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    System for detecting failure of fuel pressure sensor
    2.
    发明授权
    System for detecting failure of fuel pressure sensor 有权
    检测燃油压力传感器故障的系统

    公开(公告)号：US5983714A

    公开(公告)日：1999-11-16

    申请号：US137821

    申请日：1998-08-21

    申请人： Atsushi Izumiura ,  Akira Murakami ,  Atsushi Kato ,  Shigeo Hidai ,  Seiichi Hosogai

    发明人： Atsushi Izumiura ,  Akira Murakami ,  Atsushi Kato ,  Shigeo Hidai ,  Seiichi Hosogai

    IPC分类号： F02D19/02 ,  F02D41/22 ,  F02D45/00 ,  F02M21/02 ,  F02M65/00 ,  G01M15/00

    CPC分类号： F02D19/027 ,  F02D19/025 ,  F02D41/222 ,  F02M65/00 ,  F02D2041/223 ,  F02M21/0239 ,  F02M21/0278 ,  Y02T10/32

    摘要： A system for detecting failure of a fuel pressure sensor in an internal combustion engine, including an injector (32) provided at an intake system of the engine downstream of a throttle valve (38), a fuel supply passage (16) connected to a fuel supply source (fuel tank 12) for supplying fuel to the injector (32), pressure regulator (28) provided in the fuel supply passage (16) and operating to maintain a difference between the fuel pressure (PF2A) and the manifold absolute pressure at a constant value, a fuel pressure sensor (PF2 sensor 54) for detecting the fuel pressure (PF2A) in the fuel supply passage (16) downstream of the pressure regulator, and a manifold absolute pressure sensor (62) for detecting the manifold absolute pressure (PBA) downstream of the throttle valve (38). In the system, an index indicative of a ratio (.DELTA.PF2A) of the fuel pressure (PF2A) fluctuation relative to the manifold absolute pressure (PBA) fluctuation is compared to reference values (#PF2L, #PF2H) which define a range. Sensor failure is discriminated when the index (.DELTA.PF2A) is found to have remained outside of the range for a predetermined maximum time (tmP2STK). The system enables rapid and accurate detection of fuel pressure sensor abnormality (failure).

    摘要翻译： 一种用于检测内燃机中的燃料压力传感器的故障的系统，包括设置在节流阀（38）下游的发动机的进气系统处的喷射器（32），与燃料连接的燃料供给通道 用于向喷射器（32）供应燃料的供应源（燃料箱12），设置在燃料供应通道（16）中的压力调节器（28），并且操作以维持燃料压力（PF2A）与歧管绝对压力之间的差 用于检测压力调节器下游的燃料供给通道（16）中的燃料压力（PF2A）的燃料压力传感器（PF2传感器54）和用于检测歧管绝对压力的歧管绝对压力传感器（62） （PBA）在节流阀（38）的下游。 在该系统中，将指示相对于歧管绝对压力（PBA）波动的燃料压力（PF2A）波动的比率（DELTA PF2A）的指标与限定范围的参考值（＃PF2L，＃PF2H）进行比较。 当发现索引（DELTA PF2A）已经保持在预定最大时间（tmP2STK）的范围之外时，会识别传感器故障。 该系统能够快速，准确地检测燃油压力传感器异常（故障）。

    Air-fuel ratio control system for internal combustion engines
    3.
    发明授权
    Air-fuel ratio control system for internal combustion engines 有权
    内燃机空燃比控制系统

    公开(公告)号：US5941212A

    公开(公告)日：1999-08-24

    申请号：US150208

    申请日：1998-09-09

    申请人： Akira Murakami ,  Seiichi Hosogai ,  Shigeo Hidai ,  Eisaku Gosho

    发明人： Akira Murakami ,  Seiichi Hosogai ,  Shigeo Hidai ,  Eisaku Gosho

    IPC分类号： F02D41/04 ,  F02D41/10 ,  F02D41/12 ,  F02D41/14

    CPC分类号： F02D41/1487 ,  F02D41/123 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/501

    摘要： An air-fuel ratio control system for an internal combustion engine includes an ECU which cuts off fuel supply to the engine at deceleration thereof, measures a fuel cut-off period over which the fuel cut-off means cuts off fuel supply to the engine, and enriches the air-fuel ratio of a mixture supplied to the engine to a degree dependent upon the measured fuel cut-off period, at the restart of fuel supply to the engine immediately after termination of cutting-off of fuel supply to the engine. When a second cutting-off of fuel supply to the engine is carried out within a predetermined time period after the restart of fuel supply to the engine immediately after termination of a first cutting-off of fuel supply to the engine, the ECU sets the degree of enriching the air-fuel ratio of the mixture supplied to the engine according to the sum of a first fuel cut-off period over which the first cutting-off of fuel supply to the engine lasted and a second fuel cut-off period over which the second cutting-off of fuel supply to the engine lasted.

