公开(公告)号：US06192866B1

公开(公告)日：2001-02-27

申请号：US09396425

申请日：1999-09-15

申请人： Akihiko Araki ,  Masanobu Ohsaki ,  Michiyuki Fujimoto ,  Mitsuru Miyata

发明人： Akihiko Araki ,  Masanobu Ohsaki ,  Michiyuki Fujimoto ,  Mitsuru Miyata

IPC分类号： F02D4122

CPC分类号： F02D41/222 ,  F02D2200/0406 ,  G01L27/007 ,  Y02T10/40

摘要： A diagnostic system for detecting a freezing condition of an intake pressure sensor for an engine includes a control unit for checking engine operating parameters after a turn-on of an ignition switch to determining whether the engine is a predetermined state permitting a freeze diagnosis, and for performing the freeze diagnosis only when the engine is in the predetermined state. The control unit monitors a decrease of the intake pressure sensed by the intake pressure sensor as the engine speed increases from a start, and judges a freezing condition to exist if the intake pressure does not become sufficiently low even after the engine speed becomes higher than a predetermined speed level.

摘要翻译： 用于检测发动机的进气压力传感器的冷冻状态的诊断系统包括控制单元，用于在点火开关点火之后检查发动机运行参数，以确定发动机是否是允许冷冻诊断的预定状态，以及用于 仅当发动机处于预定状态时执行冷冻诊断。 当发动机转速从一开始升高时，控制单元监视由进气压力传感器感测到的进气压力的下降，并且即使在发动机转速变得高于 预定速度级别。

公开(公告)号：US6158420A

公开(公告)日：2000-12-12

申请号：US280067

申请日：1999-03-29

申请人： Masanobu Ohsaki ,  Michiyuki Fujimoto ,  Seiichi Ohtani ,  Katsuyoshi Shiobara

发明人： Masanobu Ohsaki ,  Michiyuki Fujimoto ,  Seiichi Ohtani ,  Katsuyoshi Shiobara

IPC分类号： F02M69/00 ,  F02D31/00 ,  F02D41/22 ,  F02M23/04 ,  F02M65/00 ,  F02M69/46 ,  G01M15/04 ,  F02M23/00

CPC分类号： F02D31/005 ,  F02D41/221 ,  F02M23/04 ,  F02D2041/3088 ,  F02D2200/0406 ,  F02D2200/501 ,  Y02T10/146

摘要： A diagnostic apparatus for supplying an assist air in an internal combustion engine includes: an assist air passage for guiding intake air from upstream of a throttle valve to a fuel injector installed downstream of said throttle valve; an assist air control valve installed in said assist air passage; a sensor for detecting an engine operating parameter; and a control unit. The control unit includes a data storage portion and a data processing portion. The control unit selectively forces the assist air control valve open and closed upon detection of at least one predetermined diagnosis condition. The control unit then calculates and stores a plurality of values corresponding to changes in the engine operating parameter based on signals received from the sensor, and determines an occurrence of an error with assist air supply based on comparisons of said values with a predetermined value.

摘要翻译： 用于在内燃机中供应辅助空气的诊断装置包括：辅助空气通道，用于将进气从节流阀的上游引导到安装在所述节流阀下游的燃料喷射器; 安装在所述辅助空气通道中的辅助空气调节阀; 用于检测发动机工作参数的传感器; 和控制单元。 控制单元包括数据存储部分和数据处理部分。 在检测到至少一个预定诊断条件时，控制单元选择性地迫使辅助空气控制阀打开和关闭。 控制单元然后基于从传感器接收到的信号来计算和存储对应于发动机工作参数的变化的多个值，并且根据所述值与预定值的比较来确定具有辅助空气供应的错误的发生。

公开(公告)号：US5992389A

公开(公告)日：1999-11-30

申请号：US58416

申请日：1998-04-10

申请人： Masanobu Ohsaki

发明人： Masanobu Ohsaki

IPC分类号： F02D41/04 ,  F02D41/18 ,  F02D45/00 ,  F02D41/14

CPC分类号： F02D41/182

摘要： An intake air temperature TC of a cylinder is estimated from an equation of TC=TA+HEXGIN (TA-TA)+273.degree. K on the basis of a cylinder heat-transfer coefficient HEXGIN, an intake air temperature TA and a cooling water temperature TW. An operation of a first correction coefficient KTA is carried out on the basis of an equation KTA=TTC/TC with the use of an intake air temperature TTC estimated under reference environment. Next, an operation of a finally correction coefficient KTAHOS is carried out on the basis of an equation of KTAHOS=KTA.times.[1.0-{(KTA-1.0).times.KCHOS}] with the use of an air density fine adjustment coefficient KCHOS, and then, by taking advantage of the finally correction coefficient KTAHOS, a fuel injection quantity based on an intake air pressure is corrected.

