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    • 5. 发明申请
    • MISFIRE DETECTING METHOD
    • MISFIRE检测方法
    • WO1993025809A1
    • 1993-12-23
    • PCT/JP1993000764
    • 1993-06-08
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAMATSUMOTO, TakuyaHASHIMOTO, ToruNAMIKI, KoichiYOSHIDA, YasuhisaKASAI, Satoshi
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    • F02D45/00
    • G01M15/11F02D2200/702G01L19/147
    • A misfire detecting method wherein, when a judgement that an internal combustion engine is operated in a special condition in which a load on the internal combustion engine suddenly varies is made, the detection of misfire is prohibited, to prevent the occurrence of erroneous detection. When a judgement that the current time is immediately after an engine has been started is made (S3), or when a judgement that the current time is immediately after an ignition key has been turned off is made (S4), or when a judgement that a deceleration operation of the engine, a speed changing operation of a transmission or the rough load running of a vehicle is carried out is made (S5-S7), a processor repeatedly performing misfire detecting processes aborts a misfire detecting process in the present cycle immediately to avoid the occurrence of erroneous detection which is liable to happen when the vehicle runs on a rough road and so on.
    • 一种失火检测方法,其特征在于,在内燃机的负荷急剧变化的特殊状态下进行内燃机的动作判断时,禁止检测失火,防止发生错误检测。 进行发动机起动后的当前时刻的判断(S3),或者当判定当前时间紧接点火钥匙关闭后(S4),或者当判断为 进行发动机的减速操作,变速器的变速操作或车辆的粗加载行驶(S5-S7),重复执行失火检测处理的处理器立即中止当前循环中的失火检测处理 以避免当车辆在粗糙的道路等上行驶时容易发生的错误检测的发生。
    • 7. 发明申请
    • FAILURE DIAGNOSTIC DEVICE FOR AN EVAPORATIVE EMISSION CONTROL SYSTEM
    • 用于蒸发排放控制系统的故障诊断装置
    • WO1996010691A1
    • 1996-04-11
    • PCT/JP1995001972
    • 1995-09-28
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAMATSUMOTO, TakuyaHASHIMOTO, ToruMIYAKE, MitsuhiroKAMURA, HitoshiYOSHIDA, Yasuhisa
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    • F02M25/08
    • F02M25/0809
    • When a failure diagnostic device for diagnosing failure of an evaporative emission control system judges that an engine (1) is being run in a running state that satisfies failure diagnosis requiring conditions, it drives a purge control valve (46) so as to open it after detecting an opening position of an idle speed control (ISC) valve (8). If a relatively large load is being applied to said engine at that moment, a threshold value for determining the operation sensitivity of said ISC valve is corrected to be reduced. When a predetermined period of time elapses after a valve opening position of said ISC valve was detected, an opening position of said ISC valve is again detected. When a deviation between the two opening positions is below said threshold value, it is judged that the introduction of purged air by driving said purge control valve is not performed, in other words, that said purge control valve is out of order. When the engine load is increased, since the operation sensitivity of said ISC valve is increased, an erroneous diagnosis is prevented.
    • 当用于诊断蒸发排放控制系统的故障的故障诊断装置判断发动机(1)在满足故障诊断要求条件的运行状态下运行时,驱动排气控制阀(46),以便在 检测怠速控制(ISC)阀(8)的打开位置。 如果在该时刻对所述发动机施加相当大的负荷,则校正用于确定所述ISC阀的操作灵敏度的阈值以减小。 当检测到所述ISC阀的阀打开位置之后经过预定时间段时,再次检测到所述ISC阀的打开位置。 当两个打开位置之间的偏差低于所述阈值时,判断未执行通过驱动所述清洗控制阀引入吹扫空气,换句话说,所述清洗控制阀故障。 当发动机负载增加时,由于所述ISC阀的操作灵敏度增加,所以防止错误的诊断。
    • 8. 发明申请
    • METHOD OF DETECTING MISFIRE BY UTILIZING VARIATION OF ROTATION OF CRANKSHAFT
    • 通过利用曲轴转动变化检测错误的方法
    • WO1993025811A1
    • 1993-12-23
    • PCT/JP1993000766
    • 1993-06-08
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAMATSUMOTO, TakuyaHASHIMOTO, ToruMIYAKE, MitsuhiroYOSHIDA, YasuhisaYANAGISAWA, MitsuhikoNAKAJIMA, HiroyukiNAMIKI, Koichi
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    • F02D45/00
    • G01M15/11F02D41/1498F02D2200/1015
    • A misfire detecting method capable of detecting the occurrence of misfire accurately without involving a misfire detection error ascribable to the vibratory increase and decrease, which occurs after misfire has happened, of the variation rate of rotation of a crankshaft, and, moreover, requiring no special hardware for this purpose. The angular accelerations D omega n-2, D omega n-1, D omega n and D omega n+1 in the crank angle regions corresponding to the preceding cylinder, two cylinders to be subjected to the detection of misfire and the succeding cylinder are calculated sequentially by a processor to which pulse outputs are inputted from a crank angle sensor. When the values D omega n-1 and D omega n decrease considerably as compared with values D omega n-2 and D omega n-1, a tentative judgement that misfire occurs in the two object cylinders to be detected is made. When the value D omega n+1 then increases appreciably as compared with the value D omega n, the restoration to normal combustion condition is ascertained, and the occurrence of misfire in these two object cylinders to be detected is definitely determined.
