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    • 2. 发明授权
    • Knock control system for engine
    • 发动机摇臂控制系统
    • US5101790A
    • 1992-04-07
    • US596300
    • 1990-10-15
    • Yasuhito TakasuMinoru HottaHiroshi Ikeda
    • Yasuhito TakasuMinoru HottaHiroshi Ikeda
    • F02D41/14F02P5/152F02P5/153
    • F02D41/1498F02P5/1523F02D2200/1015Y02T10/46
    • A knock control system which detects a knock occurring in an engine, a knock detector for detecting the occurrence of the knock in accordance with a knock sensor signal produced by the sensor, a first adjuster for adjusting knock control factors so as to suppress the knock on the basis of a detected signal from the knock detector, a converter for converting the knock sensor signal so as to make the frequency distribution of the knock sensor signal equal to an exponential distribution, a standard deviation calculator for calculating the standard deviation of the exponential distribution, and a second adjuster for adjusting knock control factors so that this standard deviation reaches a predetermined value, whereby the standard deviation of the frequency distribution of the knock sensor signal can be easily detected, thus making it possible to reduce the load on the electronic control system and prevent the knock detection precision from being reduced by the characteristic change of the knock sensor, engine.
    • 一种用于检测发动机爆震的爆震控制系统,用于根据由传感器产生的爆震传感器信号检测爆震发生的爆震检测器,用于调节爆震控制因子以抑制爆震的爆震检测器, 来自爆震检测器的检测信号的基础,用于转换爆震传感器信号以使爆震传感器信号的频率分布等于指数分布的转换器;用于计算指数分布的标准偏差的标准偏差计算器 以及用于调整爆震控制因子的第二调节器,使得该标准偏差达到预定值,从而可以容易地检测爆震传感器信号的频率分布的标准偏差,从而可以减少电子控制 系统,防止爆震检测精度受到特性变化的影响 爆震传感器,发动机。
    • 4. 发明授权
    • Apparatus for detecting misfire in internal combustion engines for
vehicles
    • 用于检测车辆内燃机失火的装置
    • US5263453A
    • 1993-11-23
    • US785321
    • 1991-10-31
    • Keiji WakaharaKouichi ShimizuMinoru Hotta
    • Keiji WakaharaKouichi ShimizuMinoru Hotta
    • G01M15/11F02D35/00
    • G01M15/11
    • An apparatus for detecting a misfire in an internal combustion engine for a vehicle includes a rotational speed change quantity computing unit which detects a rotational speed of the engine and computes a change quantity of the rotational speed of the engine, a misfire determination value correction coefficient setting unit which detects a load on the engine and sets a correction coefficient of a misfire determination value based on a result of detection of the engine load, a misfire determination value setting unit for setting a misfire determination value based on the set misfire determination value correction coefficient, and a misfire determining unit for determining whether a misfire has occurred in the engine by comparing the change quantity of the rotational speed of the engine from the rotational speed change quantity computing unit with the misfire determination value from the misfire determination value setting unit. The misfire detecting apparatus further includes a misfire detection result invalidating unit for invalidating a result of misfire determination by the misfire determining unit.
    • 用于检测车辆用内燃机中的失火的装置包括转速变化量计算单元,其检测发动机的转速并计算发动机的转速的变化量,失火判定值校正系数设定 单元,其检测发动机上的负载,并且基于发动机负载的检测结果设定失火判定值的校正系数;基于所设定的失火判定值校正系数设定失火判定值的失火判定值设定单元 以及失火判定单元,用于通过将来自转速变化量计算单元的发动机的转速的变化量与来自失火判定值设定单元的失火判定值进行比较来判定发动机是否发生了失火。 失火检测装置还包括使失火判定单元的失火判定结果无效的失火检测结果无效化单元。
    • 7. 发明授权
    • Exhaust gas recirculation system
    • 废气再循环系统
    • US5653212A
    • 1997-08-05
    • US561911
    • 1995-11-22
    • Minoru HottaYoshinori MaegawaMasahiko Tajima
    • Minoru HottaYoshinori MaegawaMasahiko Tajima
    • F02D21/08F02M25/07F02M23/04
    • F02D41/0055F02M26/49F02M26/57F02D41/18Y02T10/47
    • An open/close means M1 opens or closes an EGR passage. An engine load detecting means M2 detects an engine load, such as an intake air amount or an intake air pressure. Either an open. condition or a closed condition of the open/close means M1 is specified as a referential state, while the other is specified as a non-referential state. A memory means M3 memorizes engine loads at the referential state and the non-referential state. A constant acceleration judging means M4 makes a judgement as to whether or not the operational condition of the engine is in a constant accelerating condition. An open/close control means M5 switches the open/close means M1 from the referential state to the non-referential state in response to a constant accelerating condition detected by the constant acceleration judging means M4. An estimating means M8 calculates an estimated engine load to be measured if the open/close means M1 is maintained at the referential state under the continuous constant accelerating condition at the time an actual engine load is detected in the non-referential state, based on a plurality of detection values of the engine load values memorized in the referential state. An abnormality judging means M7 compares the estimated engine load calculated by the estimating means M6 with the actual engine load detected in the non-referential state, thereby making a judgement as to whether the exhaust gas recirculating operation is normal or abnormal.
    • 打开/关闭装置M1打开或关闭EGR通道。 发动机负荷检测装置M2检测诸如进气量或进气压力的发动机负荷。 一个开放 指定开启/关闭装置M1的状态或关闭状态作为参考状态,而另一个被指定为非参考状态。 存储装置M3以引用状态和非参考状态存储发动机负载。 恒定加速判定装置M4判断发动机的运转状态是否处于恒定的加速状态。 开/关控制装置M5响应于由恒定加速判断装置M4检测到的恒定的加速条件,将打开/关闭装置M1从参考状态切换到非参考状态。 估计装置M8基于在非参考状态下检测到实际的发动机负载时,在连续恒定加速条件下保持打开/关闭装置M1的参考状态时,计算要测量的估计发动机负荷 存储在参考状态的发动机负载值的多个检测值。 异常判定机构M7将由推定机构M6算出的推定发动机负荷与在非参照状态下检测出的实际发动机负荷进行比较,判断废气再循环动作是否正常。