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1.发明授权
公开(公告)号：US5672817A
公开(公告)日：1997-09-30
申请号：US574211
申请日：1995-12-13
CPC分类号： F02D41/123 , F02D41/1495 , F02D41/1456
摘要： A self-diagnostic apparatus of an air-fuel ratio control system of an internal combustion engine performs processes of starting the diagnostic process as the fuel-cut is started, reading and storing a sensor output at the start of the fuel-cut and counting an elapsed time after the start of the fuel-cut by actuating a timer, reading a time until when the sensor output rises from the start of the fuel-cut from the count value of the timer, calculating a rate of change of the sensor output and comparing the calculated rate of change with an abnormality determining value. When the rate of change is large, the response characteristic of the sensor is normal. When it is small, the response characteristic of the sensor is abnormal (degraded), so that the abnormality of the sensor is stored in a memory and an alarm lamp is lighted to inform a driver of the abnormality of the sensor.
摘要翻译： 内燃机的空燃比控制系统的自诊断装置进行燃料切断开始时开始诊断处理的处理，在燃料切断开始时读取并存储传感器输出并对其进行计数 通过启动定时器开始燃料切断后的经过时间，读取一段时间，直到传感器输出从燃料切断开始从计时器的计数值开始上升，计算传感器输出的变化率， 将计算出的变化率与异常判定值进行比较。 当变化率大时，传感器的响应特性正常。 当传感器的响应特性小时，传感器的响应特性异常（劣化），将传感器的异常存储在存储器中，并且点亮报警灯以通知驾驶员传感器的异常。
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公开(公告)号：US20060277907A1
公开(公告)日：2006-12-14
申请号：US11447036
申请日：2006-06-06
申请人： Kuniaki Ueda , Yasuo Sagisaka , Masahiko Yamaguchi , Yasuo Mukai
发明人： Kuniaki Ueda , Yasuo Sagisaka , Masahiko Yamaguchi , Yasuo Mukai
IPC分类号： F02D23/00
CPC分类号： F02D23/00 , F02B29/0406 , F02B37/16 , F02B37/18 , F02B39/16 , F02D41/0007 , F02D41/042 , F02D41/062 , F02D41/222 , F02D2200/0406 , F02D2200/703 , Y02T10/144 , Y02T10/40
摘要： A malfunction detection apparatus is disclosed for a forced induction system. The system includes a compressor provided on an upstream side of a throttle valve in an intake passage of an engine, an upstream intake pressure sensor that detects intake pressure between the compressor and the throttle valve, and an atmospheric pressure sensor that detects atmospheric pressure. The malfunction detection apparatus includes a malfunction detection program that makes a comparison between the atmospheric pressure detected by the atmospheric pressure sensor and the upstream intake pressure detected by the upstream intake pressure sensor. The comparison is made in an operating state of the forced induction system in which the compressor compresses an amount of air that is approximately equal to or less than a predetermined amount to thereby determine whether the upstream pressure sensor has a malfunction.
摘要翻译： 公开了一种用于强制感应系统的故障检测装置。 该系统包括设置在发动机的进气通道中的节流阀的上游侧的压缩机，检测压缩机和节流阀之间的进气压力的上游侧进气压力传感器和检测大气压的大气压传感器。 故障检测装置包括故障检测程序，其将由大气压传感器检测到的大气压与由上游进气压力传感器检测的上游进气压力进行比较。 在强制感应系统的运行状态下进行比较，其中压缩机压缩大约等于或小于预定量的空气量，从而确定上游压力传感器是否具有故障。
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3.发明申请公开(公告)号：US20060248889A1
公开(公告)日：2006-11-09
申请号：US11478729
申请日：2006-07-03
申请人： Yasuo Sagisaka , Yasuo Mukai , Masahiko Yamaguchi , Kuniaki Ueda
发明人： Yasuo Sagisaka , Yasuo Mukai , Masahiko Yamaguchi , Kuniaki Ueda
CPC分类号： F02B37/18 , F02B29/04 , F02B39/16 , F02D41/221 , Y02T10/144
摘要： An opening of a waste gate vale is adjusted to control an actual supercharging pressure of intake air. Abnormality in a changing characteristic of the actual supercharging pressure relative to a change in a TCV control duty value can be detected. When an engine is in a steady operation condition, the TCV control duty value is forcibly changed repeatedly by a predetermined amount from 0% to 100%. A deviation between a target supercharging pressure corresponding to the TCV control duty value and an actual supercharging pressure is calculated each time the TCV control duty value is changed by the predetermined amount. This deviation is compared with an abnormality determination value to determine presence/absence of the abnormality in the changing characteristic of the actual supercharging pressure relative to the change in the TCV control duty value.
