公开(公告)号：US5967124A

公开(公告)日：1999-10-19

申请号：US65964

申请日：1998-04-24

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： F02M25/08 ,  F02M33/04

CPC分类号： F02M25/0818

摘要： An on-board evaporative emission leak detection system has a module for detecting leakage from an evaporative emission space of a fuel system of an automotive vehicle. Interior space of the module's enclosure is communicated to atmosphere. A pump is disposed within space and has an inlet communicated to the interior space and a flow passage at its outlet to allow the pump to create pressure in the evaporative emission space suitable for performance of a leak test. A vent valve is disposed within space and is selectively operable to vent and not vent the flow passage to space. An electromagnet actuator has a single electric coil that operates both the pump and the vent valve by cantilever-mounted armatures responsive to electric control current in the coil having a first current component for controlling the pump and a second current component for controlling the vent valve.

摘要翻译： 机载蒸发排放泄漏检测系统具有用于检测来自机动车辆的燃料系统的蒸发排放空间的泄漏的模块。 模块外壳的内部空间通向大气。 泵设置在空间内并且具有连通到内部空间的入口和在其出口处的流动通道，以允许泵在适于进行泄漏测试的蒸发发射空间中产生压力。 排气阀设置在空间内并且可选择性地操作以排出并且不将流动通道排放到空间。 电磁致动器具有单个电线圈，其响应于具有用于控制泵的第一电流分量的线圈中的电控制电流和用于控制排气阀的第二电流分量，通过悬臂安装的电枢来操作泵和排气阀。

公开(公告)号：US5499614A

公开(公告)日：1996-03-19

申请号：US333824

申请日：1994-11-03

申请人： Murray F. Busato ,  Paul D. Perry ,  John E. Cook

发明人： Murray F. Busato ,  Paul D. Perry ,  John E. Cook

IPC分类号： F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0809

摘要： An on-board diagnostic system for an evaporative emission control system of an internal combustion engine powered vehicle employs a positive displacement reciprocating pump to create in evaporative emission space a pressure that differs significantly from ambient atmospheric pressure. The pump is powered by using engine intake manifold vacuum to force an intake stroke during which both an internal spring is increasingly compressed and a charge of ambient atmospheric air is created in an air pumping chamber space. Vacuum is then removed, and the spring relaxes to force a compression stroke wherein a portion of the air charge is forced into the evaporative emission space. The pump operation is under the control of a computer that contains an algorithm for operating the pump in particular modes of operation to arrive at a decision concerning integrity of the evaporative emission space against leakage.

摘要翻译： 用于内燃机动力车辆的蒸发排放控制系统的车载诊断系统采用正排量往复泵，以在蒸发发射空间中产生与环境大气压力显着不同的压力。 泵通过使用发动机进气歧管真空来驱动，以迫使进气冲程，其中内部弹簧越来越多地被压缩，并且在空气泵送空间中产生周围大气的空气。 然后除去真空，并且弹簧松弛以迫使压缩冲程，其中空气充注的一部分被迫进入蒸发发射空间。 泵操作在计算机的控制下，其包含用于在特定操作模式下操作泵的算法，以得出关于蒸发排放空间的抵抗泄漏的完整性的决定。

公开(公告)号：US07040301B2

公开(公告)日：2006-05-09

申请号：US10102977

申请日：2002-03-22

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： F02M33/02

CPC分类号： F02M25/0809 ,  F02M25/0836 ,  F02M25/0854 ,  F02M2025/0845 ,  Y10T137/7771 ,  Y10T137/7782

摘要： A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

公开(公告)号：US06474314B1

公开(公告)日：2002-11-05

申请号：US09540491

申请日：2000-03-31

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： F02M3302

CPC分类号： F02M25/0809 ,  F02M25/0836 ,  F02M25/0854 ,  F02M2025/0845 ,  Y10T137/7771 ,  Y10T137/7782

摘要： A fuel system supplying fuel to an internal combustion engine of a vehicle. The fuel system includes an integrated pressure management system managing pressure and detecting leaks in the fuel system. The integrated pressure management system also performs a leak diagnostic for the headspace in a fuel tank, a canister that collects volatile fuel vapors from the headspace, a purge valve, and all associated hoses and connections.

