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公开(公告)号：US5582148A
公开(公告)日：1996-12-10
申请号：US379477
申请日：1995-06-01
CPC分类号： F02D31/005 , F02D2011/102 , F02D9/1055
摘要： This invention relates to a control system for the quantity of air to be inducted, which is suitable for use in controlling the idling speed of an engine, for example, for an automotive vehicle or the like. It is an object of the present invention to permit a change of the same degree to the quantity of air to be inducted for the compensation of a load without being affected by the temperature of the engine and also to precisely obtain inducted air in a quantity required inherently. The control system is constructed of STM valve (12) interposed in a bypass passage (11) of a throttle valve (8), ROM (36) for storing opening data for the setting of the position of the STM valve (12), the opening data corresponding to engine operation states, a limiter (13) interposed in the bypass passage (11) in series with the STM valve (12), the opening of the limiter being variable depending on the engine temperature, target opening setting device (45,46) for correcting a target opening on the basis of the engine temperature upon setting the target opening on the basis of the opening data obtained from the ROM (36) in accordance with an engine operation state, and an ISC driver (44) for controlling the opening of the STM valve (12) to the target opening from the target opening setting device (45,46).
摘要翻译： PCT No.PCT / JP94 / 00854 Sec。 371日期：1995年6月1日 102（e）1995年6月1日PCT PCT 1994年5月30日PCT公布。 公开号WO94 / 28295 日期1994年12月8日本发明涉及适用于控制例如机动车辆等的发动机怠速的空气的导入量的控制系统。 本发明的目的是允许在不受发动机温度影响的情况下改变与要被引入的空气量相同的程度，而不受发动机的温度的影响，并且还要精确地获得所需量的引入空气 固有的 控制系统由介于节流阀（8）的旁通通道（11）中的STM阀（12）构成，用于存储用于设定STM阀（12）的位置的开启数据的ROM（36） 对应于发动机运转状态的打开数据，与STM阀（12）串联插入在旁通通路（11）中的限制器（13），限制器的开度根据发动机温度变化，目标开度设定装置 ，46），用于根据根据发动机操作状态从ROM（36）获得的打开数据设定目标开度时基于发动机温度校正目标开度;以及ISC驱动器（44），用于 控制所述STM阀（12）从所述目标开度设定装置（45,46）向所述目标开口的打开。
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公开(公告)号：US5587909A
公开(公告)日：1996-12-24
申请号：US150063
申请日：1993-11-18
CPC分类号： G01M15/11 , G01L19/147 , F02D2200/702
摘要： A misfire detecting method is provided for preventing erroneous detection by prohibiting misfire detection when it is judged that an internal combustion engine is operating in a particular operating condition in which load on the engine can suddenly change, wherein a processor for repeatedly executing a misfire detection process immediately ends the present cycle of the misfire detection process when it is judged that the engine has just been started (S3), when it is judged that the igniton key has just been turned off (S4), or when it is judged that the engine is decelerating, that the transmission is performing a shift operation, or that the vehicle is running on a rough road (S5-7), to thereby avoid erroneous detection which is liable to occur during rough-road travel etc.
摘要翻译： PCT No.PCT / JP93 / 00764 Sec。 371日期：1993年11月18日 102（e）日期1994年1月18日PCT提交1993年6月8日PCT公布。 公开号WO93 / 25809 日期：1993年12月23日提供一种失火检测方法，用于当判断内燃机在发动机的负荷突然变化的特定运行状态下运行时，通过禁止失火检测来防止错误检测，其中，重复处理器 当判断出发动机刚刚起动时，执行失火检测处理立即结束当前的失火检测处理的周期（S3），当判断为点火钥匙刚刚被关闭（S4）时，或当 判断发动机正在减速，变速器正在进行变速操作，或车辆在粗糙的道路上行驶（S5-7），从而避免在粗车行驶期间容易发生的错误检测。
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公开(公告)号：US5423203A
公开(公告)日：1995-06-13
申请号：US92527
申请日：1993-07-16
IPC分类号： F02D41/14 , F02D45/00 , G01N27/26 , G01N27/409 , G01M19/00
CPC分类号： F02D41/1495 , F01N2550/00 , F01N2560/025
摘要： A failure determination method for an O.sub.2 sensor is provided wherein the air-fuel ratio of a mixture is maintained at a value which produces a leaner or richer air-fuel ratio than a stoichiometric ratio by a predetermined value, for a predetermined time after an engine starts operating in an idle region, to thereby make the oxygen concentration of exhaust gas surrounding the O.sub.2 sensor uniform. Subsequently, the air-fuel ratio is forcibly subjected to an oscillatory change with a predetermined amplitude of .+-.10 to 15% of the stoichiometric ratio with respect to the stoichiometric ratio at a predetermined frequency of several Hz, to determine abnormality of the O.sub.2 sensor based on the change of the output voltage of the O.sub.2 sensor.
