专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2014092131A Device for detecting abnormal inter-cylinder air-fuel ratio variation in multicylinder internal combustion engine 审中-公开
标题翻译：用于检测多缸内燃机中异常气缸间空燃比变化的装置
公开(公告)号：JP2014092131A
公开(公告)日：2014-05-19
申请号：JP2012244588
申请日：2012-11-06
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： SUZUKI KENJI , IWASAKI YASUSHI , KITAURA KOICHI , MIYAMOTO HIROSHI
IPC分类号： F02D45/00 , F02D29/06 , F02D41/14 , F02D41/22
CPC分类号： F02D41/1495 , F02D41/1441 , F02D41/1498 , F02D2250/24
摘要： PROBLEM TO BE SOLVED: To make it possible to change a load of an internal combustion engine to an optimum range when executing an abnormal variation detection.SOLUTION: A device for detecting an abnormal inter-cylinder air-fuel ratio variation in a multicylinder internal combustion engine detects the abnormal variation on the basis of a rotational fluctuation of the internal combustion engine. The device executes an engine speed feedback control so that the engine speed of the internal combustion engine coincides with a predetermined target engine speed. When executing the abnormality detection, the device controls an amount of power generation of a power generator driven by the internal combustion engine so that a load of the internal combustion engine falls within a target range.
摘要翻译：要解决的问题：在执行异常变化检测时，可以将内燃机的负荷改变到最佳范围。解决方案：一种用于检测多缸内燃中异常缸间空燃比变化的装置发动机基于内燃机的旋转波动来检测异常变化。该装置执行发动机转速反馈控制，使得内燃机的发动机转速与预定的目标发动机转速一致。当执行异常检测时，该装置控制由内燃机驱动的发电机的发电量，使得内燃机的负荷落在目标范围内。

2. 发明专利

JP2014005797A Sulfur poisoning determining device 审中-公开
标题翻译： SULFUR毒液测定装置
公开(公告)号：JP2014005797A
公开(公告)日：2014-01-16
申请号：JP2012143032
申请日：2012-06-26
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KITAURA KOICHI
IPC分类号： F01N3/20 , F02D41/04 , F02D41/14 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a device that determines whether a catalyst is poisoned with sulfur while preventing complication and an increase in cost of the device.SOLUTION: The present invention relates to a sulfur poisoning determination device that determines whether a catalyst arranged in an exhaust passage of an internal combustion engine is poisoned with sulfur. The sulfur poisoning determination device includes a post-catalyst sensor that detects an exhaust air-fuel ratio on the downstream side of the catalyst, periodically detects an output variation Hr of the post-catalyst sensor, calculates an increase rate Z of the detected output variation of the post-catalyst sensor with respect to time, and determines whether the catalyst is poisoned with sulfur on the basis of the increase rate Z.
摘要翻译：要解决的问题：提供一种确定催化剂是否被硫中毒同时防止并发症和装置成本增加的装置。解决方案：本发明涉及一种硫中毒确定装置，其确定是否配置在内燃机的排气通道用硫中毒。硫中毒判定装置包括检测催化剂下游侧的排气空燃比的催化后传感器，周期性地检测催化剂后传感器的输出变化量Hr，计算检测出的输出变化量的增加率Z 的催化剂传感器相对于时间，并且基于增加率Z确定催化剂是否被硫中毒。

