Pressure transducer
    1.
    发明授权
    Pressure transducer 失效
    压力传感器

    公开(公告)号:US4462259A

    公开(公告)日:1984-07-31

    申请号:US470137

    申请日:1983-02-28

    CPC classification number: G01L9/0095

    Abstract: A pressure transducer of the manometer type comprises two interconnected columns of liquid with means for applying differential pressure across the columns. The liquid is a magnetic liquid and a magnetic field is impressed on the columns to attract the liquid by magnetic force to a reference position. The applied differential pressure acts counter to the magnetic force to shift the columns so that their difference in lengths reflects the pressure. By using capacitor plates to define the walls for the liquid columns and a magnetic liquid which is a dielectric, the capacitance between the plates is a function of the column lengths and therefore is a function of the applied differential pressure.

    Abstract translation: 压力计类型的压力传感器包括两个相互连接的液体柱,其具有跨过柱施加压差的装置。 液体是磁性液体,并且磁场压在柱上以通过磁力将液体吸引到参考位置。 施加的压差与磁力相反,使柱移动,使得它们的长度差反映了压力。 通过使用电容器板来限定液柱的壁和作为电介质的磁性液体,板之间的电容是柱长度的函数,因此是施加的压差的函数。

    Dual sensor closed loop fuel control system having signal transfer
between sensors during warmup
    2.
    发明授权
    Dual sensor closed loop fuel control system having signal transfer between sensors during warmup 失效
    双传感器闭环燃油控制系统在加热期间具有传感器之间的信号传递

    公开(公告)号:US4027477A

    公开(公告)日:1977-06-07

    申请号:US681533

    申请日:1976-04-29

    Inventor: Edwin C. Storey

    CPC classification number: F02D41/1441

    Abstract: A closed loop fuel control system for an internal combustion engine having a catalytic converter in its exhaust system and a pair of zirconia sensors for generating respective signals indicative of the air-fuel ratio in the gases upstream and downstream of the catalytic converter. These sensors are used in the control system to control the rate of flow of fuel or air to the engine in response to the sensor signals to maintain a constant stoichiometric air-fuel ratio in the exhaust system for maximum catalytic converter efficiency in simultaneous oxidation and reduction. A circuit is described for imposing the output of the zirconia sensor upstream from the catalytic converter across the zirconia sensor downstream of the catalytic converter until the zirconia sensor downstream of the catalytic converter reaches its operating temperature.

    Abstract translation: 一种在其排气系统中具有催化转化器的内燃机的闭环燃料控制系统和一对氧化锆传感器,用于产生指示催化转化器上游和下游的气体中的空燃比的相应信号。 这些传感器用于控制系统中以响应于传感器信号来控制燃料或空气到发动机的流量,以在排气系统中保持恒定的理论空燃比,以实现同时氧化和还原的最大催化转化器效率 。 描述了一种电路,用于将催化转化器上游的氧化锆传感器的输出横跨催化转化器下游的氧化锆传感器,直到催化转化器下游的氧化锆传感器达到其工作温度。

    Canister using thermoelectric cooler
    3.
    发明授权
    Canister using thermoelectric cooler 失效
    罐用热电冷却器

    公开(公告)号:US4732588A

    公开(公告)日:1988-03-22

    申请号:US49405

    申请日:1987-05-14

    Abstract: A fuel vapor storage canister includes a vapor inlet for introducing vapor into the canister and a bed of adsorbant material in fluid communication with the inlet for adsorbing vapor within the canister. A vapor purge tube is in fluid communication with the bed for purging fuel vapor from the bed. A thermoelectric cooler/heater selectively cools the inlet tube to promote condensation of vapors therein and selectively and alternatively heats the bed to promote purging of vapors from the bed and the remainder of the canister.

    Abstract translation: 燃料蒸汽储存罐包括用于将蒸汽引入罐中的蒸汽入口和与入口流体连通的吸附材料床,用于吸附罐内的蒸气。 蒸汽吹扫管与床流体连通,用于从床中吹扫燃料蒸气。 热电冷却器/加热器选择性地冷却入口管以促进其中的蒸气的冷凝,并且选择性地并且可选地加热床以促进蒸发器从床和罐的其余部分的吹扫。

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