Engine and emission monitoring and control system utilizing gas sensors
    21.
    发明授权
    Engine and emission monitoring and control system utilizing gas sensors 失效
    使用气体传感器的发动机和排放监测和控制系统

    公开(公告)号:US5426934A

    公开(公告)日:1995-06-27

    申请号:US15930

    申请日:1993-02-10

    摘要: An engine monitoring system and/or emission reduction system is provided for use in conjunction with an internal combustion engine. The system includes a plurality of sensors which detect various engine operating conditions and in which each sensor generates an output signal representative of its particular engine operating condition. At least one of these sensors is a gas sensor associated with the exhaust system which produces an output signal indicative of the concentration of nitric oxides in the exhaust emissions and which has an output which varies as a function of the concentration of such nitric oxides. A central processing unit receives inputs from the various engine sensors and, in accordance with preprogrammed algorithms, monitors the engine for failure and/or deterioration of various components in the emission reduction system as well as the various engine sensors. The processing unit further generates output signals which controls the operation of various engine components to optimize the operating condition of the engine as well as to meet governmental standards relating to engine emissions.

    摘要翻译: 提供与内燃机一起使用的发动机监控系统和/或排放减少系统。 该系统包括多个传感器,其检测各种发动机操作条件,并且其中每个传感器产生表示其特定发动机操作条件的输出信号。 这些传感器中的至少一个是与排气系统相关联的气体传感器,其产生指示废气排放物中的一氧化氮浓度的输出信号,并且其输出随着这种一氧化氮浓度的变化而变化。 中央处理单元接收来自各种发动机传感器的输入,并且根据预编程的算法,监视发动机在排放减少系统以及各种发动机传感器中的各种部件的故障和/或劣化。 处理单元还产生控制各种发动机部件的操作以优化发动机的运行状态以及符合与发动机排放有关的政府标准的输出信号。

    Air-assist fuel injection system
    22.
    发明授权
    Air-assist fuel injection system 失效
    空气辅助燃油喷射系统

    公开(公告)号:US5409169A

    公开(公告)日:1995-04-25

    申请号:US779080

    申请日:1991-10-18

    摘要: An air-assist fuel injection system controls the supply of compressed air to the fuel injectors according to the operating status of internal combustion engine. For cold start operation, compressed air is supplied continuously to the injectors; while, for partial load (cruising) and partial acceleration, air is supplied as a pulsating (air volume control) flow consisting of air pulses coincident with the injected fuel pulses. On the other hand, for acceleration and deceleration, the supply of compressed air to the injectors may be inhibited. Further, idle speed control can be achieved using the air-assist to the fuel injectors, thereby eliminating need for a separate idle speed control valve. To enhance system operation, a fuel injector may be employed in which both the fuel and the applied compressed air are swirled, but in opposite directions, so as to achieve a fuel spray of small particle size.

    摘要翻译: 空气辅助燃料喷射系统根据内燃机的运行状态控制向燃料喷射器供应压缩空气。 对于冷启动操作,压缩空气连续供给喷油器; 而对于部分负载(巡航)和部分加速,空气作为脉冲(空气体积控制)流被提供,其由与注入的燃料脉冲重合的空气脉冲组成。 另一方面,对于加速和减速,可以抑制向喷射器供应压缩空气。 此外,可以使用对燃料喷射器的空气辅助来实现怠速控制,从而不需要单独的怠速转速控制阀。 为了增强系统操作,可以采用燃料喷射器,其中燃料和施加的压缩空气都被涡旋,但是在相反的方向上,以便实现小粒径的燃料喷射。

    Control system for a gaseous fuel internal combustion engine utilizing
PID gain scheduling parameters
    23.
    发明授权
    Control system for a gaseous fuel internal combustion engine utilizing PID gain scheduling parameters 失效
    采用PID增益调度参数的气体燃料内燃机控制系统

