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    Evaporative emission control for very small leak detection
    3.
    发明授权
    Evaporative emission control for very small leak detection 有权
    蒸发排放控制非常小的泄漏检测

    公开(公告)号：US06314797B1

    公开(公告)日：2001-11-13

    申请号：US09385206

    申请日：1999-08-30

    申请人： Gary D. Dawson ,  William B. Blomquist ,  Chris J. Booms

    发明人： Gary D. Dawson ,  William B. Blomquist ,  Chris J. Booms

    IPC分类号： G01M304

    CPC分类号： F02M25/0809 ,  F02D41/042

    摘要： A method is provided for detecting a very small leak in an evaporative emission control system of an automotive vehicle. The method includes sealing the evaporative emission control system at a key-off event and monitoring a vacuum switch coupled to the evaporative emission control system for a closing event due to a natural vacuum created in the evaporative emission control system as it cools. If the closing event is not detected, the method determines if a leak detection timer has exceeded a predetermined threshold value. If the timer has exceeded the predetermined threshold value, the method sets a fault code indicating that the very small leak has been detected. Preferably, the leak detection timer includes a first time value corresponding to an amount of time the automotive vehicle has been operating since a previous small leak detection test was conducted and a second time value corresponding to an amount of time the automotive vehicle has been inoperative since a previous small leak detection test was conducted. The first time value includes a series of individual trip times of the automotive vehicle while the second time value includes a series of individual inoperative session times of the automotive vehicle.

    摘要翻译： 提供一种用于检测机动车辆的蒸发排放控制系统中的非常小的泄漏的方法。 该方法包括在关闭事件时封闭蒸发排放控制系统，并监测耦合到蒸发排放控制系统的真空开关，由于在蒸发排放控制系统冷却时产生的自然真空，关闭事件。 如果未检测到关闭事件，则该方法确定泄漏检测定时器是否已经超过预定阈值。 如果定时器超过预定阈值，则该方法设置指示已经检测到非常小的泄漏的故障代码。 优选地，泄漏检测定时器包括与从前进行的小型泄漏检测试验开始的机动车辆已经运行的时间量相对应的第一时间值，以及对应于机动车辆已经不工作的时间量的第二时间值 进行了以前的小型泄漏检测试验。 第一时间值包括机动车辆的一系列单独行程时间，而第二时间值包括机动车辆的一系列单独的非操作会话时间。

    Method of pinched line detection for an evaporative emission control system
    4.
    发明授权
    Method of pinched line detection for an evaporative emission control system 失效
    蒸发排放控制系统的夹线检测方法

    公开(公告)号：US5616836A

    公开(公告)日：1997-04-01

    申请号：US611138

    申请日：1996-03-05

    申请人： William B. Blomquist ,  Gary D. Dawson ,  Roland T. Richardson ,  Glen Tallarek

    发明人： William B. Blomquist ,  Gary D. Dawson ,  Roland T. Richardson ,  Glen Tallarek

    IPC分类号： G01M3/02 ,  G01M15/00

    CPC分类号： G01M3/025

    摘要： A method of pinched line detection for an evaporative emission control system to determine if a pinched line is present within the system includes the steps of pulsing a leak detection pump at a predetermined rate and determining if a last pump period is less than a predetermined possible pinched line period limit. The method also includes the steps of concluding a possible pinched line if the last pump period is not less than the possible pinched line period limit and concluding that there is not a possible pinched line if the last pump period is greater than or equal to the possible pinched line period limit.

    摘要翻译： 一种用于蒸发排放控制系统的夹紧线检测方法，用于确定系统内是否存在夹紧线，包括以预定速率脉冲泄漏检测泵的步骤，以及确定最后泵周期是否小于预定的可能夹紧 行期限。 该方法还包括以下步骤：如果最后一个泵周期不小于可能的夹持线周期极限，则确定可能的夹紧线，并且断定如果最后一个泵周期大于或等于可能的 限制行期限。

    Leak detection assembly
    5.
    发明授权
    Leak detection assembly 失效
    泄漏检测组件

    公开(公告)号：US5495749A

    公开(公告)日：1996-03-05

    申请号：US500108

    申请日：1995-07-10

    申请人： Gary D. Dawson ,  William B. Blomquist

    发明人： Gary D. Dawson ,  William B. Blomquist

    IPC分类号： F02M25/08 ,  F04B9/12 ,  F02M33/02

    CPC分类号： F04B9/1215 ,  F02M25/0818

    摘要： A leak detection assembly for an evaporative emission control system in an automotive vehicle including a fuel tank, a canister for collecting volatile fuel vapors from the fuel tank, a purge valve disposed between the canister and an intake manifold of an engine operative to allow flow of the fuel vapors from the canister to the intake manifold, a vacuum actuated pump in communication with the canister, and a vent control valve operative to selectively allow and prevent communication between the canister and an atmospheric vent of the vacuum actuated pump, the leak detection assembly including a three-port solenoid fluidly connected to the intake manifold and a second atmospheric vent, and a vacuum line fluidly connecting the three-port solenoid to the vent control valve, the three-port solenoid selectively communicating with the intake manifold to allow a vacuum in the vacuum line during a first operating mode to close the vent control valve and selectively communicating with the second atmospheric vent during a second operating mode to open the vent control valve.

