-
1.发明授权
公开(公告)号：US5575267A
公开(公告)日：1996-11-19
申请号：US537293
申请日：1995-09-29
申请人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Hitoshi Kamura , Yasuhisa Yoshida , Hidetsugu Kanao , Toshiro Nomura
发明人： Takuya Matsumoto , Toru Hashimoto , Mitsuhiro Miyake , Hitoshi Kamura , Yasuhisa Yoshida , Hidetsugu Kanao , Toshiro Nomura
CPC分类号： F02D41/221 , F02M25/0809 , Y02T10/40
摘要： A fault diagnosis apparatus for detecting a fault in a fuel evaporative emission suppressing system comprises an electronic control unit. When fault diagnosis execution conditions are fulfilled, the electronic control unit stores an average of integral term values for air-fuel ratio feedback control, operating position of an idling speed control valve, and engine speed, and then actuates a purge control valve of the suppressing system so that the valve opens. In a predetermined time period after the actuation of the purge control valve, the integral term average and the like are stored again. If any changes of the integral term average and other values caused by the actuation of the purge control valve are detected, the suppressing system is concluded to be normal. If no changes are detected, on the other hand, the suppressing system is concluded to be faulty.
摘要翻译： 用于检测燃料蒸发排放抑制系统中的故障的故障诊断装置包括电子控制单元。 当满足故障诊断执行条件时，电子控制单元存储空燃比反馈控制的积分项值，空转速度控制阀的操作位置和发动机转速的平均值，然后启动抑制 系统使阀门打开。 在清除控制阀的致动之后的预定时间段内，再次存储积分项平均值等。 如果检测到由清除控制阀的致动引起的积分项平均值和其他值的任何变化，则抑制系统被认定为正常。 另一方面，如果没有检测到变化，则抑制系统被认定为有故障。
-
公开(公告)号：US5732552A
公开(公告)日：1998-03-31
申请号：US599314
申请日：1996-02-09
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/22 , Y02T10/47
摘要： A deterioration diagnostic apparatus for a three-way catalyst includes an electronic control unit, which obtains a frequency of reversals of the changing direction in which the output of an upstream-side O.sub.2 sensor changes, based on the number of times the output voltage of the O.sub.2 sensor crosses a threshold. Also, the control unit obtains a frequency of reversals of the changing direction in which the output of a downstream-side O.sub.2 sensor changes, based on the number of times the output voltage of the downstream-side O.sub.2 sensor crosses upper and lower reversal reference values which are obtained by adding and subtracting a hysteresis constant to and from an average value of input values of the downstream-side O.sub.2 sensor output voltage. The control unit further obtains the ratio of the reversal frequency of the downstream-side sensor output to the reversal frequency of the upstream-side sensor output, and diagnoses deterioration of the three-way catalyst when the reversal frequency ratio has become greater than a predetermined value.
摘要翻译： 用于三元催化剂的劣化诊断装置包括电子控制单元，其基于上游侧O2传感器的输出改变的次数获得上游侧O2传感器的输出变化的变化方向的反转频率 O2传感器超过阈值。 此外，控制单元根据下游侧O2传感器的输出电压与上下反转基准值相交的次数，得到下游侧O2传感器的输出变化的变化方向的反转频率 其通过向下游侧O2传感器输出电压的输入值的平均值加减去滞后常数而得到。 控制单元还获得下游侧传感器输出的反转频率与上游侧传感器输出的反转频率的比，并且当反转频率比已经变得大于预定频率比时，诊断三元催化剂的劣化 值。
-
3.发明授权Fault diagnosis apparatus for a fuel evaporative emission suppressing apparatus 失效用于燃料蒸发排放抑制装置的故障诊断装置
公开(公告)号：US5754971A
公开(公告)日：1998-05-19
申请号：US599313
申请日：1996-02-09
CPC分类号： F02M25/0809 , F02D41/0032
摘要： A fault diagnosis apparatus for a fuel evaporative emission suppressing system has an electronic control unit which inputs an average value of integral terms for air-fuel ratio feedback control, engine speed, etc. when diagnosis executing conditions are satisfied, and then starts opening operation of a purge control valve. Subsequently, the average value of integral terms, engine speed, etc. are input again. If no substantial change occurs in the average value, etc. with driving of the purge control valve, it is concluded that purge air for fault diagnosis has not been introduced, and that the suppressing system is faulty. In driving the purge control valve, its driving duty ratio is increased by a relatively small increment till the driving duty ratio reaches a predetermined duty ratio. If the system is normal, therefore, a purge-air introduction amount for fault diagnosis is increased by a relatively small increasing degree, to thereby prevent fluctuation of the air-fuel ratio or engine output torque attributable to the purge air introduction. After the driving duty ratio has reached the predetermined duty ratio, the driving duty ratio is increased by a relatively large increment, to thereby rapidly execute the purge-air introduction and fault diagnosis.