3. 发明专利

JP2011231626A Device for diagnosis of catalyst abnormal condition 审中-公开
标题翻译：用于诊断催化剂异常条件的装置
公开(公告)号：JP2011231626A
公开(公告)日：2011-11-17
申请号：JP2010099972
申请日：2010-04-23
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KITAURA KOICHI , FUJIWARA TAKAHIKO , MIYOSHI YUJI , OGAMI RYOTA
IPC分类号： F01N3/20 , F02D41/02 , F02D41/14 , F02D41/22 , F02D45/00
CPC分类号： Y02T10/40
摘要： PROBLEM TO BE SOLVED: To suppress wrong diagnoses by improving diagnostic accuracy.SOLUTION: The device executes an active air-fuel ratio control for alternatively switching an air-fuel ratio in upstream side of catalysts into lean control or rich control. After a sensor output reaches a threshold after catalyst and, as the same time, the lean control and the rich control are switched, when a post-catalyst sensor output is about to exceed a predetermined reference value at the arrival of a pre-catalyst air-fuel ratio at a stoichi, the device gives feedback correction to the threshold so that a difference between a post-catalyst sensor output upon reaching the stoichi and the reference value is released. The device determines whether the catalyst is normal or not based on the threshold when the difference is released.
摘要翻译：要解决的问题：通过提高诊断准确性来抑制错误的诊断。
解决方案：该装置执行主动空燃比控制，以便将催化剂上游侧的空燃比转换为精密控制或丰富的控制。在催化剂之后传感器输出达到阈值之后，同时切换稀疏控制和浓控制，当催化剂前的气体到达时催化剂后传感器输出将要超过预定的参考值 - 燃料比，该装置对阈值进行反馈校正，使得在达到化学计量时的催化剂后传感器输出与参考值之间的差异被释放。当差异被释放时，该装置基于阈值确定催化剂是否正常。版权所有（C）2012，JPO＆INPIT

4. 发明专利

JP2011089424A Catalyst abnormality diagnostic device 有权
标题翻译：催化剂异常诊断装置
公开(公告)号：JP2011089424A
公开(公告)日：2011-05-06
申请号：JP2009241373
申请日：2009-10-20
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KIMURA KOICHI , KITAURA KOICHI , MIYOSHI YUJI , SAWADA YUTAKA
IPC分类号： F01N3/20 , B01D53/94 , F01N3/24 , F02D41/04
摘要： PROBLEM TO BE SOLVED: To provide a catalyst degradation detector for an internal combustion engine, preventing a reduction in diagnostic accuracy and erroneous diagnosis. SOLUTION: An exhaust gas air-fuel ratio A/Ff is alternately switched to a rich side and a lean side by active air-fuel ratio control, and the amount of oxygen occluded OSC in a catalyst is measured several times. Based on these measured values, it is determined whether or not the catalyst is normal. When the output Vr of a sensor behind the catalyst is maintained within predetermined ranges VL-VR in the vicinity of stoichiometry immediately before time t1 with diagnosis execution conditions satisfied, diagnosis is prohibited. Diagnosis, including an initial measured value OSC1 remarkably smaller than a true value, is prevented, and the reduction in the diagnostic accuracy and wrong diagnosis are prevented. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于内燃机的催化剂劣化检测器，防止诊断精度降低和错误诊断。解决方案：通过主动空燃比控制将废气空燃比A / Ff交替地切换到浓侧和稀侧，并且测量催化剂中的吸氧量OSC几次。基于这些测量值，确定催化剂是否正常。当催化剂后面的传感器的输出Vr在满足诊断执行条件的时间t1之前在化学计量附近保持在预定范围VL-VR内时，禁止诊断。包括初始测量值OSC1显着小于真值的诊断，可以防止诊断准确性和错误诊断的降低。版权所有（C）2011，JPO＆INPIT

5. 发明专利

JP2010112254A Abnormality determination system for particulate filter 审中-公开
标题翻译：颗粒过滤器异常测定系统
公开(公告)号：JP2010112254A
公开(公告)日：2010-05-20
申请号：JP2008285362
申请日：2008-11-06
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KITAURA KOICHI
IPC分类号： F01N3/18 , F01N3/02 , F01N3/20 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a technology accurately determining the abnormality of a particulate filter installed in an exhaust passage of an internal combustion engine. SOLUTION: The abnormality of the filter is determined according to a variation in the temperature of the exhaust gas flowing out of the filter when the temperature of the exhaust gas is lowered without reducing the flow rate of the exhaust gas flowing into the filter. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种准确地确定安装在内燃机的排气通道中的微粒过滤器的异常的技术。解决方案：当排气的温度降低时，根据流过过滤器的废气的温度变化来确定过滤器的异常，而不降低流入过滤器的废气的流量。版权所有（C）2010，JPO＆INPIT

