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1. 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

2. 发明专利

JP2007205318A Method for judging air fuel ratio of internal combustion engine based on ion current 有权
标题翻译：基于离子电流判断内燃机空燃比的方法
公开(公告)号：JP2007205318A
公开(公告)日：2007-08-16
申请号：JP2006028123
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 , SATOYA KOICHI , YOSHIOKA MAMORU , KITAURA KOICHI
IPC分类号： F02D45/00 , F02P17/12
摘要： PROBLEM TO BE SOLVED: To judge a level of air fuel ratio based on the degree of variation generation period of time and peak judgment period of time by measuring the generation period of time during which ion current is generated and the peak judgment period of time including a period of time during which the maximum characteristic value is shown.
SOLUTION: In this method for judging air fuel ratio of the internal combustion engine based on ion current, the peak judgment period of time P2 including the period of time during which the maximum characteristic value of ion current generated in the combustion chamber per each ignition is shown and the generation period of time P1 during which ion current is generated are measured and air fuel ratio is judged with using the measured peak judgment period of time P2 and generation period of time P1. When variation of the measured generation periods of time is large, it is judged that actual air fuel ratio is leaner than theoretical air fuel ratio. When variation of the measured peak judgment periods of time is large, it is judged that the actual air fuel ratio is leaner than air fuel ratio judged based on the measured generation period of time.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过测量产生离子电流的产生时间和峰值判定周期，基于通过测量产生离子电流的时间的时间的变化程度和时间的峰值判断时间段来判断空燃比的水平的时间，包括显示最大特征值的时间段。解决方案：在这种基于离子电流判断内燃机的空燃比的方法中，包括在燃烧室内产生的离子电流的最大特性值的时间段P2的峰值判定时间段P2 示出了每个点火，并且测量产生离子电流的时间段P1，并且使用测量的峰值判定时间段P2和时间段P1来判断空燃比。当测量的发电时间段的变化大时，判断实际空燃比比理论空燃比更稀。当所测量的峰值判定时间段的变化大时，判断实际空燃比比基于所测量的发生时间段判定的空燃比更稀。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007205317A Method for operation control of internal combustion engine based on ion current 有权
标题翻译：基于离子电流的内燃机运行控制方法
公开(公告)号：JP2007205317A
公开(公告)日：2007-08-16
申请号：JP2006028122
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 , F02D41/062 , F02P5/152 , F02P2017/125
摘要： PROBLEM TO BE SOLVED: To solve a problem wherein ion current attendant on combustion can not be normally detected in spite of normal combustion due to low wall surface temperature in a combustion chamber in several cycles right after engine start, for example, which leads to such a misjudgement that a combustion condition is deteriorated or a condition is close to misfire.
SOLUTION: In a method detecting ion current I generated in the combustion chamber 30 and controlling an operation condition of an engine 100 which is an internal combustion engine, based on a condition of detected ion current I, control for start based on ion current I is stopped for predetermined cycles right after start.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题为了解决在发动机起动之后几个循环中由于燃烧室中的低壁面温度而发生正常燃烧而不能正常检测出燃烧时的离子电流的问题，例如，导致燃烧条件恶化或状况接近失火的错误判断。解决方案：在检测在燃烧室30中产生的离子电流I并基于检测到的离子电流I的条件控制作为内燃机的发动机100的操作条件的方法中，基于离子的起动控制电流I在启动后立即停止预定的周期。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2007205320A Method for judging lean combustion of internal combustion engine 有权
标题翻译：评估内燃机发动机燃烧的方法
公开(公告)号：JP2007205320A
公开(公告)日：2007-08-16
申请号：JP2006028125
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 , SATOYA KOICHI , YOSHIOKA MAMORU , KITAURA KOICHI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To accurately and quickly judge that air fuel ratio changes to an excessively high condition, namely an over lean condition according to various behavior (wave shape) of detected ion current even at a time of start of an internal combustion engine when a sensor for detecting air fuel ratio, an O
2 sensor for example, is not activated.
SOLUTION: In the internal combustion engine executing lean combustion control at a time of start, all generation period during which ion current is generated during measuring period is defined as all generation period, generation period during which ion current is generated after ignition and disappears at first time during the measuring period is defined as initial generation period, and generation period during which ion current is generated after ion current corresponding to the initial generation period disappears during the measuring period is defined as auxiliary generation period. Excessive lean combustion is judged if one of conditions that generation period after a crank angle is long and that all generation period of present time has difference of a predetermined value or more from all generation period of a previous time in generation period around the crank angle where intermittent generation of ion current of which auxiliary period is a criterion or less is repeated predetermined times or more is satisfied and if initial generation period of present time is predetermined value or less.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在内部启动时，也可以根据检测到的离子电流的各种行为（波形），准确，快速地判断空燃比变为过高的状态，即过稀的状态用于检测空燃比的传感器（例如O 2 传感器）的内燃机未被激活。解决方案：在启动时执行稀燃控制的内燃机中，在测量期间产生离子电流的所有发生周期定义为所有发电周期，点火后产生离子电流的产生周期，在测量期间第一次消失被定义为初始产生周期，并且在测量期间消除与初始发生时段相对应的离子电流之后产生离子电流的产生周期被定义为辅助发生周期。判断过度的稀燃燃烧是否在曲轴角度之后的发电期间的条件之一以及当前时刻的所有发电周期与围绕曲柄角的发电期间的前一时刻的全部发电期间的预定值以上的差为止辅助期间为准则以下的离子电流的间歇生成被重复规定次数以上，并且当前时刻的初始生成周期为规定值以下。版权所有（C）2007，JPO＆INPIT

