公开(公告)号：US06247456B1

公开(公告)日：2001-06-19

申请号：US09039795

申请日：1998-03-16

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： F02M3704

CPC分类号： F02M25/0836 ,  F02M2025/0845

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 by an associated control circuit.

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相关控制电路操作阀的方式，使滞后效应最小化。

公开(公告)号：US6089081A

公开(公告)日：2000-07-18

申请号：US235995

申请日：1999-01-22

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： F02M25/08 ,  G01M15/00

CPC分类号： F02M25/0809

摘要： A method and apparatus for detecting leakage from an evaporative emission space (14, 18) of a vehicle fuel system by utilizing naturally occurring vacuum that can occur under certain favorable conditions after a fuel-consuming engine (12) that powers an automotive vehicle has been turned off. If there is no leakage, vapor pressure in the fuel system will begin to decrease. If it is assumed that the vapor pressure was approximately atmospheric when the engine was turned off, and that no leakage existed, ensuing cooling will create increasing vacuum in headspace of the fuel tank as the temperature drops. In the absence of leakage, a well-defined relationship exists. Measurements of physical parameters (24, 26) characterizing fluid conditions in the fuel tank are taken as cooling proceeds and processed. Results are evaluated to obtain leakage information.

摘要翻译： 一种用于通过在燃料消耗型发动机（12）为机动车辆供电的燃料消耗型发动机（12）之后利用可能在某些有利条件下发生的自然发生的真空来检测来自车辆燃料系统的蒸发排放空间（14,18）的泄漏的方法和装置 关掉。 如果没有泄漏，燃料系统中的蒸气压将开始减小。 如果假定当发动机关闭时蒸气压大致为大气压，并且不存在泄漏，随着冷却将随着温度下降而在燃料箱的顶部空间中产生增加的真空。 在没有泄漏的情况下，存在明确的关系。 将表征燃料箱中的流体状况的物理参数（24,26）的测量作为冷却进行和处理。 评估结果以获得泄漏信息。

公开(公告)号：US6050245A

公开(公告)日：2000-04-18

申请号：US976387

申请日：1997-11-21

申请人： John E. Cook ,  Paul D. Perry ,  Craig A. Weldon

发明人： John E. Cook ,  Paul D. Perry ,  Craig A. Weldon

IPC分类号： F02B23/10 ,  F02M25/08 ,  F16K31/06 ,  F16K37/00 ,  F02M33/02

CPC分类号： F02M25/0836 ,  F02B23/104 ,  Y02T10/125

摘要： A vapor collection canister vent valve contains both an electric pressure sensor for measuring evaporative emission space pressure during a diagnostic test and an electric actuator for operating the vent valve closed during a diagnostic test. Use of the valve in an evaporative emission control system reduces the number of connections, both electrical and fluid, that are required to install the valve in a system. The remote location of the pressure sensor damps the effect of pressure transients, such as those due to tank fuel slosh, on the sensor.

摘要翻译： 蒸气收集罐排气阀包含用于在诊断测试期间测量蒸发排放空间压力的电压传感器和用于在诊断测试期间关闭排气阀的电致动器。 在蒸发排放控制系统中使用阀门减少了将阀安装在系统中所需的电气和液体的连接数量。 压力传感器的偏远位置可以抑制压力瞬变的影响，例如由于油箱燃油而产生的压力瞬变对传感器的影响。

公开(公告)号：US6016691A

公开(公告)日：2000-01-25

申请号：US107515

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, and corresponding method that calibrates a leak detection module pump to set a desired stroke of a moveable wall in the pump of such evaporative emission leak detection 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 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. An eccentric cam for calibrating a lever is disposed for abutment by an arm of the lever and turned to a position to secure a desired relationship between the pump and actuator.

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泄漏检测系统的模块，以及校准泄漏检测模块泵以设定泵的可移动壁的期望冲程的相应方法 这种蒸发排放泄漏检测系统。 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。 设置用于校准杠杆的偏心凸轮，用于与杠杆的臂邻接并转动到一个位置，以确保泵和致动器之间所需的关系。

公开(公告)号：US5533488A

公开(公告)日：1996-07-09

申请号：US391393

申请日：1995-02-27

申请人： John E. Cook ,  Paul D. Perry

发明人： John E. Cook ,  Paul D. Perry

IPC分类号： F02M25/07 ,  F02M25/08 ,  G05D16/06

CPC分类号： G05D16/0655 ,  F02M25/0836 ,  F02M26/57 ,  Y10S137/907

摘要： A vacuum sustaining valve (VSV) for temporarily sustaining at least some engine intake manifold vacuum to an EGR valve when engine intake manifold vacuum falls below a predetermined value. The VSV has an inlet port, an outlet port, and a flow path between the two ports. A check valve is disposed with the flow path and is selectively positioned in accordance with manifold vacuum. When manifold vacuum is above a predetermined magnitude, the check valve is positioned to allow bi-directional flow between the two ports. When manifold vacuum is below the predetermined magnitude, the check valve is positioned to function as a check that allows vacuum to pass from the inlet port to the outlet port, but not in the opposite direction.

摘要翻译： 一种真空维持阀（VSV），用于当发动机进气歧管真空度低于预定值时暂时维持至EGR阀的至少一些发动机进气歧管真空。 VSV具有入口端口，出口端口和两个端口之间的流路。 止回阀设置有流动路径，并且根据歧管真空选择性地定位。 当歧管真空度超过预定值时，止回阀被定位成允许两个端口之间的双向流动。 当歧管真空度低于预定大小时，止回阀被定位成用作允许真空从入口到出口而不是相反方向的检查。

公开(公告)号：US5474050A

公开(公告)日：1995-12-12

申请号：US372264

申请日：1995-01-13

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

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

IPC分类号： F02M25/08 ,  F02M37/04

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 rate at which the pump reciprocates to alternately execute intake and compression strokes indicates the pressure and flow through a leak in the evaporative emission space. Detection of this rate serves as a measurement of leakage for the purpose of distinguishing integrity of the evaporative emission space from non-integrity. The disclosed pump has a novel arrangement of its internal valving that reduces the number of parts required in comparison to a previous pump.

