公开(公告)号：US06698280B1

公开(公告)日：2004-03-02

申请号：US09523362

申请日：2000-03-10

申请人： Noriyuki Iden ,  Tokiji Ito ,  Yuichi Kohara ,  Shuichi Hanai ,  Shin Adachi

发明人： Noriyuki Iden ,  Tokiji Ito ,  Yuichi Kohara ,  Shuichi Hanai ,  Shin Adachi

IPC分类号： F02M2508

CPC分类号： F02M25/0818

摘要： A failure test apparatus for a fuel-vapor purging system for adsorbing fuel vapor in a fuel tank into a canister and for purging fuel to an intake system of an internal combustion engine as needed. The purging system has at least one valve. A first test unit provides a differential pressure between the inside and the outside of the fuel-vapor purging system, measures the internal pressure with the fuel-vapor purging system in an airtight condition, and determines whether a leak exists in the fuel-vapor purging system from the behavior of the internal pressure. The test by the first test unit involves a differential-pressure forming process of creating a differential pressure between the inside and the outside of the fuel-vapor purging system, a sealing process of making the fuel-vapor purging system airtight when the differential pressure exists, and a differential-pressure releasing process for releasing the differential pressure. In association with one or more of the processes, a second test unit measures the internal pressure of the fuel-vapor purging system to detect a failure in any valve actuated in one of the processes based on the behavior of the internal pressure.

摘要翻译： 一种燃料蒸汽净化系统的故障试验装置，用于将燃料箱中的燃料蒸气吸附到罐中并根据需要将燃料吹入内燃机的进气系统。 清洗系统具有至少一个阀。 第一测试单元在燃料 - 蒸汽清洗系统的内部和外部之间提供差压，在气密状态下用燃料 - 蒸气清洗系统测量内部压力，并且确定在燃料 - 蒸气吹扫中是否存在泄漏 系统从内部压力的行为。 第一测试单元的测试涉及在燃料蒸汽清除系统的内部和外部之间产生压差的差压成形过程，当存在压差时使燃料 - 蒸气吹扫系统气密的密封过程 ，以及用于释放差压的差压释放过程。 与一个或多个过程相关联，第二测试单元测量燃料 - 蒸汽清除系统的内部压力，以基于内部压力的行为检测在一个过程中致动的任何阀中的故障。

公开(公告)号：US06523398B1

公开(公告)日：2003-02-25

申请号：US09451098

申请日：1999-11-30

申请人： Shuichi Hanai ,  Shin Adachi ,  Tokiji Itoh ,  Yuichi Kohara ,  Noriyuki Iden

发明人： Shuichi Hanai ,  Shin Adachi ,  Tokiji Itoh ,  Yuichi Kohara ,  Noriyuki Iden

IPC分类号： G01M1900

CPC分类号： F02M25/0809 ,  F02M25/089

摘要： An improved diagnosis apparatus for detecting leakage of a fuel vapor purge system that purges fuel vapor from a fuel tank to an intake passage of an engine. The apparatus includes a pressure sensor and a purge valve. The pressure sensor detects the pressure in the purge system. The purge valve connects the purge system with the intake passage for lowering the purge system pressure to a predetermined pressure level. After the purge system pressure is lowered to the predetermined level, the purge system is sealed. The apparatus measures the rate of pressure change immediately after the purge system is sealed. The apparatus subsequently measures the rate of pressure change when the purge system pressure reaches a second reference pressure value and computes the ratio of the rates. The apparatus diagnoses whether there is a leak in the purge system based on the ratio and the rate of pressure change at the second reference pressure value.