    摘要翻译： 用于内燃机的空燃比控制系统包括：ECU，其在减速时切断对发动机的燃料供给，测量燃料切断期间燃料切断装置切断对发动机的燃料供给， 并且在停止向发动机的燃料供给终止之后立即将供给到发动机的混合物的空燃比丰富到取决于测量的燃料截止周期的程度。 当在首次切断向发动机的燃料供给终止之后，在重新开始向发动机供给燃料之后的预定时间段内进行向发动机的燃料供给的第二切断时，ECU设定程度 根据第一燃料切断期间和发动机持续时间的第一燃料供给停止的第一燃料切断期和第二燃料切断期间的总和，提供供给发动机的混合物的空燃比， 向发动机提供燃油的第二次切断持续。

    Catalyst deterioration-determining system for internal combustion engines using compressed natural gas
    5.
    发明授权
    Catalyst deterioration-determining system for internal combustion engines using compressed natural gas 失效
    使用压缩天然气的内燃机的催化剂劣化确定系统

    公开(公告)号：US6092369A

    公开(公告)日：2000-07-25

    申请号：US195431

    申请日：1998-11-18

    申请人： Shigeo Hosogai ,  Hiroshi Kubota ,  Shigeo Hidai

    发明人： Shigeo Hosogai ,  Hiroshi Kubota ,  Shigeo Hidai

    IPC分类号： G01N27/409 ,  F01N3/20 ,  F01N11/00 ,  F02D19/02 ,  F02D41/14 ,  F02M21/02 ,  G01N27/26 ,  F01N3/00

    CPC分类号： F01N11/002 ,  F01N11/007 ,  F01N2550/02 ,  Y02T10/47

    摘要： A catalyst deterioration-determining system for an internal combustion engine has a catalyst arranged in the exhaust system, for purifying exhaust gases emitted from the engine, an oxygen concentration sensor arranged in the exhaust system at a location downstream of the catalyst, for detecting the concentration of oxygen present in the exhaust gases, and an ECU which controls the air-fuel ratio of an air-fuel mixture supplied to the engine in a feedback manner in response to the output from the oxygen concentration sensor. Determination of deterioration of the catalyst is carried out based on the output from the oxygen concentration sensor during execution of air-fuel ratio feedback control. An inversion period parameter representative of a repetition period of change in the output from the oxygen concentration sensor over a predetermined diagnosis period is measured, and a determination parameter is calculated by averaging values of the inversion period parameter measured over different diagnosis periods as the predetermined diagnosis period. The determination of deterioration of the catalyst is carried out based on the determination parameter.

    摘要翻译： 一种用于内燃机的催化剂劣化判定系统，具有布置在排气系统中的用于净化从发动机排出的废气的催化剂，布置在该催化剂下游位置的排气系统中的氧浓度传感器，用于检测浓度 存在于排气中的氧气;以及ECU，响应于氧浓度传感器的输出，以反馈方式控制供给发动机的空气燃料混合物的空燃比。 基于在执行空燃比反馈控制期间来自氧浓度传感器的输出，进行催化剂劣化的测定。 测量代表氧浓度传感器在预定诊断期间的输出的重复变化周期的反转周期参数，并且通过将在不同诊断周期测量的反转周期参数的平均值作为预定诊断来计算确定参数 期。 基于确定参数进行催化剂劣化的测定。

    Fuel vapor release suppression system for fuel tank
    9.
    发明授权
    Fuel vapor release suppression system for fuel tank 有权
    用于燃油箱的燃油蒸汽释放抑制系统

    公开(公告)号：US07380543B2

    公开(公告)日：2008-06-03

    申请号：US11605930

    申请日：2006-11-28

    申请人： Gaku Hatano ,  Koichi Hidano ,  Masakazu Kitamoto ,  Shigeo Hidai ,  Shoji Uhara ,  Hiroshi Kitamura ,  Takahiro Imamura

