2. A Systems Approach Automotive Technology PowerPoint® Presentation
Prepared by
René Green

3. Chapter 6
Automotive Engines

4. 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.

5. 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.

6. 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.

7. Automotive Engines Engine Construction Engine Classifications
Operational Cycles
Four-stroke cycle
Two-stroke cycle
Number of Cylinders
Cylinder Arrangement

8. Automotive Engines Valve Train Type Ignition Type Cooling System Type
OHC
OHV
DOHC
Ignition Type
Cooling System Type
Fuel Type

9. Automotive Engines Four-Stroke Gasoline Engines Intake Stroke
Compression Stroke
Power Stroke
Exhaust Stroke

10. Automotive Engines Two-Stroke Gasoline Engines
Characteristics of Four-Stroke Engine Design
In-Line Engines
V-Type Engines
Slant Cylinder Engines
Opposed Cylinder Engines

11. 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

12. 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

13. Automotive Engines Engine Measurement and Performance Exhaust System
Emission Control System
Engine Measurement and Performance
Bore and Stroke

14. Automotive Engines Displacement Compression Ratio Engine Efficiency
Torque and Horsepower

15. 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

16. 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

17. Automotive Engines Stratified Charge Engine Miller-cycle Engine
Electric Motors
Hybrid Vehicles