摘要翻译： 一种改进的诊断装置，用于检测从燃料箱向发动机的进气通道吹扫燃料蒸汽的燃料蒸气吹扫系统的泄漏。 该装置包括压力传感器和净化阀。 压力传感器检测吹扫系统中的压力。 吹扫阀将吹扫系统与进气通道连接，以将吹扫系统压力降低到预定压力水平。 在清洗系统压力降低到预定水平之后，清洗系统被密封。 该装置在吹扫系统被密封之后立即测量压力变化率。 该装置随后在吹扫系统压力达到第二参考压力值时测量压力变化率并计算速率的比率。 该装置基于第二参考压力值的比率和压力变化率来诊断吹扫系统中是否存在泄漏。

公开(公告)号：US5724809A

公开(公告)日：1998-03-10

申请号：US659628

申请日：1996-06-06

申请人： Noritake Mitsutani ,  Shin Adachi

发明人： Noritake Mitsutani ,  Shin Adachi

IPC分类号： F01N11/00 ,  F01N3/18

CPC分类号： F01N11/007 ,  F01N2550/02 ,  Y02T10/47

摘要： The device according to the present invention determines whether the catalytic converter has deteriorated based on the outputs of an upstream air-fuel ratio sensor and a downstream air-fuel ratio sensor only when the flow rate of the intake air is within an allowable flow range. Further, the allowable range is determined in accordance with operating conditions of the engine, for example, the temperature of the catalytic converter. Since the O.sub.2 storage capability of the catalytic converter changes in accordance with the temperature of the catalytic converter, different determination results may be obtained for the same catalytic converter if the determination is carried out at different temperature. In this invention, for example, the flow range is selected in accordance with the temperature of the catalytic converter in such a manner that a normal catalytic converter is always determined as being normal and a deteriorated catalytic converter is always determined as being deteriorated. Therefore, in the present invention, the deterioration of the catalytic converter is correctly determined regardless of a change in the operating conditions of the engine.

摘要翻译： 根据本发明的装置仅在进气的流量在容许流量范围内时才基于上游空燃比传感器和下游空燃比传感器的输出来判定催化转化器是否劣化。 此外，根据发动机的运转条件，例如催化转化器的温度来决定容许范围。 由于催化转化器的O2储存能力根据催化转化器的温度而变化，因此如果在不同的温度下进行测定，则对于相同的催化转化器可以获得不同的测定结果。 在本发明中，例如，根据催化转化器的温度选择流量范围，使得通常将正常催化转化器确定为正常，并且总是将恶化的催化转化器确定为劣化。 因此，在本发明中，无论发动机的运转状态如何变化，都能正确地确定催化剂的劣化。

公开(公告)号：US06318161B1

公开(公告)日：2001-11-20

申请号：US09561624

申请日：2000-05-02

申请人： Shin Adachi ,  Hidetoshi Amano

发明人： Shin Adachi ,  Hidetoshi Amano

IPC分类号： G01M1500

CPC分类号： F02D41/1495 ,  F02P17/12 ,  G01M15/11

摘要： In a diagnostic apparatus for an internal combustion engine, an electronic control unit recognizes occurrence of a misfire in the engine based on fluctuations of the rotational speed of a crankshaft detected by a rotation speed sensor. Based on the detected incidences of misfire, the electronic control unit performs diagnostics. The electronic control unit turns on a warning light when, after the first diagnosis of the presence of an abnormality, a second diagnosis of the presence of an abnormality is made without the return of the engine to the normal state being recognized after a restart of the engine.

摘要翻译： 在内燃机的诊断装置中，电子控制单元基于由转速传感器检测出的曲轴的转速的波动来识别发动机的失火的发生。 基于检测到的失火事件，电子控制单元执行诊断。 电子控制单元在首次诊断出异常之后进行警告灯，在不重新启动发动机的情况下，使发动机返回到正常状态，进行异常的存在的第二诊断 发动机。

公开(公告)号：US4800863A

公开(公告)日：1989-01-31

申请号：US156901

申请日：1988-02-17

申请人： Hideo Miyagi ,  Fumiaki Ohya ,  Koji Fukushima ,  Shin Adachi

发明人： Hideo Miyagi ,  Fumiaki Ohya ,  Koji Fukushima ,  Shin Adachi

IPC分类号： F02B33/44 ,  F02B39/12 ,  F02D41/00 ,  F02D41/12 ,  F02D23/00

CPC分类号： F02D41/0007 ,  F02B33/446 ,  F02B39/12 ,  F02D41/126 ,  Y02T10/144

摘要： An internal combustion engine is provided with a mechanically operated supercharger in kinematic connection with a crankshaft the engine. The engine is provided with a system for controlling the effect of supercharger, such as a by-pass control valve. A timer is provided for detecting a predetermined short period after the engine is switched to an acceleration condition from the preceding deceleration condition with a fuel-cut, or after a moderate acceleration has begun. The system for controlling the effect of the supercharging is so controlled that the effect of supercharging is weakened during that period.

