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1. 发明专利

JP2007198306A Deterioration diagnosis device for linear air-fuel ratio sensor 审中-公开
标题翻译：用于线性空气 - 燃料比传感器的诊断诊断装置
公开(公告)号：JP2007198306A
公开(公告)日：2007-08-09
申请号：JP2006019279
申请日：2006-01-27
申请人： Mazda Motor Corp , マツダ株式会社
发明人： MIYAKOSHI MINORU , TERADA KOICHI , MIYAMOTO KOJI , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00 , F02D41/04 , F02D41/14 , G01N27/26 , G01N27/409
摘要： PROBLEM TO BE SOLVED: To quickly execute highly accurate detection of deterioration while minimizing the degradation of emission during diagnosis as much as possible. SOLUTION: A disturbance generating means is provided for outputting disturbance to a feedback control system when predetermined diagnosing conditions are established. In accordance with the output of the linear air-fuel ratio sensor, at least one of a waste time and a time constant of the linear air-fuel ratio sensor is computed as a determination parameter. The disturbance generating means outputs the disturbance to the feedback control system to correct feedback before the disturbance generating means outputs the disturbance. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：尽可能快地执行高度精确的劣化检测，同时最小化诊断期间的排放降解。解决方案：提供干扰发生装置，用于当建立预定诊断条件时向反馈控制系统输出干扰。根据线性空燃比传感器的输出，计算线性空燃比传感器的浪费时间和时间常数中的至少一个作为确定参数。干扰发生装置在干扰发生装置输出干扰之前将干扰输出到反馈控制系统以校正反馈。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2007192037A Deterioration diagnosing device of linear air-fuel ratio sensor 有权
标题翻译：线性空气燃料比传感器的检测诊断装置
公开(公告)号：JP2007192037A
公开(公告)日：2007-08-02
申请号：JP2006008477
申请日：2006-01-17
申请人： Mazda Motor Corp , マツダ株式会社
发明人： MIYAKOSHI MINORU , TAKEBAYASHI HIROYUKI , TERADA KOICHI , MIYAMOTO KOJI
IPC分类号： F02D45/00 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To prevent emission lowering during diagnosis and quickly detect deterioration with high accuracy.
SOLUTION: A deterioration diagnosing device of a linear air-fuel ratio sensor calculates at least one of an idle time and a time constant of the linear air-fuel sensor as a judgment parameter based on an output from the linear air-fuel ratio sensor in at least either one of fuel cut starting timing when fuel supply is cut with reduction of required load and fuel return starting timing for returning fuel supply due to decrease of engine rotation speed from when the fuel cut is performed.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了防止诊断期间的排放降低，并且以高精度快速检测劣化。解决方案：线性空燃比传感器的劣化诊断装置基于线性空气燃料的输出，计算线性空气燃料传感器的空转时间和时间常数中的至少一个作为判断参数比例传感器在燃料供给被切断并且由于从执行燃料切断而引起的转速降低时返回燃料供给的燃料返回开始时刻的燃料供给切断开始时刻中的至少一个。版权所有（C）2007，JPO＆INPIT

