System and method for controlling valve timing of continuous variable valve duration engine

    公开(公告)号:US10415488B2

    公开(公告)日:2019-09-17

    申请号:US15840079

    申请日:2017-12-13

    Abstract: A method for controlling intake and exhaust valves of an engine includes: controlling, by an intake continuous variable valve timing (CVVT) device, opening and closing timings of the intake valve; controlling, by an exhaust CVVT device, opening and closing timing of the exhaust valve; determining, by a controller, first to fifth control regions based on engine load and speeds, and a target opening duration of the intake valve and target opening or target closing timings of the intake valve; modifying, by an intake continuous variable valve duration (CVVD) device, current opening and closing timings of the intake valve based on the target opening duration; and advancing or retarding, by the intake CVVD device, the current opening timing of the intake valve while simultaneously retarding or advancing the current closing timing of the intake valve by a predetermined value based on the target opening duration of the intake valve.

    System and method for controlling valve timing of continuous variable valve duration engine

    公开(公告)号:US10145312B2

    公开(公告)日:2018-12-04

    申请号:US15340742

    申请日:2016-11-01

    Abstract: The present disclosure provides a system and a method for controlling valve timing of a continuous variable valve duration engine. The method may include: classifying a plurality of control regions depending on an engine speed and an engine load; applying a maximum duration to an intake valve in a first control region; maintaining the maximum duration of the intake valve and controlling a valve overlap by using exhaust valve closing (EVC) timing in a second control region; advancing intake valve closing (IVC) timing in a third control region; controlling the IVC timing to be close to bottom dead center (BDC) in a fourth control region; controlling a throttle valve to be fully opened and generating a scavenging phenomenon in a fifth control region; and controlling the throttle valve to be fully opened and controlling the IVC timing to prevent knocking in a sixth control region.

    System and method for controlling valve timing of continuous variable valve duration engine

    公开(公告)号:US10072588B2

    公开(公告)日:2018-09-11

    申请号:US15340742

    申请日:2016-11-01

    Abstract: The present disclosure provides a system and a method for controlling valve timing of a continuous variable valve duration engine. The method may include: classifying a plurality of control regions depending on an engine speed and an engine load; applying a maximum duration to an intake valve in a first control region; maintaining the maximum duration of the intake valve and controlling a valve overlap by using exhaust valve closing (EVC) timing in a second control region; advancing intake valve closing (IVC) timing in a third control region; controlling the IVC timing to be close to bottom dead center (BDC) in a fourth control region; controlling a throttle valve to be fully opened and generating a scavenging phenomenon in a fifth control region; and controlling the throttle valve to be fully opened and controlling the IVC timing to prevent knocking in a sixth control region.

    Control method for exhaust gas recirculation of hybrid electric vehicle
    19.
    发明授权
    Control method for exhaust gas recirculation of hybrid electric vehicle 有权
    混合动力汽车排气再循环控制方法

    公开(公告)号:US09528457B2

    公开(公告)日:2016-12-27

    申请号:US14853536

    申请日:2015-09-14

    Abstract: A control method for exhaust gas recirculation of a hybrid electric vehicle includes detecting a pressure of an intake manifold. A difference between the pressure of the intake manifold and atmospheric pressure is determined. A load of an engine, which generates torque by combusting a fuel and external air supplied through the intake manifold, is determined. An opening rate of an exhaust gas recirculation valve is controlled to be a first value according to a rotational speed of the engine when the difference is smaller than or equal to a reference pressure and the load of the engine is smaller than or equal to a reference load.

    Abstract translation: 混合电动车辆的废气再循环的控制方法包括检测进气歧管的压力。 确定进气歧管的压力和大气压力之间的差。 确定通过燃烧燃料和通过进气歧管供应的外部空气产生扭矩的发动机负载。 当该差小于或等于参考压力并且发动机的负载小于或等于参考值时,排气再循环阀的打开速率被控制为根据发动机转速的第一值 加载。

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