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1. 发明授权

US6085706A Valve timing control apparatus for internal combustion engine 有权
标题翻译：内燃机气门正时控制装置
公开(公告)号：US6085706A
公开(公告)日：2000-07-11
申请号：US418571
申请日：1999-10-15
申请人： Hisashi Kadowaki , Akimoto Watanabe , Keiji Wakahara , Junya Morikawa
发明人： Hisashi Kadowaki , Akimoto Watanabe , Keiji Wakahara , Junya Morikawa
IPC分类号： F01L1/344 , F02D13/02 , F02D41/22
CPC分类号： F02D13/0207 , F01L1/344 , F02D41/221 , F01L2001/0537 , F01L2201/00 , F02B2275/18 , F02D13/0226 , F02D13/0249 , F02D2041/001 , Y02T10/18 , Y02T10/40
摘要： A valve timing control apparatus for an internal combustion engine includes a variable valve timing control mechanism of a hydraulic type which is provided in a drive force transmission arrangement for transmitting a drive force from a driving shaft to a driven shaft for actuating one of an engine-cylinder inlet valve and an engine-cylinder outlet valve, and which can relatively rotate one of the driving shaft and the driven shaft in a predetermined angular range. A detecting device operates for detecting a condition in which air enters hydraulic working fluid in the variable valve timing control mechanism. A trouble diagnosis device operates for implementing a trouble diagnosis on the variable valve timing control mechanism. An inhibiting device operates for inhibiting the trouble diagnosis implemented by the trouble diagnosis device when the detecting device detects the condition in which air enters hydraulic working fluid in the variable valve timing control mechanism.
摘要翻译：一种用于内燃机的气门正时控制装置，包括液压式的可变气门正时控制机构，该可变气门正时控制机构设置在用于将驱动力从驱动轴传递到从动轴的驱动力传递装置中，气缸进气阀和发动机气缸出口阀，并且可以将预定角度范围内的驱动轴和从动轴中的一个相对旋转。检测装置用于检测空气进入可变气门正时控制机构中的液压工作流体的状态。故障诊断装置用于对可变气门正时控制机构进行故障诊断。当检测装置检测到空气进入可变气门正时控制机构中的液压工作流体的状态时，禁止装置用于禁止故障诊断装置执行的故障诊断。

2. 发明授权

US6047674A Valve timing control apparatus for internal combustion engine 有权
公开(公告)号：US6047674A
公开(公告)日：2000-04-11
申请号：US150029
申请日：1998-09-09
申请人： Hisashi Kadowaki , Keiji Wakahara , Junya Morikawa
发明人： Hisashi Kadowaki , Keiji Wakahara , Junya Morikawa
IPC分类号： F01L1/344 , F02D13/02 , F02D41/22
CPC分类号： F02D13/0207 , F01L1/344 , F02D41/221 , F01L2001/0537 , F01L2201/00 , F02B2275/18 , F02D13/0226 , F02D13/0249 , F02D2041/001 , Y02T10/18 , Y02T10/40
摘要： A valve timing control apparatus for an internal combustion engine includes a variable valve timing control mechanism of a hydraulic type which is provided in a drive force transmission arrangement for transmitting a drive force from a driving shaft to a driven shaft for actuating one of an engine-cylinder inlet valve and an engine-cylinder outlet valve, and which can relatively rotate one of the driving shaft and the driven shaft in a predetermined angular range. A detecting device operates for detecting a condition in which air enters hydraulic working fluid in the variable valve timing control mechanism. A trouble diagnosis device operates for implementing a trouble diagnosis on the variable valve timing control mechanism. An inhibiting device operates for inhibiting the trouble diagnosis implemented by the trouble diagnosis device when the detecting device detects the condition in which air enters hydraulic working fluid in the variable valve timing control mechanism.

3. 发明授权

US6148803A Leakage diagnosing device for fuel evaporated gas purge system 有权
标题翻译：燃油蒸发气体净化系统泄漏诊断装置
公开(公告)号：US6148803A
公开(公告)日：2000-11-21
申请号：US204141
申请日：1998-12-03
申请人： Yoshihiro Majima , Takeshi Fujimoto , Keiji Wakahara , Junya Morikawa , Shigenori Isomura , Makoto Miwa
发明人： Yoshihiro Majima , Takeshi Fujimoto , Keiji Wakahara , Junya Morikawa , Shigenori Isomura , Makoto Miwa
IPC分类号： F02M25/08 , F02M33/00
CPC分类号： F02M25/0809
摘要： A leakage diagnosing apparatus for an evaporated gas purge system, which executes purge system leakage diagnosis based on a detected pressure change amount and an introduced pressure which is introduced into a part of the purge system including at least a fuel tank and a canister. The detected pressure change amount is obtained by detecting pressure in the part of the purge system after such part of the purge system is hermetically sealed. Accordingly, the reliability of the leakage diagnosis is improved because an erroneous diagnosis caused by the introduced pressure is prevented. The detected pressure change amount may be compensated based on the introduced pressure into the sealed gas purge system. Accordingly, an erroneous leakage determination is prevented, and the reliability of leakage determination is improved.
摘要翻译：一种用于蒸发气体净化系统的泄漏诊断装置，其基于检测到的压力变化量和引入至少包括燃料箱和罐的吹扫系统的一部分的引入压力来执行清洗系统泄漏诊断。检测到的压力变化量通过在清洗系统的这一部分气密密封之后检测吹扫系统的部分中的压力来获得。因此，由于引入的压力引起的错误诊断被防止，所以提高了泄漏诊断的可靠性。检测到的压力变化量可以基于引入到密封气体净化系统中的压力来补偿。因此，防止了错误的泄漏判定，提高了泄漏判定的可靠性。

