Method of leak detection during low engine vacuum for an evaporative
emission control system
    2.
    发明授权
    Method of leak detection during low engine vacuum for an evaporative emission control system 失效
    用于蒸发排放控制系统的低发动机真空期间的泄漏检测方法

    公开(公告)号:US5715799A

    公开(公告)日:1998-02-10

    申请号:US610947

    申请日:1996-03-05

    IPC分类号: F02M25/08 F02M37/04

    CPC分类号: F02M25/0818

    摘要: A method of leak detection for an evaporative emission control system during periods of low engine vacuum includes the steps of pulsing a leak detection pump at a predetermined rate and determining whether engine vacuum level is low. The method also includes the steps of maintaining pressurization of the evaporative emission control system if the engine vacuum level is low, maintaining pressurization behind a vapor canister vent valve if the engine vacuum level is low, and detecting for leaks in the evaporative emission control system after a normal engine vacuum level is attained.

    摘要翻译: 在低发动机真空期间的蒸发排放控制系统的泄漏检测方法包括以预定速率脉冲泄漏检测泵并确定发动机真空度是否低的步骤。 该方法还包括以下步骤:如果发动机真空度低,则保持蒸发排放控制系统的加压,如果发动机真空度低,则在蒸汽罐排气阀后面保持加压,以及在蒸发排放控制系统中的泄漏检测之后 达到正常的发动机真空度。

    Method of testing an evaporative emission control system
    3.
    发明授权
    Method of testing an evaporative emission control system 失效
    蒸发排放控制系统的测试方法

    公开(公告)号:US5606121A

    公开(公告)日:1997-02-25

    申请号:US611137

    申请日:1996-03-05

    IPC分类号: G01M3/32 G01M15/00

    CPC分类号: G01M3/3236

    摘要: A method of testing an evaporative emission control system to determine if the evaporative emission control system has reached a predetermined pressure includes the steps of pulsing a leak detection pump at a predetermined rate and determining if a last pump period is greater than or equal to a predetermined test mode period threshold. The method also includes the steps of pressurizing the evaporative emission control system if the last pump period is less than a test mode period threshold and continuing the method if the last pump period is equal to or greater than the test mode period threshold.

    摘要翻译: 一种测试蒸发排放控制系统以确定蒸发排放控制系统是否已经达到预定压力的方法包括以预定速率脉动泄漏检测泵的步骤,并且确定最后泵周期是否大于或等于预定的 测试模式周期阈值。 该方法还包括以下步骤:如果最后泵周期小于测试模式周期阈值,则对蒸发排放控制系统进行加压,并且如果最后泵周期等于或大于测试模式周期阈值,则继续该方法。

    Purge system flow monitor and method
    4.
    发明授权
    Purge system flow monitor and method 失效
    吹扫系统流量监测器和方法

    公开(公告)号:US5651349A

    公开(公告)日:1997-07-29

    申请号:US570219

    申请日:1995-12-11

    CPC分类号: F02M25/0809 F02M25/08

    摘要: A system and method of monitoring the purge flow in an evaporative emission control purge system of a motor vehicle. Signals indicative of engine speed, fuel control and automatic idle speed position are measured and used to determine whether the purge flow system is operating properly. With purge flow activated, the amount of purge flow is increased in accordance with a ramping rate and the measured signals are monitored to determine whether or not a change occurs in any one of the engine speed, fuel control and AIS position signals.

    摘要翻译: 一种在机动车辆的蒸发排放控制清除系统中监测吹扫流量的系统和方法。 测量指示发动机转速,燃料控制和自动怠速位置的信号,并用于确定吹扫流量系统是否正常工作。 随着清洗流量的激活,清洗流量根据斜坡率增加,监测测量信号以确定发动机转速,燃料控制和AIS位置信号中是否发生变化。

    Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery
    6.
    发明授权
    Battery control system for hybrid vehicle and method for controlling a hybrid vehicle battery 有权
    用于混合动力车辆的电池控制系统和用于控制混合动力车辆电池的方法

    公开(公告)号:US07489101B2

    公开(公告)日:2009-02-10

    申请号:US10936370

    申请日:2004-09-08

    IPC分类号: H02J7/00 H02J7/14

    摘要: A battery control system for hybrid vehicle includes a hybrid powertrain battery, a vehicle accessory battery, and a prime mover driven generator adapted to charge the vehicle accessory battery. A detecting arrangement is configured to monitor the vehicle accessory battery's state of charge. A controller is configured to activate the prime mover to drive the generator and recharge the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a first predetermined level, or transfer electrical power from the hybrid powertrain battery to the vehicle accessory battery in response to the vehicle accessory battery's state of charge falling below a second predetermined level. The invention further includes a method for controlling a hybrid vehicle powertrain system.

    摘要翻译: 用于混合动力车辆的电池控制系统包括混合动力总成电池,车辆附件电池和适于对车辆附件电池充电的原动机驱动发电机。 检测装置被配置为监视车辆附件电池的充电状态。 控制器被配置为响应于车辆辅助电池的充电状态低于第一预定水平而激活原动机来驱动发电机并再充电车辆附件电池,或者将电力从混合动力总成电池转移到车辆附件电池 响应于车辆附件电池的充电状态低于第二预定水平。 本发明还包括一种用于控制混合动力车辆动力系统的方法。