摘要翻译： 燃料蒸发排放抑制系统的故障诊断装置具有电子控制单元，当满足诊断执行条件时，输入空燃比反馈控制，发动机转速等的积分项的平均值，然后开始打开操作 清洗控制阀。 随后，再次输入积分项，发动机转速等的平均值。 如果在清洗控制阀的驱动下，平均值等没有发生实质性变化，则认为没有引入用于故障诊断的吹扫空气，并且抑制系统有故障。 在驱动排气控制阀时，其驱动占空比增加相对较小的增量，直到驱动占空比达到预定的占空比。 因此，如果系统正常，则用于故障诊断的吹扫空气引入量增加相对较小的增加程度，从而防止归因于吹扫空气引入的空燃比或发动机输出转矩的波动。 在驱动占空比达到预定占空比之后，驱动占空比增加相对较大的增量，从而快速地执行吹扫空气引入和故障诊断。
-
4.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。
-
5.发明授权
公开(公告)号：US6073610A
公开(公告)日：2000-06-13
申请号：US70096
申请日：1998-04-27
IPC分类号： F02B17/00 , F02D9/02 , F02D11/10 , F02D29/02 , F02D31/00 , F02D41/04 , F02D41/22 , F02D41/30 , F02D43/00
CPC分类号： F02D41/3076 , F02D11/107 , F02D31/009 , F02D2011/108 , F02D2200/602 , F02D2400/08 , F02D41/221 , F02D41/3029
摘要： In an internal combustion engine equipped with an electronic throttle control device for electrically driving a throttle valve, a control apparatus includes failure detecting means for detecting a failure of the electronic throttle control device, and control means for limiting fuel supply to the engine when the failure detecting means detects a failure of the electronic throttle control device, if the rotating speed of the engine becomes equal to or higher than a predetermined value.
摘要翻译： 在配备有用于电动驱动节气门的电子节气门控制装置的内燃机中，控制装置包括用于检测电子节气门控制装置的故障的故障检测装置，以及当故障时限制向发动机供油的控制装置 如果发动机的转速等于或高于预定值，则检测装置检测电子节气门控制装置的故障。
-
公开(公告)号：US5976056A
公开(公告)日：1999-11-02
申请号：US64876
申请日：1998-04-23
申请人： Takuya Matsumoto , Katsutoshi Usuki , Toru Hashimoto , Masakazu Kinoshita , Mitsuhiro Miyake , Seiichi Inoue
发明人： Takuya Matsumoto , Katsutoshi Usuki , Toru Hashimoto , Masakazu Kinoshita , Mitsuhiro Miyake , Seiichi Inoue
IPC分类号： F02D9/02 , F02D9/10 , F02D11/10 , F02D41/02 , F02D41/22 , F02D41/30 , F16H61/12 , F16H61/16 , F16H61/18 , F16H63/50
CPC分类号： B60W30/18 , B60W10/04 , B60W10/11 , B60W30/1819 , F02D11/107 , F02D41/3076 , B60W2550/13 , B60W2710/0666 , F02D11/106 , F02D2011/102 , F02D2011/108 , F02D2041/227 , F02D2200/602 , F02D2400/08 , F02D41/3029 , F16H61/16 , Y10S477/906 , Y10T477/6934
摘要： The present invention relates to a control apparatus for a vehicle equipped with an electronic throttle control unit (drive by wire) as electronic throttle control means and an automatic transmission, and the object of the invention is to provide a control apparatus for a vehicle which is capable of ensuring stable travel even in the case where a throttle valve is stuck by a failure of an electronic throttle control unit. In a control apparatus for a vehicle equipped with electronic throttle control means for electrically driving a throttle valve by drive means and an automatic transmission having a plurality of speed change gear stages, the control apparatus is provided with sticking judgment means for judging whether or not the throttle valve has been stuck, and speed change regulation means for inhibiting use of a predetermined gear stage among the speed change gear stages of the automatic transmission in the case where the throttle valve is judged to have been stuck by the sticking judgment means.
