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    • 5. 发明授权
    • Gaseous fueled engine system and method
    • 气体发动机系统及方法
    • US06502550B1
    • 2003-01-07
    • US09683702
    • 2002-02-05
    • Allan J. KotwickiSiamak HashemiSteven Joseph SzwabowskiWoong-chul YangYin ChenYong-Wha Kim
    • Allan J. KotwickiSiamak HashemiSteven Joseph SzwabowskiWoong-chul YangYin ChenYong-Wha Kim
    • F02P500
    • F02D41/009F02D37/02F02P7/067
    • An ignition and fuel control system 10 of a vehicle 18 is provided including a controller 22. The controller 22 is electrically coupled to an ignition system 14, a fuel system 16, a crankshaft position sensor 32, and a camshaft position sensor 34. The crankshaft position sensor 32 senses a crankshaft position and generates a crankshaft position signal. A camshaft position sensor 34 senses a camshaft position and generates a camshaft position signal. The controller 22 determines a crankshaft position and a camshaft position in response to the crankshaft position signal and the camshaft position signal respectively. The controller 22 identifies a reference engine cylinder in response to the crankshaft position and the camshaft position and generates a synchronization value. The controller 22 also enables the ignition system 14 and the fuel system 16 in response to the synchronization value.
    • 车辆18的点燃和燃料控制系统10设置有控制器22.控制器22电连接到点火系统14,燃料系统16,曲轴位置传感器32和凸轮轴位置传感器34.曲轴 位置传感器32感测曲轴位置并产生曲轴位置信号。 凸轮轴位置传感器34感测凸轮轴位置并产生凸轮轴位置信号。 控制器22分别响应于曲轴位置信号和凸轮轴位置信号来确定曲轴位置和凸轮轴位置。 控制器22响应于曲轴位置和凸轮轴位置识别参考发动机气缸,并产生同步值。 控制器22还能够响应于同步值启用点火系统14和燃料系统16。
    • 6. 发明授权
    • On-board detection of fuel injector malfunction
    • 燃油喷射器故障的车载检测
    • US5535621A
    • 1996-07-16
    • US204823
    • 1994-03-02
    • John M. GlidewellGranger K.-C. ChuiWoong-Chul Yang
    • John M. GlidewellGranger K.-C. ChuiWoong-Chul Yang
    • F02B77/08F02D41/22F02D41/38F02D45/00F02M63/00F02M69/46G01M15/00F02M65/00
    • F02M69/46F02D41/221F02D41/3809F02D2041/224F02D2041/228F02D2041/288F02D2200/0602F02D2200/0618F02D2250/02
    • The present invention is directed to an on-board diagnostic system for detecting malfunctioning fuel injectors in an internal combustion engine during engine operation. A fuel injector control means is provided for individually actuating fuel injectors operatively connected to a fuel rail. Pressure sensor means are mounted to the fuel rail for sensing transient fuel pressure waves resulting from actuation of the individual fuel injectors and for generating a pressure signal in response thereto. Signal processing means are provided for processing pressure signals from the pressure sensor means and for generating an output signal upon detecting delayed opening or delayed closing of one or more injectors. Utilization means responsive to the output signal from the signal processing means may include, for example, an indicator lamp to alert an engine operator to an impaired fuel injector and/or means for adjusting the timing or duration of the injector actuation signal to achieve the desired injector opening and closing times.
    • 本发明涉及一种用于在发动机操作期间检测内燃机中的故障燃料喷射器的车载诊断系统。 燃料喷射器控制装置被设置用于单独地致动可操作地连接到燃料轨的燃料喷射器。 压力传感器装置安装到燃料轨道上,用于感测由各个燃料喷射器致动而产生的瞬态燃料压力波,并响应于此产生压力信号。 提供信号处理装置,用于处理来自压力传感器装置的压力信号,并且用于在检测到一个或多个喷射器的延迟打开或延迟关闭时产生输出信号。 响应于来自信号处理装置的输出信号的利用装置可以包括例如指示灯,以向发动机操作者警告受损的燃料喷射器和/或用于调节喷射器致动信号的时间或持续时间的装置,以实现期望的 喷油器开启和关闭时间。
    • 8. 发明授权
    • On-board detection of fuel line vapor
    • 燃油管路蒸汽的车载检测
    • US5426971A
    • 1995-06-27
    • US206683
    • 1994-03-03
    • John M. GlidewellGranger K.-C. ChuiWoong-Chul Yang
    • John M. GlidewellGranger K.-C. ChuiWoong-Chul Yang
    • G01M15/04B60R16/02F02B77/08F02D41/04F02M25/08F02M37/20F02M55/02F02M69/00G01N9/00G01N7/14
    • F02M37/20G01N9/002F02D2041/288F02D2250/02
    • An on-board diagnostic system is provided for determining the presence of vapor in a fuel supply line of an internal combustion engine during engine operation. Sensing means are operatively mounted to the fuel supply line for sensing transient fuel pressure waves resulting from actuation of one or more fuel injectors. The sensing means generates a pressure signal corresponding to the transient fuel pressure waves at least over a selected test interval. Signal processing means receives the pressure signal and determines its resonance frequency over at least a selected frequency range. The test interval resonance frequency is compared to a stored resonance frequency corresponding to an acceptable vapor level in the fuel supply line. The signal processing means generates an output signal upon detecting a value difference greater than a preselected amount (e.g., greater than zero) between the test interval resonance frequency and the stored resonance frequency. Utilization means are provided for response to the output signal, for example, by illumination of an indicator light visible to the operator of a motor vehicle in which the engine is equipped with the on-board diagnostic system of the invention.
    • 提供车载诊断系统,用于在发动机运行期间确定内燃机的燃料供应管线中的蒸气的存在。 感测装置可操作地安装到燃料供应管线上,用于感测由致动一个或多个燃料喷射器而产生的瞬时燃料压力波。 感测装置至少在所选择的测试间隔上产生对应于瞬态燃料压力波的压力信号。 信号处理装置接收压力信号,并在至少一个选定的频率范围内确定其谐振频率。 将测试间隔共振频率与对应于燃料供应管线中可接受的蒸汽水平的存储的共振频率进行比较。 信号处理装置在检测到大于测试间隔共振频率和存储的共振频率之间的预选量(例如,大于零)的值差时产生输出信号。 提供了用于响应于输出信号的利用装置,例如通过对发动机配备有本发明的车载诊断系统的机动车辆的操作者可见的指示灯进行照明。