6. 发明专利

JP2009191787A Fuel property determining device and catalyst deterioration diagnosing device equipped with it 有权
标题翻译：燃料属性确定装置和催化剂检测装置与其配套
公开(公告)号：JP2009191787A
公开(公告)日：2009-08-27
申请号：JP2008034720
申请日：2008-02-15
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KIMURA KOICHI , KIDOKORO TORU , SAWADA YUTAKA , IWASAKI YASUSHI , KITAURA KOICHI
IPC分类号： F02D45/00 , F01N3/20 , F01N3/24
摘要： PROBLEM TO BE SOLVED: To provide a fuel property determining device of high precision and reliability and a catalyst deterioration diagnosing device equipped with it. SOLUTION: The fuel property determining device actively changes and controls an air-fuel ratio to a rich side or a lean side whenever the air-fuel ratio detected by a post-catalyst air-fuel sensor on a catalyst downstream side turns around to the lean side or the rich side and estimates a sulfur concentration of fuel based on a rich time TR and a lean time TL at that time. The fuel property determining device corrects a measured value of an oxygen storage capacity based on the rich time TR and the lean time TL and diagnoses catalyst deterioration while eliminating sulfur affection. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种具有高精度和可靠性的燃料性质确定装置以及配备有它的催化剂劣化诊断装置。解决方案：每当催化剂下游侧的催化剂后空气传感器检测到的空燃比转过来时，燃料特性确定装置主动地改变和控制到富侧或稀侧的空燃比到稀侧或富侧，并且基于富时间TR和当时的稀薄时间TL来估计燃料的硫浓度。燃料特性确定装置基于富时TR和稀时TL来校正储氧容量的测量值，并且在消除硫的影响的同时诊断催化剂劣化。版权所有（C）2009，JPO＆INPIT

7. 发明专利

JP2009121414A Catalyst deterioration diagnosing device for internal combustion engine 审中-公开
标题翻译：用于内燃机的催化剂检测装置
公开(公告)号：JP2009121414A
公开(公告)日：2009-06-04
申请号：JP2007298457
申请日：2007-11-16
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： MIYAMOTO HIROSHI , KIDOKORO TORU , SAWADA YUTAKA , IWASAKI YASUSHI , KIMURA KOICHI , KITAURA KOICHI
IPC分类号： F01N3/20 , F01N3/24 , F02D41/04 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To carry out precise and reliable diagnosis regardless of the sulfur concentration of fuel. SOLUTION: A plurality of active air/fuel ratio control having different center air/fuel ratios is executed, thereby measuring a plurality of oxygen occlusion amount corresponding to respective center air/fuel ratios. The sulfur concentration of fuel is estimated according to the change rate of the oxygen occulusion amount to change of the center air/furl ratio. According to the estimated sulfur concentration, an oxygen occulusion capacity measuring value is corrected if necessary. The oxygen occulusion capacity measuring value is corrected to be a precise value without sulfur influence, so that the precise and reliable diagnosis can be executed. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：无论燃料的硫浓度如何，都要进行精确可靠的诊断。解决方案：执行具有不同中心空气/燃料比的多个主动空气/燃料比控制，从而测量对应于各个中心空气/燃料比的多个氧气阻塞量。燃料的硫浓度根据氧气渗透量对中心空气/气流比的变化的变化率进行估计。根据估计的硫浓度，必要时校正氧气容积测定值。将氧气渗透能力测量值校正为无硫影响的精确值，从而可以进行精确可靠的诊断。版权所有（C）2009，JPO＆INPIT