摘要翻译： 基于气缸传热系数HEXGIN，进气温度TA和冷却水温度，根据TC = TA + HEXGIN（TA-TA）+273°K的方程式来估计气缸的进气温度TC TW 基于在参考环境下估计的进气温度TTC，基于公式KTA = TTC / TC来执行第一校正系数KTA的操作。 接下来，使用空气密度微调系数KCHOS，基于KTAHOS = KTAx [1.0 - {（KTA-1.0）×KCHOS}]的方程式进行最终校正系数KTAHOS的操作， 通过利用最终校正系数KTAHOS，校正基于进气压力的燃料喷射量。

公开(公告)号：US20080271435A1

公开(公告)日：2008-11-06

申请号：US11869803

申请日：2007-10-10

申请人： Toshihiro AONO ,  Takahumi Ohwada ,  Akira Kiyomura ,  Masanobu Ohsaki ,  Seiichi Ohtani ,  Shigeo Ohkuma

发明人： Toshihiro AONO ,  Takahumi Ohwada ,  Akira Kiyomura ,  Masanobu Ohsaki ,  Seiichi Ohtani ,  Shigeo Ohkuma

IPC分类号： F01N3/00

CPC分类号： F01N11/007 ,  F01N2560/025 ,  F01N2900/0422 ,  F02D41/123 ,  F02D41/1456 ,  F02D41/1495 ,  Y02T10/47

摘要： A deterioration diagnosis system for an air fuel sensor mounted to an exhaust pipe of an internal combustion engine. The air fuel sensor determines a mixture ratio of air and fuel fed into the internal combustion engine. In the system, an inclination of an output signal of the air-fuel ratio sensor is calculated; variance of the inclination is calculated; deterioration of the air-fuel ratio sensor is determined based on the variance of the inclination.

摘要翻译： 一种安装在内燃机的排气管上的空气燃料传感器的劣化诊断系统。 空气燃料传感器确定供给到内燃机的空气和燃料的混合比。 在该系统中，计算空燃比传感器的输出信号的倾斜度; 计算倾斜的方差; 基于倾斜的变化来确定空燃比传感器的劣化。

公开(公告)号：US20050072410A1

公开(公告)日：2005-04-07

申请号：US10739033

申请日：2003-12-19

申请人： Masanobu Ohsaki

发明人： Masanobu Ohsaki

IPC分类号： F02D45/00 ,  F02D41/14 ,  F02D41/22

CPC分类号： F02D41/1495 ,  F02D41/1488

摘要： In the diagnosing process in which a target air-fuel ratio in an air-fuel ratio feedback control is forcibly changed, and based on a response time of detection signal from an air-fuel ratio sensor to the change, a response characteristic of the air-fuel ratio sensor is diagnosed, when the diagnosis is finished, an air-fuel ratio feedback control signal is returned in stepwise to a value in just before the starting of diagnosis.

摘要翻译： 在空燃比反馈控制中的目标空燃比强制变化的诊断处理中，根据来自空燃比传感器的检测信号的响应时间变化，空气的响应特性 诊断燃料比传感器，当诊断结束时，空燃比反馈控制信号在诊断开始之前逐步返回到一个值。

公开(公告)号：US5168859A

公开(公告)日：1992-12-08

申请号：US646722

申请日：1991-01-29

申请人： Masanobu Ohsaki

发明人： Masanobu Ohsaki

IPC分类号： F02D41/14 ,  F02D41/22 ,  F02D45/00 ,  F02P17/12 ,  G01M15/10

CPC分类号： G01M15/104 ,  F02D41/1488 ,  F02D41/22 ,  Y02T10/40

摘要： In an internal combustion engine where in a predetermined driving state, the air-fuel ratio is feedback-controlled based on a detection signal of an air-fuel ratio sensor and in other driving state, the air-fuel ratio is feed-forward-controlled, the presence or absence of a misfire is judged from the detection signal of the air-fuel sensor at the time of the feed forward control, and when the presence of a misfire is judged, a warning is given.