摘要翻译： 废气门口的开口被调节以控制进气的实际增压压力。 可以检测到实际增压压力相对于TCV控制占空比变化的变化特性的异常。 当发动机处于稳定运行状态时，TCV控制占空比值被重复地从0％重复变化到100％。 每当TCV控制占空比值改变预定量时，计算与TCV控制占空比值相对应的目标增压压力与实际增压压力之间的偏差。 将该偏差与异常判定值进行比较，以确定实际增压压力相对于TCV控制占空比值的变化的变化特性中的异常的存在/不存在。
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4.发明授权公开(公告)号：US07677227B2
公开(公告)日：2010-03-16
申请号：US11478729
申请日：2006-07-03
申请人： Yasuo Sagisaka , Yasuo Mukai , Masahiko Yamaguchi , Kuniaki Ueda
发明人： Yasuo Sagisaka , Yasuo Mukai , Masahiko Yamaguchi , Kuniaki Ueda
IPC分类号： F02B33/00
CPC分类号： F02B37/18 , F02B29/04 , F02B39/16 , F02D41/221 , Y02T10/144
摘要： An opening of a waste gate vale is adjusted to control an actual supercharging pressure of intake air. Abnormality in a changing characteristic of the actual supercharging pressure relative to a change in a TCV control duty value can be detected. When an engine is in a steady operation condition, the TCV control duty value is forcibly changed repeatedly by a predetermined amount from 0% to 100%. A deviation between a target supercharging pressure corresponding to the TCV control duty value and an actual supercharging pressure is calculated each time the TCV control duty value is changed by the predetermined amount. This deviation is compared with an abnormality determination value to determine presence/absence of the abnormality in the changing characteristic of the actual supercharging pressure relative to the change in the TCV control duty value.
摘要翻译： 废气门口的开口被调节以控制进气的实际增压压力。 可以检测到实际增压压力相对于TCV控制占空比变化的变化特性的异常。 当发动机处于稳定运行状态时，TCV控制占空比值被重复地从0％重复变化到100％。 每当TCV控制占空比值改变预定量时，计算与TCV控制占空比值相对应的目标增压压力与实际增压压力之间的偏差。 将该偏差与异常判定值进行比较，以确定实际增压压力相对于TCV控制占空比值的变化的变化特性中的异常的存在/不存在。
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公开(公告)号：US07380448B2
公开(公告)日：2008-06-03
申请号：US11447036
申请日：2006-06-06
申请人： Kuniaki Ueda , Yasuo Sagisaka , Masahiko Yamaguchi , Yasuo Mukai
发明人： Kuniaki Ueda , Yasuo Sagisaka , Masahiko Yamaguchi , Yasuo Mukai
IPC分类号： G01M15/00
CPC分类号： F02D23/00 , F02B29/0406 , F02B37/16 , F02B37/18 , F02B39/16 , F02D41/0007 , F02D41/042 , F02D41/062 , F02D41/222 , F02D2200/0406 , F02D2200/703 , Y02T10/144 , Y02T10/40
摘要： A malfunction detection apparatus is disclosed for a forced induction system. The system includes a compressor provided on an upstream side of a throttle valve in an intake passage of an engine, an upstream intake pressure sensor that detects intake pressure between the compressor and the throttle valve, and an atmospheric pressure sensor that detects atmospheric pressure. The malfunction detection apparatus includes a malfunction detection program that makes a comparison between the atmospheric pressure detected by the atmospheric pressure sensor and the upstream intake pressure detected by the upstream intake pressure sensor. The comparison is made in an operating state of the forced induction system in which the compressor compresses an amount of air that is approximately equal to or less than a predetermined amount to thereby determine whether the upstream pressure sensor has a malfunction.
