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10 条记录 (耗时 0.021 秒)

    Method and system to mitigate pump noise in a direct injection, spark ignition engine
    1.
    发明授权
    Method and system to mitigate pump noise in a direct injection, spark ignition engine 有权
    火花点火式发动机直接喷射，减轻泵噪声的方法和系统

    公开(公告)号：US07373924B1

    公开(公告)日：2008-05-20

    申请号：US11746972

    申请日：2007-05-10

    申请人： Eric Krengel ,  Mansour Beshay ,  Deanna Hoffman

    发明人： Eric Krengel ,  Mansour Beshay ,  Deanna Hoffman

    IPC分类号： F02M69/54 ,  F02M69/52

    CPC分类号： F02M59/366 ,  F02B2075/125 ,  F02D41/3005 ,  F02D41/3845 ,  F02M37/10 ,  F02M59/102 ,  F02M63/0225 ,  F02M63/023 ,  F02M63/028 ,  F02M69/52 ,  F02M69/54 ,  F02M2200/09 ,  Y02T10/123

    摘要： A method and system for controlling a fuel pressurizing system in a direct-injection, spark-ignition engine is disclosed such that the ticking sound of a solenoid valve in the high pressure pump is disabled at certain engine operating conditions. The fuel pressurizing system includes two pumps in series: a low pressure lift pump and a high pressure pump. Based on an engine operating parameter (speed, load, temperature, fuel delivery rate, as examples) the high pressure fuel pump is disabled when the engine operating parameter is below a threshold. The disablement of the pump is accomplished by turning off the normally-open solenoid valve on the inlet side of the high pressure pump, particularly at low speed and/or low torque conditions, e.g., idle, when the ticking of the injector is particularly noticeable. When the pump is disabled, fuel is supplied to the fuel injectors at lift pump pressure.

    摘要翻译： 公开了一种用于控制直喷式火花点火式发动机中的燃料加压系统的方法和系统，使得在某些发动机运行条件下，高压泵中的电磁阀的滴答声被禁用。 燃料加压系统包括两个串联的泵：一个低压提升泵和一个高压泵。 基于发动机工作参数（速度，负载，温度，燃料输送速率）作为示例，当发动机工作参数低于阈值时，高压燃料泵被禁用。 泵的停用是通过关闭高压泵入口侧的常开电磁阀来实现的，特别是在低速和/或低转矩条件下（例如空转），当喷射器的打勾特别明显时 。 当泵被禁用时，在提升泵压力下向燃料喷射器供应燃料。

    SYSTEM AND METHODS FOR CONTROLLING AIR FUEL RATIO
    7.
    发明申请
    SYSTEM AND METHODS FOR CONTROLLING AIR FUEL RATIO 有权
    用于控制空气燃料比的系统和方法

    公开(公告)号：US20120324864A1

    公开(公告)日：2012-12-27

    申请号：US13168124

    申请日：2011-06-24

    申请人： Eric Krengel ,  Steven Schwochert

    发明人： Eric Krengel ,  Steven Schwochert

    IPC分类号： F01N3/18 ,  F02D41/00

    CPC分类号： F02D41/1454 ,  F01N11/00 ,  F01N11/007 ,  F02D41/1441 ,  F02D41/1456 ,  F02D41/2441 ,  F02D41/2454 ,  F02D41/30 ,  Y02T10/47

    摘要： Methods and system for controlling air-fuel ratios in an internal combustion engine are disclosed. One embodiment comprises, adjusting a sensor calibration correction value of an exhaust sensor upstream of a catalyst based on an exhaust sensor downstream of the catalyst. The adjustment of the sensor calibration correction value takes advantage of the fact that certain aromatic hydrocarbons causing errors in the reading of the upstream sensor are not present at the downstream sensor due to sufficient catalytic activity of a catalyst positioned between the sensors.

    摘要翻译： 公开了一种用于控制内燃机中的空燃比的方法和系统。 一个实施例包括：基于催化剂下游的排气传感器，调节催化剂上游的排气传感器的传感器校准校正值。 传感器校准校正值的调整利用了由于位于传感器之间的催化剂具有足够的催化活性而导致在下游传感器读取中导致误差的某些芳烃不存在于下游传感器中的事实。