Apparatus for detecting deterioration of air-fuel ratio sensor
    1.
    发明授权
    Apparatus for detecting deterioration of air-fuel ratio sensor 有权
    用于检测空燃比传感器的劣化的装置

    公开(公告)号:US07285204B2

    公开(公告)日:2007-10-23

    申请号:US10633540

    申请日:2003-08-05

    IPC分类号: G01N27/41

    摘要: In detecting a deterioration of an air-fuel ratio sensor, a sensor output change speed integrated value is calculated when an element temperature of a solid electrolyte is stabilized at a low temperature. Successively, a sensor output change speed integrated value is calculated when the solid electrolyte element is stabilized at a high temperature. Finally, a deviation between the change speed integrated values is calculated. By comparing the deviation amount with a predetermined determinant, presence or absence of the deterioration is determined.

    摘要翻译: 在检测空燃比传感器的劣化时,当固体电解质的元件温度稳定在低温时,计算传感器输出变化速度积分值。 接着,当固体电解质元件稳定在高温时,计算传感器输出变化速度积分值。 最后,计算变化速度积分值之间的偏差。 通过将偏差量与预定的行列式进行比较,确定劣化的存在与否。

    Apparatus and method for diagnosis of vehicular system
    2.
    发明授权
    Apparatus and method for diagnosis of vehicular system 失效
    车辆系统诊断装置及方法

    公开(公告)号:US06915203B2

    公开(公告)日:2005-07-05

    申请号:US10361866

    申请日:2003-02-11

    摘要: An engine control system has a self-diagnosis function of an exhaust system. The self-diagnosis function includes a first mode for detecting a failure or abnormality of the exhaust system as a whole, and a second mode for determining and locating a specific failed component in the exhaust system. The first mode is executed during the engine is operated under a normal condition. Therefore it is possible to detect the failure of the exhaust system without lowering a drive performance or increasing emissions. In case of detecting any failure in the first mode, the second mode is activated in response to a command signal that can be entered via a service tool. In the second mode, the engine is operated in order to determine the failed component. In the second mode, determining the failed component takes priority over keeping the drive performance or reducing emissions.

    摘要翻译: 发动机控制系统具有排气系统的自诊断功能。 自诊断功能包括用于检测整个排气系统的故障或异常的第一模式以及用于确定和定位排气系统中的特定故障部件的第二模式。 发动机在正常状态下运转时执行第一种模式。 因此,可以在不降低驱动性能或增加排放的情况下检测排气系统的故障。 在检测到第一模式中的任何故障的情况下,响应于可通过服务工具输入的命令信号激活第二模式。 在第二模式中,为了确定故障组件而操作发动机。 在第二种模式中,确定故障组件优先于保持驱动器性能或减少排放。

    Fuel vapor handling system
    4.
    发明授权
    Fuel vapor handling system 有权
    燃油蒸气处理系统

    公开(公告)号:US06854452B2

    公开(公告)日:2005-02-15

    申请号:US10273186

    申请日:2002-10-18

    CPC分类号: F02M25/0809 F02D41/042

    摘要: In a fuel vapor handling system of this invention, an ECU performs a leak check to check a leak of fuel vapor in a fuel vapor passage when the engine is at a stop. The ECU functions to detect the quantity of fuel during the engine stop. The ECU detects the quantity of fuel at the time of engine starting. Furthermore, the ECU compares the quantity of fuel measured at the time of engine starting with the quantity of fuel measured at the preceding engine stop, to thereby determine whether a filler cap was opened during the engine stop. When the filler cap was opened during the engine stop, a result of the leak check will be cancelled. When the filler cap was not opened, the result of the leak check will be determined.