4. 发明授权

US6082337A Abnormality detection apparatus for preventing fuel gas emission 失效
标题翻译：用于防止燃料气体排放的异常检测装置
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
IPC分类号： F02M25/08 , F02M37/04
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。

5. 发明授权

US07797924B2 Abnormality diagnosis apparatus for secondary air supply system of engine 有权
标题翻译：发动机二次供气系统异常诊断装置
公开(公告)号：US07797924B2
公开(公告)日：2010-09-21
申请号：US11261588
申请日：2005-10-31
申请人： Keiji Wakahara , Masahiko Yamaguchi , Satoshi Kodo
发明人： Keiji Wakahara , Masahiko Yamaguchi , Satoshi Kodo
IPC分类号： F01N3/00
CPC分类号： F01N11/00 , F01N3/22 , F01N2550/14 , F01N2560/07 , F01N2900/0422 , Y02T10/47
摘要： An abnormality diagnosis apparatus is used for a secondary air supply system for an internal combustion engine. The system includes an air pump for supplying secondary air into an upstream of a catalyst in an exhaust gas passage of the internal combustion engine. A secondary air detecting means detects secondary air information. An abnormality diagnosis means performs an abnormality diagnosis of the secondary air supply system in accordance with the secondary air information detected using the secondary air detecting means. A temperature information determining means performs at least one of detection and estimation of air pump temperature information. A condition setting means performs at least one of setting and compensating a condition for evaluating normality and abnormality of the secondary air supply system in accordance with the air pump temperature information.
摘要翻译：异常诊断装置用于内燃机的二次空气供给系统。该系统包括用于将二次空气供给到内燃机的排气通道中的催化剂上游的空气泵。二次空气检测装置检测二次空气信息。异常诊断装置根据使用二次空气检测装置检测到的二次空气信息进行二次空气供给系统的异常诊断。温度信息确定装置执行气泵温度信息的检测和估计中的至少一个。条件设定装置根据气泵温度信息进行设定和补偿用于评价二次空气供给系统的正常和异常的条件中的至少一个。

6. 发明申请

US20080110447A1 ENGINE CONTROL APPARATUS 失效
标题翻译：发动机控制装置
公开(公告)号：US20080110447A1
公开(公告)日：2008-05-15
申请号：US11929293
申请日：2007-10-30
申请人： Keiji Wakahara , Takeshi Fujimoto
发明人： Keiji Wakahara , Takeshi Fujimoto
IPC分类号： F02D41/30
CPC分类号： F02D41/22 , F02D41/1438 , F02D41/1454 , F02D41/1495 , Y02T10/40
摘要： An engine control apparatus feedback-controls a mixture air-fuel ratio of air-fuel mixture supplied to each cylinder of the engine based on an exhaust air-fuel ratio detected by an air-fuel ratio sensor. The control apparatus further calculates an exhaust air-fuel ratio change rate at every predetermined interval and integrates an absolute value of the exhaust air-fuel ratio change rate. The control apparatus determines an abnormality in any one of engine cylinders when an integration value of the exhaust air-fuel ratio change rate exceeds a predetermined reference value.
摘要翻译：发动机控制装置基于由空燃比传感器检测的排气空燃比反馈控制供给到发动机的各气缸的空燃混合气的混合空燃比。控制装置进一步计算出每隔预定间隔的排气空燃比变化率，并对排气空燃比变化率的绝对值进行积分。当排气空燃比变化率的积分值超过规定的基准值时，控制装置判定发动机气缸中的任意一个的异常。

7. 发明授权

US07316223B2 Device for detecting malfunction in evaporated gas purging system 有权
标题翻译：用于检测蒸发气体净化系统故障的装置
公开(公告)号：US07316223B2
公开(公告)日：2008-01-08
申请号：US11435838
申请日：2006-05-18
申请人： Keiji Wakahara
发明人： Keiji Wakahara
IPC分类号： F02M33/02 , G01M19/00
CPC分类号： F02M25/0809
摘要： An evaporated gas control system mounted on an automotive vehicle includes a canister for absorbing gas evaporated from a fuel tank and a purging passage for purging the evaporated gas into an engine. The purging passage is branched out to two passages, an upstream purging passage connected to an upstream portion of a throttle valve through an upstream valve and a downstream purging passage connected to a downstream portion of the throttle valve. Malfunction of the upstream purging passage including the upstream valve is detected based on changes in pressure of the air intake passage, which are responsive to opening and closing operations of the upstream valve. Preferably, the malfunction detecting process is performed by operating the upstream valve from a fully closed state to a fully open state under the condition where the throttle valve is fully closed.
摘要翻译：安装在汽车上的蒸发气体控制系统包括用于吸收从燃料箱蒸发的气体的罐和用于将蒸发的气体吹扫到发动机中的净化通道。清洗通道分为两通道，上游清洗通道通过上游阀连接到节流阀的上游部分，下游清洗通道连接到节流阀的下游部分。基于对上游阀的打开和关闭操作的进气通道的压力变化来检测包括上游阀的上游清洗通道的故障。优选地，通过在节气门完全关闭的条件下将上游阀从完全关闭状态操作到完全打开状态来执行故障检测过程。