3. 发明专利

JP2007009712A Degradation diagnostic device of linear air-fuel ratio sensor 有权
标题翻译：线性空气燃料比传感器的降解诊断装置
公开(公告)号：JP2007009712A
公开(公告)日：2007-01-18
申请号：JP2005187908
申请日：2005-06-28
申请人： Mazda Motor Corp , マツダ株式会社
发明人： TERADA KOICHI , MIYAMOTO KOJI , MIYAKOSHI MINORU , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To prevent emission degradation at diagnosis as soon as possible, accurately detect one side degradation of a linear air-fuel ratio sensor and correct the deviation of a center air fuel ratio.
SOLUTION: The device outputs a value in proportion to an oxygen concentration in exhaust gas purified by a catalyst of an engine. When a prescribed diagnostic condition is established, an impulse-like disturbance is alternately outputted to a lean side and a rich side in a feedback control system. After the output of the disturbance, a differential value of the output PF of the liner air-fuel ratio sensor SW4 is output. At least one of waste time L and time constant τ of the liner air-fuel ratio sensor is computed as a determining parameter for degradation degradation individually independent on the lean side and rich side. The difference between the determining parameters computed from the disturbances on the lean side and rich side at the degradation diagnosis is computed. On the basis of the computed difference, the deviation of a reference input with respect to a target air-fuel ration is corrected.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题为了尽可能地防止诊断时的排放劣化，可以精确地检测线性空燃比传感器的一侧劣化并校正中心空燃比的偏差。解决方案：该装置输出与发动机的催化剂净化的废气中的氧浓度成比例的值。当建立规定的诊断条件时，在反馈控制系统中将脉冲状干扰交替地输出到稀侧和富侧。输出干扰后，输出衬套空燃比传感器SW4的输出PF的差分值。计算衬套空燃比传感器的浪费时间L和时间常数τ中的至少一个作为分别独立于贫侧和富侧的降解退化的确定参数。计算在劣化诊断时从贫侧和富侧的干扰计算的确定参数之间的差异。基于计算出的差异，校正参考输入相对于目标空燃比的偏差。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2006063853A Deterioration detection device for linear air fuel ratio sensor 有权
标题翻译：线性空气燃料比传感器检测装置
公开(公告)号：JP2006063853A
公开(公告)日：2006-03-09
申请号：JP2004246152
申请日：2004-08-26
申请人： Mazda Motor Corp , マツダ株式会社
发明人： TERADA KOICHI , MIYAKOSHI MINORU , MIYAMOTO KOJI , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00 , F02D41/22
CPC分类号： Y02T10/40
摘要： PROBLEM TO BE SOLVED: To provide a deterioration detection device for a linear air fuel ratio sensor, capable of improving deterioration detection accuracy by providing disturbance for an air fuel ratio at the time of deterioration detection.
SOLUTION: This deterioration detection device for the linear air fuel ratio sensor is provided with an A/F shift means S2 for forcibly shifting A/F; a differentiation means S4 for differentiating an output value of the linear A/F sensor after the shift of the A/F; a peak value detection means S15 for detecting a peak value of output obtained by the differentiation means S4; a threshold value setting means S8 for setting a threshold value on the basis of the peak value; a waste time measuring means S11 for measuring time (waste time) until the differentiation value of the output of the linear A/F sensor exceeds the threshold value after the shift of the A/F by the A/F shift means S2; and a deterioration determination means S18 for determining waste time delay deterioration of the A/F sensor based on the waste time.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：解决问题的方案为了提供线性空燃比传感器的劣化检测装置，能够通过对劣化检测时的空燃比提供干扰来提高劣化检测精度。解决方案：用于线性空燃比传感器的劣化检测装置设有用于强制移动A / F的A / F移位装置S2; 微分装置S4，用于在A / F移位之后对线性A / F传感器的输出值进行微分; 用于检测由微分装置S4获得的输出的峰值的峰值检测装置S15; 阈值设定装置S8，用于根据峰值设定阈值; 在由A / F移位装置S2移位A / F之后，直到线性A / F传感器的输出的微分值超过阈值的时间（浪费时间）的浪费时间测量装置S11; 以及劣化确定装置S18，用于基于浪费时间确定A / F传感器的浪费时间延迟恶化。版权所有（C）2006，JPO＆NCIPI