摘要翻译： 公开了一种用于强制感应系统的故障检测装置。 该系统包括设置在发动机的进气通道中的节流阀的上游侧的压缩机，检测压缩机和节流阀之间的进气压力的上游侧进气压力传感器和检测大气压的大气压传感器。 故障检测装置包括故障检测程序，其将由大气压传感器检测到的大气压与由上游进气压力传感器检测的上游进气压力进行比较。 在强制感应系统的运行状态下进行比较，其中压缩机压缩大约等于或小于预定量的空气量，从而确定上游压力传感器是否具有故障。
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公开(公告)号：US6082337A
公开(公告)日：2000-07-04
申请号：US113281
申请日：1998-07-10
申请人： Takeshi Fujimoto , Masaaki Nakayama , Yasuo Mukai , Hisayo Dohta , Keiji Wakahara , Junya Morikawa , Makoto Miwa
发明人： Takeshi Fujimoto , Masaaki Nakayama , Yasuo Mukai , Hisayo Dohta , Keiji Wakahara , Junya Morikawa , Makoto Miwa
CPC分类号： F02M25/0809
摘要： When a diagnosis execution condition is established, a canister closure valve is closed, thereafter, a purge control valve is opened, a purge control valve is closed in a state where negative pressure is introduced into an evaporated gas system to thereby maintain the evaporated gas system in a hermetically-sealed state and the hermetically-sealed state is continued until abnormality diagnosis is finished. Time period for maintaining the evaporated gas system in the hermetically-sealed state is divided into three time periods of a pressure change determining time period at a first time, an awaiting time period and a pressure change determining time period at a second time. After determining a pressure change amount DPT1 of the evaporated gas system in the pressure change determining time period at the first time, the evaporated gas system is successively maintained in the hermetically-sealed state, after the predetermined awaiting time period has elapsed, the pressure change determination at the second time is carried out by which a pressure change amount DPT2 of the evaporated gas system is determined. Further, presence or absence of leakage of the evaporated gas system is diagnosed by comparing the pressure change amount DPT1 at the first time with the pressure change amount DPT2 at the second time.
摘要翻译： 当建立诊断执行条件时，关闭罐关闭阀，此后打开净化控制阀，在将负压引入蒸发气体系统中的状态下关闭净化控制阀，从而保持蒸发气体系统 在气密密封状态下，气密密封状态持续直到异常诊断完成。 用于将蒸发气体系统保持在气密密封状态的时间段被分为在第一时间的压力变化确定时间段，等待时间段和第二时间的压力变化确定时间段的三个时间段。 在第一次在压力变化确定时间段内确定蒸发气体系统的压力变化量DPT1之后，蒸发气体系统依次保持在气密密封状态，在经过预定的等待时间之后，压力变化 进行第二次的测定，确定蒸发气体系统的压力变化量DPT2。 此外，通过将第一次的压力变化量DPT1与第二次的压力变化量DPT2进行比较来诊断蒸发气体系统的泄漏的存在或不存在。
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公开(公告)号：US5412942A
公开(公告)日：1995-05-09
申请号：US112209
申请日：1993-08-26
申请人： Yasuo Mukai , Yasuhito Takasu , Masaaki Nakayama
发明人： Yasuo Mukai , Yasuhito Takasu , Masaaki Nakayama
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A catalytic converter deterioration detecting system for an engine derives a low-frequency component in an output of a downstream-side oxygen sensor provided downstream of a catalytic converter. The system detects deterioration of the catalytic converter based on the low-frequency component, such as, an amplitude of the low-frequency component or a period of the low-frequency component. For higher detection accuracy, an amplitude of a high-frequency component in the output of the downstream-side oxygen sensor is additionally used for detecting deterioration of the catalytic converter. Specifically, the system determines that the catalytic converter is deteriorated when the low-frequency amplitude is smaller than a given value and the high-frequency amplitude is greater than a given value.