摘要翻译： PCT No.PCT / JP90 / 00693 Sec。 371 1991年1月29日第 102（e）1990年1月29日PCT日期1990年5月29日PCT。在内燃机中，在预定的驱动状态下，基于空燃比传感器的检测信号来反馈控制空燃比 并且在其他驱动状态下，空燃比是前馈控制的，在前馈控制时，根据空气 - 燃料传感器的检测信号判断是否存在失火，并且当存在 判断失火是一个警告。

公开(公告)号：US07836758B2

公开(公告)日：2010-11-23

申请号：US11869803

申请日：2007-10-10

申请人： Toshihiro Aono ,  Takahumi Ohwada ,  Akira Kiyomura ,  Masanobu Ohsaki ,  Seiichi Ohtani ,  Shigeo Ohkuma

发明人： Toshihiro Aono ,  Takahumi Ohwada ,  Akira Kiyomura ,  Masanobu Ohsaki ,  Seiichi Ohtani ,  Shigeo Ohkuma

IPC分类号： G01M15/10

CPC分类号： F01N11/007 ,  F01N2560/025 ,  F01N2900/0422 ,  F02D41/123 ,  F02D41/1456 ,  F02D41/1495 ,  Y02T10/47

摘要： A deterioration diagnosis system for an air fuel sensor mounted to an exhaust pipe of an internal combustion engine. The air fuel sensor determines a mixture ratio of air and fuel fed into the internal combustion engine. In the system, an inclination of an output signal of the air-fuel ratio sensor is calculated; variance of the inclination is calculated; deterioration of the air-fuel ratio sensor is determined based on the variance of the inclination.

摘要翻译： 一种安装在内燃机的排气管上的空气燃料传感器的劣化诊断系统。 空气燃料传感器确定供给到内燃机的空气和燃料的混合比。 在该系统中，计算空燃比传感器的输出信号的倾斜度; 计算倾斜的方差; 基于倾斜的变化来确定空燃比传感器的劣化。

公开(公告)号：US07117727B2

公开(公告)日：2006-10-10

申请号：US10830054

申请日：2004-04-23

申请人： Masanobu Ohsaki ,  Hisanori Ozaki

发明人： Masanobu Ohsaki ,  Hisanori Ozaki

IPC分类号： G01M15/00

CPC分类号： F02D41/1498 ,  F02D41/022 ,  F02D41/22 ,  F02D2200/1012 ,  F02D2200/1015 ,  Y02T10/40

摘要： Whether a misfire occurred is judged based on a comparison between diagnosis data that indicates a variation of an engine rotation speed and a threshold based on engine operating conditions. The misfire judgment is canceled based on a result of a comparison between data indicating an average correlation between the diagnosis data and the threshold, and a threshold for cancellation judgment.

摘要翻译： 基于发动机的运转条件，基于指示发动机转速的变化的诊断数据与阈值之间的比较来判断是否发生失火。 基于指示诊断数据和阈值之间的平均相关性的数据与取消判断阈值之间的比较的结果来取消失火判断。

公开(公告)号：US07013214B2

公开(公告)日：2006-03-14

申请号：US10739033

申请日：2003-12-19

申请人： Masanobu Ohsaki

发明人： Masanobu Ohsaki

IPC分类号： G06G7/70

CPC分类号： F02D41/1495 ,  F02D41/1488

摘要： In a diagnosing process in which a target air-fuel ratio in an air-fuel ratio feedback control is forcibly changed, and based on a response time of a detection signal from an air-fuel ratio sensor to the change, a response characteristic of the air-fuel ratio sensor is diagnosed. When the diagnosis is finished, an air-fuel ratio feedback control signal is returned stepwise to a value immediately before the starting of diagnosis.

摘要翻译： 在空燃比反馈控制中的目标空燃比强制变化的诊断处理中，基于来自空燃比传感器的检测信号的响应时间与变化的响应特性， 空燃比传感器被诊断。 当诊断结束时，空燃比反馈控制信号逐步返回到诊断开始前的值。

公开(公告)号：US5817923A

公开(公告)日：1998-10-06

申请号：US788663

申请日：1997-01-24

申请人： Masanobu Ohsaki ,  Seiichi Ohtani ,  Mitsuru Miyata

发明人： Masanobu Ohsaki ,  Seiichi Ohtani ,  Mitsuru Miyata

IPC分类号： F02B77/08 ,  F02D41/06 ,  F02D45/00 ,  F02D19/06

CPC分类号： F02D41/1497 ,  F02D41/064 ,  F02D2200/0612 ,  F02D2200/1012

摘要： A period of from when the starter switch is turned on or from the start of the fuel injection until when the engine rotation speed has reached a predetermined rotation speed, is detected as a parameter representing the starting performance. After the engine rotation speed has reached a predetermined rotation speed, furthermore, the parameter representing a change in the rotation and the parameter representing rising gradient of the rotation-speed are detected. Then, the parameter representing the starting performance, the parameter representing a change in the rotation and the parameter representing a rising gradient of the rotation speed are weighted to detect the fuel property.

摘要翻译： 作为表示起动性能的参数，检测从启动开关接通或燃料喷射开始到发动机转速达到规定转速的时间。 此外，在发动机转速达到预定旋转速度之后，检测表示转速变化的参数和表示转速上升斜率的参数。 然后，加权表示启动性能的参数，表示旋转变化的参数和表示转速上升梯度的参数，以检测燃料特性。