5. 发明专利

JP2004003430A Diagnostic apparatus for engine 有权
公开(公告)号：JP2004003430A
公开(公告)日：2004-01-08
申请号：JP2002363793
申请日：2002-12-16
申请人： Mazda Motor Corp , マツダ株式会社
发明人： TAKEBAYASHI HIROYUKI , ABE HIROHIDE , TERADA KOICHI
IPC分类号： F02D43/00 , F01N3/18 , F01N3/20 , F01N3/24 , F01N11/00 , F02B75/12 , F02D41/04 , F02D41/06
CPC分类号： F02D41/064 , F01N3/2013 , F01N11/002 , F01N2550/00 , F02B2075/125 , F02D41/047 , F02D41/1446 , F02D41/187 , F02D2041/389 , F02D2200/0404 , F02D2200/0614 , F02D2200/0802 , Y02T10/123 , Y02T10/26 , Y02T10/47
摘要： PROBLEM TO BE SOLVED: To provide a simple means for easily diagnosing any fault of a cold-state emission-reducing strategy to enhance the emission performance by activating an exhaust emission control catalyst or promoting the warm-up. SOLUTION: In an engine to perform the cold-state emission-reducing strategy during the cold start, any fault of the cold-state emission-reducing strategy is diagnosed by a control unit C. In this fault diagnosis, if the integrated value of the fuel injection is larger than a predetermined faulty determination threshold, the cold-state emission-reducing strategy is determined to be faulty. For example, any fault of the cold-state emission-reducing strategy is detected with high accuracy by a simple configuration that the cumulative amount of the injection pulse width of an injector or the cumulative amount of the fuel flow rate is operated for a predetermined cumulating time period after the cold start, and compared with the faulty determination threshold. COPYRIGHT: (C)2004,JPO

6. 发明专利

JP2008223516A Failure diagnosis device of exhaust gas recirculation device for engine 审中-公开
标题翻译：用于发动机的排气回收装置故障诊断装置
公开(公告)号：JP2008223516A
公开(公告)日：2008-09-25
申请号：JP2007059876
申请日：2007-03-09
申请人： Mazda Motor Corp , マツダ株式会社
发明人： MIYAMOTO KOJI , TERADA KOICHI , FURUICHI NOBUYUKI , KIHARA TOMOYUKI
IPC分类号： F02M25/07
CPC分类号： Y02T10/121
摘要： PROBLEM TO BE SOLVED: To provide a means capable of easily and certainly performing diagnosis of failure of an exhaust gas recirculation device for an engine. SOLUTION: The engine 1 is provided with EGR passage 25 for communicating an exhaust passage 9 with a surge tank 17; and the exhaust gas recirculation device having EGR valve 26 interposed in the EGR passage 25. A control unit C presumes an intake pressure (presumed intake pressure) making decision that circulation of EGR gas is not generated based on the detected air amount of an air flow sensor 15. Further, the presumed intake pressure is compared with an intake pressure actually measured by an intake pressure sensor 18 (actual intake pressure) and if difference (intake pressure difference) of the presumed intake pressure and the actual intake pressure is a predetermined threshold value or higher, it is determined that the exhaust gas circulation device is normal. Further, the control unit C makes the difference of the presumed intake pressure and the actual intake pressure as a learning value and determination of failure is performed while reflecting the learning value. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供能够容易且肯定地执行用于发动机的废气再循环装置的故障的诊断的装置。解决方案：发动机1设有用于使排气通道9与缓冲罐17连通的EGR通道25; 并且排气再循环装置具有插入在EGR通路25中的EGR阀26.控制单元C设定根据检测到的空气流量的空气量判定不产生EGR气体的循环的进气压力（推定进气压力）传感器15.此外，将推定的进气压力与由进气压力传感器18实际测量的进气压力（实际进气压力）进行比较，并且如果推定的进气压力和实际进气压力的差值（进气压力差）为预定阈值值以上，判断为排气循环装置正常。此外，控制单元C使假设的进气压力和实际进气压力的差作为学习值，并且在反映学习值的同时执行故障的确定。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2007009711A Degradation diagnostic device of linear air-fuel ratio sensor 有权
标题翻译：线性空气燃料比传感器的降解诊断装置
公开(公告)号：JP2007009711A
公开(公告)日：2007-01-18
申请号：JP2005187905
申请日：2005-06-28
申请人： Mazda Motor Corp , マツダ株式会社
发明人： TERADA KOICHI , MIYAMOTO KOJI , MIYAKOSHI MINORU , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To provide a degradation diagnostic device of a linear air-fuel ratio sensor which can analyze degradation status in detail.
SOLUTION: A liner air-fuel ratio sensor feeds back to a feedback control system the output PF in proportion to an oxygen concentration in exhaust gas so that feedback control is executed. When a prescribed diagnostic condition is established, an impulse-like disturbance is output to the feedback control system. After the output of the disturbance, a differential value D
O2 of the output PF of the liner air-fuel ratio sensor SW4 is computed. At least one of waste time and time constant is computed as a determining parameter for degradation determination. The establishment of the diagnostic condition leads to reduction in gain of the main control element. As a result, the detailed analysis of the degradation status can be materialized. Although the disturbance is outputted, the divergence of the feedback control system can be prevented, which allows the stability to be maintained.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种能够详细分析劣化状态的线性空燃比传感器的劣化诊断装置。解决方案：衬管空燃比传感器将反馈控制系统与排气中的氧浓度成比例地反馈输出PF，从而执行反馈控制。当建立规定的诊断条件时，向反馈控制系统输出脉冲状干扰。在干扰输出之后，计算衬套空燃比传感器SW4的输出PF的微分值D O2 。计算废物时间和时间常数中的至少一个作为劣化确定的确定参数。诊断条件的建立导致主控元件的增益降低。因此，可以实现对退化状态的详细分析。尽管输出干扰，但是可以防止反馈控制系统的发散，这样可以保持稳定性。版权所有（C）2007，JPO＆INPIT

