WIND CONDITION BASED VAPOR LEAK DETECTION TEST
    3.
    发明申请
    WIND CONDITION BASED VAPOR LEAK DETECTION TEST 有权
    基于风条件的蒸汽泄漏检测测试

    公开(公告)号:US20090293599A1

    公开(公告)日:2009-12-03

    申请号:US12132192

    申请日:2008-06-03

    IPC分类号: G01M3/00 F02M33/02

    CPC分类号: F02M25/0827

    摘要: A control system comprising a wind condition determination module that determines a wind condition and a leak detection test control module that selectively diagnoses a vapor leak associated with a vehicle based on the wind condition. A method comprising determining a wind condition and selectively diagnosing a vapor leak associated with a vehicle based on the wind condition.

    摘要翻译: 一种控制系统,包括确定风况的风况确定模块和基于风况选择性地诊断与车辆相关联的蒸气泄漏的泄漏检测测试控制模块。 一种方法,包括基于风况确定风况并选择性地诊断与车辆相关联的蒸气泄漏。

    SYSTEM AND METHOD FOR DIAGNOSING FAULTS IN VACUUM PUMPS OF FUEL SYSTEMS AND FOR DIAGNOSING LEAKS IN FUEL SYSTEMS
    4.
    发明申请
    SYSTEM AND METHOD FOR DIAGNOSING FAULTS IN VACUUM PUMPS OF FUEL SYSTEMS AND FOR DIAGNOSING LEAKS IN FUEL SYSTEMS 有权
    用于诊断燃油系统真空泵中的故障和用于诊断燃油系统中的泄漏的系统和方法

    公开(公告)号:US20120097252A1

    公开(公告)日:2012-04-26

    申请号:US12952522

    申请日:2010-11-23

    IPC分类号: F16K21/04

    摘要: A control system includes a switching valve control module, a pressure determination module, and a fuel system diagnostic module. The switching valve control module actuates a switching valve in a fuel system of a vehicle between a first position and a second position, the first position venting a suction side of a vacuum pump in the fuel system to an atmosphere, the second position sealing the suction side of the vacuum pump from the atmosphere. The pressure determination module determines a first pressure on the suction side of the vacuum pump when the switching valve is in the first position, and determines a second pressure on the suction side of the vacuum pump when the switching valve is in the second position. The fuel system diagnostic module selectively diagnoses a fault in the vacuum pump based on the first pressure and the second pressure.

    摘要翻译: 控制系统包括切换阀控制模块,压力确定模块和燃料系统诊断模块。 切换阀控制模块致动在第一位置和第二位置之间的车辆的燃料系统中的切换阀,第一位置将燃料系统中的真空泵的吸入侧排出到大气中,第二位置将吸入 一侧的真空泵从大气层。 当切换阀处于第一位置时,压力确定模块确定真空泵的吸入侧上的第一压力,并且当切换阀处于第二位置时确定真空泵的吸入侧上的第二压力。 燃料系统诊断模块基于第一压力和第二压力选择性地诊断真空泵中的故障。

    FUEL VOLATILITY COMPENSATION FOR ENGINE COLD START SPEED CONTROL
    5.
    发明申请
    FUEL VOLATILITY COMPENSATION FOR ENGINE COLD START SPEED CONTROL 有权
    发动机冷启动速度控制的燃油挥发性补偿

    公开(公告)号:US20090088947A1

    公开(公告)日:2009-04-02

    申请号:US11954872

    申请日:2007-12-12

    IPC分类号: F02D41/30

    摘要: A fuel control system includes devices that generate parameter signals. The parameter signals include an engine runtime signal and at least one of an engine load signal, a temperature signal and a barometric pressure signal. A modification module generates a modification signal based on the parameter signals. A control module compensates for a current fuel volatility by adjusting a current air/fuel mixture of an engine based on the modification signal.

    摘要翻译: 燃料控制系统包括产生参数信号的装置。 参数信号包括发动机运行时间信号和发动机负载信号,温度信号和大气压力信号中的至少一个。 修改模块基于参数信号产生修改信号。 控制模块通过基于修改信号调整发动机的当前空气/燃料混合物来补偿当前的燃料挥发性。

    Air filter restriction monitoring without pre-throttle pressure sensors
    6.
    发明授权
    Air filter restriction monitoring without pre-throttle pressure sensors 失效
    空气过滤器限制监测,无需节气门前压力传感器

    公开(公告)号:US07441449B2

    公开(公告)日:2008-10-28

    申请号:US11626579

    申请日:2007-01-24

    IPC分类号: G01M15/00

    CPC分类号: G01M15/09 F02D35/0023

    摘要: A method of monitoring air flow restriction in an air intake of an internal combustion engine includes recording a predetermined number of pre-throttle pressure samples, recording a predetermined number of mass air flow samples, which respectively correspond to the pre-throttle pressure samples and determining a slope based on the pre-throttle pressure samples and the mass air flow samples. Whether an air filter is inducing an air flow over restriction is determined based on the slope.

    摘要翻译: 一种监测内燃机进气口中的气流限制的方法包括:记录预定数量的节气门前压力样本,记录预定数量的质量气流样本,分别对应于节气门前压力样本和确定 基于节气门前压力样本和质量空气流量样本的斜率。 基于斜率确定空气过滤器是否引起空气流过限制。

    LIQUID FUEL DETECTION SYSTEM
    7.
    发明申请
    LIQUID FUEL DETECTION SYSTEM 失效
    液体燃料检测系统

    公开(公告)号:US20080120015A1

    公开(公告)日:2008-05-22

    申请号:US11560997

    申请日:2006-11-17

    IPC分类号: F02D41/00 G06F19/00

    摘要: A liquid fuel detection system for a fuel vapor system of a vehicle providing fuel vapor to an engine operating in closed loop includes an oxygen sensor that generates an oxygen signal based on an oxygen level in engine exhaust. An engine speed sensor generates a speed signal based on a speed of the engine. And a control module receives the oxygen signal and the speed signal, determines a fuel control factor based on the oxygen signal, determines a long term modifier based on long term changes of the fuel control factor, and detects the presence of liquid fuel in the fuel vapor system based on the fuel control factor, the speed signal, and the long term modifier.