    • 一种能够准确地检测失火发生的失火检测方法,不涉及归因于发生在失火发生后的振动增减的失火检测误差的曲轴的变动率,而且不需要特殊的 硬件为此目的 在对应于前一个气缸的曲柄角区域中的角加速度Dωn-2,D omega n-1,D omega n和D omega n + 1,要进行检测失火的两个气缸和停止的气缸 由从曲柄角传感器输入的脉冲输出的处理器依次计算。 当值D omega n-1和D omega n与值Dωn-2和Dωn-1相比显着降低时,进行在待检测的两个物体气缸中发生失火的暂时判断。 当值D omega n + 1与值D omega n相比明显增加时,确定恢复到正常燃烧状态,并且确定要检测的这两个物体气缸中发生失火。
    • 9. 发明申请
    • FAIL-SAFE DEVICE FOR A TEMPERATURE SENSOR
    • 用于温度传感器的失效安全装置
    • WO1990001631A1
    • 1990-02-22
    • PCT/JP1989000778
    • 1989-07-28
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHAHASHIMOTO, ToruCHINO, MasashiTAKAHASHI, Akira
    • MITSUBISHI JIDOSHA KOGYO KABUSHIKI KAISHA
    • F02D45/00
    • F02D41/222F01P11/16Y02T10/40
    • In an apparatus equipped with an engine controller which controls the engine based on an output from a temperature sensor that detects the coolant temperature of the engine, the improvement which comprises a temperature sensor output monitor means which monitors the output of said temperature sensor when the engine is in operation, a temperature sensor fail determining means which determines said temperature sensor to be in failure when said temperature sensor output monitor means has not detected a change in the output that corresponds to the temperature rise of the temperature sensor output for a predetermined period of time while the temperature sensor is producing a signal that corresponds to the coolang temperature with the engine in operation, and a pseudo signal output means which produces a pseudo signal corresponding to a predetermined temperature to said engine controller instead of sending an output signal from the temperature sensor when the temperature sensor is determined to be in failure by the temperature sensor fail determining means, wherein abnormal condition in the temperature sensor due to increase in the resistance is detected to fix the output of the temperature sensor other than the short-circuit or breakage in the circuit, in addition to controlling the engine under the ordinary condition of temperature sensor, the engine is controlled reliably, the number of revolutions of the engine is fixed to a desired number of revolutions when the idling speed is being controlled, the enrichment is suppressed in controlling the fuel, and the angle advancement in the ignition timing is suppressed in controlling the ignition.
    • 在装备有基于检测发动机的冷却剂温度的温度传感器的输出来控制发动机的发动机控制器的装置中,包括温度传感器输出监视装置的改进,该温度传感器输出监视装置在发动机时监视所述温度传感器的输出 当温度传感器输出监视装置在预定时间段内没有检测到与温度传感器输出的温度上升相对应的输出的变化时,确定所述温度传感器处于故障状态的温度传感器故障确定装置 当温度传感器产生与发动机运转中的冷却液温度相对应的信号时,以及伪信号输出装置,其产生对应于预定温度的伪信号给所述发动机控制器,而不是从温度发送输出信号 确定温度传感器时的传感器 由温度传感器故障判定装置发生故障,其中检测到由于电阻增加导致的温度传感器中的异常状况,除了电路中的短路或断线以外固定温度传感器的输出,除了 在温度传感器的普通条件下控制发动机,发动机被可靠地控制,当控制怠速时,发动机的转数被固定到所需的转数,控制燃料时的浓缩被抑制,以及 在控制点火时抑制点火正时的角度提前。