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公开(公告)号：US20150143883A1
公开(公告)日：2015-05-28
申请号：US14276794
申请日：2014-05-13
发明人： Seungeun YU , Kihoon Nam , Kyoungchan Han
IPC分类号： G01M15/11
CPC分类号： G01M15/11
摘要： A method and an apparatus for detecting engine misfire has advantages of precisely detecting misfire occurrence when misfire continuously occurs at three or more engine cylinders and detecting an engine cylinder where the misfire occurs. The method may include calculating an angular acceleration factor value on the basis of an engine speed, calculating a variation value of an angular acceleration factor on the basis of the angular acceleration factor value, calculating a threshold point of misfire starting and a threshold point of misfire ending, comparing the variation value of the angular acceleration factor with the threshold point of misfire starting, comparing the variation value of the angular acceleration factor with the threshold point of misfire ending, and detecting a cylinder of the engine where the misfire occurs by the comparison results.
摘要翻译： 用于检测发动机失火的方法和装置具有在三个或更多个发动机气缸连续发生失火并检测发生失火的发动机气缸时精确地检测失火发生的优点。 该方法可以包括基于发动机转速计算角加速因子值，基于角加速因子值计算角加速因子的变化值，计算失火开始的阈值点和失火阈值点 将角加速度因子的变化值与失火开始的阈值点进行比较，将角加速度因子的变化值与失火结束的阈值点进行比较，并且通过比较来检测发动机失火发生的气缸 结果。
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公开(公告)号：US20190353108A1
公开(公告)日：2019-11-21
申请号：US16194128
申请日：2018-11-16
发明人： Kyoungchan HAN , Seungeun YU
摘要： A hybrid vehicle may include an engine; a turbocharger including a turbine disposed in an exhaust line and a compressor; an electric supercharger disposed in the intake line at an upstream portion of the compressor; an exhaust gas post processing apparatus; a low pressure EGR device which includes a low pressure EGR line, a low pressure EGR cooler and a low pressure EGR valve; an intake bypass line which connects the intake line at a downstream portion of the electric supercharger and the intake line at an upstream portion of the electric supercharger; an intake bypass valve disposed in the intake bypass line; a post processing bypass line which connects the intake line between the electric supercharger and the compressor and the exhaust line between the turbine and the exhaust gas post processing apparatus; and a post processing bypass valve disposed in the post processing bypass line.
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公开(公告)号：US20190032596A1
公开(公告)日：2019-01-31
申请号：US15829122
申请日：2017-12-01
发明人： Seungeun YU
IPC分类号： F02F3/24
摘要： A piston and an engine including the same are provided. The piston includes an upper surface that is formed at an upper portion; a bowl that is concavely formed at the upper surface; a plurality of protruding portions that are separated by a predetermined distance along an edge of the bowl; and a central portion that is protruded upward at the center of the bowl.
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