    公开(公告)号:US5720266A

    公开(公告)日:1998-02-24

    申请号:US707321

    申请日:1996-09-03

    IPC分类号: F02B77/08 F02D41/00 F02D41/14

    摘要: A fuel control system is provided for use with an internal combustion engine having at least one cylinder, a source of gaseous fuel and an intake passageway for fluidly connecting the air intake to the combustion cylinder. The control system includes a gas flow rate sensor which generates an output signal representative of the fuel flow rate to the engine as well as a mass air flow sensor which generates a signal representative of the mass air flow rate to the engine. A fuel valve is fluidly connected in series between the source of gaseous fuel and the air intake passageway. The fuel valve is actuated by an electrical pulse stream between an open and a closed position so that the duty cycle of the pulse stream is proportional to the amount of fuel supplied to the engine. In response to the fuel flow rate signal, the air flow rate signal and a target air/fuel ratio, the control system generates PID gain scheduling parameters relative to the duty cycle of the pulse stream. The system then varies the duty cycle of the pulse stream as a function of the PID gain scheduling parameters to obtain the target air/fuel ratio. Optionally, an air/fuel sensor generates an output signal representative of the actual air/fuel ratio supplied to the engine. This signal is compared to the target air/fuel ratio and utilized to generate second PID gain scheduling parameters to further modify the duty cycle of the pulse stream in order to obtain the target air/fuel ratio.

    摘要翻译: 燃料控制系统被提供用于具有至少一个气缸,气体燃料源和用于将进气流体连接到燃烧气缸的进气通道的内燃机。 控制系统包括气体流量传感器,该气体流量传感器产生代表向发动机的燃料流量的输出信号,以及产生代表向发动机的质量空气流量的信号的质量空气流量传感器。 燃料阀在气态燃料源和进气通道之间串联流体连接。 燃料阀由打开和关闭位置之间的电脉冲流驱动,使得脉冲流的占空比与供给发动机的燃料量成比例。 响应于燃料流量信号,空气流量信号和目标空气/燃料比,控制系统相对于脉冲流的占空比生成PID增益调度参数。 然后系统根据PID增益调度参数改变脉冲流的占空比,以获得目标空燃比。 可选地,空气/燃料传感器产生表示提供给发动机的实际空气/燃料比的输出信号。 将该信号与目标空燃比进行比较,并用于产生第二PID增益调度参数,以进一步修改脉冲流的占空比,以获得目标空燃比。

    Fuel management system for a gaseous fuel internal combustion engine
    24.
    发明授权
    Fuel management system for a gaseous fuel internal combustion engine 失效
    用于气体燃料内燃机的燃料管理系统

    公开(公告)号:US5353765A

    公开(公告)日:1994-10-11

    申请号:US58373

    申请日:1993-05-10

    摘要: A fuel management system is provided for use with an internal combustion engine which utilizes gaseous fuel as the fuel source. A mass gas flow sensor is fluidly connected between the gaseous fuel source and the engine. A mass air flow meter is similarly provided in series with an air intake for the internal combustion engine and the outputs from both flow meters are provided as input signals to a microprocessor based control circuit. The control circuit calculates the air/fuel ratio of the combustible charge provided to the engine and generates appropriate output signals to a valve arrangement in series between the source of gaseous fuel and the internal combustion engine to vary the air/fuel ratio to obtain a desired engine performance as a function of the engine operating condition. An air/fuel ratio sensor is also in fluid communication with the exhaust gas stream from the engine and provides an output signal representative of the actual air/fuel ratio to the control circuit. The control circuit compares the signal from the air/fuel ratio sensor with the calculated air/fuel ratio from the gas flow sensor such as a mass gas flow sensor, and provides appropriate compensation signals to the valve arrangement to compensate for variances between the calculated and actual air/fuel ratio.

    摘要翻译: 燃料管理系统被提供用于利用气体燃料作为燃料源的内燃机。 质量气体流量传感器流体连接在气体燃料源和发动机之间。 质量空气流量计与内燃机的进气口类似地提供,并且来自两个流量计的输出被提供给基于微处理器的控制电路的输入信号。 控制电路计算提供给发动机的可燃电荷的空燃比,并且产生适当的输出信号到气体燃料源和内燃机之间串联的阀装置,以改变空燃比以获得所需的 发动机性能作为发动机工作状态的函数。 空气/燃料比传感器也与来自发动机的废气流流体连通,并向控制电路提供表示实际空气/燃料比的输出信号。 控制电路将来自空气/燃料比传感器的信号与来自诸如质量气体流量传感器之类的气体流量传感器的计算出的空气/燃料比进行比较,并向阀装置提供适当的补偿信号,以补偿计算的和 实际空燃比。

