygen sensor
    46.
    发明授权
    Device for controllably heating oxygen sensor 失效
    用于可控制加热氧气传感器的装置

    公开(公告)号:US4538575A

    公开(公告)日:1985-09-03

    申请号:US511235

    申请日:1983-07-06

    CPC分类号: F02D41/1494 F02D41/1456

    摘要: Pulse current having a certain cycle is supplied to an electric heater in an oxygen sensor for exhaust gas. Duty ratio of this pulse current is controlled in relation to the amplitude of voltage and current applied to the heater to thereby maintain power consumption of the heater per unit time at a constant one. Also this duty may be corrected on the basis of parameters for running an internal combustion engine.

    摘要翻译: 具有一定周期的脉冲电流被供给到用于废气的氧传感器中的电加热器。 相对于施加到加热器的电压和电流的幅度来控制该脉冲电流的占空比,从而将加热器的功率消耗保持在恒定值。 也可以基于运行内燃机的参数来校正该责任。