摘要翻译： 一种向车辆的内燃机供给燃料的燃料系统。 燃料系统包括管理压力并检测燃料系统中的泄漏的集成压力管理系统。 集成压力管理系统还对燃料箱中的顶部空间进行泄漏诊断，从顶部空间收集挥发性燃料蒸气的罐，净化阀以及所有相关联的软管和连接。

公开(公告)号：US06460566B1

公开(公告)日：2002-10-08

申请号：US09542052

申请日：2000-03-31

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： F02M3302

CPC分类号： F02M25/0809 ,  F02M25/0836 ,  F02M25/0854 ,  Y10T137/7771 ,  Y10T137/7782

摘要： An integrated pressure management system manages pressure and detects leaks in a fuel system. The integrated pressure management system also performs a leak diagnostic for the head space in a fuel tank, a canister that collects volatile fuel vapors from the head space, a purge valve, and all associated.

公开(公告)号：US6016793A

公开(公告)日：2000-01-25

申请号：US107517

申请日：1998-06-30

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0818

摘要： A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of an automotive vehicle fuel system. A pump disposed within interior space of the module has an inlet in communication with the interior space and a flow passage through which the evaporative emission space is pressurized by the pump. A vent valve within the interior space is selectively operable to a first state that vents the flow passage to the interior space of the module and to a second state that does not vent the flow passage to the interior space. An electromechanical actuator within the interior space operates both the pump and the vent valve. The actuator has an electromagnet coil disposed on the middle leg of an E-shaped core comprising a stack of ferromagnetic laminations. A first magnetically responsive lever for operating the pump is mounted for pivotal motion about a first pivot axis proximate a distal end of one of the outer legs of the core, and a second magnetically responsive lever for operating the vent valve is mounted for pivotal motion about a second pivot axis that is disposed proximate a distal end of the other outer leg of the core.

摘要翻译： 一种用于检测来自机动车辆燃料系统的蒸发排放空间的泄漏的车载蒸发排放物泄漏检测系统的模块。 设置在模块的内部空间内的泵具有与内部空间连通的入口和通过泵对蒸发发射空间进行加压的流动通道。 内部空间内的排气阀可选择性地操作为将流动通道通向模块的内部空间的第一状态以及不将流动通道排放到内部空间的第二状态。 内部空间内的机电致动器同时操作泵和排气阀。 致动器具有设置在E形芯的中间支脚上的电磁线圈，其包括一叠铁磁叠片。 用于操作泵的第一磁响应杆被安装成围绕靠近芯的一个外腿的远端的第一枢转轴线枢转运动，并且用于操作排气阀的第二磁响应杆被安装成围绕 设置在所述芯的另一外腿的远端附近的第二枢转轴线。

公开(公告)号：US6009746A

公开(公告)日：2000-01-04

申请号：US107519

申请日：1998-06-30

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： F02M25/08 ,  F02M37/04

CPC分类号： F02M25/0818

摘要： A module for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of an automotive vehicle fuel system. A pump disposed within interior space of the module has an inlet in communication with the interior space and an outlet that communicates through a flow passage by with the evaporative emission space. A vent valve within the interior space is selectively operable to a first state that vents the flow passage to the interior space of the module, thereby venting the evaporative emission space to atmosphere, and to a second state that does not vent the flow passage to the interior space. An electromechanical actuator within the interior space operates the pump and the vent valve by respective magnetically responsive levers. For absorbing impact of a lever with stops, an elastomeric part is disposed on an arm of the lever.

