威驰底盘新技术培训.ppt

1、Chassis,Clutch Manual Transaxle C550 Manual Transaxle C15# Series Manual Transaxle Automatic Transaxle U540E Automatic Transaxle U340E Automatic Transaxle Drive Shaft Suspension Brake Steering Tire and Wheel,Chassis,Clutch Clutch Overall Dry single-plate clutch operatedby hydraulic pressure is used,

2、*1: DST (Diaphragm Spring Turnover)*2: Outer Diameter x Inner Diameter x Thickness,Specification,Chassis,Clutch Reservoir Tank Clutch fluid reservoir tank and brake fluid reservoir tank are integrated for all models,Clutch Master Cylinder,Brake Fluid Reservoir Tank,Chassis,C550 Manual Transaxle Over

3、all C550 manual transaxle is used, basic construction and operation are same as Yaris/Echo,Chassis,C550 Manual Transaxle Specification,Chassis,C15# Series Manual Transaxle Overall C15# series manual transaxle are used, basic construction and operation are same as Yaris/Echo,Chassis,C15# Series Manua

4、l Transaxle Specification,Chassis,U540E Automatic Transaxle Overall U540E 4-speed automatic transaxle ECT has been newly used,Temporarily,Chassis,U540E Automatic Transaxle Specification,Chassis,U540E Automatic Transaxle Torque Converter A hydraulically operated lock-up mechanism type torque converte

5、r is used,Temporarily,Chassis,U540E Automatic Transaxle Oil Pump Trochoid gear type oil pump is used. As a result oil pump has made more compact and the driving torque has been reduced,Drive Gear,Driven Gear,Pump Body,Stator ShaftAssembly,: Brake,: Clutch,: One-way Clutch,Input,Chassis,U540E Automat

6、ic Transaxle Planetary Gear Unit U540E effects the shifting of all speeds using 1 set of ravigneaux type planetary gear unit,IntermediateShaft,InputShaft,FrontSunGear,Front Ring Gear,Rear Sun Gear,LongPinionGear,ShortPinionGear,Output,B2,F,B1,C1,C2,C3,行星齿轮机构结构原理图,: Brake,: Clutch,: One-way Clutch,In

7、put,Chassis,U540E Automatic Transaxle Planetary Gear Unit Construction 1st gear (D or 2 position),IntermediateShaft,InputShaft,FrontSunGear,Front Ring Gear,Rear Sun Gear,LongPinionGear,ShortPinionGear,Output,B2,F,B1,C1,C2,C3,Chassis,U540E Automatic Transaxle Planetary Gear Unit Function of component

8、s,Chassis,U540E Automatic Transaxle Planetary Gear Unit Operation condition,*1: After engaging, lock-up control is ON*2: After engaging, line pressure control is ON*3: After engaging, line pressure control is OFF,: Signal ON, X: Signal OFF, : Operation,Chassis,U540E Automatic Transaxle Valve Body Th

9、e valve body consist following parts,Shift Solenoid Valve SL2,Shift Solenoid Valve SL3,Shift Solenoid Valve SL1,Shift Solenoid Valve SR,Shift Solenoid Valve SL,Shift Solenoid Valve DSL,Valve Body Assembly,Chassis,U540E Automatic Transaxle Valve Body Function of shift solenoid Valve,Chassis,U540E Aut

10、omatic Transaxle Layout of Components,Transmission Control Switch,EngineECU,ECT ECU,Stop Lightswitch,DLC3,Chassis,U540E Automatic Transaxle Layout of Components,Output Speed Sensor,Input Speed Sensor,Neutral Start Position Switch,Shift Solenoid Valve SL2,Shift Solenoid Valve SL1,Shift Solenoid Valve

11、 SL3,Shift Solenoid Valve SR,Shift Solenoid Valve SL,Shift Solenoid Valve DSL,Fluid Temp. Sensor,Chassis,U540E Automatic Transaxle System Diagram,Engine ECU,Fluid Temp. Sensor,NeutralStartSwitch,Input Turbine Speed Sensor,DLC3,Counter Gear Speed Sensor,SolenoidValves,Stop Light Switch,Combination Me

