Control method using continuous variable valve duration apparatus

    公开(公告)号:US09926858B2

    公开(公告)日:2018-03-27

    申请号:US14954849

    申请日:2015-11-30

    摘要: A control method using a continuous variable valve duration apparatus implements a continuous variable valve duration apparatus which includes a wheel mounted on a camshaft and having a wheel key so as to control duration of an intake valve of an engine, a cam unit having a cam and a cam key, adapted such that the camshaft is inserted thereinto, and being disposed so as to vary relative phase of the cam with respect to the camshaft, an inner bracket connected with the wheel key and the cam key, a slider housing being adapted such that the inner bracket is rotatably inserted thereinto and disposed so as to move vertically with respect to the engine, a controller varying a position of the slider housing so as to adjust rotation center of the inner bracket, and a guide unit guiding motion of the sliding housing. The control method includes calculating a required air amount for maintaining idle rotation speed of the engine by the controller when the engine is an idle state; mapping a supplied air amount in accordance with duration of the intake valve or the exhaust valve by the controller; setting a target valve duration for supplying the required air amount of the engine by the controller; and controlling duration of the intake valve or exhaust valve according to the set target valve duration by the controller.

    POWERTRAIN
    36.
    发明申请
    POWERTRAIN 审中-公开

    公开(公告)号:US20170167309A1

    公开(公告)日:2017-06-15

    申请号:US15282374

    申请日:2016-09-30

    IPC分类号: F01L1/047 F01L1/34

    摘要: The present disclosure provides a powertrain including an engine housing to which a cylinder head and cam carrier are mounted, a camshaft mounted to the cam carrier, first and second cam portions on which cams are formed, in which the camshaft is inserted, of which relative phase angle with respect to the camshaft is variable and disposed corresponding to a first cylinder and second cylinder respectively, first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing in which the first and second inner brackets are rotatably inserted and of which a position with respect to the cam shaft is variable, a lifter control portion controlling the position of the slider housing, a motor assembly engaged with the engine housing and in which a flywheel connected with a crankshaft is rotatably disposed, and a transmission connected with the motor assembly.

    APPARATUS AND METHOD OF CONTROLLING AN ENGINE

    公开(公告)号:US20230203999A1

    公开(公告)日:2023-06-29

    申请号:US17868872

    申请日:2022-07-20

    IPC分类号: F02D41/00 F02D13/02 F02D41/10

    摘要: An apparatus for controlling an engine includes: an engine with a cylinder; a throttle valve to adjust a flow rate of intake air supplied to the cylinder; a supercharger to supply supercharged air to the cylinder; an intake valve to supply intake air by selectively opening and closing the cylinder; a variable valve timing device to adjust opening and closing timings of the intake valve; a variable valve duration device to adjust an opening duration of the intake valve; and a controller to adjust the amount of air inside of the cylinder by fixing an intake valve opening (IVO) timing and adjusting an intake valve closing (IVC) timing through the variable valve timing device and the variable valve duration device from a time at which a demanded torque is input to a time at which the demanded torque is followed by the throttle valve or the supercharger.

    Powertrain
    40.
    发明授权

    公开(公告)号:US10202875B2

    公开(公告)日:2019-02-12

    申请号:US15282374

    申请日:2016-09-30

    摘要: The present disclosure provides a powertrain including an engine housing to which a cylinder head and cam carrier are mounted, a camshaft mounted to the cam carrier, first and second cam portions on which cams are formed, in which the camshaft is inserted, of which relative phase angle with respect to the camshaft is variable and disposed corresponding to a first cylinder and second cylinder respectively, first and second inner brackets transmitting rotation of the camshaft to the first and second cam portions respectively, a slider housing in which the first and second inner brackets are rotatably inserted and of which a position with respect to the cam shaft is variable, a lifter control portion controlling the position of the slider housing, a motor assembly engaged with the engine housing and in which a flywheel connected with a crankshaft is rotatably disposed, and a transmission connected with the motor assembly.