摘要翻译： 一种用于检测来自机动车辆燃料系统的蒸发排放空间的泄漏的车载蒸发排放物泄漏检测系统的模块。 设置在模块的内部空间内的泵具有与内部空间连通的入口和通过流动通道与蒸发发射空间连通的出口。 内部空间内的排气阀可选择性地操作到第一状态，其将流动通道通向模块的内部空间，从而将蒸发发射空间排放到大气中，并将第二状态排放到不将流动通道排放到 内部空间。 内部空间内的机电致动器通过相应的磁响应杆来操作泵和排气阀。 为了吸收具有止动件的杠杆的冲击，弹性体部件设置在杠杆的臂上。

公开(公告)号：US5551406A

公开(公告)日：1996-09-03

申请号：US447166

申请日：1995-05-19

申请人： Gary Everingham ,  John E. Cook ,  Paul D. Perry ,  Murray F. Busato

发明人： Gary Everingham ,  John E. Cook ,  Paul D. Perry ,  Murray F. Busato

IPC分类号： F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0836

摘要： The purge valve embodies a solenoid that has a linear force vs. current characteristic acting on the armature. Effects of hysteresis are minimized by certain constructional features and the manner of operating the valve. Several embodiments are disclosed.

摘要翻译： 吹扫阀体现了螺线管，其具有作用在电枢上的线性力与电流特性。 通过某些结构特征和操作阀的方式，使滞后效应最小化。 公开了几个实施例。

公开(公告)号：US5483942A

公开(公告)日：1996-01-16

申请号：US393952

申请日：1995-02-24

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： G01M3/26 ,  F02M25/08 ,  F02M33/02

CPC分类号： F02M25/0818

摘要： Differential flow sensing through respective flow path portions of a system for detecting leakage from an evaporative emission control system. A series flow path comprises a first flow sensor for sensing the entire output flow of an impeller pump used to positively pressurized the system under test, a second sensor in a portion of the series flow path that is downstream of the first flow sensor, and a calibrated orifice downstream of the second flow sensor. A branch circuit to the evaporative emission space under leakage test tees into the aforementioned series circuit between the first flow sensor and the second flow sensor. A differential amplifier receives signal from the respective sensors. Any difference in sensed flows, once the pressure has been brought to a predetermined pressure, is output by the differential amplifier to signify leakage in an amount correlated with the sensed difference in the flows.

摘要翻译： 通过用于检测来自蒸发排放控制系统的泄漏的系统的各个流路部分的差动流量检测。 串联流动路径包括第一流量传感器，用于感测用于积极加压待测系统的叶轮泵的整个输出流，在第一流量传感器下游的串联流动路径的一部分中的第二传感器，以及 校准孔在第二流量传感器下游。 在泄漏测试下的蒸发发射空间的分支电路进入第一流量传感器和第二流量传感器之间的上述串联电路。 差分放大器接收来自相应传感器的信号。 一旦压力达到预定压力，感测到的流量的任何差异就被差分放大器输出，以表示与所感测的流量差有关的量的泄漏。

公开(公告)号：US07194893B2

公开(公告)日：2007-03-27

申请号：US09165772

申请日：1998-10-02

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： G01M3/34

CPC分类号： F02M25/0818 ,  F02M25/0809

摘要： A method and sensor or sensor subsystem permit improved evaporative leak detection in an automotive fuel system. The sensor or sensor subsystem computes temperature-compensated pressure values, thereby eliminating or reducing false positive or other adverse results triggered by temperature changes in the fuel tank. The temperature-compensated pressure measurement is then available for drawing an inference regarding the existence of a leak with reduced or eliminated false detection arising as a result of temperature fluctuations.

摘要翻译： 一种方法和传感器或传感器子系统允许在汽车燃料系统中改进蒸发泄漏检测。 传感器或传感器子系统计算温度补偿压力值，从而消除或减少由燃料箱温度变化触发的假阳性或其他不利结果。 然后，温度补偿压力测量可用于绘制关于由于温度波动引起的减少或消除的错误检测的泄漏的存在的推断。