12、ter,ECT ECU,VehicleSpeed,Throttle Valve Opening Angle Engine Speed Water Temp.,Torque Reduction?,Chassis,U540E Automatic Transaxle Centrifugal Fluid Pressure Canceling Mechanism A canceling fluid pressure chamber is used to prevent the generation of pressure by the centrifugal force,Clutch,Centrifug

13、al Fluid Pressure Applied to Canceling Chamber,Centrifugal Fluid Pressure,Target Fluid Pressure,Input Shaft,Piston,Chassis,Water Temp.Sensor,Shift PositionSwitch,Throttle Position Sensor,Vehicle Speed Sensor,TransmissionControl Switch, ,SolenoidValve,Control Valve,Lock Valve,Current,Fluid Pressure,U

14、540E Automatic Transaxle Direct Clutch Pressure Control Solenoid valve regulated the clutch and brake hydraulic pressure without using an accumulator,C2, C3, B1 and B2,Chassis,U540E Automatic Transaxle Direct Clutch Pressure Control The time lag in an inactive stroke was reduced by controlling a clu

15、tch by direct fluid pressure,Time,Direct Clutch Pressure Type,Fluid Pressure,Accumulator Type,Shift Shock Absorbing,Inactive Stroke,Time lag Reduction,Chassis,U540E Automatic Transaxle Line Pressure Control Line pressure is optimally controlled in accordance with the engine torque information,Primar

16、y Regulator,Throttle Pressure,Line Pressure,Shift Range,Throttle Valve Opening Angle,Engine Speed,Shift Position,Current,FluidPressure,Solenoid Valve SL3,Chassis,U540E Automatic Transaxle Engine Torque Control Retards the engine ignition timing temporarily to improve shift feeling during up or down

17、shifting,Ignition TimingRetard Signal,Water Temp.Sensor,Shift PositionSwitch,Throttle Position Sensor,CrankshaftPosition Sensor,Vehicle Speed Sensor,TransmissionControl Switch,TransmissionControl Signal,Retard,Time,Drive Wheel Torque,IgnitionTiming,Reduced Torque Fluctuations,Shift Change,Chassis,U5

18、40E Automatic Transaxle “N” to “D” Squat Control When the shift lever is shifted from “N” to “D” range, the gear is temporarily shifted to 2nd and then to 1st to reduce vehicle squat,Chassis,U540E Automatic Transaxle Clutch to Clutch Pressure Control Optimal shift characteristics have been achieved

19、through optimal hydraulic pressure settings,Control Valve,Signals from individual sensors,Disconnect Side Clutch,Solenoid Valves,Connect Side Clutch,Line Pressure,Control Valve,Chassis,U540E Automatic Transaxle Fail-safe Function This function minimizes the loss of operability when any abnormality o

20、ccurs in each sensor or solenoid valve,Malfunction,Input Turbine Speed Sensor Fluid Temp. Sensor Solenoid Valve SL1, 2 Solenoid Valve SL Solenoid Valve DSL Communication Line between Engine ECU and ECT ECU Crankshaft Position Sensor,4th Upshift Prohibit,Service Point,U540E Automatic Transaxle Diagno

21、sis System In the ECT ECU detects a malfunction in the system, it alerts the driver by blinking the O/D OFF light and storing the DTCs,O/DOFF,O/DOFF,Blinking,Service Point,U540E Automatic Transaxle Check the DTC Using SST (09843-18040), connect terminals TC and CG of DLC3,DLC3,TC,O/DOFF,OFF,ON,CG,Se

22、rvice Point,U540E Automatic Transaxle DTC (Diagnostic Trouble Code) DTC output 2-digit only,Service Point,U540E Automatic Transaxle Clear the DTC Turn the ignition switch OFF and disconnect the EFI fuse in the relay block at least 30 seconds or more,EFIFuse,Service Point,U540E Automatic Transaxle De

23、lete the Learning Value of the ECT ECU,NOTE:When the automatic transaxle assembly or valve body assembly are replaced, deletion of the learning value of the ECT ECU is required.,TC,CG,1. Connect the terminals TC and CG,2. Depress the brake pedal within 3 secs. after turning the ignition switch ON an