    发明人： Gaku Hatano ,  Koichi Hidano ,  Masakazu Kitamoto ,  Shigeo Hidai ,  Shoji Uhara ,  Hiroshi Kitamura ,  Takahiro Imamura

    IPC分类号： F02M17/20 ,  F02M17/22

    CPC分类号： F02M25/089 ,  F02M37/0058 ,  F02M37/0088 ,  F02M37/10 ,  Y10T137/86196 ,  Y10T137/86212

    摘要： In a fuel vapor release suppression system for a fuel tank, a main tank and a sub tank communicate with each other, and the sub tank and a canister communicate with each other. When the main tank has a higher temperature, fuel vapor of the main tank is supplied to the sub tank where the fuel vapor is liquefied. When the main tank has a lower temperature, fuel vapor of the sub tank is supplied to the main tank. At this time, low concentration fuel vapor is supplied from the canister to the main tank, thereby accelerating generation of fuel vapor corresponding to sub tank fuel vapor pressure, so that the sub tank fuel vapor pressure decreases. Therefore, liquefaction is accelerated in the sub tank when the main tank temperature increases. Thus, fuel vapor generated in a fuel tank is effectively liquified irrespective of ambient air temperature.

    摘要翻译： 在用于燃料箱的燃料蒸汽释放抑制系统中，主油箱和副罐彼此连通，并且副罐和罐彼此连通。 当主油箱温度较高时，主油箱的燃料蒸气被供给到燃料蒸气液化的副油箱。 当主油箱温度较低时，副油箱的燃料蒸气被供应到主油箱。 此时，将低浓度燃料蒸气从罐供给到主罐，从而加速产生对应于副罐燃料蒸气压的燃料蒸汽，使得副罐燃料蒸气压降低。 因此，当主罐温度升高时，副罐中的液化加速。 因此，不管环境空气温度如何，在燃料箱中产生的燃料蒸气都被有效地液化。

    Fuel vapor release suppression system for fuel tank
    10.
    发明申请
    Fuel vapor release suppression system for fuel tank 有权
    用于燃油箱的燃油蒸汽释放抑制系统

    公开(公告)号：US20070151610A1

    公开(公告)日：2007-07-05

    申请号：US11605930

    申请日：2006-11-28

    申请人： Gaku Hatano ,  Koichi Hidano ,  Masakazu Kitamoto ,  Shigeo Hidai ,  Shoji Uhara ,  Hiroshi Kitamura ,  Takahiro Imamura

    发明人： Gaku Hatano ,  Koichi Hidano ,  Masakazu Kitamoto ,  Shigeo Hidai ,  Shoji Uhara ,  Hiroshi Kitamura ,  Takahiro Imamura

    IPC分类号： E03B11/00 ,  F02M33/02

    CPC分类号： F02M25/089 ,  F02M37/0058 ,  F02M37/0088 ,  F02M37/10 ,  Y10T137/86196 ,  Y10T137/86212

    摘要： In a fuel vapor release suppression system for a fuel tank, a main tank and a sub tank communicate with each other, and the sub tank and a canister communicate with each other. When the main tank has a higher temperature, fuel vapor of the main tank is supplied to the sub tank where the fuel vapor is liquefied. When the main tank has a lower temperature, fuel vapor of the sub tank is supplied to the main tank. At this time, low concentration fuel vapor is supplied from the canister to the main tank, thereby accelerating generation of fuel vapor corresponding to sub tank fuel vapor pressure, so that the sub tank fuel vapor pressure decreases. Therefore, liquefaction is accelerated in the sub tank when the main tank temperature increases. Thus, fuel vapor generated in a fuel tank is effectively liquified irrespective of ambient air temperature.

    摘要翻译： 在用于燃料箱的燃料蒸汽释放抑制系统中，主油箱和副罐彼此连通，并且副罐和罐彼此连通。 当主油箱温度较高时，主油箱的燃料蒸气被供给到燃料蒸气液化的副油箱。 当主油箱温度较低时，副油箱的燃料蒸气被供应到主油箱。 此时，将低浓度燃料蒸气从罐供给到主罐，从而加速产生对应于副罐燃料蒸气压的燃料蒸汽，使得副罐燃料蒸气压降低。 因此，当主罐温度升高时，副罐中的液化加速。 因此，不管环境空气温度如何，在燃料箱中产生的燃料蒸气都被有效地液化。