公开(公告)号：US4442820A

公开(公告)日：1984-04-17

申请号：US416696

申请日：1982-09-10

申请人： Toshikazu Ina ,  Hisasi Kawai ,  Tokio Kohama ,  Akira Nishimatsu ,  Yasuhiko Ishida ,  Souichi Matsusita

发明人： Toshikazu Ina ,  Hisasi Kawai ,  Tokio Kohama ,  Akira Nishimatsu ,  Yasuhiko Ishida ,  Souichi Matsusita

IPC分类号： F02D21/08 ,  F02M25/07 ,  F02M25/06

CPC分类号： F02D41/0077 ,  F02M26/57 ,  F02M26/48 ,  Y02T10/47

摘要： 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.

摘要翻译： 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。