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公开(公告)号：US06698187B2
公开(公告)日：2004-03-02
申请号：US10211304
申请日：2002-08-05
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N11/00 , F01N11/007 , F01N13/009 , F01N2550/03 , F01N2570/14 , F01N2900/0422 , Y02A50/2344 , Y02T10/22 , Y02T10/47
摘要： An exhaust gas purifying apparatus for an internal-combustion engine, including a three-way catalyst, nitrogen oxide purifier that is disposed downstream of the three-way catalyst, an upstream oxygen sensor that is disposed between the three-way catalyst and the nitrogen oxide purifier, and a downstream oxygen sensor that is disposed downstream of the nitrogen oxide purifier. An abnormality determination criterion is set in accordance with the exhaust gas amount of the internal-combustion engine wherein the criterion is equivalent to a time period until the output of the downstream oxygen density sensor is read since the output of the upstream oxygen density sensor is changed to rich after the air-fuel ratio of the exhaust gas was over from lean to rich. Any abnormality of the nitrogen oxide purifier is determined when the output of the downstream oxygen density sensor has been changed to rich before the time period represented by the criterion elapses.
摘要翻译： 一种用于内燃机的排气净化装置，包括设置在三元催化剂下游的三元催化剂，氮氧化物净化器，设置在三元催化剂和氮氧化物之间的上游氧传感器 净化器和设置在氮氧化物净化器下游的下游氧传感器。 根据内燃机的废气量设定异常判定基准，该内燃机的排气量等于直到下游氧浓度传感器的输出从上游氧浓度传感器的输出变化来读取下游氧浓度传感器的输出 在排气的空燃比从瘦到浓之后变得丰富。 在通过标准所表示的时间段之前，当下游氧浓度传感器的输出变为浓度时，确定氮氧化物净化器的任何异常。
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公开(公告)号：US07448459B2
公开(公告)日：2008-11-11
申请号：US10315178
申请日：2002-12-10
IPC分类号： B60K6/22
CPC分类号： B60W20/50 , B60K6/485 , B60K6/54 , B60W10/06 , B60W10/08 , B60W20/00 , B60W2510/0671 , F02D13/06 , F02D41/0005 , F02D41/0087 , F02D2041/0012 , F02D2200/0406 , F02M26/49 , Y02T10/18 , Y02T10/42 , Y02T10/6226 , Y02T10/6286
摘要： A method for detecting an abnormality in a hybrid vehicle. The hybrid vehicle includes an engine that can run in a cylinder cut-off state where intake and exhaust valve lifts are made zero, and a motor/generator that functions as both a motor and a generator. The vehicle travels by means of the power of at least one of the engine and the motor/generator and carries out regenerative braking by the motor/generator while running the engine in a cylinder cut-off state during deceleration. When detecting an abnormality in a negative intake pressure sensor or an EGR control valve based on the negative intake pressure of the engine, the engine is prohibited from running in a cylinder cut-off state even during deceleration, thus generating a negative intake pressure and thereby enabling the abnormality detection to be carried out without any problems.
摘要翻译： 一种用于检测混合动力车辆的异常的方法。 混合动力车辆包括能够以进气和排气阀提升为零的气缸切断状态运行的发动机和用作电动机和发电机的电动机/发电机。 车辆通过发动机和电动机/发电机中的至少一个的动力行驶，并且在减速期间以汽缸切断状态运行发动机时由电动机/发电机进行再生制动。 基于发动机的负吸入压力检测负吸入压力传感器或EGR控制阀的异常时，即使在减速时也禁止发动机在气缸切断状态下运转，从而产生负吸入压力 能够无异常地进行异常检测。
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公开(公告)号：US06651436B2
公开(公告)日：2003-11-25
申请号：US10107210
申请日：2002-03-28
IPC分类号： F01B2104
CPC分类号： B60W20/13 , B60K6/485 , B60K6/54 , B60L7/10 , B60L2240/16 , B60W10/06 , B60W10/08 , B60W10/18 , B60W10/24 , B60W20/00 , B60W30/18127 , B60W2520/105 , B60W2710/18 , F02D41/123 , Y02T10/48 , Y02T10/6226 , Y02T10/6286 , Y10S903/903 , Y10S903/917 , Y10S903/918 , Y10S903/947 , Y10T477/24
摘要： A control apparatus for a hybrid vehicle of the present invention determines whether a brake switch flag F_BKSW is “1” or not (step S101), and in the case where the brake is on (“yes”), obtains a deceleration regeneration computation value DECRGN by table retrieval from a #REGENBR table. In the case where the brake is off (“no”), it is determined whether a fuel supply cut delay time regeneration flag F_RGNFCD is “1” or not (step S104). In the case where regeneration is not performed in the fuel supply cut delay time (“no”), a deceleration regeneration computation value DECRGN is obtained by table retrieval from a #REGEN table (step S105). On the other hand, in the case where regeneration is performed in the fuel supply cut delay time (“yes”), a deceleration regeneration computation value DECRGN is obtained by table retrieval from a #RGNNFCD table (step S106).