8. 发明专利

JP2009041515A Catalyst deterioration diagnosis device for internal combustion engine 审中-公开
标题翻译：用于内燃机的催化剂检测诊断装置
公开(公告)号：JP2009041515A
公开(公告)日：2009-02-26
申请号：JP2007209640
申请日：2007-08-10
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KIMURA KOICHI , KIDOKORO TORU , IWASAKI YASUSHI , KITAURA KOICHI
IPC分类号： F01N3/20 , B01D53/94 , F01N3/24 , F02D41/02 , F02D41/04 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To prevent wrong diagnosis by accurately estimating fuel properties and improving diagnosis accuracy. SOLUTION: Active air-fuel ratio control is carried out in such a manner that exhaust gas air-fuel ratio detected by an air-fuel ratio sensor is changed over alternately to a lean side and a rich side. First oxygen storage capacity OSC(1) of a catalyst is measured by using a value of fuel injection quantity during active air-fuel ratio control. Besides, second oxygen storage capacity OSC(2) is measured by using a value of engine speed without using the value of fuel injection quantity during active air-fuel ratio control. Fuel properties are estimated based on the measurement values. Since the second oxygen storage capacity measurement value is not affected by increase of fuel injection quantity due to use of alcohol fuel, the fuel properties can be accurately estimated based on the value and the first oxygen storage capacity measurement value. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：通过精确估算燃料性能和提高诊断精度来防止错误的诊断。解决方案：主动空燃比控制以这样的方式进行，使得由空燃比传感器检测的废气空燃比交替地改变为稀侧和富侧。催化剂的第一储氧容量OSC（1）通过使用主动空燃比控制中的燃料喷射量的值来测量。此外，在主动空燃比控制中，不使用燃料喷射量的值，通过使用发动机转速值来测量第二储氧容量OSC（2）。燃料性质根据测量值估算。由于由于使用酒精燃料而不会因燃料喷射量的增加而影响第二氧气存储容量测量值，所以可以基于该值和第一储氧能力测量值来准确地估计燃料特性。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2008231946A Catalyst deterioration detection device for internal combustion engine 有权
标题翻译：用于内燃机的催化剂检测装置
公开(公告)号：JP2008231946A
公开(公告)日：2008-10-02
申请号：JP2007068781
申请日：2007-03-16
申请人： Toyota Motor Corp , トヨタ自動車株式会社
发明人： KIMURA KOICHI , KIDOKORO TORU , SAWADA YUTAKA , IWASAKI YASUSHI , KITAURA KOICHI
IPC分类号： F01N3/20 , F01N3/24 , F02D45/00
摘要： PROBLEM TO BE SOLVED: To prevent the temporary deterioration of a catalyst caused by being left for a long period of time from being erroneously detected as deterioration. SOLUTION: When the stop time period τ of an internal combustion engine is measured during the stopping of the internal combustion engine and the measured stop time period τ is a predetermined valve τs or more, the detection of the deterioration of the catalyst is prohibited until a predetermined time period elapses after restarting the operation of the internal combustion engine. It is possible to prevent erroneous detection caused by the influence of CO 2 adsorbed in the catalyst during stopping of the internal combustion engine. COPYRIGHT: (C)2009,JPO&INPIT

10. 发明专利

JP2007205319A Method for judging combustion condition of internal combustion engine 有权
标题翻译：评估内燃机燃烧条件的方法
公开(公告)号：JP2007205319A
公开(公告)日：2007-08-16
申请号：JP2006028124
申请日：2006-02-06
申请人： Daihatsu Motor Co Ltd , Diamond Electric Mfg Co Ltd , Toyota Motor Corp , ダイハツ工業株式会社 , ダイヤモンド電機株式会社 , トヨタ自動車株式会社
发明人： ASANO MORIHITO , FUKUMURA YOSHIYUKI , IZUMI MITSUHIRO , KITAURA KOICHI , SATOYA KOICHI , YOSHIOKA MAMORU
IPC分类号： F02P17/12 , F02D45/00
CPC分类号： F02D35/021 , F02D35/028 , F02P17/12 , F02P2017/125 , G01L23/221 , G01L23/225 , G01M15/042 , H01T13/58
摘要： PROBLEM TO BE SOLVED: To solve a problem wherein it becomes difficult to detect ion current when ignition timing is retarded if ion current is detected with one kind of threshold used.
SOLUTION: A method detects ion current generated in a combustion chamber of an internal combustion engine, measures characteristic values of ion current detected during ion current is being generated and generation period during which ion current is generated, and judges a combustion condition from relation between the characteristic values and generation period in relation to time passing from ignition. Criteria are set large in relation to the characteristic values and short in relation to generation period to judge that the combustion period is normal when a time passing from ignition is short, and criteria are set smaller in relation to the characteristic values and longer in relation to generation period to judge that the combustion period is normal as the time passing from ignition gets longer.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了解决当使用一种阈值检测到离子电流时，当点火正时被延迟时难以检测离子电流的问题。解决方案：一种检测在内燃机的燃烧室中产生的离子电流的方法，测量在产生离子电流期间检测到的离子电流的特性值和产生离子电流的产生时间，并且判断来自特征值与产生时间之间的关系与点火时间相关。标准相对于特征值设定较大，与发电周期相比较短，以判断当点火时间短时燃烧期间正常，标准相对于特征值设定得较小，相对于判断燃烧时间是否正常，随着点火时间的延长越长。版权所有（C）2007，JPO＆INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式