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    • 5. 发明公开
    • 다기통 4사이클 엔진의 실화 판정 장치
    • 多缸四缸发动机故障检测装置
    • KR1020120011805A
    • 2012-02-08
    • KR1020110072781
    • 2011-07-22
    • 아이신세이끼가부시끼가이샤
    • 이시까와가즈히로
    • F02D45/00F02D41/22F02D35/00
    • G01M15/11
    • PURPOSE: A misfire detecting device for a multi-cylinder four-cycle engine is provided to precisely and accurately detect the misfire of an engine. CONSTITUTION: A misfire detecting device for a multi-cylinder four-cycle engine comprises a time calculation unit, a deviation calculation unit, and an integrated value calculation unit, and a determination unit. The time calculation unit calculates time until multiple pulses are counted. The deviation calculation unit calculates a deviation between a first time corresponding to the calculated time and a second time corresponding to time when a current pulse is counted. The integrated value calculation unit calculates an integrated value by integrating the calculated deviation. The determination unit determines whether one cylinder(12) among multiple cylinders is misfired based on the calculated integrated value.
    • 目的:提供一种用于多缸四冲程发动机的失火检测装置,以精确和准确地检测发动机的失火。 构成:用于多气缸四冲程发动机的失火检测装置,包括时间计算单元,偏差计算单元和积分值计算单元,以及确定单元。 时间计算单元计算直到多个脉冲被计数的时间。 偏差计算单元计算对应于计算出的时间的第一时间与对应于当前脉冲被计数的时间的第二时间之间的偏差。 积分值计算单元通过对计算出的偏差进行积分来计算积分值。 确定单元基于所计算的积分值确定多个气缸中的一个气缸(12)是否失火。
    • 7. 发明公开
    • 내연기관의 실화판정장치, 그것을 탑재한 차량 및실화판정방법
    • 内燃机发动机的装置,车辆安装及判罚方法
    • KR1020080078687A
    • 2008-08-27
    • KR1020087015046
    • 2006-12-14
    • 도요타 지도샤(주)
    • 스즈키다카시
    • F02D45/00F02D35/02
    • F02D41/1497F02D2200/1015G01M15/11
    • When the operating state of an engine consisting of the rotating speed (Ne) and the torque (Te) belongs to the resonance region in the post-stage including a damper connected with the crankshaft of the engine, a subtraction sine wave for removing the influence by resonance is calculated (S310), and then misfire is judged (S320, S330) depending on whether the variation DeltaF in rotating speed F(N30) obtained by subtracting the calculated subtraction sine wave from a variation in 30° rotating speed (N30) which is the rotating speed every time when the crankshaft rotates by 30° is smaller than a threshold Fref or not. Consequently, misfire can be judged more certainly and precisely even when the operating state belongs to the resonance region.
    • 当由转速(Ne)和转矩(Te)构成的发动机的运转状态属于包括与发动机的曲轴连接的阻尼器的后级的共振区域时,用于去除影响的减法正弦波 通过计算共振(S310),根据从30°转速(N30)的变化中减去计算出的减法正弦波而得到的转速F(N30)的变化量ΔF,判断失速(S320,S330) 这是每当曲轴旋转30°时的转速小于阈值Fref。 因此,即使当操作状态属于谐振区域时,也可以更准确地和精确地判断失火。
    • 8. 发明公开
    • 내연기관의 실화 판정장치 및 실화 판정방법
    • MISFIRE JUDGING APPARATUS,AND METHOD OF MISFIRE JUDGMENT,FOR INTERNAL COMBUSTION ENGINE
    • KR1020080012365A
    • 2008-02-11
    • KR1020077029498
    • 2006-11-29
    • 도요타 지도샤(주)
    • 아키모토히코카즈니시가키다카히로
    • F02D45/00F02D43/00
    • G01M15/046F02D35/027F02D41/009F02D41/0097F02D41/024F02D41/1498F02D2200/1015G01M15/11
    • In not performing of a catalyst warm-up acceleration control, by comparison between 30° required time (T30), computed as a time required for 30 degrees rotation of crank shaft, and threshold value (Tref1,Tref2), sorting into intermittent misfire and single misfire/continuous misfire groups is carried out to thereby effect misfire judgment (S120 to 150). In performing of a catalyst warm-up acceleration control, by comparison between 30° required time (T30), computed as a time required for 30 degrees rotation of crank shaft (26), and threshold value (Tref3,Tref4), sorting into continuous misfire and single misfire/intermittent misfire groups is carried out to thereby effect misfire judgment (S160 to 190). Consequently, irrespective of whether or not a catalyst warm-up acceleration control is performed, engine misfire can be judged with enhanced accuracy.
    • 在不进行催化剂预热加速控制的情况下,通过将曲轴30度旋转所需的时间计算的30°所需时间(T30)和阈值(Tref1,Tref2)进行比较,分选为间歇性失火, 执行单次失火/连续失火组,从而进行失火判断(S120-150)。 在执行催化剂预热加速控制时,通过将曲轴(26)的30度旋转所需的时间计算的30°所需时间(T30)与阈值(Tref3,Tref4)进行比较,分选成连续 执行失火和单次失火/间歇性失火组,从而进行失火判断(S160〜190)。 因此,无论是否进行催化剂预热加速控制,都能够以更高的精度判断发动机失火。
    • 9. 发明公开
    • 최적 위상 지연각을 이용한 엔진 실화 검출 시스템 및 검출방법
    • 使用最佳相位延迟角检测发动机失误的系统和方法
    • KR1020000066048A
    • 2000-11-15
    • KR1019990012888
    • 1999-04-13
    • 현대자동차주식회사
    • 윤형진
    • F02D45/00
    • G01M15/11
    • PURPOSE: A system and a method for detecting an engine misfire are provided to prevent the wrong detection or non-detection of the engine misfire caused by the rotational number of an engine or a load. CONSTITUTION: A misfire-detection starts and a crank position signal and a reference mark are detected through an engine misfire detection system. Thereafter, an electronic control unit selects the optimum phase delay angle. A period of execution or any of top dead centers is measured. A change rate of the periods is measured and a reference value of misfire detection is established to be compared with the change rate of the periods. Then, misfire is decided by comparing the change rate of the periods so that the misfire detection is completed.
    • 目的:提供一种用于检测发动机失火的系统和方法,以防止由发动机或负载的转数引起的发动机失火的错误检测或不检测。 构成:启动失火检测,并通过发动机失火检测系统检测曲柄位置信号和参考标记。 此后,电子控制单元选择最佳相位延迟角。 测量执行期间或任何上死点。 测量周期的变化率,并建立失火检测的参考值以与周期的变化率进行比较。 然后,通过比较周期的变化率来决定失火,使得失火检测完成。