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    • 26. 发明申请
    • SYSTEMS AND METHODS FOR ESTIMATING RESIDUAL GAS FRACTION FOR INTERNAL COMBUSTION ENGINES USING ALTITUDE COMPENSATION
    • 使用高度补偿估算内燃机的残余气体分配的系统和方法
    • US20090076703A1
    • 2009-03-19
    • US11965057
    • 2007-12-27
    • Layne K. WigginsJason MeyerYann G. Guezennec
    • Layne K. WigginsJason MeyerYann G. Guezennec
    • F02D45/00
    • F02D41/0062F02D2041/1433F02D2200/0414F02D2200/703F02D2200/704Y02T10/47
    • An engine control system comprises a first factor calculating module that calculates a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors. A second factor calculating module calculates a second factor based on ICAM, ECAM, RPM and second calibration factors. A residual gas fraction (RGF) estimating module estimates a RGF value based on the first factor adjusted for altitude and said second factor. A method comprises calculating a first factor based on intake cam position (ICAM), exhaust cam position (ECAM), engine speed (RPM) and first calibration factors; calculating a second factor based on ICAM, ECAM, RPM and second calibration factors; and estimating a residual gas fraction (RGF) value based on the first factor adjusted for altitude and said second factor. At least one engine operating parameter is adjusted based on the RGF value.
    • 发动机控制系统包括基于进气凸轮位置(ICAM),排气凸轮位置(ECAM),发动机转速(RPM)和第一校准因数来计算第一因子的第一因子计算模块。 第二因素计算模块基于ICAM,ECAM,RPM和第二校准因子计算第二因子。 残余气体分数(RGF)估计模块基于针对高度调整的第一因子和所述第二因素来估计RGF值。 一种方法包括基于进气凸轮位置(ICAM),排气凸轮位置(ECAM),发动机转速(RPM)和第一校准因数计算第一因子; 基于ICAM,ECAM,RPM和第二校准因子计算第二因素; 以及基于针对高度调整的第一因子和所述第二因素来估计残留气体分数(RGF)值。 基于RGF值调整至少一个发动机工作参数。
    • 30. 发明申请
    • THROTTLE INLET ABSOLUTE AIR PRESSURE SENSOR FOR DIRTY AIR FILTER DETECTION
    • 节气门入口用于空气过滤器检测的绝对空气压力传感器
    • US20080190177A1
    • 2008-08-14
    • US11673837
    • 2007-02-12
    • Layne K. WigginsVivek Mehta
    • Layne K. WigginsVivek Mehta
    • G01P5/00F02M51/00
    • F02M35/09B01D46/0086
    • A system for detecting contamination of an air filter for an internal combustion engine includes an air pressure sensor disposed downstream of the air filter, an air flow sensor disposed in an air intake system of the engine, and a control module in communication with the air pressure sensor and the air flow sensor. The control module is configured to estimate an atmospheric pressure based on a signal received from the air pressure sensor. The control module is further configured to determine a contamination level of the air filter based on an air flow rate provided by the air flow sensor and a pressure drop across the air filter based on a pressure difference between the estimated atmospheric pressure and a second pressure measurement from the air pressure sensor that corresponds to the provided air flow rate.
    • 用于检测用于内燃机的空气过滤器的污染物的系统包括设置在空气过滤器下游的空气压力传感器,设置在发动机的进气系统中的空气流量传感器,以及与空气压力连通的控制模块 传感器和气流传感器。 控制模块被配置为基于从空气压力传感器接收的信号来估计大气压力。 控制模块还被配置成基于由空气流量传感器提供的空气流量和空气过滤器上的压降,基于估计的大气压力和第二压力测量值之间的压力差来确定空气过滤器的污染水平 从与所提供的空气流量对应的空气压力传感器。