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    • 6. 发明授权
    • Exhaust recirculation system for internal combustion engines
    • 内燃机排气再循环系统
    • US4442820A
    • 1984-04-17
    • US416696
    • 1982-09-10
    • Toshikazu InaHisasi KawaiTokio KohamaAkira NishimatsuYasuhiko IshidaSouichi Matsusita
    • Toshikazu InaHisasi KawaiTokio KohamaAkira NishimatsuYasuhiko IshidaSouichi Matsusita
    • F02D21/08F02M25/07F02M25/06
    • F02D41/0077F02M26/57F02M26/48Y02T10/47
    • In an exhaust gas recirculation system including a recirculation passage to provide a communication between an intake pipe and an exhaust pipe of an internal combustion engine, a flow control valve associated with a pneumatic servomotor to control the quantity of exhaust gas flowing through the recirculation passage in accordance with the pneumatic pressure applied to the servomotor, and first and second electrically operated valves to selectively apply negative pressure and the atmospheric pressure to the servomotor, a digital computer is adapted to calculate a desired opening degree of the flow control valve in response to an electric signal indicative of operating conditions of the engine, to calculate each energization time of the valves defined by a difference between the actual opening degree of the flow control valve and the calculated value in response to an electric signal indicative of the actual opening degree of the flow control valve, and to generate an output signal indicative of the calculated energization time.
    • 在包括用于提供内燃机的进气管和排气管之间的连通的再循环通道的排气再循环系统中,与气动伺服电动机相关联的流量控制阀控制流过再循环通道的废气量 根据施加到伺服电动机的气动压力,以及第一和第二电动阀,以选择性地向伺服电动机施加负压和大气压力,数字计算机适于响应于所述流量控制阀计算期望的开度 指示发动机的运行状态的电信号,以计算由流量控制阀的实际开度与计算值之间的差异限定的阀的每个通电时间,响应于指示实际开度的电信号 流量控制阀,并产生输出信号指示 计算出的通电时间。
    • 9. 发明授权
    • Dual sensitivity torque detector
    • US4503713A
    • 1985-03-12
    • US486832
    • 1983-04-20
    • Hideki ObayashiTokio KohamaKimitaka SaitoHisasi KawaiToshikazu Ina
    • Hideki ObayashiTokio KohamaKimitaka SaitoHisasi KawaiToshikazu Ina
    • G01L3/10G01L3/14G01L3/02
    • G01L3/1407G01L3/109
    • A torque detector, particularly a torque detector for detecting a torque applied to a torque transmission shaft which is connected to a load such as a wheel of an automobile, comprises a first shaft connected to a driving shaft, a second shaft connected to a torque transmission shaft, and a plurality of elastic members, each of which is interposed between the first shaft and the second shaft for transmitting the torque of the first shaft to the second shaft while receiving the compression force between the first shaft and the second shaft when the driving shaft is driven. The first shaft comprises a flange portion wherein a plurality of long grooves are formed so as to extend in the rotating direction thereof. The second shaft comprises a flange portion wherein a plurality of long holes are formed so as to extend in the rotating direction thereof and penetrate therethrough at such positions as to be substantially opposed to said long grooves. Each of the elastic members is accommodated within each of the long holes. The projecting side portion of each of the elastic members is accommodated within each of the long grooves. The long holes are grouped into two kinds of long holes having different lengths in the rotating direction of the second shaft. One kind of long holes have a length equal to that of the long groove of the first shaft while the other kind of long holes have a length longer than that of one kind of long holes by a predetermined angular distance. Until the applied torque reaches a predetermined value, the first shaft is connected to the second shaft only through one kind of elastic members to decrease the total spring constant thereof and when the applied torque exceeds the predetermined value, the first shaft is connected to the second shaft through all of the elastic members to increase the total spring constant thereof. The torque detector further comprises a data processor by which the angular phase difference between the first shaft and the second shaft, which occurs due to the compression of the elastic members is detected and torque is calculated from the detected angular phase difference.