24、d keep depressing the pedal until operation 3 is completed,Within3 seconds,Keep the Depressing,Service Point,U540E Automatic Transaxle Delete the Learning Value of the ECT ECU,3. Shift the shift lever PRP within 1 seconds, repeat 8 times*,4. Turn the ignition switch OFF and turn the ignition switch

25、ON again,Keep the Depressing,*: When the Step 3 is completed, O/D OFF indicator blink for 2.5,Chassis,U540E Automatic Transaxle Overdrive Switch O/D switch changed from ON-OFF lock type to momentary type,Chassis,U340E Automatic Transaxle Overall The compact, lightweight and high-capacity4-speed auto

26、matic transaxle Super ECT is used,Chassis,U340E Automatic Transaxle Specification,Chassis,U340E Automatic Transaxle Planetary Gear Unit U340E automatic transaxle effects the shifting of all speeds using 2 sets of planetary gear unit,: Brake,: Clutch,: One-way Clutch,Input,Output,IntermediateShaft,Re

27、ar PlanetaryGear,Front PlanetaryGear,CounterDrive Gear,Counter Drive Gear,B2,B1,B3,C1,C2,C3,Chassis,U340E Automatic Transaxle Valve Body The valve body has a two-stage construction. All the solenoid valves are installed in the lower valve body,Accumulators (B2, C3, C2),Linear Solenoid Valve (SL),Acc

28、umulator (C1),Fluid Temp. Sensor,Upper Valve Body,Linear Solenoid Valve (SLT),Shift Solenoid Valve (ST),Accumulator (B1),Lower Valve Body,Shift Solenoid Valve (S2),Shift Solenoid Valve (S1),Chassis,U340E Automatic Transaxle Valve Body The valve body has a two-stage construction. All the solenoid val

29、ves are installed in the lower valve body,Chassis,U340E Automatic Transaxle Centrifugal Fluid Pressure Canceling Mechanism A canceling fluid pressure chamber is used to prevent the generation of pressure by the centrifugal force,Clutch,Centrifugal Fluid Pressure Applied to Canceling Chamber,Centrifu

30、gal Fluid Pressure,Target Fluid Pressure,Input Shaft,Piston,Chassis,U340E Automatic Transaxle Line Pressure Control Line pressure is optimally controlled in accordance with the engine torque information,Primary Regulator,Throttle Pressure,Line Pressure,Shift Range,Throttle Valve Opening Angle,Engine

31、 Speed,Shift Position,Current,FluidPressure,Solenoid Valve SLT,Engine & ECT ECU,Chassis,U340E Automatic Transaxle Clutch to Clutch Pressure Control The shift solenoid valve minutely controls the clutch pressure in accordance with the engine output and driving conditions,Linear Solenoid Valve SLT,Acc

32、umulator Control Valve,C1,B1,SolenoidValve ST,3-4 Shift Valve,4-3 Timing Valve,3-4 Timing Valve,Chassis,U340E Automatic Transaxle Fail-safe Function This function minimizes the loss of operability when any abnormality occurs in each sensor or solenoid valve,Malfunction,Vehicle Speed Sensor Input Tur

33、bine Speed Sensor Fluid Temp. Sensor Solenoid Valve SLT Solenoid Valve SL Solenoid Valve ST Water Temp. Sensor Knock Sensor Throttle Position Sensor,4th Upshift Prohibit,Chassis,U340E Automatic Transaxle Fail-safe Function Case of the malfunction in the solenoid valve S1 or S2,Chassis,U340E Automati

34、c Transaxle Overdrive Switch O/D switch changed from ON-OFF lock type to momentary type,Chassis,Drive Shaft Overall Drive shaft uses the Tripod type CVJ (Constant-Velocity Joint) on the differential side, and Rzeppa type CVJ on the wheel side,WheelSide,Left-hand,Differential Side,WheelSide,Different

35、ial Side,Right-hand,Rzeppa Type CVJ,Rzeppa Type CVJ,Tripod Type CVJ,Dynamic Damper,Chassis,Suspension Suspension Line-up Front: MacPherson strut type suspension Rear: Torsion-beam type suspension with toe-conrrect bushings ( eta beam suspension),Chassis,Brake Overall Front: 14” Ventilated Disc Brake Rear: Leading Trailing Drum Brake 14” Solid Disc Brake (Thailand model),Fr