摘要翻译： 提供了一种用于O2传感器的故障判定方法，其中混合物的空燃比在发动机之后的预定时间内保持在比化学计量比更精细或更丰富的空燃比产生预定值的值 开始工作在空闲区域，从而使O2传感器周围的排气的氧气浓度均匀。 随后，相对于以几Hz的预定频率的化学计量比，空燃比被强制地以相对于化学计量比的+/- 10至15％的预定振幅进行振荡变化，以确定O 2的异常 传感器基于O2传感器输出电压的变化。
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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
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。
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5.发明授权Method and apparatus of detecting faults for fuels evaporative emission treatment system 失效燃料蒸发排放处理系统故障检测方法与装置
公开(公告)号：US5445015A
公开(公告)日：1995-08-29
申请号：US80718
申请日：1993-06-24
CPC分类号： F02M25/0809 , F02M2025/0845
摘要： A method and apparatus of detecting faults for a fuel evaporative emission treatment system, in which the fuel evaporative emission which is admitted from a fuel tank and absorbed once by a canister is separated from the canister by purge air and sucked in a suction pipe of an engine. Under the control of an electronic control unit, a vent port of the canister is closed by closing a vent solenoid valve, and a purge control valve installed in a pipe connecting an outlet port of the canister to the suction pipe is opened. Thereby, a negative pressure of suction air is applied to the fuel tank via another pipe connecting the above-mentioned pipe and the inlet port of canister to the fuel tank to reduce the internal pressure of the fuel tank. Then, the reduction of the internal pressure of the fuel tank is completed by closing the control valve. Afterward, the pressure rise generated in the fuel tank from the time when the exhaust is completed is detected on the basis of the output of a pressure sensor. If the degree of pressure rise is high, it is judged that the fuel evaporative emission system has a fault such as poor airtightness.
摘要翻译： 一种用于检测燃料蒸发排放处理系统的故障的方法和装置，其中从燃料箱进入并被罐吸收一次的燃料蒸发排放物通过吹扫空气与罐分离，并被吸入吸入管 发动机。 在电子控制单元的控制下，通过关闭通风电磁阀关闭罐的通气口，并且打开安装在将罐的出口连接到吸入管的管道中的清洗控制阀。 因此，吸入空气的负压通过将上述管道和罐的入口连接到燃料箱的另一管道施加到燃料箱，以降低燃料箱的内部压力。 然后，通过关闭控制阀来完成燃料箱的内部压力的降低。 之后，基于压力传感器的输出来检测从排气完成时在燃料箱中产生的压力上升。 如果压力升高程度高，则认为燃料蒸发排放系统具有气密性差的缺点。
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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
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）。
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公开(公告)号：US5513616A
公开(公告)日：1996-05-07
申请号：US202161
申请日：1994-02-25
CPC分类号： F02D41/0055 , F02M26/49 , F02B1/04 , F02D2200/0406 , F02M26/57 , Y02T10/47
摘要： A method for determining a failure of an exhaust gas recalculation (EGR) apparatus in which a failure of the EGR apparatus is determined by determining whether a difference between an intake manifold pressure developed when an EGR valve is open and that developed when the EGR valve is closed falls within a specified range, the EGR valve being temporarily opened and closed while failure determination is being implemented. The failure determination is aborted so as to prevent erroneous determination, if a variation of the engine speed exceeds a specified value during the failure determination, or if a variation of the opening degree of an idling speed control (ISC) valve, disposed in a bypass passage installed in an intake passage of an engine in a manner bypassing a throttle valve, exceeds a specified value during the failure determination, or if a fuel control mode changes during the failure determination. Alternatively, to prevent erroneous determination, an intake manifold pressure difference is corrected in accordance with a variation of the engine speed or a variation of the ISC valve opening degree during the failure determination, or the ISC valve opening degree is fixed during the failure determination.
摘要翻译： 一种用于确定废气再循环（EGR）装置的故障的方法，其中，通过确定在EGR阀打开时产生的进气歧管压力与EGR阀为开路时所形成的进气歧管压力之间的差异是否确定EGR装置的故障 关闭落在指定范围内，在执行故障确定的同时，EGR阀暂时打开和关闭。 故障确定中止，以防止在故障确定期间发动机转速的变化超过规定值，或者设置在旁路中的空转速度控制（ISC）阀的开度的变化时的错误判定 在故障判定期间，以旁路节气门的方式安装在发动机的进气通路中的通道超过规定值，或者在故障判定期间燃料控制模式发生变化。 或者，为了防止错误判定，根据发动机转速的变化或故障判定时的ISC阀开度的变化，或者在故障判定期间ISC阀开度固定，校正进气歧管压差。
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公开(公告)号：US5452604A
公开(公告)日：1995-09-26
申请号：US190541
申请日：1994-02-02
CPC分类号： G01M15/11
摘要： A misfire detection method based on fluctuation in crankshaft rotation, in which a time interval required for the crankshaft to rotate over an angle region associated with a cylinder checked for misfire is detected in response to pulses supplied from a crank angle sensor having vanes. Next, a deviation of the crankshaft angular acceleration D .omega..sub.n, calculated based on the thus detected time interval and corresponding to the cylinder checked for misfire, from the angular acceleration D .omega..sub.n-3, corresponding to a cylinder belonging to the cylinder group to which the cylinder checked for misfire belongs, is compared with a determination value, and an occurrence/absence of misfire is detected in accordance with a result of the comparison. By using the deviation between the angular acceleration values calculated based on the time intervals detected through the use of the same vane, the bad effect of structural errors of the vanes is canceled, to thereby prevent erroneous misfire detection caused by the vane errors.
