APPARATUS AND METHOD FOR DIAGNOSING FAILURE OF PISTON COOLING JET OF ENGINE
    1.
    发明申请
    APPARATUS AND METHOD FOR DIAGNOSING FAILURE OF PISTON COOLING JET OF ENGINE 审中-公开
    用于诊断发动机活塞冷却喷射器故障的装置和方法

    公开(公告)号:US20160363040A1

    公开(公告)日:2016-12-15

    申请号:US14922859

    申请日:2015-10-26

    Inventor: Seung Bum KIM

    Abstract: An apparatus for diagnosing failure of a piston cooling jet of an engine includes an oil line for a piston cooling jet arranged in a cylinder block in a longitudinal direction, a piston cooling jet mounted at the oil line for the piston cooling jet to inject oil to a piston, a solenoid valve mounted at an inlet of the oil line for the piston cooling jet to selectively allow an injection operation of the piston cooling jet, an oil pressure detecting means mounted at the oil line for the piston cooling jet after the solenoid valve to detect oil pressure, and a control unit configured to receive a detection signal of the oil pressure detecting means and determine whether the solenoid valve is in a failure state.

    Abstract translation: 用于诊断发动机的活塞冷却喷射的故障的装置包括:沿纵向布置在气缸体中的用于活塞冷却喷流的油管,安装在用于活塞冷却喷嘴的油管上的活塞冷却喷嘴以将油喷射到 活塞,安装在用于活塞冷却射流的油管入口处的选择性地允许活塞冷却射流的喷射操作的电磁阀,安装在用于活塞冷却射流的油管上的油压检测装置,在电磁阀 以检测油压,以及控制单元,被配置为接收油压检测装置的检测信号,并确定电磁阀是否处于故障状态。

    METHOD AND SYSTEM FOR DETECTING MALFUNCTION OF FASTENING BOLT IN CVVT
    2.
    发明申请
    METHOD AND SYSTEM FOR DETECTING MALFUNCTION OF FASTENING BOLT IN CVVT 有权
    用于检测CVVT中紧固螺栓的故障的方法和系统

    公开(公告)号:US20160146071A1

    公开(公告)日:2016-05-26

    申请号:US14720689

    申请日:2015-05-22

    Inventor: Seung Bum KIM

    Abstract: A method for detecting malfunction of a fastening bolt in a continuous variable valve timing (CVVT) includes: deciding whether a camshaft position sensor is operating normally; learning the most retarded angle position of the camshaft using the camshaft position sensor; deciding whether the learning of the most retarded angle position of the camshaft is normal; and comparing a PWM duty value used in the learning with a set first reference value when the learning of the most retarded angle position of the camshaft is normal.

    Abstract translation: 一种用于检测连续可变气门正时(CVVT)中的紧固螺栓的故障的方法,包括:确定凸轮轴位置传感器是否正常运行; 使用凸轮轴位置传感器学习凸轮轴的最大延迟角度位置; 决定凸轮轴的最大延迟角位置的学习是否正常; 以及当所述凸轮轴的最大延迟角度位置的学习正常时,将所述学习中使用的PWM占空比值与设定的第一参考值进行比较。

    METHOD FOR CATALYST HEATING CONTROL

    公开(公告)号:US20180030872A1

    公开(公告)日:2018-02-01

    申请号:US15367253

    申请日:2016-12-02

    Inventor: Seung Bum KIM

    Abstract: A method for catalyst heating control for controlling a catalyst heating period of a catalyst heating system in which lambda sensors are each mounted at upstream and downstream sides of a catalyst converter may include determining a temperature of exhaust gas after an engine starts; determining an oxygen storage capacity of a catalyst depending on the determined temperature of the exhaust gas; comparing the determined oxygen storage capacity with a reference value to decide an aging level of the catalyst; and determining times of the catalyst heating period to be different from each other depending on the decided aging level of the catalyst.

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