8. 发明授权

US07140241B2 Leak-check apparatus of fuel-vapor-processing system, fuel-temperature estimation apparatus and fuel-temperature-sensor diagnosis apparatus 有权
公开(公告)号：US07140241B2
公开(公告)日：2006-11-28
申请号：US10941903
申请日：2004-09-16
申请人： Keiji Wakahara
发明人： Keiji Wakahara
IPC分类号： G01M19/00
CPC分类号： F02M25/0809
摘要： A fuel-vapor-processing system for an engine has a canister for accumulating fuel evaporation gas. The system has a leak-check apparatus for checking a leak on passages. The leak-check apparatus includes a leak-check means for carrying out leak-check processing when the engine if in a stopped state. The leak-check means operates only if a predetermined condition is satisfied. It is thus possible to reduce the number of times the leak-check processing is carried out and, hence, possible to reduce power consumption. For example, only if a relatively small leak is detected when the engine is in a running state, the leak-check processing is carried out in a stopped state to verify existence of such a leak. In the leak-check processing, the temperature of fuel, detected by a sensor or an estimated value, may be taken into consideration.

9. 发明授权

US07024926B2 Thermostat malfunction detecting system for engine cooling system 有权
公开(公告)号：US07024926B2
公开(公告)日：2006-04-11
申请号：US11145996
申请日：2005-06-07
申请人： Keiji Wakahara , Akira Ichikawa
发明人： Keiji Wakahara , Akira Ichikawa
IPC分类号： G01M15/00
CPC分类号： F01P11/16 , F01P5/02 , F01P11/14 , F01P2023/00 , F01P2023/08 , F01P2025/08 , F01P2025/13 , F01P2025/62 , F01P2025/64 , F01P2025/66 , F01P2031/00 , F01P2031/20 , F01P2060/14 , F02D41/18 , F02D41/22 , F02D2200/0406 , F02D2200/0414 , G01K15/00 , Y02T10/40
摘要： A malfunction of a thermostat in a coolant circulating path is detected from an engine side coolant temperature in consideration of the following behavior of the coolant temperature. When an open-malfunction occurs, the coolant temperature becomes different considerably from that in the normal time in the temperature range in which the thermostat is to be normally closed. When a closure-malfunction occurs, the coolant temperature becomes different considerably from that during the normal time in the temperature range in which the thermostat is to be normally opened. Alternatively, the malfunction may be detected from a difference between the engine side coolant temperature and a radiator side coolant temperature.

10. 发明授权

US06968268B2 Misfire detector for an internal combustion engine 有权
标题翻译：内燃机失火探测器
公开(公告)号：US06968268B2
公开(公告)日：2005-11-22
申请号：US10757425
申请日：2004-01-15
申请人： Jun Yamada , Keiji Wakahara , Yoshinori Ma gawa
发明人： Jun Yamada , Keiji Wakahara , Yoshinori Ma gawa
IPC分类号： G01M15/11 , G06G7/70
CPC分类号： G01M15/11
摘要： A misfire detector calculates the engine speed fluctuation quantity Δωn for a predetermined period of time on the basis of the average engine speed on, which is the reciprocal of the time T120n that the crankshaft of the engine takes to turn 120 degrees. By comparing the calculated engine speed fluctuation quantity Δωn with a misfire determination value REF, from which it can be determined whether the engine is misfiring, the misfire detector determines whether the engine is misfiring. The misfire detector detects the rotational fluctuation per combustion stroke of each engine cylinder and learns the variation of the detected rotational fluctuation values during normal combustion. From this learned value and the detected rotational fluctuation value per combustion stroke of the cylinder, the misfire detector determines whether the cylinder is misfiring or not.
摘要翻译：基于作为发动机曲轴转动120度的时间T 120 n的时间的倒数的平均发动机转速on，计算发动机转速波动量Deltaomegan一段预定时间段。通过将计算出的发动机转速波动量Deltaomegan与失火判定值REF进行比较，由此可以确定发动机是否发生故障，失火检测器确定发动机是否发生故障。失火检测器检测每个发动机气缸的每个燃烧行程的旋转波动，并且了解正常燃烧期间检测到的旋转波动值的变化。从该学习值和检测到的气缸的每个燃烧行程的旋转变动值，失火检测器判定气缸是否发生故障。

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