摘要翻译： 响应于从具有叶片的曲柄角传感器提供的脉冲，检测基于曲轴旋转波动的失火检测方法，其中曲轴在与检查失火的气缸相关联的角度区域中旋转所需的时间间隔。 接下来，将基于由此检测到的时间间隔计算出的曲轴角加速度D omega n与对应于检查失火的气缸相对应于属于气缸组的气缸的角加速度Dωn-3的偏差相对于 将检查失火的气缸所属的位置与确定值进行比较，并且根据比较结果检测是否发生失火。 通过使用基于通过使用同一叶片检测的时间间隔计算的角加速度值之间的偏差，叶片的结构误差的不良影响被消除，从而防止由叶片误差引起的错误失火检测。
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公开(公告)号：US5983861A
公开(公告)日：1999-11-16
申请号：US49670
申请日：1998-03-27
CPC分类号： F02D11/105
摘要： A throttle valve control device is provided which includes a throttle valve mounted in an intake pipe of an internal combustion engine, an actuator which drives the throttle valve so as to change an opening of the throttle valve, an operating condition sensor which detects operating conditions of the internal combustion engine, an accelerator sensor which detects an accelerator pedal position that represents an amount by which an accelerator pedal is depressed by a driver, and a control unit for controlling the throttle valve. The control unit includes a first setting circuit that sets a first target opening of the throttle valve based on the accelerator pedal position detected by the accelerator sensor, a second setting circuit that sets a second target opening of the throttle valve based on the accelerator pedal position detected by the accelerator sensor, and the operating conditions of the engine detected by the operating condition sensor, and a control circuit that compares the first target opening with the second target opening, and controls the actuator based on the larger one of the first target opening and second target opening.
摘要翻译： 提供了一种节气门控制装置，其包括安装在内燃机的进气管中的节流阀，驱动节流阀以便改变节流阀的开度的致动器，检测操作状态传感器， 内燃机，加速器传感器，其检测表示加速踏板被驾驶员压下的量的加速器踏板位置，以及用于控制节流阀的控制单元。 控制单元包括：第一设定电路，其基于由加速器传感器检测出的加速器踏板位置设定节流阀的第一目标开度;第二设定电路，其基于加速踏板位置设定节气门的第二目标开度 由所述加速器传感器检测到的所述发动机的运转状况以及由所述运转状态传感器检测到的所述发动机的运转状况;以及控制电路，其将所述第一目标开度与所述第二目标开度进行比较，并且基于所述第一目标开度 和第二个目标开放。
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10.发明授权Fault diagnostic method and apparatus for fuel evaporative emission control system 失效燃油蒸发排放控制系统故障诊断方法及装置
公开(公告)号：US5750888A
公开(公告)日：1998-05-12
申请号：US683415
申请日：1996-07-18
CPC分类号： F02M25/0809
摘要： A method and apparatus for detecting faults in a fuel evaporative emission control system, in which the fuel evaporative emission which is admitted from a fuel tank and adsorbed once by a canister is separated from the canister by purge air and sucked into a suction passage of an engine. The fault diagnostic apparatus fluid-tightly closes the fuel tank such that a vacuum is held in the fuel tank, and then detect the presence of a leak in a fuel evaporative emission flow path on the basis of a rate of increase of the pressure in the fuel tank. At the same time, the average value of the pressure in the fuel tank is calculated at regular intervals, and the calculated average value is compared with levels of the pressure in the tank detected within a predetermined period of time, so that the detection of the leak is interrupted depending upon the result of the comparison.
摘要翻译： 一种用于检测燃料蒸发排放控制系统中的故障的方法和装置，其中从燃料箱进入并被罐吸入一次的燃料蒸发排放物通过吹扫空气与罐分离，并被吸入到吸入通道 发动机。 故障诊断装置将燃料箱流体密封，使得在燃料箱中保持真空，然后基于燃料蒸发排放流路中的压力增加率来检测燃料蒸发排放流路中是否存在泄漏 油箱。 同时，以规则的间隔计算燃料箱中的压力的平均值，并将计算的平均值与在预定时间段内检测到的罐中的压力水平进行比较，从而检测 根据比较结果，泄漏中断。
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