汽油机辅助控制系统 (2)ppt课件

1、怠速控制安装节气门直动控制式旁通空气控制式步进电动机调理机构旋转电磁阀调理机构占空比电磁阀控制机构真空电磁阀控制机构 (a)节气门直动式 (b)旁通空气方式 怠速控制执行机构的空气控制方式 1节气门； 2节气门支配臂；3执行元件 节气门直动控制安装 1节气门支配臂；2怠速执行器；3、6节气门；4喷油器；5调压器；7防转孔；8弹簧；9电动机； 10、11、13齿轮；12传动轴；14丝杠 步进电机怠速控制 1阀座；2阀轴；3定子线圈；4轴承；5进给丝杠机构；6旁通空气进口；7阀步进电机与怠速控制阀做成一体，装在进气总管内。电机可顺时针或逆时针旋转，使阀沿轴向挪动，改动阀与阀座之间的间隙，调理流过节

2、气门旁统统道的空气量。该种怠速控制阀还可用来控制发动机的快怠速，而不需求辅助空气阀。步进电机的控制电路步进电机的控制电路步进电机的转动方向可经过改动4个定子线圈的通电顺序来实现。转子一周分为32个步级进展，每个步级转动一个爪的角度，即11.25(普通步进电动机为2到125个步级)。 步进电机式怠速控制机构1怠速控制阀；2稳压箱；3节气门体；4空气流量计 旋转电磁阀怠速控制机构1阀；2双金属带；3冷却水腔；4阀体；5线圈；6永久磁铁；7线圈L2；8轴；9旁通口；10固销；11挡块；12杆 占空比控制型电磁阀构造1弹簧；2磁化线圈；3轴；4阀；5壳体；6波纹管；7传感器；8进气总管；9节气门真空电

3、磁阀怠速控制机构氧化锆氧传感器及其输出特性氧化锆氧传感器及其输出特性a a构造构造b b输出特性输出特性11 法兰法兰22铂电极铂电极33氧化锆管氧化锆管44铂铂电极电极55加热器加热器 6 6涂层涂层77废气废气88套套管管99大气大气 给给ECU，用来确定实，用来确定实践的空燃比。践的空燃比。11二氧化钛元件二氧化钛元件22金金属外壳属外壳33陶瓷绝缘体陶瓷绝缘体 44接线端子接线端子55陶瓷元陶瓷元件件66导线导线77金属维护金属维护套套 (a) 剖面图 (b) 外形图 (c) 气流走向 废气再循环阀构造 可变废气再循环率系统1ECU；2节气门开关；3废气再循环管路；4废气再循环阀；5定

4、压阀；6真空控制电磁阀；7电磁阀 活性炭罐蒸发污染控制安装1油箱盖及真空泄放阀；2油箱；3单向阀；4蒸汽通气管路；5废气再循环及炭罐控制电磁阀；6节气门；7进气歧管；8真空室；9排放控制阀；10定量排放小孔；11活性炭罐只能在空气室出口和进气门之间传播，缩短了压力波的传播间隔，以满足发动机高速工况下的气体动力增压要求。 (a) 翻开 (b) 封锁 动力阀控制系统 1真空室；2真空电磁阀；3ECU(ECCS)； 4单向阀；5动力阀废气涡轮增压控制系统任务原理图1切换阀；2动作器；3空气冷却器；4空气滤清器；5ECU；6释压电磁阀水温传感器的任务和诊断原理图 冷却水温度传感器电路缺点OBD诊断座

5、缺点码代号及缺点码意义 SAE规范定义缺点范围代码3B+y(v%r#oWlTiQeNbK8G5D1A-x*t$qZnVkSgPdMaI7F4C0z)w&s!pXmUjRfOcL9H6E2B+y(u%r#oWlThQeNbJ8G5D1A-w*t$qYnVkSgPdLaI7F3C0z)v&s#pXmUiRfOcK9H5E2B+x(u%rZoWlThQeMbJ8G4D1A-w*t!qYnVjSgPdLaI6F3C0y)v&s#pXlUiRfNcK9H5E2A+x(u$rZoWkThPeMbJ7G4D1z-w&t!qYmVjSgOdL9I6F3B0y)v%s#pXlUiQfNcK8H5E2A+x*u$

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14、&s!pXmUjRfOcL9H6E2B+y(u%r#oWlThQeNbJ8G5D1A-w*t$qYnVkSgPdLaI7F3C0z)v&s!pXmUiRfOcK9H6E2B+x(u%rZoWlThQeMbJ8G4D1A-w*t!qYnVjSgPdLaI6F3C0y)v&s#pXlUiRfNcK9H5E2A+x(u$rZoWkThPeMbJ7G4D1z-w*t!qYmVjSgOdLaI6F3B0y)v%s#pXlUiQfNcK8H5E2A+x*u$rZnWkThPeMaJ7G4C1z-w&t!pYmVjRgOdL9I6E3B0y(v%s#oXlUiQfNbK8H5D2A+x*u$qZnWkShP

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