8. 发明专利

JP2007187129A Degradation diagnosing device for linear air-fuel ratio sensor 有权
标题翻译：用于线性空气 - 燃料比传感器的降解诊断装置
公开(公告)号：JP2007187129A
公开(公告)日：2007-07-26
申请号：JP2006007488
申请日：2006-01-16
申请人： Mazda Motor Corp , マツダ株式会社
发明人： MIYAKOSHI MINORU , TERADA KOICHI , MIYAMOTO KOJI , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00 , F02D41/14
摘要： PROBLEM TO BE SOLVED: To minimize emission degradation during diagnosis, and to promptly carry out accurate degradation detection.
SOLUTION: A disturbance is forcibly outputted without changing a target air-fuel ratio, and a dead time L and a time constant τ of the linear air-fuel ratio sensor are calculated as a "dead time + first-order time-lag" from a detected value. In the calculation, a time constant time-lag amount τ
dy is detected beforehand, and on the basis of the time constant time-lag amount τ
dy , the calculated dead time L
pre is corrected. On the other hand, at the point of finishing calculation of the dead time L
pre , generation of the disturbance is reset.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：为了尽量减少诊断过程中的排放退化，并及时进行精确的降解检测。解决方案：在不改变目标空燃比的情况下强制输出扰动，并且将线性空燃比传感器的死区时间L和时间常数τ计算为“死区时间+一次时间 - 滞后“。在该计算中，预先检测时间常数时滞量τ dy ，根据时间常数时滞量τ dy ，计算死区时间 L pre 被校正。另一方面，在停止时间L pre 的计算时，重置干扰的产生。版权所有（C）2007，JPO＆INPIT

