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    • 27. 发明申请
    • DIAGNOSTIC DEVICE FOR INTERNAL COMBUSTION ENGINE
    • 内燃机诊断装置
    • US20080215205A1
    • 2008-09-04
    • US12019099
    • 2008-01-24
    • Yasuhiro KARIYATsukasa Kuboshima
    • Yasuhiro KARIYATsukasa Kuboshima
    • F01N11/00F01N7/00
    • F01N11/002F01N2560/08Y02T10/47
    • A diagnostic device of an internal combustion engine diagnoses a condition of a differential pressure sensor. The sensor in a normal condition detects a differential pressure of an exhaust gas between upstream and downstream sides of a diesel particulate filter disposed in an exhaust system of the engine. The sensor in a fault condition detects no differential pressure of the exhaust gas. The device has a block obtaining a first signal from the sensor when the engine is operated in a low flow rate region of the exhaust gas and obtaining a second signal from the sensor when the engine is operated in a high flow rate region of the exhaust gas. A diagnostic block of the device judges from a difference between levels of the first and second signals whether the sensor is in the normal or fault condition.
    • 内燃机的诊断装置诊断压差传感器的状况。 传感器在正常状态下检测设置在发动机的排气系统中的柴油机微粒过滤器的上游侧和下游侧之间的排气压差。 故障状态下的传感器不会检测排气的压差。 当发动机在废气的低流量区域中操作时,该装置具有从传感器获得第一信号的块,并且当发动机在废气的高流量区域中操作时获得来自传感器的第二信号 。 设备的诊断块根据第一和第二信号的电平之间的差异来判断传感器是处于正常还是故障状态。
    • 29. 发明申请
    • Exhaust gas cleaning apparatus having particulate collector for use in automotive vehicle
    • 具有用于机动车辆的微粒收集器的排气净化装置
    • US20070214776A1
    • 2007-09-20
    • US11635060
    • 2006-12-07
    • Yasuhiro KariyaTsukasa KuboshimaMasao Sawamura
    • Yasuhiro KariyaTsukasa KuboshimaMasao Sawamura
    • F01N3/00
    • F01N3/021F01N11/00Y02T10/20Y02T10/47
    • An exhaust gas cleaning apparatus of the present invention is advantageously used in a diesel engine. A collector for collecting particulates contained in the exhaust gas is disposed in an exhaust pipe of the engine. Damages in the collector are detected based on a pressure difference between an inlet and an outlet of the collector. In order to correctly detect the damages based on the pressure difference, an exhaust gas volume flowing through the collector is increased to a target volume by raising exhaust gas temperature. The exhaust gas temperature is raised by injecting fuel into the engine at a timing when an engine output is not increased by such fuel injection. The pressure difference, based on which the damages in the collector are detected, is measured after the exhaust gas volume reached the target volume. It is determined that the damages in the collector have occurred if the pressure difference is lower than a predetermined value.
    • 本发明的废气净化装置有利地用于柴油发动机。 用于收集废气中所含的微粒的收集器设置在发动机的排气管中。 基于收集器的入口和出口之间的压力差来检测收集器中的损坏。 为了正确地检测基于压力差的损害,通过提高废气温度,流过集电器的废气体积增加到目标体积。 在通过这种燃料喷射引擎输出不增加的时刻,通过将燃料喷射到发动机中来提高废气温度。 在废气体积达到目标体积之后,测量基于此检测到集电体损伤的压力差。 如果压力差低于预定值,则确定收集器中的损坏已经发生。