公开(公告)号：US07209855B2

公开(公告)日：2007-04-24

申请号：US11216193

申请日：2005-09-01

申请人： Laurent Fabre ,  Georges Fonzes

发明人： Laurent Fabre ,  Georges Fonzes

IPC分类号： G01L7/00 ,  G01L9/00

CPC分类号： B60C23/0408

摘要： The invention relates to a method for filtering information emitted, on the basis of pressure measurements taken by a pressure sensor mounted on a wheel of a vehicle equipped with a tire, to a central unit mounted on the vehicle. According to this method, a value representative of the pressure of the air in the tire is measured periodically, with a period θ, and from this any possible variations ΔP in pressure between the values of the pressures successively measured are deduced; in parallel, with the same period θ, a value representative of the temperature of the air in the tire is measured. In addition, when there is a variation ΔP in pressure between two measured pressure values, that is greater in terms of absolute value than a predetermined threshold Sp, the variation ΔT between the two temperature values measured at the same instants as the measured pressures is calculated. The emission of a signal representative of a variation in pressure to the central unit is commanded only if the comparative change in the pressure and in the measured temperature might be representative of a variation of the amount of air in the tire.

摘要翻译： 本发明涉及一种基于安装在配有轮胎的车辆的车轮上的压力传感器进行的压力测量，将发出的信息过滤到安装在车辆上的中央单元的方法。 根据该方法，周期性地测量表示轮胎中的空气的压力的值，并且从该值可以推断出连续测量的压力值之间的任何可能变化压力值ΔP; 在相同的周期θ的情况下，测量表示轮胎中的空气的温度的值。 另外，当在两个测量的压力值之间存在压力变化ΔP时，其绝对值大于预定阈值Sp时，计算在与测量的压力相同的时刻测量的两个温度值之间的变化ΔT 。 只有当压力和测量温度的比较变化可能代表轮胎中的空气量的变化时才指示代表中央单元的压力变化的信号的发射。

公开(公告)号：US20060047469A1

公开(公告)日：2006-03-02

申请号：US11216193

申请日：2005-09-01

申请人： Laurent Fabre ,  Georges Fonzes

发明人： Laurent Fabre ,  Georges Fonzes

IPC分类号： G01L9/00

CPC分类号： B60C23/0408

摘要： The invention relates to a method for filtering information emitted, on the basis of pressure measurements taken by a pressure sensor mounted on a wheel of a vehicle equipped with a tire, to a central unit mounted on said vehicle. According to this method, a value representative of the pressure of the air in the tire is measured periodically, with a period θ, and from this any possible variations ΔP in pressure between the values of the pressures successively measured are deduced; in parallel, with the same period θ, a value representative of the temperature of the air in the tire is measured. In addition, when there is a variation ΔP in pressure between two measured pressure values, that is greater in terms of absolute value than a predetermined threshold Sp, the variation ΔT between the two temperature values measured at the same instants as said measured pressures is calculated. The emission of a signal representative of a variation in pressure to the central unit is commanded only if the comparative change in the pressure and in the measured temperature might be representative of a variation of the amount of air in the tire.

摘要翻译： 本发明涉及一种基于安装在装备有轮胎的车辆的车轮上的压力传感器所进行的压力测量，将发出的信息过滤到安装在所述车辆上的中央单元的方法。 根据该方法，周期性地测量表示轮胎中的空气的压力的值，并且从该值可以推断出连续测量的压力值之间的任何可能变化压力值ΔP; 在相同的周期θ的情况下，测量表示轮胎中的空气的温度的值。 另外，当在两个测量的压力值之间存在压力变化ΔP时，其绝对值大于预定阈值Sp时，计算在与所测量的压力相同的时刻测量的两个温度值之间的变化ΔT 。 只有当压力和测量温度的比较变化可能代表轮胎中的空气量的变化时才指示代表中央单元的压力变化的信号的发射。

公开(公告)号：US06658923B2

公开(公告)日：2003-12-09

申请号：US09790167

申请日：2001-02-21

申请人： Laurent Fabre

发明人： Laurent Fabre

IPC分类号： G01M1500

CPC分类号： F02M25/0809

摘要： A method of leak detection in a closed vapor handling system of an automotive vehicle while an engine is running, implemented by a system, the method including providing a pressure sensing element that obtains at least one pressure signal, closing a control valve and a shut off valve to seal the system from the engine and an atmosphere, generating a vacuum by opening the control valve, analyzing the at least one pressure signal at threshold times, comparing the at least one pressure signal to at least one pressure control value, and determining a leak condition if the at least one pressure signal is not less than the at least one pressure control value. The system including a pressure sensing element, a control valve, a shut off valve, a processor operatively coupled to the pressure sensing element and the shut off valve and receiving pressure signals from the pressure sensing element and sending signals to the control valve and the shut off valve. The processor closes the control valve and the shut off valve, generates a vacuum, depressurizes the system using the vacuum, controls the vacuum by opening the control valve, analyzes the pressure signal at threshold times, compares the pressure signal to pressure control values, and determines a leak condition.