    Fuel delivery system
    25.
    发明授权
    Fuel delivery system 有权
    燃油输送系统

    公开(公告)号:US08789513B2

    公开(公告)日:2014-07-29

    申请号:US13245090

    申请日:2011-09-26

    IPC分类号: F02M69/46

    摘要: A fuel delivery system for a direct injection internal combustion engine having two fuel rails and a plurality of fuel injectors attached to and fluidly connected with each fuel rail. A first fuel pump has its output connected with the first fuel rail while a second fuel pump has its output connected with the second fuel rail. A crossover pipe fluidly connects the outlets of both the first and second pumps. Both the first pump and the second pump each have an intake stroke and a pumping stroke. Furthermore, the intake stroke of the first pump coincides with the pumping stroke of the second pump and vice versa.

    摘要翻译: 一种用于直喷式内燃机的燃料输送系统,具有两个燃料导轨和连接到每个燃料导轨并且与每个燃料轨道流体连接的多个燃料喷射器。 第一燃料泵的输出与第一燃料轨连接,而第二燃料泵的输出与第二燃料轨连接。 交叉管道将第一和第二泵的出口流体连接。 第一泵和第二泵都具有进气冲程和泵送冲程。 此外,第一泵的进气冲程与第二泵的泵送冲程一致,反之亦然。

    Power inverter controller and method
    26.
    发明授权
    Power inverter controller and method 有权
    电力变频器控制器及方法

    公开(公告)号:US08049369B2

    公开(公告)日:2011-11-01

    申请号:US12409002

    申请日:2009-03-23

    IPC分类号: H02J3/32 H02J5/00

    CPC分类号: H02P27/08 H02M2001/0009

    摘要: A controller for a power inverter having a gate assembly with an alternating current power output. A gate driver controls the activation of the gate assembly while a processor controls the operation of the gate driver. A current sensor has an output signal representative of the current at the power output. A noise detector circuit provides an output signal to the processor of the frequency of electromagnetic noise in the power inverter and the processor is programmed to sample the current from the current sensor at the frequency of the noise.

    摘要翻译: 一种用于具有具有交流功率输出的门组件的电力逆变器的控制器。 当处理器控制门驱动器的操作时,门驱动器控制门组件的激活。 电流传感器具有代表功率输出电流的输出信号。 噪声检测器电路在电力逆变器中向处理器提供电磁噪声频率的输出信号,并且处理器被编程为以噪声频率从当前传感器采样电流。

    POWER INVERTER CONTROLLER AND METHOD
    27.
    发明申请
    POWER INVERTER CONTROLLER AND METHOD 有权
    电力逆变器控制器和方法

    公开(公告)号:US20100237693A1

    公开(公告)日:2010-09-23

    申请号:US12409002

    申请日:2009-03-23

    IPC分类号: B60L1/00

    CPC分类号: H02P27/08 H02M2001/0009

    摘要: A controller for a power inverter having a gate assembly with an alternating current power output. A gate driver controls the activation of the gate assembly while a processor controls the operation of the gate driver. A current sensor has an output signal representative of the current at the power output. A noise detector circuit provides an output signal to the processor of the frequency of electromagnetic noise in the power inverter and the processor is programmed to sample the current from the current sensor at the frequency of the noise.

    摘要翻译: 一种用于具有具有交流功率输出的门组件的电力逆变器的控制器。 当处理器控制门驱动器的操作时,门驱动器控制门组件的激活。 电流传感器具有代表功率输出电流的输出信号。 噪声检测器电路在电力逆变器中向处理器提供电磁噪声频率的输出信号,并且处理器被编程为以噪声频率从当前传感器采样电流。

    Air-assist fuel injection system
    28.
    发明授权
    Air-assist fuel injection system 失效
    空气辅助燃油喷射系统

    公开(公告)号:US5148788A

    公开(公告)日:1992-09-22

    申请号:US717517

    申请日:1991-06-19

    摘要: An air-assist fuel injection system controls the supply of compressed air to the fuel injectors according to the operating status of internal combustion engine. For cold start operation, compressed air is supplied continuously to the injectors; while, for partial load (cruising) and partial acceleration, air is supplied as a pulsating (air volume control) flow consisting of air pulses coincident with the injected fuel pulses. On the other hand, for acceleration and deceleration, the supply of compresseed air to the injectors may be inhibited. Further, idle speed control can be achieved using the air-assist to the fuel injectors, thereby eliminating need for a separate idle speed control valve. To enhance system operation, a fuel injector may be employed in which both the fuel and the applied compressed air are swirled, but in opposite directions, so as to achieve a fuel spray of small particle size.

