发动机电子控制3

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,第,*,页,发动机电子控制技术,发动机电子控制技术,传感器,执行器,控制器,硬件,软件,诊断和测试,1,发动机上的传感器,Engine speed,发动机转速,Air mass,空气流量计,Intake manifold pressure,进气歧管压力,Throttle position,节气门位置,Temperature,温度传感器,Knocking sensor,爆震传感器,Needle lift,针阀升程传感器,Lambda-sensor,氧传感器,Intelligent sensors,智能传感器,2,动力系统的传感器,Air mass sensor(,Motronic,),Knocking(Motronic,)Environmental pressure,sensor(Motronic,),Pressure sensor(Transmission control,Motronic,),Boot pressure sensor(Electronic,Diesel control,Motronic,),Lambda sensor,High pressure sensor(GDI,Common Rail),Tank pressure(On-Board-Diagnose),Engine speed sensor(transmission control,Motronic,),Acceleration pedal position sensor(,Electromic,Acc.Pedal,Electrohydraulic,brake),Angle/Position sensor(,Motronic,),3,传感器的基本功能,SENSOR,Valves (not electrical),Physical/chemical,Electrical,Output signal,Valve (Temperature,zero point fluctuation),4,汽车上的传感器,1 Measurement valve recorder,2 Adjust switch,3 Driver,4 Controller,AK Actuator,AZ Indicator,SA Switch,SE Sensor,SG Control Unit,physical valves,E Electrical valves,disturbance,5,传感器集成程度的划分,6,传感器的特性,Sensor,Passive Sensors,Measured values,Electr.Signal,Sensor,Active Sensors,Measured values,Electr.Signal,Assistant energy,7,电容式传感器测量原理,8,电感式位移或角度传感器的原理,9,短路环的测量原理,1)Movable short circuiting ring,2)Soft magnetic core,3)coil,10,曲轴角度和转速传感器,Inductive camshaft speed sensor,Sensor voltage,1 permanent magnet,2 case,3 Engine structure,4 Iron core,5 coil,6 toothed wheel(tooth gap),Cant determine the engine phase,Additional camshaft signal successful.,11,基于磁场变化测量的传感器,12,霍尔传感器,13,磁电式和霍尔式传感器的比较,14,热线式空气流量传感器,1 Hybrid switch,2 Cover,3 Metal,4 Inner hole with heat wire,5 case,6 protection grid,7 fix ring,15,热线式空气流量传感器的组成,16,热线式空气流量传感器的电桥,17,热线式空气流量传感器的特性,1:Theoretical characteristics line,2:Experimental Char.line,18,热膜式空气流量传感器,19,热膜式空气流量传感器的特性,1 temperature profile,without flow,2 temperature profile,with flow,3 sensor measurement cells,4 heated zone,5 sensor membrane,6 measure canal with air mass sensor,7 intake air flow,M1,M2 Measurement point,T1,T2 Temperature valve on the measuring points M1 and M2,Temperature difference,20,叶板式空气流量传感器,1 choke flap,2 air temp.sensor,3 to ECU,4 Potentiometer,5 damping volume,6 Compensation flap,Intake air flow,21,压力传感器,22,压力传感器的工作原理,1 pressure sensitive chip,2,Si,-Temperature feeler,3,electr,.Contactor,4 pressure interface,5 comparing pressure,6 case,23,应变片的工作原理,24,相对压力测量方法,25,压力传感器的结构,1 Temperature sensor(NTC),2 case bottom,3 manifold wall,4 seal ring,5 electrical interface(socket),6 case cover,7 measure cell,26,电位计传感器,27,角度传感器,28,电位计,29,电感式节气门传感器,30,利用节气门角度确定空气流量,Determination of air mass flow from,engine speed and throttle angle,Injection MAP,Put knowledge of engine loop performance ahead density correcting successfully,Alternative:Determination of air mass flow from manifold pressure and engine speed,31,温度测量,32,热电偶,33,负温度系数的传感器,1,electr,.Interface,2 case,3 seal ring,4 screw thread,5 measuring resistance,6 coolant,34,温度传感器的特性曲线,35,爆震传感器,1 Seismic masses,2,Vergussmasse,3 Piezo ceramics,4 Contactor,5,electr,.Interface,Fall1:Only a sensor for all cylinder,Fall2:1 sensor for 2 cylinder,36,压电效应,Model of longitudinal effect,Left:unloaded crystal,Right:charge change at a deformed Quartz-Crystal,37,针阀升程传感器,1 Hold body,2 Needle movement sensor,3 Pressure spring,4,Fuhrungsscheibe,5 Pressing spring,6 Pressing column,7 Nozzle nut,8 Interface to evaluate module,9 Bolt,10 Contact ensign,11 Sensor coil,12 Press bolt,13 Spring seat,38,Additive consumption,Running,milage,(Miles),Window for,oil exchange,Sensor Signal,机油状态传感器,Principle:measurement the oil routing capability,which is depend on the additive wastage and the viscosity.,39,housing,Housing coat,Shield,Zirconium,Dioxid,body,Platinum coated,Sensor voltage,氧传感器,40,宽带氧传感器,41,NOx,传感器,42,NOx,传感器的工作原理,43,NOx,传感器的工作原理,44,