    摘要翻译： 一种用于汽车中的蒸发排放控制系统的泄漏检测组件，包括燃料箱，用于从燃料箱收集挥发性燃料蒸气的罐，设置在罐和发动机的进气歧管之间的净化阀，其操作以允许 从所述罐到所述进气歧管的燃料蒸汽，与所述罐连通的真空致动泵以及可操作地选择性地允许和防止所述罐与所述真空致动泵的大气通气口之间的连通的排气控制阀，所述泄漏检测组件 包括流体连接到进气歧管和第二大气通风口的三端口电磁阀和将三端口螺线管与通气控制阀流体连接的真空管线，三端口电磁阀与进气歧管选择性连通以允许真空 在第一操作模式期间在真空管线中关闭排气控制阀并选择性地与第二操作器通气 在第二操作模式下打开通风控制阀。

    Boost purge ejector tee arrangement
    8.
    发明授权
    Boost purge ejector tee arrangement 有权
    提升吹扫喷头三通排列

    公开(公告)号：US09353711B2

    公开(公告)日：2016-05-31

    申请号：US14048790

    申请日：2013-10-08

    申请人： Daniel H Edmund ,  Roger C Sager ,  William B Blomquist ,  Michael R Grote ,  Frederick A Gibb ,  Christopher G Hadre

    发明人： Daniel H Edmund ,  Roger C Sager ,  William B Blomquist ,  Michael R Grote ,  Frederick A Gibb ,  Christopher G Hadre

    IPC分类号： F02M25/08 ,  F02M35/10

    CPC分类号： F02M35/10222 ,  F02M25/0872

    摘要： A boost purge ejector tee arrangement for a fuel vapor emissions system can include a boost purge ejector tee having a body that can define a first inlet port, a second inlet port and an outlet port. The first inlet port and the outlet port can be fluidly coupled along a first flow path. The body can define a second flow path from the second inlet port that can intersect the first flow path upstream of the outlet port. A nozzle can be positioned in the first flow path such that an outlet of the nozzle can be proximate the intersection of the second flow path with the first flow path. The boost purge ejector tee can be integrated into an air box that can be associated with an engine such that the outlet port exits into an inside of the air box.

    摘要翻译： 用于燃料蒸汽排放系统的升压吹扫喷射器三通装置可以包括具有主体的增压吹扫喷射器三通，其可以限定第一入口端口，第二入口端口和出口端口。 第一入口端口和出口端口可以沿着第一流动路径流体耦合。 主体可以限定来自第二入口的第二流动路径，其可以与出口端口的上游的第一流动路径相交。 喷嘴可以定位在第一流动路径中，使得喷嘴的出口可以靠近第二流动路径与第一流动路径的交叉点。 升压吹扫喷射器T形件可以集成到可与发动机相关联的空气箱中，使得出口端口离开空气箱的内部。

    Seal cleansing routine
    9.
    发明授权
    Seal cleansing routine 有权
    密封清洁程序

    公开(公告)号：US06374847B1

    公开(公告)日：2002-04-23

    申请号：US09385251

    申请日：1999-08-30

    申请人： Gary D. Dawson ,  William B. Blomquist ,  Chris J. Booms

    发明人： Gary D. Dawson ,  William B. Blomquist ,  Chris J. Booms

    IPC分类号： F02M3500

    CPC分类号： F02M25/0809 ,  Y10T137/043 ,  Y10T137/4273

    摘要： A method is provided for cleansing a seal of a device used for sealing an evaporative emission control system of an automotive vehicle. The method starts by determining if a request to close the device has been made. If the request to close the device has been made, the method cycles the device a plurality of times to press and lift the seal off of a seat repeatedly. The method also determines if the seal is closed after the cycling step. If the seal is not closed after the cycling step, the method closes the seal. Preferably, the cycling step includes cycling the device at a pre-selected duty cycle, frequency and cycle count. The duty cycle, frequency, and cycle count correspond to calibration tables prepared for the particular device employed to insure that the seal strikes its seat about three times before sealing.

    摘要翻译： 提供了一种用于清洁用于密封机动车辆的蒸发排放控制系统的装置的密封件的方法。 该方法从确定是否关闭设备的请求开始。 如果关闭设备的请求已经进行，则该方法多次循环设备以将密封件反复按压并提升密封件。 该方法还确定在循环步骤之后密封件是否关闭。 如果在循环步骤之后密封没有关闭，则该方法关闭密封。 优选地，循环步骤包括以预先选择的占空比，频率和循环计数循环设备。 占空比，频率和周期数对应于为特定设备准备的校准表，用于确保在密封前密封件撞击其座椅大约三次。

    Evaporative system leak detection upon refueling
    10.
    发明授权
    Evaporative system leak detection upon refueling 有权
    加油时的蒸发系统泄漏检测

    公开(公告)号：US07204237B2

    公开(公告)日：2007-04-17

    申请号：US11100848

    申请日：2005-04-07

    申请人： Chris J Booms ,  Roger C Sager ,  William B Blomquist

    发明人： Chris J Booms ,  Roger C Sager ,  William B Blomquist

    IPC分类号： F02M33/02 ,  F02B77/08 ,  G01M3/04 ,  G01M19/00

    CPC分类号： F02M25/0809

    摘要： A loose or missing fuel cap detection method for an evaporative emission control system of an automotive vehicle detects a loose or missing fuel cap based in part on whether fuel level changed. The method determines whether the fuel level changed, which is indicative of a refueling event. The method then determines if one or more leaks are present. If the fuel level changed and one or more leaks are present, the method determines that the fuel cap is loose or missing.

    摘要翻译： 机动车辆的蒸发排放控制系统的松散或缺失的燃料盖检测方法部分地基于燃料水平是否变化来检测松动或缺失的燃料盖。 该方法确定燃料水平是否改变，这表示加油事件。 该方法然后确定是否存在一个或多个泄漏。 如果燃油液位变化并且存在一个或多个泄漏，则该方法确定燃油盖松动或缺失。