5. 发明专利

JP2007182844A Determining method for ion current detection system of internal combustion engine 审中-公开
标题翻译：内燃机离子检测系统的测定方法
公开(公告)号：JP2007182844A
公开(公告)日：2007-07-19
申请号：JP2006002523
申请日：2006-01-10
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 , F02P11/00 , G01M15/11
摘要： PROBLEM TO BE SOLVED: To accurately determine failure of a spark plug because ion current cannot be accurately detected if the spark plug smolders when detecting the ion current generated in a combustion chamber of an engine in some cases.
SOLUTION: This internal combustion engine provided with the spark plug detects the ion current generated in the combustion chamber after ignition by an ion current detection system constituted by including the spark plug, measures a period of ion current generation when ion current is generated, determines that the ion current detection system is abnormal when degree of fluctuation of the measured period of ion current generation is deviated from a scope of allowance in which the degree of fluctuation is set at a value allowed for an operation condition at the time and the internal combustion engine does not rotate and fluctuate, and determines that the ion current detection system is not abnormal when the degree of fluctuation of the measured period of ion current generation is deviated from the scope of allowance and the internal combustion engine rotates and fluctuates.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了准确地确定火花塞的故障，因为在某些情况下当检测到在发动机的燃烧室中产生的离子电流时，如果火花塞窒息，则不能精确地检测到离子电流。设置有火花塞的内燃机通过由包括火花塞构成的离子电流检测系统来检测在点燃之后在燃烧室中产生的离子电流，测量当产生离子电流时产生离子电流的周期确定离子电流检测系统在离子电流产生的测量周期的波动程度偏离允许的程度的范围内时，离子电流检测系统异常，其中波动程度被设定为当时操作条件允许的值，内燃机不旋转波动，当离子电流产生的测量周期的波动程度偏离允许范围并且内燃机旋转和波动时，确定离子电流检测系统不是异常的。版权所有（C）2007，JPO＆INPIT

6. 发明专利

JP2007205321A Method for detecting air fuel ratio by ion current in internal combustion engine 有权
标题翻译：在内燃机中通过离子电流检测空气燃料比的方法
公开(公告)号：JP2007205321A
公开(公告)日：2007-08-16
申请号：JP2006028126
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 , SATOYA KOICHI , YOSHIOKA MAMORU , KITAURA KOICHI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To execute more accurate air fuel ratio control right after engine start.
SOLUTION: Generation period P is measured from ion current I detected from an inside of a combustion chamber 30 of each cylinder of a multiple cylinder engine 100. Air fuel ratio of each cylinder is detected based on all cylinder fluctuation rate NA operated based on generation period P of all cylinders in operation of the engine 100 from initial explosion to predetermined cycles, and air fuel ratio of each cylinder is detected based on cylinder fluctuation rate N operated based on generation period P of each cylinder in operation of the internal combustion engine after the predetermined cycles (S5).
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：在发动机起动后立即执行更准确的空燃比控制。
解决方案：从多缸发动机100的每个气缸的燃烧室30的内部检测的离子电流I测量发电周期P.基于所有气缸波动率NA操作，检测每个气缸的空燃比发动机100的运转中的所有气缸的发电期间P从初始爆炸到规定的循环，并且基于基于内燃运转中的各气缸的产生期间P操作的气缸变动率N来检测各气缸的空燃比发动机（S5）。版权所有（C）2007，JPO＆INPIT

