公开(公告)号：US4292258A

公开(公告)日：1981-09-29

申请号：US114391

申请日：1980-01-22

申请人： Shoichiro Sakurai ,  Tadahiko Otani

发明人： Shoichiro Sakurai ,  Tadahiko Otani

IPC分类号： F02M7/28 ,  F02M7/24

CPC分类号： F02M7/28

摘要： An altitude compensating device for carburetors has an air metering valve in fluid communication with the fuel passage of the carburetor and a pressure-sensitive bellows adapted to drivingly control the air metering valve such that the flow rate of the compensating air is increased as the altitude increases. A closed control air chamber is defined at the upstream side of the air metering valve. Venturi vacuum around the venturi portion of the intake passage of the carburetor and air are introduced into the control air chamber so that the pressure in the latter is reduced below the atmospheric pressure with an increase of the intake air flow rate to the engine and the compensating air is decreased to eliminate undesirable low concentration tendency of the mixture.

摘要翻译： 用于化油器的高度补偿装置具有与化油器的燃料通道流体连通的空气计量阀和适于驱动地控制空气计量阀的压敏波纹管，使得补偿空气的流量随着高度的增加而增加 。 在空气计量阀的上游侧限定有封闭的控制空气室。 在化油器进气通道的文氏管部分周围的文丘里真空和空气被引入到控制空气室中，使得后者中的压力降低到低于大气压力，同时增加对发动机的进气流量和补偿 降低空气以消除混合物的不期望的低浓度倾向。

公开(公告)号：US4681077A

公开(公告)日：1987-07-21

申请号：US692572

申请日：1985-01-18

申请人： Haruhiko Kobayashi ,  Tadahiko Otani

发明人： Haruhiko Kobayashi ,  Tadahiko Otani

IPC分类号： F02D41/00 ,  F02D41/14

CPC分类号： F02D41/149 ,  F02D41/1487 ,  F02D41/1497

摘要： A method and apparatus for controlling an air-fuel ratio for an engine, in which a closed-loop control and an open-loop control are performed selectively in accordance with the operating condition of the engine. The closed-loop control determines an air-fuel ratio of the mixture to be supplied to a combustion chamber on the basis of the oxygen concentration within the exhaust gas. The open-loop control determines an air-fuel ratio of the mixture by modifying the air-fuel ratio determined in the closed-loop control in a manner that the former one is lean by a predetermined ratio than the latter one.

摘要翻译： 根据发动机的运行条件选择性地进行闭环控制和开环控制的用于控制发动机的空燃比的方法和装置。 闭环控制基于废气中的氧浓度确定要供应到燃烧室的混合物的空燃比。 开环控制通过将以闭路控制中确定的空燃比以前者与前者相比预定的比例进行改变来确定混合物的空燃比。

公开(公告)号：US4517837A

公开(公告)日：1985-05-21

申请号：US521901

申请日：1983-08-10

申请人： Yoshishige Oyama ,  Teruo Yamauchi ,  Mamoru Fujieda ,  Yutaka Nishimura ,  Takao Sasayama ,  Shinichi Sakamoto ,  Hisanori Moriya ,  Takeshi Atago ,  Kanemasa Sato ,  Yoshikazu Hoshi ,  Sadayasu Ueno ,  Tadahiko Otani ,  Mineo Kashiwaya

发明人： Yoshishige Oyama ,  Teruo Yamauchi ,  Mamoru Fujieda ,  Yutaka Nishimura ,  Takao Sasayama ,  Shinichi Sakamoto ,  Hisanori Moriya ,  Takeshi Atago ,  Kanemasa Sato ,  Yoshikazu Hoshi ,  Sadayasu Ueno ,  Tadahiko Otani ,  Mineo Kashiwaya

IPC分类号： G01F1/68 ,  F02D41/18 ,  G01F1/684 ,  G01F1/69 ,  G01F1/692 ,  G01F5/00 ,  G01K13/02 ,  G01P5/12

CPC分类号： F02D41/187 ,  G01F1/684 ,  G01F1/6842 ,  G01F1/692 ,  G01F5/00

摘要： An air flow rate measuring apparatus in which an air flow sensor whose electric characteristic varies with the rate of air flowing by the sensor is supported on a heat-insulating support member and located in a bypass tube provided in the vicinity of the main venturi of an internal combustion engine, whereby the air flow sensor is isolated from adverse thermal influences so as to reduce an error in measuring air flow rate.

摘要翻译： 一种空气流量测量装置，其中电特性随着传感器流动的空气流速而变化的空气流量传感器被支撑在绝热支撑构件上并且位于设置在主要文丘里管附近的旁通管中 内燃机，由此空气流量传感器与不利的热影响隔离，以减少测量空气流量的误差。

公开(公告)号：US4395907A

公开(公告)日：1983-08-02

申请号：US211900

申请日：1980-12-01

申请人： Kiyomi Morita ,  Tadahiko Otani ,  Yoshikazu Aochi ,  Takao Teranishi

发明人： Kiyomi Morita ,  Tadahiko Otani ,  Yoshikazu Aochi ,  Takao Teranishi

IPC分类号： G01F1/68 ,  G01F1/684 ,  G01F5/00

CPC分类号： G01F1/6842 ,  G01F5/00

摘要： An air flow rate measuring device has a by-pass passage branched from a main air passage leading to an engine, and heat wires provided in the by-pass passage. The inlet of the by-pass passage is positioned at the upper end of a venturi tube disposed in the main air passage, shaped annularly, and opened to the main air passage so that the air at the inlet can be subjected to the dynamic pressure of the main air stream. The outlet of the by-pass passage also is annularly formed and opened normally to the main air stream in the main air passage. The flow rate of air sucked into the engine is measured by the heat wires subjected to air flow taken in the by-pass passage.

摘要翻译： 空气流量测量装置具有从通向发动机的主空气通路分支的旁路通路，以及设置在旁路通路中的热丝。 旁通通道的入口位于设置在主空气通道中的文丘里管的上端，环形地形成并且向主空气通道开口，使得入口处的空气可以经受 主要气流。 旁路通道的出口也环形地形成并且正常地通向主空气通道中的主空气流。 吸入发动机的空气的流量通过在旁路通路中受到空气流动的热丝进行测量。