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：US5817925A

公开(公告)日：1998-10-06

申请号：US824938

申请日：1997-03-26

申请人： John E. Cook ,  Paul D. Perry ,  Paul V. Terek

发明人： John E. Cook ,  Paul D. Perry ,  Paul V. Terek

IPC分类号： F02M25/08 ,  F02M37/04 ,  G01M3/20

CPC分类号： F02M25/0818

摘要： An on-board diagnostic system for an evaporative emission control system of an internal combustion engine powered vehicle employs a leak detection module that is fluid connected in a vent passage for the evaporative emission space. The leak detection module contains an electric motor driven impeller, a solenoid operated valve assembly that is selectively operable to three positions, and a pressure-responsive switch whose switching characteristic possesses hysteresis corresponding to an upper regulating limit and a lower regulating limit. The valve assembly operates to allow the prime mover to pump gaseous fluid with respect to the evaporative emission space to attain a test pressure in the evaporative emission space corresponding to the upper regulating limit, to close the evaporative emission space and prevent the prime mover from pumping gaseous fluid with respect to the evaporative emission space upon initially attaining the upper regulating limit test pressure within the evaporative emission space, and which allows the prime mover to pump gaseous fluid with respect to the evaporative emission space at a pre-defined volumetric flow rate to rebuild pressure in the evaporative emission space to the upper regulating limit when the pressure has changed to the lower regulating limit due to a leak in the evaporative emission space.

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泄漏检测模块，其在用于蒸发发射空间的排气通道中流体连接。 泄漏检测模块包括电动机驱动的叶轮，可选择性地操作到三个位置的电磁阀组件，以及开关特性具有对应于上调节极限和下调节极限的滞后的压力响应开关。 阀组件操作以允许原动机相对于蒸发发射空间泵送气体流体，以获得对应于上调节极限的蒸发发射空间中的测试压力，以闭合蒸发发射空间并防止原动机泵送 气体流体相对于蒸发发射空间开始达到蒸发发射空间内的上调节极限测试压力，并且允许原动机相对于蒸发发射空间以预定的体积流速将气态流体泵送至 当蒸发排放空间中的泄漏导致压力变为下限时，将蒸发排放空间的压力重新设定为上限。

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：US07086276B2

公开(公告)日：2006-08-08

申请号：US10876683

申请日：2004-06-28

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： G01M19/00

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.

公开(公告)号：US06640620B2

公开(公告)日：2003-11-04

申请号：US10024285

申请日：2001-12-21

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： G01M1900

CPC分类号： F02M25/0809 ,  F02M25/0836

摘要： A leak detection monitor (22; 222) for an on-board evaporative emission leak detection system that detects leakage from an evaporative emission space of a fuel system of an automotive vehicle. One embodiment (22) utilizes engine intake system vacuum to vent the evaporative emission space to atmosphere when the engine is running; another (222), an electromagnet actuator (270, 280). Venting ceases when the engine is shut off. Changes in vapor pressure in the evaporative emission space are monitored over time by electric devices (74; 282) after the engine has been shut off to distinguish between a gross leak, a small leak smaller than a gross leak, and a leak that is at most smaller than a small leak.

公开(公告)号：US06484555B1

公开(公告)日：2002-11-26

申请号：US09543747

申请日：2000-04-05

申请人： Paul D. Perry ,  John E. Cook

发明人： Paul D. Perry ,  John E. Cook

IPC分类号： G01L2700

CPC分类号： F02M25/0854 ,  F02M25/0809 ,  F02M25/0836

摘要： A method of calibrating an integrated pressure management apparatus having a chamber with an interior volume varying in response to fluid pressure in the chamber. A diaphragm partially defining the chamber is displaceable between first and second configurations in response to fluid pressure variations around a certain pressure level. A resilient element applies a force biasing the diaphragm a first configuration and a switch is actuated by the diaphragm in the second configuration. The method includes connecting the chamber to a pressure source at a known pressure level, and adjusting resilient element such that the switch is actuated at the known pressure level.

摘要翻译： 一种校准具有腔室的集成压力管理装置的方法，其具有响应腔室中的流体压力而变化的内部容积。 部分地限定室的隔膜响应于围绕某一压力水平的流体压力变化而在第一和第二构造之间移动。 弹性元件施加将膜片偏置为第一构造的力，并且在第二构造中由隔膜致动开关。 该方法包括将腔室以已知的压力水平连接到压力源，以及调节弹性元件使得开关在已知压力水平下被致动。

公开(公告)号：US06328021B1

公开(公告)日：2001-12-11

申请号：US09540492

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： F02M25/0854 ,  F02M25/0809 ,  F02M25/0836 ,  F16J3/02 ,  G01L7/082

摘要： A diaphragm for 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 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： 用于集成压力管理系统的隔膜管理压力并检测燃料系统中的泄漏。 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。