    摘要翻译: 一种用于为在闭合回路中运行的发动机提供燃料蒸汽的车辆的燃料蒸气系统的液体燃料检测系统包括氧传感器,其基于发动机排气中的氧气水平产生氧气信号。 发动机速度传感器基于发动机的速度产生速度信号。 并且控制模块接收氧气信号和速度信号,基于氧信号确定燃料控制因子,基于燃料控制因子的长期变化确定长期修正器,并且检测f中的液体燃料的存在

    INTAKE MANIFOLD TUNING VALVE FUZZY LOGIC DIAGNOSTIC
    8.
    发明申请
    INTAKE MANIFOLD TUNING VALVE FUZZY LOGIC DIAGNOSTIC 有权
    进料歧管调节阀FUZZY LOGIC DIAGNOSTIC

    公开(公告)号:US20080052042A1

    公开(公告)日:2008-02-28

    申请号:US11467032

    申请日:2006-08-24

    IPC分类号: G06F19/00

    摘要: A method of diagnosing a malfunction of a tuning valve of an intake manifold coupled to an internal combustion engine is provided. The method includes: commanding the tuning valve to at least one of a closed and an opened position; computing an average deviation of manifold absolute pressure; determining an average deviation threshold using fuzzy logic based on engine speed and airflow per cylinder; comparing the average deviation to the average deviation threshold; and diagnosing a malfunction of the tuning valve based on a comparison of the average deviation and the average deviation threshold.

    摘要翻译: 提供一种诊断与内燃机连接的进气歧管的调节阀故障的方法。 该方法包括:将调谐阀指令为闭合位置和打开位置中的至少一个; 计算歧管绝对压力的平均偏差; 使用基于发动机转速和每气缸气流的模糊逻辑确定平均偏差阈值; 将平均偏差与平均偏差阈值进行比较; 并基于平均偏差和平均偏差阈值的比较来诊断调谐阀的故障。

    VARIABLE INTAKE MANIFOLD DIAGNOSTIC SYSTEMS AND METHODS
    9.
    发明申请
    VARIABLE INTAKE MANIFOLD DIAGNOSTIC SYSTEMS AND METHODS 有权
    可变摄像机诊断系统及方法

    公开(公告)号:US20100294239A1

    公开(公告)日:2010-11-25

    申请号:US12470822

    申请日:2009-05-22

    IPC分类号: F02M7/00 F02D41/00 G01M15/04

    摘要: A system includes a control module, a valve control module, and a diagnostic module. The control module controls a valve of a variable intake manifold when the system operates in a first mode. The control module commands the valve to a first position when a desired airflow through the variable intake manifold is greater than a threshold and commands the valve to a second position when the desired airflow is less than the threshold. The valve control module controls the valve when the system operates in a second mode. The valve control module commands the valve to move from the second position to the first position when the desired airflow is less than the threshold. The diagnostic module determines an operating state of the valve based on whether the valve is detected at the first position a predetermined period after the valve control module commands the valve.

    摘要翻译: 系统包括控制模块,阀控制模块和诊断模块。 当系统以第一模式操作时,控制模块控制可变进气歧管的阀。 当所需气流通过可变进气歧管大于阈值时,控制模块将阀门命令到第一位置,并且当所需气流小于阀值时,将阀门命令到第二位置。 当系统在第二模式下运行时,阀门控制模块控制阀门。 当所需气流小于阈值时,阀控制模块命令阀从第二位置移动到第一位置。 诊断模块基于在阀控制模块命令阀之后的预定时间段是否在第一位置检测到阀是否确定阀的操作状态。

    INTERMITTENT SENSOR DETECTION USING SIGNAL STRING LENGTH
    10.
    发明申请
    INTERMITTENT SENSOR DETECTION USING SIGNAL STRING LENGTH 有权
    使用信号STRING长度的间歇传感器检测

    公开(公告)号:US20100283572A1

    公开(公告)日:2010-11-11

    申请号:US12436408

    申请日:2009-05-06

    IPC分类号: G05B23/02

    CPC分类号: G05B9/02 G05B23/0235

    摘要: An engine control system comprises a signal deviation module, a variation determination module, and a sensor diagnostic module. The signal deviation module receives a signal from a sensor monitoring an operating condition of an engine and determines a plurality of signal deviations. Each of the plurality of signal deviations is based on a magnitude of a difference between the signal at a first time and the signal at a second time. The second time is different than the first time. The variation determination module generates a variation value based on the plurality of signal deviations during a period. The sensor diagnostic module determines a state of the sensor based on the variation value.

    摘要翻译: 发动机控制系统包括信号偏差模块,变化确定模块和传感器诊断模块。 信号偏差模块接收来自传感器的信号,监测发动机的运行状态并确定多个信号偏差。 多个信号偏差中的每一个基于第一时间的信号与第二时间的信号之间的差值的大小。 第二次与第一次不同。 变化确定模块在一段时间内基于多个信号偏差生成变化值。 传感器诊断模块基于变化值来确定传感器的状态。