A Systems Approach Automotive Technology PowerPoint® Presentation Prepared by René Green
Chapter 6 Automotive Engines
Automotive Engines Chapter Overview This chapter introduces the internal combustion engine. It discusses the variety of designs in popular usage today. It also offers a general introduction to engine diagnosis and testing.
Automotive Engines Chapter Objectives Describe the various ways in which engines can be classified. Explain what takes place during each stroke of the four-stroke cycle. Outline the advantages and disadvantages of the in-line and V-type engine designs. Define important engine measurements and performance characteristics, including bore and stroke, displacement, compression ratio, engine efficiency, torque, and horsepower.
Automotive Engines Explain how to evaluate the condition of an engine. List and describe nine abnormal engine noises. Outline the basics of diesel, rotary, stratified and Miller-cycle engine operation.
Automotive Engines Engine Construction Engine Classifications Operational Cycles Four-stroke cycle Two-stroke cycle Number of Cylinders Cylinder Arrangement
Automotive Engines Valve Train Type Ignition Type Cooling System Type OHC OHV DOHC Ignition Type Cooling System Type Fuel Type
Automotive Engines Four-Stroke Gasoline Engines Intake Stroke Compression Stroke Power Stroke Exhaust Stroke
Automotive Engines Two-Stroke Gasoline Engines Characteristics of Four-Stroke Engine Design In-Line Engines V-Type Engines Slant Cylinder Engines Opposed Cylinder Engines
Automotive Engines Valve and Camshaft Placement Configurations Overhead valve Overhead cam Valve Arrangement L-head engine design I-head engine design T-head engine design F-head engine design Valve and Camshaft Operation
Automotive Engines Gasoline Engine Systems Engine Location Front engine longitudinal Front engine transverse Mid-engine transverse Gasoline Engine Systems Air/Fuel Systems Ignition Systems Lubrication System Cooling System
Automotive Engines Engine Measurement and Performance Exhaust System Emission Control System Engine Measurement and Performance Bore and Stroke
Automotive Engines Displacement Compression Ratio Engine Efficiency Torque and Horsepower
Automotive Engines Engine Identification Engine Diagnostics Engine Temperature Tests Oil Pressure Testing Evaluating the Engine's Condition Noise Diagnosis Using a stethoscope Common noises Ring noise Piston slap
Automotive Engines Other Engine Designs Diesel Engine Rotary Engine Piston pin knock Ridge noise Rod-bearing noise Main or thrust bearing noise Tappet noise Abnormal combustion noises Other Engine Designs Diesel Engine Rotary Engine
Automotive Engines Stratified Charge Engine Miller-cycle Engine Electric Motors Hybrid Vehicles