    摘要翻译: 在本发明的燃料蒸气处理系统中,当发动机处于停止状态时,ECU执行泄漏检查以检查燃料蒸气通道中的燃料蒸气的泄漏。 ECU用于检测发动机停止时的燃油量。 ECU检测发动机启动时的燃油量。 此外,ECU将发动机起动时测量的燃料量与在前一个发动机停止时测量的燃料量进行比较,从而确定在发动机停止期间是否打开加料盖。 在发动机停止期间打开填料盖时,泄漏检查的结果将被取消。 当填料盖未打开时,将确定泄漏检查的结果。

    Heating control system for gas sensor of engine
    6.
    发明授权
    Heating control system for gas sensor of engine 有权
    发动机气体传感器加热控制系统

    公开(公告)号:US06935101B2

    公开(公告)日:2005-08-30

    申请号:US10631855

    申请日:2003-08-01

    IPC分类号: G01N27/41 G01N27/406 F01N3/00

    CPC分类号: G01N27/4067

    摘要: An electronic control unit of an internal combustion engine performs preheat energization control before activation energization control. In the activation energization control, a gas sensor is energized with electric power capable of heating the gas sensor to activation temperature. In the preheat energization control, the gas sensor is energized with low electric power, which is not enough to heat the gas sensor to the activation temperature. Thus, while there is a possibility that water adheres to a sensor main body of the gas sensor, the sensor main body is prevented from being heated to high temperature. Meanwhile, even if water droplets exist in the sensor main body of the gas sensor, the water is vaporized gradually, while preventing the bumping of the water.

    摘要翻译: 内燃机的电子控制单元在启动通电控制之前进行预热通电控制。 在激活通电控制中,气体传感器通过能够将气体传感器加热至激活温度的电力通电。 在预热通电控制中,气体传感器以低功率供电,这不足以将气体传感器加热到活化温度。 因此,尽管水可能附着在气体传感器的传感器主体上,但是传感器主体被防止被加热到高温。 同时,即使在气体传感器的传感器主体中存在水滴,也可以在防止水的碰撞的同时逐渐蒸发水。

    Leak-check apparatus of fuel-vapor-processing system, fuel-temperature estimation apparatus and fuel-temperature-sensor diagnosis apparatus
    7.
    发明申请
    Leak-check apparatus of fuel-vapor-processing system, fuel-temperature estimation apparatus and fuel-temperature-sensor diagnosis apparatus 有权
    燃料蒸气处理系统的泄漏检查装置,燃料温度估计装置和燃料 - 温度传感器诊断装置

    公开(公告)号:US20050039525A1

    公开(公告)日:2005-02-24

    申请号:US10941903

    申请日:2004-09-16

    IPC分类号: G01M99/00 F02M25/08 G01M19/00

    CPC分类号: F02M25/0809

    摘要: A fuel-vapor-processing system for an engine has a canister for accumulating fuel evaporation gas. The system has a leak-check apparatus for checking a leak on passages. The leak-check apparatus includes a leak-check means for carrying out leak-check processing when the engine if in a stopped state. The leak-check means operates only if a predetermined condition is satisfied. It is thus possible to reduce the number of times the leak-check processing is carried out and, hence, possible to reduce power consumption. For example, only if a relatively small leak is detected when the engine is in a running state, the leak-check processing is carried out in a stopped state to verify existence of such a leak. In the leak-check processing, the temperature of fuel, detected by a sensor or an estimated value, may be taken into consideration.

    摘要翻译: 用于发动机的燃料蒸汽处理系统具有用于积聚燃料蒸发气体的罐。 该系统具有用于检查通道上的泄漏的泄漏检查装置。 泄漏检查装置包括泄漏检查装置,用于当发动机处于停止状态时进行泄漏检查处理。 泄漏检查装置仅在满足预定条件时才起作用。 因此,可以减少进行泄漏检查处理的次数,因此可以减少功耗。 例如,只有当发动机处于运行状态时检测到相对较小的泄漏,则在停止状态下进行泄漏检查处理以验证是否存在这种泄漏。 在泄漏检查处理中,可以考虑由传感器检测到的燃料的温度或估计值。

    Fuel vapor control system with leak check
    8.
    发明授权
    Fuel vapor control system with leak check 有权
    燃油蒸汽控制系统带有泄漏检查

