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    • 21. 发明公开
    • 가변 밸브리프트 엔진의 실화 감지 방법
    • 可变阀门起动机故障检测方法
    • KR1020130024080A
    • 2013-03-08
    • KR1020110087313
    • 2011-08-30
    • 현대자동차주식회사
    • 서유진
    • F02D41/14F02D13/02F02D45/00
    • Y02T10/18F02D13/0207F02D2200/1015G01M15/11
    • PURPOSE: A variable valve lift engine misfire detection method is provided to prevent the detection error and the non-detection of a misfire in which the torque deviation within cylinders exists even in a normal operation state, by reflecting the changes of torque for each cylinder in the misfiring criteria. CONSTITUTION: A variable valve lift engine misfire detection method comprises a step of calculating an air-fuel ration and the compensated quantity of fuel by learning the air-fuel ratio of each cylinder by using the cylinder balancing logic, a step of calculating the valve lift deviation by putting the calculated air-fuel ratio and the compensated quantity of fuel in the valve lift deviation learning logic, a step of calculating a segment time for each torque based on the calculated torque deviation and a step of reflecting the segment time in a misfire detection criterion. The step of calculating the segment time is performed by mapping a torque deviation and a segment time conversion factor. The step of calculating the torque deviation is performed by mapping a valve lift and a torque deviation conversion factor based on each drive mode. The drive mode is classified by revolutions per minute(RPM), an engine load or a valve lift. [Reference numerals] (AA) Misfiring detection criteria
    • 目的:提供可变气门升程发动机失火检测方法,通过反映每个气缸的扭矩变化,防止检测误差和不检测气缸内扭矩偏差的失火状态 失火的标准。 构成:可变气门升程发动机失火检测方法包括通过使用气缸平衡逻辑学习每个气缸的空燃比来计算空燃比和补偿量的步骤,计算气门升程的步骤 通过将计算出的空燃比和补偿量的燃料量计算在气门升程偏差学习逻辑中的偏差,基于计算出的转矩偏差来计算每个转矩的段时间的步骤和在失火中反映段时间的步骤 检测标准。 通过映射扭矩偏差和段时间转换因子来执行计算段时间的步骤。 计算扭矩偏差的步骤通过基于每个驱动模式映射阀升程和转矩偏差转换系数来执行。 驱动模式按照每分钟转数(RPM),发动机负载或气门​​升程进行分类。 (附图标记)(AA)点火检测标准
    • 23. 发明公开
    • 엔진
    • 发动机
    • KR1020100023889A
    • 2010-03-04
    • KR1020097026841
    • 2008-07-25
    • 얀마 가부시키가이샤
    • 아다치,히토시오카다,슈스케오타니,토모히로
    • F02D45/00F02D41/22F02D41/04F02D13/02
    • F02D41/1498F02D41/0085F02D41/0087F02D41/221F02D2200/1015G01M15/11
    • In an engine which may show a behavior where an engine speed is not always minimized after compression top dead center of a cylinder in which poor fuel injection occurred, the cylinder in which poor fuel injection occurred is detected. A common rail diesel engine (1) includes a individual reference number-of-revolutions output unit (30) for outputting the individual reference number of revolutions Nstdi of each cylinder corresponding to each injector (3) incident to fuel injection thereof, an engine speed sensor (6) for calculating the individual actual number of revolutions Ni of each cylinder corresponding to each injector (3) incident to fuel injection thereof, and fuel injection failure detection means for judging a cylinder temporarily judged as poor fuel injection as a cylinder of poor fuel injection when the plus and minus by a contrast arithmetic operation unit (80) coincide entirely in each cylinder and the absolute value|Ni'|of the difference in number of revolutions at the time of forced stop means is entirely above the absolute value|Ni|of the difference in the number of revolutions at the time of temporary judgment means.
    • 在可能显示发动机转速并不总是最小化的气缸的发动机中,其中发生不良燃料喷射的气缸的压缩上止点之后,检测出发生不良燃料喷射的气缸。 共轨柴油发动机(1)包括单独的参考转数输出单元(30),用于输出对应于其入射到其燃料喷射的每个喷射器(3)的每个气缸的各个参考转数Nstdi,发动机转速 传感器(6),用于计算与其燃料喷射入射的每个喷射器(3)相对应的每个气缸的实际实际转数Ni;以及燃料喷射故障检测装置,用于判断暂时判断为差的燃料喷射的气缸为不良气缸 通过对比度运算单元(80)的正负相对于每个气缸完全重合,并且强制停止装置时的转数差的绝对值| Ni'|完全高于绝对值| Ni |在临时判断手段时的转数差。
    • 25. 发明公开
    • 내연 기관의 실화 검출 장치
    • 内燃机故障检测装置
    • KR1020080010423A
    • 2008-01-30
    • KR1020077026827
    • 2006-04-19
    • 도요타지도샤가부시키가이샤
    • 가따야마아끼히로
    • F02D45/00F02D35/00
    • G01M15/11F02D2200/1015
    • A misfire detection device for an internal combustion engine having a flywheel damper. An operation region where misfire detection is affected by the flywheel damper is set in advance, the misfire detection device determines whether operating conditions of the internal combustion engine is within "regions (region A, region B) where the operating conditions are affected by the flywheel damper" (Step ST3), and when it is determined that the conditions are within the "regions where the operating conditions are affected by the flywheel damper," for example, cylinder specifying processing for specifying a cylinder having a misfire is stopped (Step ST4). By such processing as above, a detection failure caused by rotational variation and fluctuating behavior by the flywheel damper can be eliminated, and as a result, misfire detection performance can be improved.
    • 一种具有飞轮阻尼器的内燃机失火检测装置。 预先设定失火检测受飞轮阻尼器影响的操作区域,失火检测装置判定内燃机的运转状态是否在运行条件受飞轮影响的区域(区域A,区域B)内 阻尼器“(步骤ST3),并且当确定条件在”运行条件受飞轮阻尼器影响的区域“内时,例如,停止用于指定失火的气缸的气缸指定处理(步骤ST4 )。 通过这样的处理,可以消除由旋转变化引起的检测故障,并且可以消除由飞轮阻尼器引起的波动行为,结果,可以提高失火检测性能。