9. 发明专利

JP2007009713A Degrading diagnosing device of linear air-fuel ratio sensor 有权
标题翻译：线性空气 - 燃料比传感器的降解诊断装置
公开(公告)号：JP2007009713A
公开(公告)日：2007-01-18
申请号：JP2005187912
申请日：2005-06-28
申请人： Mazda Motor Corp , マツダ株式会社
发明人： MIYAKOSHI MINORU , MIYAMOTO KOJI , TERADA KOICHI , TAKEBAYASHI HIROYUKI
IPC分类号： F02D45/00
摘要： PROBLEM TO BE SOLVED: To detect degrading with a high accuracy by maximally preventing emission from being lowered in diagnosis even if a one side degrading occurs on the linear air-fuel ratio sensor.
SOLUTION: Inpulse disturbances LR and RL are outputted by a predetermined times to a feedback control system 110 by alternately changing an air-fuel ratio between a rich side and a lean side when the degrading of the linear air-fuel ratio sensor switch 4 of an engine 10 is diagnosed. When the second disturbances LR and RL and subsequent are output, the next disturbances LR and RL are set with a target time integration value I
T offsetting the historical time integration value I
R of the previous disturbances LR and RL when the second disturbances LR and RL and subsequent are output. Since the disturbances LR and RL are neutralized between the rich side and the lean side in total, the adverse effect of the degrading on the target air-fuel ratio can be minimized.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：即使在线性空燃比传感器上发生一侧劣化，也可以通过最大限度地防止排放降低诊断来高精度地检测降解。解决方案：当线性空燃比传感器开关的降级时，脉冲扰动LR和RL通过交替地改变富侧和稀侧之间的空燃比，以预定的次数输出到反馈控制系统110 诊断发动机10的4。当输出第二干扰LR和RL及其后续时，下一个干扰LR和RL被设定为与历史时间积分值I SB SB相抵消的目标时间积分值I T 的第二干扰LR和RL及其后的输出。由于干扰LR和RL总共在富侧和贫侧之间被中和，所以可降低对目标空燃比的不利影响。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2007009710A Deterioration diagnostic device for linear air-fuel ratio sensor 有权
标题翻译：用于线性空气 - 燃料比传感器的检测诊断装置
公开(公告)号：JP2007009710A
公开(公告)日：2007-01-18
申请号：JP2005187899
申请日：2005-06-28
申请人： Mazda Motor Corp , マツダ株式会社
发明人： TAKEBAYASHI HIROYUKI , MIYAMOTO KOJI , TERADA KOICHI , MIYAKOSHI MINORU
IPC分类号： F02D45/00 , F02D41/22
CPC分类号： Y02T10/40
摘要： PROBLEM TO BE SOLVED: To certainly detect one-sided deterioration of a linear air-fuel ratio sensor.
SOLUTION: When a predetermined diagnostic condition is satisfied, impulse disturbances are alternately output to the lean and rich sides of a feedback control system a predetermined number of times, and determining parameter T
LR , T
RL for deterioration determination are calculated based on the differential value of output of the linear air-fuel ratio sensor. Next, deterioration of the linear air-fuel ratio sensor is determined based on the difference DF
T and sum AD
T between/of rich side determining parameter T
LR , T
RL and lean side determining parameter T
RL . The difference DF
T and sum AD
T are multiplied respectively by corresponding weighting factors α, β, and an evaluation value ES is calculated. The deterioration of the linear air-fuel ratio sensor is determined based on the evaluation value ES, thereby, so-called one-sided deterioration is detected.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：确定地检测线性空燃比传感器的单侧劣化。解决方案：当满足预定的诊断条件时，将脉冲扰动交替地输出到反馈控制系统的稀薄和丰富的一侧预定次数，并且确定参数T LR 基于线性空燃比传感器的输出的微分值来计算用于劣化判定的SB> RL 。接下来，基于丰富侧确定参数T LR 之间的差DF T＆lt; SB＆lt; SB＆gt;和＆lt; SB＆gt; / SB>，T RL 和偏侧确定参数T RL 。差分DF T 和和AD T 分别乘以相应的加权因子α，β，并计算评估值ES。基于评估值ES确定线性空燃比传感器的劣化，从而检测所谓的单侧劣化。版权所有（C）2007，JPO＆INPIT

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