7. 发明专利

JP2007182845A Air-fuel ratio-determining method for internal combustion engine based on ion current 审中-公开
标题翻译：基于离子电流的内燃机的空燃比比测定方法
公开(公告)号：JP2007182845A
公开(公告)日：2007-07-19
申请号：JP2006002524
申请日：2006-01-10
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 , SATOYA KOICHI , YOSHIOKA MAMORU , KITAURA KOICHI
IPC分类号： F02D45/00 , F02P17/12
CPC分类号： F02D35/021 , F02D37/02 , F02D41/1458
摘要： PROBLEM TO BE SOLVED: To determine the case of an air-fuel ratio not being a stoichiometric air-fuel ratio by setting a reference value larger in proportion to the increase of a delay amount of ignition timing based on a generation period measured in the operating state at the stoichiometric air-fuel ratio, and moreover to determine that the air-fuel ratio is leaner than the stoichiometric air-fuel ratio and that a mixture is lean when the generation period of an ion current is short by delaying.
SOLUTION: In a method of determining the air-fuel ratio in the operating state of the internal combustion engine based on the measured generation period by measuring the generation period in which the ion current generated in a combustion chamber of an internal combustion engine is generated exceeding a predetermined value. The air-fuel ratio is determined to be outside of the stoichiometric air-fuel ratio when the measured generation period is less than the reference value (No in S3). The reference value is set based on the generation period corresponding to the ignition timing when the actual air-fuel ratio is the stoichiometric air-fuel ratio, and the reference value is set larger in proportion to the increase of the delay amount of the ignition timing.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了通过基于测量的发电时段设定与点火正时延迟量的增加成比例的比例更大的基准值来确定不是理论空燃比的空燃比的情况在理论空燃比的操作状态下，并且还确定空燃比比化学计量空燃比更稀，并且当离子电流的产生周期延迟短时，混合物变稀。解决方案：在通过测量在内燃机的燃烧室中产生的离子电流的产生周期的基础上，基于测量的发电周期来确定内燃机的运行状态中的空燃比的方法产生超过预定值。当测量的产生周期小于参考值时，确定空燃比在理论空燃比之外（S3中为否）。基于与实际空燃比为理论空燃比的点火正时相对应的生成周期设定基准值，将基准值设定为与点火正时延迟量的增加成比例。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2007182843A Air-fuel ratio-determining method for internal combustion engine based on ion current 有权
标题翻译：基于离子电流的内燃机的空燃比比测定方法
公开(公告)号：JP2007182843A
公开(公告)日：2007-07-19
申请号：JP2006002522
申请日：2006-01-10
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 , SUGIZAKI SHINOBU , IZUMI MITSUHIRO , KITAURA KOICHI , SATOYA KOICHI , YOSHIOKA MAMORU
IPC分类号： F02D45/00 , F02P17/12
CPC分类号： F02D35/021 , F02D41/06 , F02D41/1458 , F02D41/1495
摘要： PROBLEM TO BE SOLVED: To improve the operation controllability of an internal combustion engine by improving accuracy in lean determination of an air-fuel ratio through emphasis on the influence of dispersion of generating periods to a divisor, thereby detecting early the operating state of the internal combustion engine in which the amount of fuel is to be increased. SOLUTION: In a method of detecting an ion current generated every ignition in a combustion chamber of the internal combustion engine, the generating periods exceeding a decision value set during the generation of the ion current are measured, and the divisor for computing the fluctuation rate of the generating periods of the ion current is computed based on the plurality of measured generating periods. The fluctuation rate of the generating periods of the ion current is computed carrying out weighting in a direction to increase the computed divisor (S5), and the air-fuel ratio is determined to be excessively high when the computed fluctuation rate is a predetermined value or more. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题为了提高内燃机的运行可控性，通过提高空燃比的精确判定精度，通过强调发电周期的分散对除数的影响，从而早日检测运转状态的燃料量将增加的内燃机。解决方案：在检测在内燃机的燃烧室中每次点火产生的离子电流的方法中，测量超过在产生离子电流期间设定的判定值的发生时间，并且计算除数基于多个测定的生成周期来计算离子电流的发生期间的波动率。计算离子电流的生成周期的波动率，在增加计算除数的方向上进行加权（S5），并且当计算的波动率为预定值时，空燃比被确定为过高，或更多。版权所有（C）2007，JPO＆INPIT

9. 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。

10. 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。

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