摘要翻译： 一种在发动机运行的汽车的封闭蒸汽处理系统中由系统实现的泄漏检测方法，所述方法包括提供压力检测元件，其获得至少一个压力信号，关闭控制阀和关闭 阀，以将系统与发动机和大气密封，通过打开控制阀产生真空，在阈值时分析至少一个压力信号，将至少一个压力信号与至少一个压力控制值进行比较，以及确定 如果所述至少一个压力信号不小于所述至少一个压力控制值，则泄漏状况。 该系统包括压力感测元件，控制阀，截止阀，可操作地耦合到压力感测元件和截止阀的处理器，并且接收来自压力感测元件的压力信号并将信号发送到控制阀和关闭 截止阀。 处理器关闭控制阀和截止阀，产生真空，使用真空减压系统，通过打开控制阀控制真空，在阈值时分析压力信号，将压力信号与压力控制值进行比较， 确定泄漏状况。

公开(公告)号：US06508235B2

公开(公告)日：2003-01-21

申请号：US09789420

申请日：2001-02-21

申请人： Laurent Fabre

发明人： Laurent Fabre

IPC分类号： F02M3302

CPC分类号： F02M25/0809

摘要： A method of leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing a vacuum detection component having a microcontroller operatively coupled to actuators and sensors, receiving at least one sensor signal from the sensors to the vacuum detection component, processing the at least one sensor signal in the microcontroller, sending output to an engine management system based on the at least one processed sensor signal, processing the output in the engine management system operatively coupled to a control valve, transmitting input from the engine management system to the vacuum detection component based on the processed output, and sending actuator signals from the microcontroller to the actuators. The system including a vacuum detection component having a microcontroller operatively coupled to actuators and sensors, the microcontroller sending and receiving, respectively, signals therefrom and a processor communicating with the microcontroller, the microcontroller processing the signals and sending output based on the processed signals to the processor, the processor processing the output and transmitting input to the microcontroller based on the processed output.

摘要翻译： 一种由系统实现的机动车辆的封闭蒸气处理系统中的泄漏检测方法，该方法包括提供具有可操作地耦合到致动器和传感器的微控制器的真空检测部件，从传感器接收至少一个传感器信号到 真空检测部件，处理微控制器中的至少一个传感器信号，基于至少一个已处理的传感器信号将输出发送到发动机管理系统，处理可操作地耦合到控制阀的发动机管理系统中的输出， 基于经处理的输出将发动机管理系统提供给真空检测部件，并将致动器信号从微控制器发送到致动器。 该系统包括具有可操作地耦合到致动器和传感器的微控制器的真空检测部件，微控制器分别发送和接收来自其的信号和与微控制器通信的处理器，微控制器处理信号并基于处理的信号发送输出到 处理器，处理器基于处理的输出处理输出并向微控制器发送输入。

公开(公告)号：US06769290B2

公开(公告)日：2004-08-03

申请号：US09789360

申请日：2001-02-21

申请人： Laurent Fabre

发明人： Laurent Fabre

IPC分类号： G01M304

CPC分类号： F02M25/0809

摘要： A method of leak detection in a closed vapor handling system of an automotive vehicle, wherein an engine is shut off, implemented by a system, the method including obtaining a start temperature and start pressure, providing an evaluation temperature, calculating a temperature differential between the start temperature and the evaluation temperature, evaluating whether a pressure switch is closed if the temperature differential is greater than a temperature control value, incrementing a time counter if the pressure switch is not closed and comparing the time counter to a time control value if the pressure switch is not closed. The system includes a pressure switch, a temperature sensing element, and a processor operatively coupled to the pressure switch and the temperature sensing element and receiving, respectively, pressure and temperature signals therefrom, wherein the processor calculates a temperature differential between a start temperature and an evaluation temperature, evaluates whether the pressure switch is closed, increments a time counter, and compares the time counter to the time control value.

摘要翻译： 一种机动车辆的封闭蒸汽处理系统中的泄漏检测方法，其特征在于，通过系统实现发动机的切断，所述方法包括获得启动温度和起动压力，提供评价温度， 启动温度和评估温度，如果温度差大于温度控制值，则评估压力开关是否闭合，如果压力开关未闭合则增加时间计数器，并且如果压力开关温度与时间控制值相比较，则将时间计数器与时间控制值进行比较 开关未关闭。 该系统包括压力开关，温度感测元件和可操作地耦合到压力开关和温度感测元件并且分别从其接收压力和温度信号的处理器，其中处理器计算开始温度和 评估温度，评估压力开关是否关闭，增加时间计数器，并将时间计数器与时间控制值进行比较。