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。 泵往复运动以交替执行进气和压缩冲程的速率表示压力和通过蒸发发射空间中的泄漏的流量。 为了区分蒸发排放空间的完整性和非完整性，该速率的检测用作泄漏的测量。 所公开的泵具有其内部阀门的新颖布置，其与先前的泵相比减少了所需部件的数量。

公开(公告)号：US4869461A

公开(公告)日：1989-09-26

申请号：US234440

申请日：1988-08-18

申请人： Paul D. Perry ,  Julian Czajkowski

发明人： Paul D. Perry ,  Julian Czajkowski

IPC分类号： F02M25/08 ,  F16K31/06

CPC分类号： F16K31/0658 ,  F02M25/0836 ,  F02M2025/0845

摘要： A flow rate valve comprising a non-magnetic housing comprising a central cavity and a pressure chamber, first and second ports extending into the pressure chamber, the interior end of the first port forming a valve seat. A bobbin is received within the cavity including a coil and a central blind bore enclosed at one end. The bobbin and housing including opposingly situated circumferential grooves. An armature assembly comprising a cylindrical armature within the bore, and a valve element movable with the armature between first and second positions, for opening and closing the valve seat and a motion limiter for limiting armature motion to prevent same from impacting the bottom of the bore in response to a magnetic field generated by the coil.

摘要翻译： 一种包括非磁性壳体的流量阀，包括中心空腔和压力室，延伸进入压力室的第一和第二端口，第一端口的内部端部形成阀座。 线轴被容纳在腔内，包括线圈和封闭在一端的中心盲孔。 线轴和壳体包括相对定位的圆周槽。 一种电枢组件，其包括孔内的圆柱形衔铁，以及阀元件，其可在衔铁处于第一和第二位置之间移动，用于打开和关闭阀座;以及运动限制器，用于限制电枢运动，以防止其撞击孔的底部 响应于由线圈产生的磁场。

公开(公告)号：US07562560B1

公开(公告)日：2009-07-21

申请号：US11517905

申请日：2006-09-08

申请人： Paul D. Perry

发明人： Paul D. Perry

IPC分类号： G01M3/04

CPC分类号： F02M25/0818 ,  F02M25/0827

摘要： A technique is provided for detecting leaks in a fuel system such as an automotive fuel system. The technique complements an on-board diagnostics evaporative leak monitor that uses natural vacuum leak detection (NVLD). The technique utilizes the same switch and valve utilized by NVLD.Before engine shut-down, the system maintains a vacuum in the fuel tank and also provides a low-level purge flow. Upon engine shut-down, a timer is started and the NVLD switch is monitored to determine how long the vacuum is maintained in the tank. If the vacuum is maintained longer than a predetermined time period, then the system determines that the leak test is passed. If the vacuum decays faster than the predetermined time period, then the NVLD test is performed and system determines that the system passes the leak test if the NVLD test is passed.

摘要翻译： 提供了一种用于检测诸如汽车燃料系统的燃料系统中的泄漏的技术。 该技术补充了使用自然真空泄漏检测（NVLD）的车载诊断蒸发泄漏监测器。 该技术利用NVLD使用的相同开关和阀门。 在发动机关闭之前，系统在燃油箱中保持真空并且还提供低水平的吹扫流量。 在发动机关闭时，启动定时器，监控NVLD开关，以确定油箱内真空度保持多长时间。 如果真空保持长于预定时间段，则系统确定泄漏测试通过。 如果真空衰减速度比预定时间快，则执行NVLD测试，并且如果通过NVLD测试，则系统确定系统通过泄漏测试。

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：US07004014B2

公开(公告)日：2006-02-28

申请号：US10736773

申请日：2003-12-17

申请人： Paul D. Perry ,  Andre Veinotte

发明人： Paul D. Perry ,  Andre Veinotte

IPC分类号： G01M3/00

CPC分类号： F02M25/0809 ,  F02M25/0836

摘要： An apparatus, system and method of establishing a threshold for a leak detection test that is performed on a headspace of a fuel system. A fuel vapor pressure management apparatus includes a housing, a pressure operable device, and a sensor. The housing defines an interior chamber. The pressure operable device separates the interior chamber into first and second portions, and includes a poppet that moves along an axis and a seal that is adapted to cooperatively engage the poppet. A first arrangement of the pressure operable device occurs during the leak detection test when the seal is in a first deformed configuration. A sensor detects the first arrangement of the pressure operable device during the leak detection test. And a processor is coupled to the sensor and reduces sensitivity of the fuel vapor pressure management apparatus during the leak detection test.

摘要翻译： 一种在燃料系统的顶部空间上建立用于泄漏检测测试的阈值的装置，系统和方法。 燃料蒸气压力管理装置包括壳体，压力可操作装置和传感器。 壳体限定内部室。 压力可操作装置将内部室分离成第一和第二部分，并且包括沿轴线移动的提升阀和适于协作地接合提升阀的密封件。 当密封件处于第一变形构造时，在泄漏检测测试期间发生压力可操作装置的第一布置。 在泄漏检测测试期间，传感器检测压力可操作装置的第一布置。 并且处理器耦合到传感器并且在泄漏检测测试期间降低燃料蒸气压力管理装置的灵敏度。