1

2

A Systems Approach

PowerPoint® Presentation

Prepared by

René Green

3

Chapter 12

4

Chapter Overview This chapter covers all the recent advances in intake

and exhaust systems. Among these are thermostatic air cleaners, catalytic converters, turbochargers, and superchargers. There is some attention given to inspection and replacement of various components.

5

Chapter Objectives Explain the operation of the components in the

air induction system, including ductwork, air cleaner/filters, and intake manifolds.

Describe how the engine creates vacuum and how vacuum is used to operate and control many automotive devices.

Inspect and troubleshoot vacuum and air induction systems.

6

Explain the operation of exhaust system components, including exhaust manifold, gaskets, exhaust pipe and seal, catalytic converter, muffler, resonator, tailpipe and clamps, brackets, and hangers.

Properly perform an exhaust system inspection, and service and replace exhaust system components.

Explain the purpose and operation of a turbocharger.

7

Inspect a turbocharger, and describe some common turbocharger problems.

Explain supercharger operation, and identify common supercharger problems.

8

The Air Induction System Air Intake DuctworkAir cleaner/filter

• Air filter design• Air filter service• Thermostatic air

cleaners.

9

Intake manifoldServicing an

intake manifold. Vacuum Systems

Vacuum basics Vacuum controls

Vacuum schematic

10

Diagnosis and troubleshooting

Vacuum test equipment

11

Exhaust System Components Exhaust Manifold

12

Exhaust Pipe and Seal

13

Catalytic Converters

14

Mufflers Resonator

15

Tail Pipe Heat Shields Clamps, Brackets,

and Hangers

16

Exhaust System Service Exhaust System Inspection Exhaust Restriction Test Exhaust Manifold and Exhaust Pipe Servicing

17

Replacing Exhaust System ComponentsReplacing

leaking gaskets and seals

18

Turbochargers and Superchargers Turbocharger

OperationTurbocharger

systemWaste gate valve

19

Intercooler

20

Lubricating systemSpark-retard systemComputer-controlled systems

Turbocharger Inspection Waste Gate Service Common Turbocharger Problems

Turbo-lagReplacing turbocharger

Turbo Start-Up and Shutdown

21

Superchargers Supercharger

operation Supercharger

designsRoots G-Lader

Supercharger problems