公开(公告)号：US06431160B1

公开(公告)日：2002-08-13

申请号：US09670020

申请日：2000-09-26

申请人： Takayuki Sugiyama ,  Shin Adachi

发明人： Takayuki Sugiyama ,  Shin Adachi

IPC分类号： F02D4100

CPC分类号： F02D41/2454 ,  F02D41/1454 ,  F02D41/2483

摘要： An air-fuel ratio control apparatus for an internal combustion engine has an oxygen sensor, a first operational means, a second operational means, a maximum and minimum setting means, an air-fuel ratio correcting means, a maximum and minimum magnifying means, and a maximum and a minimum returning means. When an air-fuel ratio learning value calculated by the second operational means reaches a maximum or minimum limit set by the maximum and minimum setting means, an air-fuel ratio feedback correction value is measured for a predetermined time. The maximum and minimum magnifying means increases the maximum or decreases the minimum limit of the air-fuel learning value in response to a deviation of fuel injection amount from a fuel injection amount requested for maintaining a target air-fuel ratio. The maximum and minimum returning means returns the maximum or minimum limit of the air-fuel ratio learning value to a predetermined basic maximum or minimum limit, when a predetermined condition continues for a predetermined time. An emission condition, or an emission amount exhausted from the internal combustion engine, is improved by the above-mentioned control.

摘要翻译： 用于内燃机的空燃比控制装置具有氧传感器，第一操作装置，第二操作装置，最大和最小设定装置，空燃比校正装置，最大和最小放大装置，以及 最大和最小返回手段。 当由第二操作装置计算的空燃比学习值达到由最大和最小设定装置设定的最大或最小限度时，在预定时间内测量空燃比反馈校正值。 最大和最小放大装置响应于燃料喷射量与用于维持目标空燃比所需的燃料喷射量的偏差而增加空燃比学习值的最小值或最小限度。 当预定条件持续预定时间时，最大和最小返回装置将空燃比学习值的最大或最小极限返回到预定的基本最大或最小极限。 通过上述控制来提高从内燃机排出的排放条件或排放量。

公开(公告)号：US4766873A

公开(公告)日：1988-08-30

申请号：US862971

申请日：1986-05-14

申请人： Hideo Miyagi ,  Fumiaki Ohya ,  Koji Fukushima ,  Shin Adachi

发明人： Hideo Miyagi ,  Fumiaki Ohya ,  Koji Fukushima ,  Shin Adachi

IPC分类号： F02B33/44 ,  F02B39/12 ,  F02D41/00 ,  F02D41/12 ,  F02D23/00

CPC分类号： F02D41/0007 ,  F02B33/446 ,  F02B39/12 ,  F02D41/126 ,  Y02T10/144

摘要： An internal combustion engine provided with a mechanically operated supercharger in kinematic connection with a crankshaft the engine. The engine is provided with a system for controlling the effect of supercharging, such as a by-pass control valve. A timer is provided for detecting a predetermined short period after the engine is switched to an acceleration condition from the preceding deceleration condition with a fuel-cut, or after a moderate acceleration has begun. The system for controlling the effect of the supercharging is so controlled that the effect of supercharging is weakened during that period.

摘要翻译： 一种内燃机，其具有与发动机曲轴运动学连接的机械操作的增压器。 发动机设置有用于控制增压效果的系统，例如旁通控制阀。 提供了一种定时器，用于在发动机从燃料切断的先前减速条件切换到加速条件之后或在中等加速开始之后检测预定的短时间段。 控制增压效果的系统受到控制，使得增压效果在此期间减弱。