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“Getting the Power to the Pavement”
Module 2: Power Train Eric Klang The Rock 2005 “Getting the Power to the Pavement” MAE 442 – Automotive Engineering 2006
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Vehicle Layout MAE 442 – Automotive Engineering 2006
Rear engine / rear wheel drive Mid engine / four wheel drive Front engine / front wheel drive Front engine / rear wheel drive MAE 442 – Automotive Engineering 2006
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Drive Train Outline 2.1 Couplers 2.2 Transmissions 2.3 Differentials
2.4 Bearings 2.5 Axels 2.6 Brakes Grease Fitting Locations MAE 442 – Automotive Engineering 2006
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2.1 Couplers MAE 442 – Automotive Engineering 2006
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2.1 Couplers Needs: Solutions: Start and Stop Shift gears
Mechanical Coupler (clutch) Fluid Coupler (torque converter) Electrical Coupler (generator) MAE 442 – Automotive Engineering 2006
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2.1.1 Clutches MAE 442 – Automotive Engineering 2006
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2.1.1 Clutches MAE 442 – Automotive Engineering 2006
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2.1.1 Clutch Operation Eric Klang Eric Klang Engine Disengaged
With Transmission Clutch pedal in Eric Klang Engine Engaged With Transmission Clutch pedal out Eric Klang MAE 442 – Automotive Engineering 2006
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2.1.1 Clutches MAE 442 – Automotive Engineering 2006
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2.1.1 Clutches Torque equations for clutches d D
F = spring force (normal to surface) m = friction coefficient N = number of surfaces (= 2 for most cars) Torque equations for clutches MAE 442 – Automotive Engineering 2006
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2.1.1 Clutches MAE 442 – Automotive Engineering 2006
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2.1.1 Clutch References http://auto.howstuffworks.com/clutch.htm
Automotive Engineering Fundamentals MAE 442 Student Projects: Automotive Clutches Clutch Assembly MAE 442 – Automotive Engineering 2006
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2.1.2 Torque Converters MAE 442 – Automotive Engineering 2006
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2.1.2 Torque Converters Turbine, Stator and Pump
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2.1.2 Torque Converters Turbine (driven) Pump (driver) Stator
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2.1.2 Torque Converters References
Automotive Engineering 2006 Fundamentals MAE 442 Student Projects: None Yet MAE 442 – Automotive Engineering 2006
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2.2 Transmissions MAE 442 – Automotive Engineering 2006
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2.2 Transmission Outline 2.2.1 Gears 2.2.2 Manual Transmissions
2.2.3 Automatic Transmissions 2.2.4 CVT’s MAE 442 – Automotive Engineering 2006
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2.2.1 Gears Spur Rack and pinion Internal Helical Herringbone Bevel
Miter Worm MAE 442 – Automotive Engineering 2006
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2.2.1 Gear Ratio Small = Pinion Large = Gear Input vs. Output
GR = dout /din MAE 442 – Automotive Engineering 2006
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2.2.1 Gear Terminology MAE 442 – Automotive Engineering 2006
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Note: dout /din = Nout /Nin = GR
2.2.1 Gear Terminology Pitch = N/d N = Number of Teeth d = Diameter of Pitch Circle Pressure Angle Through Pitch Point Tangent to Base Circle Gears mesh if Pitch and Pressure Angle match Note: dout /din = Nout /Nin = GR MAE 442 – Automotive Engineering 2006
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2.2.1 Gear Pressure Angle Lower angle = more efficiency
Higher angle = more clearance 20o & 25o standard MAE 442 – Automotive Engineering 2006
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2.2.1 Gear Animations gear_teeth_contact.mov involute_curve.mov
spur_gear.mov helical_gears.mov bevel_gears.mov worm_gears.mov herringbone_gears.mov MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions Jetta Transmission Removal Real World
Theoretical World Real World Jetta Transmission Removal MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions MAE 442 – Automotive Engineering 2006
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2.2.2 Manual Transmissions MAE 442 – Automotive Engineering 2006
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2.2.2 Synchronizers MAE 442 – Automotive Engineering 2006
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2.2.3 Automatic Transmissions
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2.2.3 Automatic Transmissions
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2.2.3 Automatic Transmissions
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2.2.3 Automatic Transmissions
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2.2.3 Automatic Transmissions
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2.2.3 Automatic Transmissions
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2.2.4 CVT References CVT.ppt CVT Project.pdf
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Homework 2.1 Problem 6 MAE 442 – Automotive Engineering 2006
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