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公开(公告)号：US06739122B2
公开(公告)日：2004-05-25
申请号：US10196154
申请日：2002-07-17
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N11/007 , F01N2550/03 , F02D41/1456 , F02D41/1475 , F02D2041/1422 , Y02A50/2324 , Y02T10/22 , Y02T10/47
摘要： The present invention provides an air-fuel ratio feedback control apparatus for an internal-combustion engine. The apparatus includes an air-fuel ratio detector that is disposed in an exhaust system of the engine so as to detect an air-fuel ratio of exhaust gas, NOx purifier for purifying NOx contained in the exhaust gas during a lean operation and feedback controller for making a feedback control upon an air-fuel ratio of air-fuel mixture to be supplied to the engine based on an output of the air-fuel ratio detector. A diagnostic system diagnoses the NOx purifier based on an output of an O2 sensor disposed downstream of the NOx purifier when the air-fuel ratio of the air-fuel mixture to be supplied to the engine has been changed from lean to rich and gain changer for making a feedback control gain of the feedback controller smaller when the air-fuel ratio is changed from lean to rich.
摘要翻译： 本发明提供一种用于内燃机的空燃比反馈控制装置。 该装置包括：空燃比检测器，其布置在发动机的排气系统中，以便检测废气的空燃比，用于净化排气中的NOx的净化器，用于净化排气中的NOx;以及反馈控制器， 基于空燃比检测器的输出对发动机供给的空气燃料混合物的空燃比进行反馈控制。 当供给到发动机的空气 - 燃料混合物的空燃比已经从稀释变为富和增益变换器时，诊断系统基于设置在NOx净化器下游的O2传感器的输出来诊断NOx净化器， 当空燃比从浓度变为浓时，反馈控制器的反馈控制增益越小。
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公开(公告)号：US06823658B2
公开(公告)日：2004-11-30
申请号：US10196729
申请日：2002-07-17
IPC分类号： F01N300
CPC分类号： F01N3/0842 , F01N3/0814 , F01N11/007 , F01N13/009 , F01N2550/03 , F01N2570/04 , F02D41/028 , F02D41/1444 , F02D41/1456 , F02D2200/0808 , Y02T10/22 , Y02T10/24 , Y02T10/47
摘要： An exhaust gas purifying apparatus for an internal-combustion engine includes an exhaust gas purifier having a nitrogen oxide purifier for purifying nitrogen oxide contained in exhaust gases and an oxygen density sensor located downstream of the exhaust gas purifier. The apparatus further includes a sulfur oxide detector for detecting the density of sulfur oxide in the exhaust gas purifier, a sulfur-poisoning recovery apparatus for recovering the exhaust gas purifier from sulfur poisoning when the sulfur oxide detector determines the sulfur oxide density is high, a lean operation limiter for limiting the lean operation of the engine to such operation region that is not influenced so much by the sulfur poisoning after the exhaust gas purifier has been recovered from the sulfur poisoning, and a deterioration determiner for determining deterioration of the exhaust gas purifier based on the output of the oxygen density sensor during the lean operation of the engine.