摘要翻译： 本发明涉及一种具有作为电子节气门控制装置和自动变速器的电子节气门控制单元（由电线驱动）的车辆的控制装置，其目的在于提供一种车辆的控制装置， 即使在节气门被电子节气门控制单元的故障卡住的情况下也能够确保稳定的行驶。 在具有用于通过驱动装置电动驱动节流阀的电子节气门控制装置和具有多个变速齿轮级的自动变速器的车辆的控制装置中，控制装置设置有粘贴判断装置，用于判断是否 节流阀已经被卡住，以及在判断节流阀已被粘着判断装置卡住的情况下，在自动变速器的变速齿轮级之间禁止使用预定档位的变速调节装置。
-
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）。
-
公开(公告)号：US6047679A
公开(公告)日：2000-04-11
申请号：US61185
申请日：1998-04-17
CPC分类号： F02D41/22 , F02D11/107 , F02D41/3076 , F02D2041/227 , F02D2200/602 , F02D2400/08 , F02D41/3029
摘要： A control apparatus for an internal combustion engine is applied to vehicles equipped with a so-called drive by wire. When one of several control systems within the control apparatus fails, the drive is urged to obtain repairs. Also, even when all of the several control systems of the drive by wire fail and the failures of these control systems cannot be detected, unpredictable motion of the throttle valve can be prevented, thereby enhancing vehicle safety. The present invention includes a plurality of electronic throttle control systems for electrically driving a throttle valve of an internal combustion engine, a failure detecting mechanism for detecting failures of the electronic throttle control systems, intake air volume control mechanism for driving the throttle valve in a closing direction and also supplying a predetermined intake air volume to the internal combustion engine if it is judged that all electronic throttle control systems have failed, and output suppression mechanism for controlling the driving of the throttle valve by a normal electronic throttle control system and also suppressing output of the internal combustion engine corresponding to the operational quantity of the accelerator pedal if the failure determining mechanism determines that one electronic throttle control system among the several electronic throttle control systems has failed.
摘要翻译： 用于内燃机的控制装置应用于配备有所谓的线驱动的车辆。 当控制装置内的多个控制系统之一失效时，驱动器被迫进行维修。 此外，即使由于电线的驱动的多个控制系统全部失败而不能检测到这些控制系统的故障，也可以防止节流阀的不可预测的运动，从而提高车辆的安全性。 本发明包括用于电驱动内燃机的节气门的多个电子节气门控制系统，用于检测电子节气门控制系统的故障的故障检测机构，关闭时驱动节气门的进气量控制机构 方向，并且如果判断所有电子节气门控制系统都已经发生故障，还向内燃机提供预定的进气量，以及通过普通电子节气门控制系统控制节气门的驱动的输出抑制机构，并且还抑制输出 如果所述故障确定机构确定所述几个电子节气门控制系统中的一个电子节气门控制系统已经失败，则所述内燃机对应于所述加速器踏板的操作量。
-
9.发明授权
公开(公告)号：US5651351A
公开(公告)日：1997-07-29
申请号：US647966
申请日：1996-08-01
IPC分类号： F02M25/08
CPC分类号： F02M25/0809
摘要： A fault diagnosis apparatus for detecting a fault in a fuel evaporative emission suppressing system, if it is concluded that an engine (1) is being operated in an operating state fulfilling fault diagnosis execution conditions, detects the current valve opening position of an idling speed control (ISC) valve (8) and then drives a purge control valve (46) to open the same. If a relatively high load is applied to the engine at this time, the threshold value determining the operating sensitivity of the ISC valve is so corrected as to be decreased. When a predetermined period of time has elapsed from the moment when the valve opening position of the ISC valve is detected, the valve opening position of the ISC valve is detected again. If the deviation between these valve opening positions is not larger than the threshold value, it is concluded that the purge air introduction by the drive of the purge control valve is not performed, that is, it is concluded that the valve is faulty. Since the operating sensitivity of the ISC valve increases as an engine load increases, erroneous diagnosis is prevented.
