Modern Automotive Technology Chapter 11 - …

1 1 Modern Automotive Modern Automotive TechnologyTechnology Chapter 11 Chapter 11 Engine FundamentalsEngine Fundamentals2zIdentify the major parts of a typical Automotive the four-stroke cycle. Define common engine the basic function of the major parts of an Automotive and demonstrate safe working practices related to answer ASE certification test questions that require knowledge of the basic operation of piston ObjectivesLearning Objectives31. The piston strokepiston stroke is the distance of up and down movement from TDC to BDC2.

2 The crankshaftcrankshaft harnesses the force produced by the downward thrust of the The exhaust strokeexhaust stroke removes the burned gases from the engine and readies the cylinder for a fresh charge of air and FundamentalsEngine Fundamentals4 Piston StrokePiston Stroke5 CrankshaftCrankshaft6 Engine FundamentalsEngine FundamentalsFour-Stroke Cycle7 Engine FundamentalsEngine Fundamentals4. The valve liftervalve lifter usually rides on the cam lobes and transfers motion to the rest of the valve The connecting rodconnecting rod fastens the piston to the The flywheelThe flywheel is mounted on the rear of the FundamentalsEngine FundamentalsConnecting Rod9 Engine FundamentalsEngine FundamentalsValve Train10 Engine FundamentalsEngine Fundamentals117.

3 The engine blockengine block forms the main body of the The compression strokecompression stroke squeezes the air-fuel mixture to prepare it for FundamentalsEngine Fundamentals129. The intake strokeintake stroke draws fuel and air into the The power strokepower stroke burns the air-fuel mixture and pushes the piston down with tremendous FundamentalsEngine Fundamentals13zTwo timing gears are used to drive the camshaft one on the crankshaft and one on the camshaftzCam gear is twice the size of the crank gear provides a 2.

4 1 reductionEngine FundamentalsEngine Fundamentals14 Timing GearsTiming GearsTiming marks show the technician how to install the gears properly15 Engine FundamentalsEngine FundamentalsPiston RingsPiston Rings16 Engine FundamentalsEngine FundamentalsCamshaftCamshaft17 Engine ManifoldsEngine Manifolds18 DOHC Timing ChainDOHC Timing Chain1911. Main bearing12. Connecting rod13. Crankcase14. Piston assembly 15. Head bolt hole16. Deck17. Cylinder18. Cylinder block19. Water jacket20. Camshaft bore21. Main cap 22.

5 Crankshaft20zIdentify the major parts of a typical Automotive the four-stroke cycle. Define common engine the basic function of the major parts of an Automotive and demonstrate safe working practices related to answer ASE certification test questions that require knowledge of the basic operation of piston ObjectivesLearning Objectives