摘要翻译： 一种用于内燃机的废气净化装置，具有：排气净化器，具有净化废气中所含的氮氧化物的氮氧化物净化器和位于排气净化器下游的氧浓度传感器。 该装置还包括用于检测废气净化器中的硫氧化物的密度的硫氧化物检测器，当硫氧化物检测器确定硫氧化物密度高时，用于从硫中毒中回收废气净化器的硫中毒回收装置， 用于将排气净化器从硫中毒中回收后不会受到硫中毒影响的发动机的稀薄运转的限制器，以及用于确定废气净化器的劣化的劣化判定器 基于在发动机的稀薄运转期间的氧浓度传感器的输出。
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6.发明授权Failure determination system and method for internal combustion engine and engine control unit 有权内燃机和发动机控制单元的故障判定系统和方法公开(公告)号：US06763707B2
公开(公告)日：2004-07-20
申请号：US10319176
申请日：2002-12-12
申请人： Katsuhiro Kumagai , Shinichi Kitajima , Futoshi Nishioka , Toshinari Shinohara , Kan Nakaune , Atsushi Matsubara
发明人： Katsuhiro Kumagai , Shinichi Kitajima , Futoshi Nishioka , Toshinari Shinohara , Kan Nakaune , Atsushi Matsubara
IPC分类号： G01L326
CPC分类号： F02D13/06 , F02D41/0087 , F02D41/12 , F02D41/1454 , F02D41/1456 , F02D41/221 , F02D2041/001 , F02D2041/0012 , F02D2200/0404 , F02D2200/0406 , G01M15/104 , Y02T10/18 , Y02T10/40
摘要： A failure determination system and method for an internal combustion engine and an engine control unit are provided which are capable of properly determining a failure of a variable valve mechanism for inactivating a valve system associated with at least one of cylinders during a predetermined operation of the engine, by discriminating a misfire caused by the failure of the mechanism from a normal misfire. Fuel injection valves inject fuel for each cylinder and oxygen concentration of exhaust gases is detected. A misfire condition is detected on a cylinder-by-cylinder basis. Fuel injection to a misfiring cylinder is stopped. A failure of the mechanism is determined, when a parameter based on the oxygen concentration detection indicates a richer value of an actual air-fuel ratio of the exhaust gases than a predetermined reference value does, under a condition of the fuel injection being stopped.
摘要翻译： 提供了一种用于内燃机和发动机控制单元的故障判定系统和方法，其能够在发动机的预定操作期间适当地确定用于停用与至少一个气缸相关联的阀系统的可变气门机构的故障 通过区分由机制的失败引起的失火从正常的失火。 燃油喷射阀为每个气缸喷射燃料，并检测到废气的氧气浓度。 在逐个气缸的基础上检测到失火状态。 燃油喷射到失火气缸停止。 当燃料喷射停止的条件下，当基于氧浓度检测的参数表示废气的实际空燃比比预定参考值确定的更丰富时，确定该机构的故障。
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公开(公告)号：US5685283A
公开(公告)日：1997-11-11
申请号：US497330
申请日：1995-06-30
申请人： Futoshi Nishioka , Tetsushi Hosokai
发明人： Futoshi Nishioka , Tetsushi Hosokai
IPC分类号： F02D41/14
CPC分类号： F02D41/1475 , F02D41/1456
摘要： An air-fuel ratio control system for an engine for controlling an amount of a fuel mixture to be delivered into a combustion chamber so that an air-fuel ratio of the fuel mixture attains a target air-fuel ratio performs selecting one of a plurality of predetermined target air-fuel ratios according to engine operating conditions, controlling an amount of a fuel mixture so as to attain a selected target air-fuel ratio, and changing a speed at which the target air-fuel ratio is changed from one to another ratio higher with an increase in deviation of the other target air-fuel ratio from the one target air-fuel ratio.
