专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US5808186A Method for detecting misfire by fluctuation in crankshaft rotation 失效
标题翻译：通过曲轴旋转波动检测失火的方法
公开(公告)号：US5808186A
公开(公告)日：1998-09-15
申请号：US142481
申请日：1994-02-02
申请人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Yasuhisa Yoshida , Mitsuhiko Yanagisawa , Hiroyuki Nakajima , Koichi Namiki , Satoshi Kasai
发明人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Yasuhisa Yoshida , Mitsuhiko Yanagisawa , Hiroyuki Nakajima , Koichi Namiki , Satoshi Kasai
IPC分类号： F02D41/14 , F02D41/22 , F02D41/34 , G01M15/11 , G01M15/00
CPC分类号： F02D41/22 , F02D41/1498 , F02D41/222 , G01M15/11 , F02D2200/1015 , F02D2200/702 , F02D41/0097
摘要： A method for detecting a misfire by fluctuation in crankshaft rotation in which the occurrence of a misfire can be detected exactly by eliminating the effect of detection error in detecting the fluctuation in crankshaft rotation, caused by the error in the construction of a crank angle sensor. By succeedingly receiving pulses from the crank angle sensor, a processor detects a time interval taken from the entering into a crankshaft rotation angle region, relating to a cylinder corresponding to both pulses, to the leaving therefrom (S2), calculates the crankshaft angular acceleration D.omega..sub.n by using the correction factor calculated on the basis of the above detected time interval, and the time interval determined by dividing the time taken for one rotation of the crankshaft by the number of cylinders (S3, S4), the latter interval being free from sensor error, and detects the occurrence of a misfire when the calculated value D.omega..sub.n is less than the decision value (S5 through S7).
摘要翻译： PCT No.PCT / JP93 / 00765 Sec。 371日期：1994年2月2日 102（e）日期1994年2月2日PCT提交1993年6月8日PCT公布。出版物WO93 / 25810 日期：1993年12月23日一种用于通过消除检测误差对检测曲轴旋转的波动的影响，可以精确地检测发生失火的曲轴旋转发生的失火的方法，曲柄角传感器通过从曲轴转角传感器继续接收脉冲，处理器检测从进入到与两个脉冲对应的气缸的曲轴旋转角度区域进入曲轴旋转角度区域的时间间隔（S2），计算曲轴角加速度D 通过使用基于上述检测到的时间间隔计算的校正因子和通过将曲轴的一次旋转所花费的时间除以气缸数（S3，S4）确定的时间间隔，后一个间隔是空闲的并且当计算值Dωn小于判定值时，检测发生失火（S5至S7）。

2. 发明授权

US5506778A Misfire detection method based on a change in crankshaft rotation 失效
标题翻译：基于曲轴旋转变化的失火检测方法
公开(公告)号：US5506778A
公开(公告)日：1996-04-09
申请号：US157160
申请日：1994-02-03
申请人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Yasuhisa Yoshida , Mitsuhiko Yanagisawa , Hiroyuki Nakajima , Koichi Namiki
发明人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Yasuhisa Yoshida , Mitsuhiko Yanagisawa , Hiroyuki Nakajima , Koichi Namiki
IPC分类号： F02D41/14 , G01M15/11 , F01L25/00
CPC分类号： G01M15/11 , F02D41/1498 , F02D2200/1015
摘要： A misfire detection method is provided, which method makes it possible to accurately detect the occurrence/absence of misfire by eliminating a detection error in misfire detection. This error is caused by a vibrational increase or decrease of the rotational changing rate of a crankshaft after a misfire state occurs. A processor, which receives pulse outputs from a crank angle sensor, calculates in sequence angular accelerations D.omega..sub.n-2, D.omega..sub.n-1, D.omega..sub.n, and D.omega..sub.n+1 in crank angle areas which correspond to a preceding cylinder, two cylinders checked for misfire, and a succeeding cylinder, respectively. If the values D.omega..sub.n-1 and D.omega..sub.n n significantly decrease in comparison with the values D.omega..sub.n-2 and D.omega..sub.n-1, respectively, then it is tentatively determined that misfire has occurred in both cylinders checked. Then If the value D.omega..sub.n+1 significantly increases compared to the value D.omega..sub.n, then the restoration to the normal combustion state is confirmed, and the occurrence of misfire in the two cylinders checked is definitely determined.
摘要翻译： PCT No.PCT / JP93 / 00766 Sec。 371日期：1994年2月3日 102（e）1994年2月3日PCT PCT 1993年6月8日PCT公布。出版物WO93 / 25811 PCT 日期：1993年12月23日。提供了一种失火检测方法，该方法使得能够通过消除失火检测中的检测误差来准确地检测失火的发生/不存在。该误差是由发生失火状态后曲轴的旋转变化率的振动增加或减小引起的。接收来自曲柄角传感器的脉冲输出的处理器根据先前的圆柱体的曲轴角度区域中的角加速度D omega n-2，D omega n-1，D omega n和D omega n + ，两个气瓶分别检查失火，和一个后续的气缸。如果值D omega n-1和D omega n n分别与值Dωn-2和Dωn-1相比显着降低，则暂时确定在检查的两个气缸中都发生失火。那么如果值D omega n + 1与值D omega n相比显着增加，则确认到正常燃烧状态的恢复，并且确定了检查的两个气缸中失火的发生。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式