    摘要翻译: 空气辅助燃料喷射系统根据内燃机的运行状态控制向燃料喷射器供应压缩空气。 对于冷启动操作,压缩空气连续供给喷油器; 而对于部分负载(巡航)和部分加速,空气作为脉冲(空气体积控制)流被提供,其由与注入的燃料脉冲重合的空气脉冲组成。 另一方面,对于加速和减速,可以抑制向喷射器供应压缩空气。 此外,可以使用对燃料喷射器的空气辅助来实现怠速控制,从而不需要单独的怠速转速控制阀。 为了增强系统操作,可以采用燃料喷射器,其中燃料和施加的压缩空气都被涡旋,但是在相反的方向上,以便实现小粒径的燃料喷雾。

    Fuel pump for an internal combustion engine
    29.
    发明授权
    Fuel pump for an internal combustion engine 有权
    用于内燃机的燃油泵

    公开(公告)号:US09562504B2

    公开(公告)日:2017-02-07

    申请号:US13423528

    申请日:2012-03-19

    摘要: A fuel pump for a direct injection internal combustion engine having a housing defining a pump chamber. Driven and idler toothed gears are rotatably mounted within the pump chamber so that the driven and idler gears are in mesh with each other at a predetermined location in the pump chamber. A fluid inlet is formed through the housing and open to an inlet subchamber in the pump chamber. A fluid outlet is also formed through the housing and open to an outlet subchamber in the pump chamber. A pressure relief passageway fluidly connects the inlet subchamber to the outlet subchamber and a valve is disposed in series with the pressure relief passageway. A control circuit controls the actuation of the valve to control the pump pressure at the pump outlet.

    摘要翻译: 一种用于直喷式内燃机的燃料泵,其具有限定泵室的壳体。 驱动和惰轮齿轮可旋转地安装在泵室内,使得从动和空转齿轮在泵室中的预定位置处彼此啮合。 流体入口通过壳体形成并且通​​向泵室中的入口子室。 流体出口还通过壳体形成并且通​​向泵室中的出口子室。 压力释放通道将入口子室流体地连接到出口子室,并且阀与压力释放通道串联设置。 控制电路控制阀的致动以控制泵出口处的泵压力。

    EMI reduced power inverter
    30.
    发明授权
    EMI reduced power inverter 有权
    EMI降低功率变频器

    公开(公告)号:US07547987B2

    公开(公告)日:2009-06-16

    申请号:US11425751

    申请日:2006-06-22

    IPC分类号: B60L1/00 B60L3/00 H02G3/00

    摘要: A power inverter of the type used with hybrid electric vehicles having a circuit board with a power layer having a first and second section which are electrically separated using slits from each other on the power layer. A control circuit is connected to and powered by the first section of the power layer while a switching power supply is connected to and powered by the second section of the power layer. An electromagnetic filter is electrically connected between the sections of the power layer. This electromagnetic filter blocks high frequency noises of the type generated by the switching power supply while enabling the sections to be maintained at the same DC voltage level. Optionally, a ferrite covering is provided around a current bus bar of the power inverter to contain magnetic fields generated by current flow through the bus bar.

    摘要翻译: 一种与混合电动车辆一起使用的电力逆变器,其具有电路板,电路板具有第一和第二部分,功率层在功率层上彼此使用狭缝电隔离。 控制电路由电源层的第一部分连接并供电,而开关电源连接到电源层的第二部分并由电源层的第二部分供电。 电力滤波器电连接在功率层的各部分之间。 该电磁滤波器阻止由开关电源产生的类型的高频噪声,同时使得这些部分保持在相同的直流电压电平。 可选地,在功率逆变器的电流母线周围设置铁氧体覆盖物,以包含通过母线的电流产生的磁场。