摘要翻译： 一种用于控制要输送到燃烧室中的燃料混合物的量使得燃料混合物的空燃比达到目标空燃比的发动机的空燃比控制系统，执行选择多个 根据发动机工作条件确定目标空燃比，控制燃料混合物的量以获得所选择的目标空燃比，以及将目标空燃比从一个比例变化到另一比例的速度 随着另一个目标空燃比与一个目标空燃比的偏差的增加而增加。
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公开(公告)号：US20090112448A1
公开(公告)日：2009-04-30
申请号：US12289189
申请日：2008-10-22
IPC分类号： F02D9/00
CPC分类号： F02D41/0002 , F02D41/061 , F02D2200/0404 , Y02T10/42
摘要： A throttle valve control system for an internal combustion engine which controls an opening of a throttle valve of the engine so that the opening coincides with a target opening. A regulation value of a change amount of the throttle valve opening is set according to at least a temperature parameter indicative of a temperature of the engine. The target opening is set within a range defined by the regulation value. An upper limit value and a lower limit value of the regulation value is set according to the temperature parameter, and a transition control is performed wherein the regulation value is set according to an elapsed time period after start of the engine so as to change from the lower limit value to the upper limit value.
摘要翻译： 一种用于内燃机的节流阀控制系统，其控制发动机的节流阀的开度，使得开度与目标开度重合。 至少根据表示发动机的温度的温度参数来设定节气门开度的变化量的调节值。 目标开度设定在由调节值限定的范围内。 根据温度参数设定调节值的上限值和下限值，并且进行转变控制，其中调节值根据发动机起动后的经过时间设定，从而从 下限值为上限值。
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公开(公告)号：US20090112443A1
公开(公告)日：2009-04-30
申请号：US12289188
申请日：2008-10-22
IPC分类号： F02D41/30
CPC分类号： F02D41/0002 , F02D19/0623 , F02D19/0631 , F02D19/0665 , F02D19/0692 , F02D19/081 , F02D19/084 , F02D19/088 , F02D41/0025 , F02D41/064 , F02D41/1495 , F02D41/1498 , F02D41/221 , F02D41/222 , F02D2011/102 , F02D2200/0612 , F02D2200/1015 , F02D2250/26 , F02M43/00 , Y02T10/36 , Y02T10/42
摘要： A control system for an internal combustion engine in which fuel containing alcohol is used. In the control system, a maximum opening of a throttle valve of the engine is set, and a target opening of the throttle valve is set to a value which is equal to or less than the maximum opening. An opening of the throttle valve is controlled so as to coincide with the target opening. The maximum opening is according to a concentration parameter indicative of a concentration of alcohol in the fuel, a temperature parameter indicative of a temperature of the engine, and a number of ignitions performed after start of the engine.
摘要翻译： 一种内燃机的控制系统，其中使用含酒精的燃料。 在控制系统中，设定发动机的节流阀的最大开度，将节流阀的目标开度设定为等于或小于最大开度的值。 控制节流阀的开度以与目标开度一致。 最大开度根据指示燃料中酒精浓度的浓度参数，表示发动机温度的温度参数以及发动机起动后执行的点火次数。
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公开(公告)号：US06321696B1
公开(公告)日：2001-11-27
申请号：US09620971
申请日：2000-07-20
IPC分类号： F01P514
CPC分类号： F01P11/16 , F01P2031/00 , F01P2031/32
摘要： The invention relates to an apparatus for diagnosing thermostat trouble in an engine cooling system comprising a thermostat which works to open a valve to make a cooling water flow through a radiator when the cooling water temperature for an engine becomes more than a predetermined temperature, or to close the valve to make the cooling water bypass a radiator when this temperature becomes less than the predetermined temperature. The apparatus comprises means for calculating a radiation heat amount from a radiator received by the cooling water for the engine and means for determining whether the thermostat trouble has occurred based on the radiation heat amount calculated by the means for calculating the radiation heat amount.
摘要翻译： 本发明涉及一种用于诊断发动机冷却系统中的恒温器故障的装置，包括恒温器，其工作以在发动机的冷却水温度超过预定温度时打开阀门以使冷却水流过散热器，或者 当该温度低于预定温度时，关闭阀门使冷却水旁路散热器。 该装置包括用于计算由用于发动机的冷却水接收的散热器的辐射热量的装置和基于由计算辐射热量的装置计算的辐射热量来确定是否发生了恒温器故障的装置。
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