摘要翻译： 用于发动机的催化转化器劣化检测系统导出设置在催化转化器下游的下游侧氧传感器的输出中的低频分量。 该系统基于低频分量，例如低频分量的振幅或低频分量的周期来检测催化转化器的劣化。 为了更高的检测精度，另外使用下游侧氧传感器的输出中的高频分量的振幅来检测催化转化器的劣化。 具体地，当低频振幅小于给定值并且高频振幅大于给定值时，系统确定催化转换器劣化。
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8.发明授权
公开(公告)号：US6023651A
公开(公告)日：2000-02-08
申请号：US953372
申请日：1997-10-17
申请人： Masaaki Nakayama , Yasuo Mukai
发明人： Masaaki Nakayama , Yasuo Mukai
CPC分类号： G01M15/11 , F02D41/1498 , F02D2200/1015
摘要： To accurately detect patterns of misfires in an internal combustion engine, misfire is detected by calculating angular speed variation responsive to crankshaft rotation and comparing that with a predetermined misfire reference value. The calculated angular speed variation includes a first elementary term showing rotational variation of two different cylinders and a second correction term showing the rotational variation of the same cylinder separated by one combustion cycle. The elementary term shows how much rotational variation is between the cylinder n and the previous cylinder n-1 due to the occurrence of misfire. In contrast, the correction term shows how much error in the rotational variation is caused in same cylinder (e.g., mainly when accelerating or decelerating).
摘要翻译： 为了精确地检测内燃机中的失火模式，通过计算响应于曲轴旋转的角速度变化并将其与预定的失火参考值进行比较来检测失火。 所计算的角速度变化包括表示两个不同气缸的旋转变化的第一个初级项和表示由一个燃烧循环分开的同一气缸的旋转变化的第二校正项。 基本项表示由于发生失火而导致气缸n与前一气缸n-1之间的旋转变化量。 相比之下，校正项表示在同一气缸中（例如，主要是加速或减速时）在旋转变化中引起多少误差。
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9.发明授权公开(公告)号：US06295807B1
公开(公告)日：2001-10-02
申请号：US09564534
申请日：2000-05-04
申请人： Hisayo Douta , Masaaki Nakayama , Yasuo Mukai
发明人： Hisayo Douta , Masaaki Nakayama , Yasuo Mukai
IPC分类号： F01N300
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： In a system for detecting deterioration of an exhaust catalyst, when a catalyst temperature exceeds 150° C., the changing widths of the output voltage of an oxygen sensor downstream of the catalyst are integrated for a predetermined sampling period to determine data &Sgr;V reflecting the amount of purified gas component, and the deviation of the air/fuel ratio detected by an air/fuel ratio sensor upstream of the catalyst, and a target A/F and an exhaust gas flow rate or an intake flow rate are multiplied so that data &Sgr;A/F&Circlesolid;Q of the fluctuation of the gas component flowing into the catalyst are determined by integrating the multiplied values. At the instant when the catalyst temperature reaches 550° C., the data &Sgr;V, as integrated till then, are compared with a deterioration determining value, as set according to the data &Sgr;A/F&Circlesolid;Q, to determine whether the catalyst is deteriorated.
摘要翻译： 在用于检测排气催化剂的劣化的系统中，当催化剂温度超过150℃时，将催化剂下游的氧传感器的输出电压的变化宽度整合为预定的采样周期，以确定反映量 的净化气体成分，并且由催化剂上游的空气/燃料比传感器检测到的空气/燃料比的偏差和目标A / F和排气流量或进气流量相乘，使得数据SIGMAA / F＆Circlef;流入催化剂的气体成分的波动的Q通过对相乘值进行积分来确定。 在催化剂温度达到550℃的时刻，将与之结合的数据SIGMAV与根据数据SIGMAA / F＆Circlef; Q设定的劣化判定值进行比较，以确定催化剂是否劣化。
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公开(公告)号：US06289880B1
公开(公告)日：2001-09-18
申请号：US09576224
申请日：2000-05-22
IPC分类号： F02M3704
CPC分类号： F02M25/0809
摘要： A fuel vapor purge system has an apparatus for detecting leakage. The apparatus detects leakage based on a detected pressure in the tank. A remaining amount of fuel indicating a capacity of air in the tank and an introducing time of a negative pressure indicating an evaporated amount of fuel are taken into consideration of a detecting process. Therefore, the leakage detection is carried out accurately by compensating influences on the detected pressure by the remaining amount of fuel and an evaporated amount of fuel.
摘要翻译： 燃料蒸气吹扫系统具有用于检测泄漏的装置。 该装置基于罐中检测到的压力来检测泄漏。 考虑到检测处理考虑了表示罐内的空气容量的剩余量的燃料和表示燃料量蒸发量的负压的导入时间。 因此，通过补偿对燃料剩余量和燃料量的蒸发量对检测压力的影响，能够准确地进行泄漏检测。
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