    公开(公告)号:US06832509B2

    公开(公告)日:2004-12-21

    申请号:US10233595

    申请日:2002-09-04

    IPC分类号: G01M1900

    CPC分类号: F02M25/0809 F02M25/0836

    摘要: A fuel vapor control system has a controller that carries out a leak check processing after the engine is stopped. The controller includes a device that intermittently activates the controller itself or a part of the controller to sample an internal pressure of the fuel vapor passage. Then, after a predetermined time, the controller determines that whether the sampled values of the internal pressure indicate a leak or not by evaluating the sampled values. According to the arrangement, since at least a part of the controller is activated intermittently, the consumption of electricity can be reduced. The fuel vapor control system has a canister valve and a purge valve made of normally close type valves in order to reduce the consumption of electricity after the engine is stopped.

    摘要翻译: 燃料蒸气控制系统具有在发动机停止之后执行泄漏检查处理的控制器。 控制器包括间歇地启动控制器本身或控制器的一部分以对燃料蒸汽通道的内部压力进行采样的装置。 然后,在预定时间之后,控制器通过评估采样值来确定内部压力的采样值是否表示泄漏。 根据该结构,由于控制器的至少一部分间歇地被激活,所以可以减少电力的消耗。 燃料蒸汽控制系统具有罐阀和由常闭型阀构成的净化阀,以便在发动机停止后减少电力消耗。

    Leak check for fuel vapor purge system
    9.
    再颁专利
    Leak check for fuel vapor purge system 有权
    泄漏检查燃油蒸气清洗系统

    公开(公告)号:USRE41823E1

    公开(公告)日:2010-10-19

    申请号:US11798919

    申请日:2007-05-17

    IPC分类号: F02M33/02

    摘要: A leak check system executes a leak check processing. In the leak check processing, the system closes a canister valve and a purge valve to close the fuel vapor purge system. Then, the system detects and monitors a pressure in the fuel vapor purge system. During the leak check processing, the system detects a rapid change of the pressure that is caused by a deformation of a wall of a fuel tank. The system cancels or suspends the processing to avoid erroneous detection of the leak. If the leak check is canceled, the system opens the canister valve to open the fuel vapor purge system.

    摘要翻译: 泄漏检查系统执行泄漏检查处理。 在泄漏检查处理中,系统关闭罐阀和净化阀以关闭燃料蒸气吹扫系统。 然后,系统检测并监测燃料蒸气吹扫系统中的压力。 在泄漏检查处理期间,系统检测由燃料箱的壁的变形引起的压力的快速变化。 系统取消或暂停处理以避免错误检测泄漏。 如果泄漏检查被取消,则系统打开罐阀以打开燃料蒸气吹扫系统。

    Fuel vapor control system with leak check
    10.
    再颁专利
    Fuel vapor control system with leak check 有权
    燃油蒸汽控制系统带有泄漏检查

    公开(公告)号:USRE41660E1

    公开(公告)日:2010-09-14

    申请号:US11642022

    申请日:2006-12-20

    IPC分类号: G01M19/00

    CPC分类号: F02M25/0809 F02M25/0836

    摘要: A fuel vapor control system has a controller that carries out a leak check processing after the engine is stopped. The controller includes a device that intermittently activates the controller itself or a part of the controller to sample an internal pressure of the fuel vapor passage. Then, after a predetermined time, the controller determines that whether the sampled values of the internal pressure indicate a leak or not by evaluating the sampled values. According to the arrangement, since at least a part of the controller is activated intermittently, the consumption of electricity can be reduced. The fuel vapor control system has a canister valve and a purge valve made of normally close type valves in order to reduce the consumption of electricity after the engine is stopped.

    摘要翻译: 燃料蒸气控制系统具有在发动机停止之后执行泄漏检查处理的控制器。 控制器包括间歇地启动控制器本身或控制器的一部分以对燃料蒸汽通道的内部压力进行采样的装置。 然后,在预定时间之后,控制器通过评估采样值来确定内部压力的采样值是否表示泄漏。 根据该结构,由于控制器的至少一部分间歇地被激活,所以可以减少电力的消耗。 燃料蒸汽控制系统具有罐阀和由常闭型阀构成的净化阀,以便在发动机停止后减少电力消耗。