摘要翻译： PCT No.PCT / JP95 / 01972 Sec。 371日期：1996年8月1日 102（e）日期1996年8月1日PCT 1995年9月28日PCT公布。 公开号WO96 / 10691 日期1996年4月11日用于检测燃料蒸发排放抑制系统中的故障的故障诊断装置，如果判断为在满足故障诊断执行条件的运行状态下运转发动机（1），则检测当前阀开度位置 的空转速度控制（ISC）阀（8），然后驱动清洗控制阀（46）打开它。 如果此时对发动机施加相当高的负荷，则确定ISC阀的操作灵敏度的阈值被校正为减少。 当从检测到ISC阀的开阀位置开始经过预定的时间段时，再次检测ISC阀的开阀位置。 如果这些阀打开位置之间的偏差不大于阈值，则得出结论，不执行通过清洗控制阀的驱动的吹扫空气引入，即判断为阀故障。 由于ISC阀的运行灵敏度随着发动机负荷的增加而增加，因此可以防止误诊。
-
公开(公告)号：US5474051A
公开(公告)日：1995-12-12
申请号：US297893
申请日：1994-08-30
CPC分类号： F02M26/49 , F02D41/0055 , F02D41/221 , F02M26/53
摘要： A fault detection system is provided for an exhaust gas recirculation (EGR) system. The fault detection system is constructed of an engine operation state detection device, an EGR valve opening/closing device, and a system operation fault detection device. The engine operation state detection device is provided with an air flow sensor arranged in an intake passage on an upstream side of a throttle valve, and detects the engine operation state that the pressure difference between a pressure within an intake passage on a downstream side of the throttle valve and a pressure within the intake passage on an upstream side of the throttle valve is not greater than a critical pressure. Upon detection of the above engine operation state, the EGR valve opening/closing device opens or closes an EGR valve. When a change in the output from the air flow sensor between before and after the opening or closing of the EGR valve is detected to be smaller than a predetermined fault determination value, the system operation fault detection device detects that the EGR system is not operating properly. A fault determination zone is set by avoiding a critical pressure operation zone, so that a fault in the operation of the system can be detected with good accuracy.
摘要翻译： 提供了一种用于废气再循环（EGR）系统的故障检测系统。 故障检测系统由发动机运转状态检测装置，EGR阀开闭装置和系统运行故障检测装置构成。 发动机运转状态检测装置具有布置在节气门上游侧的进气通路中的空气流量传感器，并且检测发动机运转状态，即，在下游侧的进气通路内的压力差 在节流阀的上游侧的进气通路内的压力不大于临界压力。 在检测到上述发动机运转状态时，EGR阀打开/关闭装置打开或关闭EGR阀。 当EGR阀的打开或关闭之前和之后的空气流量传感器的输出的变化被检测为小于预定的故障判定值时，系统运行故障检测装置检测到EGR系统不能正常工作 。 通过避免临界压力操作区设置故障确定区，从而可以高精度地检测系统运行故障。
-
-
-
-
-
-
-
-
-
搜索结果
18 条记录 (耗时 0.026 秒)