公开(公告)号：US06722189B2

公开(公告)日：2004-04-20

申请号：US09789449

申请日：2001-02-21

申请人： Laurent Fabre

发明人： Laurent Fabre

IPC分类号： G01M1500

CPC分类号： F02M25/0809

摘要： A method of leak detection in a closed vapor handling system of an automotive vehicle, wherein an engine is shut off, implemented by a system, the method including providing pressure switch and a time counter, closing a shut off valve, waiting for a no test delay, evaluating whether the pressure switch is closed, incrementing the time counter if the pressure switch is open and comparing the time counter to a time control value if the pressure switch is open. The system includes a pressure switch, a shut off valve and a processor operatively coupled to the pressure switch and the shut off valve. The processor receives pressure signals from the pressure switch and sends signals to the shut off valve, wherein the processor closes the shut off valve, waits for a no test delay, determines whether the pressure switch is closed, increments a time counter and compares the time counter to a time control value.

摘要翻译： 一种在汽车的封闭蒸气处理系统中的泄漏检测方法，其中发动机由系统实现切断，该方法包括提供压力开关和时间计数器，关闭截止阀，等待无测试 延迟，评估压力开关是否关闭，如果压力开关打开，则增加时间计数器，如果压力开关打开，将时间计数器与时间控制值进行比较。 该系统包括压力开关，截止阀和可操作地联接到压力开关和截止阀的处理器。 处理器从压力开关接收压力信号并将信号发送到截止阀，其中处理器关闭截止阀，等待无测试延迟，确定压力开关是否关闭，增加时间计数器并比较时间 与时间控制值相反。

公开(公告)号：US06626032B2

公开(公告)日：2003-09-30

申请号：US09790187

申请日：2001-02-21

申请人： Laurent Fabre ,  Pierre Calvairac

发明人： Laurent Fabre ,  Pierre Calvairac

IPC分类号： G01M1500

CPC分类号： F02M25/0809

摘要： A method of diagnosing components used for leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing leak detection components including a pressure switch that moves at a given relative vacuum, a control valve that operates to allow and prevent flow therethrough, and a shut off valve that operates to allow and prevent flow therethrough, running an engine, determining whether the pressure switch is closed, purging a canister, specifying a fail condition if the control valve is inoperative after purging, ascertaining whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition if a fail condition is specified, specifying a pass condition if the control valve is functioning after purging, determining whether the shut off valve and pressure switch are malfunctioning if a pass condition is specified based on whether the pressure switch is open, and displaying an error if a component is malfunctioning. The system includes a pressure switch, a control valve, a shut off valve, and a processor operatively coupled to the pressure sensing element, the control valve, and the shut off valve and receiving pressure signals from the pressure sensing element and sending signals to the control valve and the shut off valve, wherein the processor runs an engine, determines whether the pressure switch is closed, purges a canister, specifies a fail condition if the control valve is inoperative, ascertains whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition, specifies a pass condition if the control valve is functioning, determines whether the shut off valve and the pressure switch are malfunctioning, and displays an error if at least one of the pressure switch, the shut off valve, and the control valve is malfunctioning.

公开(公告)号：US06539927B2

公开(公告)日：2003-04-01

申请号：US09790168

申请日：2001-02-21

申请人： Laurent Fabre

发明人： Laurent Fabre

IPC分类号： F02M3302

CPC分类号： F02M25/0809

摘要： A method of leak detection in a closed vapor handling system of an automotive vehicle, wherein an engine is shut off, implemented by a system, the method including obtaining a start temperature and start pressure, providing an evaluation temperature, calculating a temperature differential between the start temperature and the evaluation temperature, incrementing a time counter if the temperature differential is greater than a temperature control value, computing a pressure differential between the start pressure and an evaluation pressure, and comparing the time counter to a time control value if the pressure differential is not greater than a pressure control value. The system includes a pressure sensing element, a temperature sensing element, and a processor operatively coupled to the pressure sensing element and the temperature sensing element and receiving, respectively, pressure and temperature signals therefrom, wherein the processor calculates a temperature differential between a start temperature and an evaluation temperature, increments a time counter, computes a pressure differential between a start pressure and an evaluation pressure, and compares the time counter to the time control value.

摘要翻译： 一种机动车辆的封闭蒸汽处理系统中的泄漏检测方法，其特征在于，通过系统实现发动机的切断，所述方法包括获得启动温度和起动压力，提供评价温度， 开始温度和评估温度，如果温差大于温度控制值，则增加时间计数器，计算起始压力和评估压力之间的压力差，并且如果压差存在则将时间计数器与时间控制值进行比较 不大于压力控制值。 该系统包括压力感测元件，温度感测元件和可操作地耦合到压力感测元件和温度感测元件并且分别从其接收压力和温度信号的处理器，其中处理器计算开始温度 和评估温度，增加时间计数器，计算起始压力和评估压力之间的压差，并将时间计数器与时间控制值进行比较。