公开(公告)号：US5474045A

公开(公告)日：1995-12-12

申请号：US266630

申请日：1994-06-28

申请人： Akira Demizu ,  Masakazu Sugai ,  Hitoshi Inoue ,  Ryoji Nishiyama ,  Hideaki Katashiba

发明人： Akira Demizu ,  Masakazu Sugai ,  Hitoshi Inoue ,  Ryoji Nishiyama ,  Hideaki Katashiba

IPC分类号： F02D41/18 ,  F02D35/02 ,  F02D37/02 ,  F02D41/32 ,  F02D41/36 ,  F02D43/00 ,  F02D45/00 ,  F02P5/152 ,  F02P5/153

CPC分类号： F02D35/023 ,  F02D37/02 ,  F02D41/32 ,  F02D2041/286 ,  F02D41/18

摘要： An engine control device comprises: crank angle sensor provided for the cylinders of an engine; cylinder internal pressure sensor for detecting the internal pressures of the cylinders according to the output signals of the crank angle sensor; pressure normalizing unit for normalizing the cylinder internal pressures thus detected, according to the cylinder internal pressure which is obtained when the engine is in standard state; engine speed detector; charge efficiency calculating unit for calculating the charge efficiencies of the cylinders by using the output signals of the pressure normalizing unit and the engine speed detector; operating condition detecting unit for detecting the outputs of the pressure normalizing unit and the engine speed detector as operating conditions, calculation control unit for calculating the air/fuel ratio and the ignition timing of each cylinder according to the operating conditions; and adjusting unit for adjusting the air/fuel ratios and ignition timing of the cylinders according to the output of the calculation control unit, thereby to control the air/fuel ratios and ignition timing of the cylinders with high accuracy.

摘要翻译： 发动机控制装置包括：用于发动机气缸的曲柄角传感器; 气缸内部压力传感器，用于根据曲柄角传感器的输出信号检测气缸的内部压力; 压力归一化单元，用于根据当发动机处于标准状态时获得的气缸内部压力来标准化所检测到的气缸内部压力; 发动机转速检测器; 充电效率计算单元，用于通过使用压力归一化单元和发动机速度检测器的输出信号来计算气缸的充电效率; 操作条件检测单元，用于检测压力归一化单元和发动机速度检测器的输出作为操作条件;计算控制单元，用于根据操作条件计算每个气缸的空燃比和点火正时; 以及调节单元，用于根据计算控制单元的输出调节气缸的空燃比和点火正时，从而高精度地控制气缸的空燃比和点火正时。

公开(公告)号：US5544058A

公开(公告)日：1996-08-06

申请号：US138057

申请日：1993-10-19

申请人： Akira Demizu ,  Yukinobu Nishimura ,  Masakazu Sugai

发明人： Akira Demizu ,  Yukinobu Nishimura ,  Masakazu Sugai

IPC分类号： G01M15/11 ,  G06F19/00 ,  G01L3/26

CPC分类号： G01M15/11

摘要： A microcomputer-based misfire detecting apparatus for a multi-cylinder internal combustion engine. A crank angle sensor is coupled to the engine for detecting first and second predetermined angular intervals set before and after a predetermined reference crank position close to a TDC preceding to combustion stroke in each of the cylinders. An acceleration detector is connected to the output of the crank angle sensor for determining an acceleration based on a time ratio between times taken for a crank shaft to rotate through the first and second predetermined angular intervals, respectively, from the output signal of the crank angle sensor. A misfire occurrence detector is connected to the acceleration detector for detecting misfire occurring in the engine cylinder on the basis of the output signal of the acceleration detector.

摘要翻译： 一种用于多缸内燃机的基于微机的失火检测装置。 曲柄角传感器联接到发动机，用于检测在每个气缸中靠近燃烧冲程之前的TDC的预定参考曲柄位置之前和之后设置的第一和第二预定角度间​​隔。 加速度检测器连接到曲轴转角传感器的输出端，用于根据曲柄轴的旋转角度与第一和第二预定角度间​​隔之间的时间比率，根据曲轴转角的输出信号，确定加速度 传感器。 基于加速度检测器的输出信号将失火发生检测器连接到加速度检测器，用于检测在发动机气缸中发生的失火。

公开(公告)号：US5497328A

公开(公告)日：1996-03-05

申请号：US138058

申请日：1993-10-19

申请人： Masakazu Sugai ,  Akira Demizu

发明人： Masakazu Sugai ,  Akira Demizu

IPC分类号： F02D45/00 ,  F02P17/12 ,  G01M15/11 ,  G06F19/00 ,  F02P5/14 ,  G01L3/26

CPC分类号： G01M15/11

摘要： A misfire detection device for a multi-cylinder internal combustion engine detects levels of angular acceleration .beta. of the crankshaft corresponding to predetermined phase intervals of respective cylinders. Further, the differences .DELTA..beta. between the levels of angular acceleration corresponding to successively ignited cylinders are calculated as the combustion condition parameters corresponding to respective cylinders, and when the absolute variance .DELTA..beta.R of the levels of combustion condition parameter (i.e., difference of acceleration .DELTA..beta.) corresponding to cylinders whose ignition timings are separated by 360 degrees of the crank angle is continuously less than a predetermined judgment level, an occurrence of continuous misfires is detected.

摘要翻译： 用于多缸内燃机的失火检测装置检测对应于各个气缸的预定相位间隔的曲轴的角加速度β的水平。 此外，对应于相继点燃的气缸的角加速度的水平之间的差ΔTATA被计算为对应于各个气缸的燃烧条件参数，并且当燃烧条件参数水平（即，加速度差异）的绝对方差DELTAβR 对应于其点火正时以曲柄角360度分开的气缸的DELTAβ值连续小于预定的判断水平，则检测到连续的失火的发生。