1

2 A Systems Approach PowerPoint® Presentation Prepared by René Green

3 Chapter 12

4 yChapter Overview yThis 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 yChapter Objectives yExplain the operation of the components in the air induction system, including ductwork, air cleaner/filters, and intake manifolds. yDescribe how the engine creates vacuum and how vacuum is used to operate and control many automotive devices. yInspect and troubleshoot vacuum and air induction systems.

6 yExplain the operation of exhaust system components, including exhaust manifold, gaskets, exhaust pipe and seal, catalytic converter, muffler, resonator, tailpipe and clamps, brackets, and hangers. yProperly perform an exhaust system inspection, and service and replace exhaust system components. yExplain the purpose and operation of a turbocharger.

7 yInspect a turbocharger, and describe some common turbocharger problems. yExplain supercharger operation, and identify common supercharger problems.

8 zThe Air Induction System yAir Intake Ductwork xAir cleaner/filter Air filter design Air filter service Thermostatic air cleaners.

9 yIntake manifold xServicing an intake manifold. yVacuum Systems xVacuum basics x Vacuum controls x Vacuum schematic

10 xDiagnosis and troubleshooting xVacuum test equipment

11 zExhaust System Components yExhaust Manifold

12 yExhaust Pipe and Seal

13 yCatalytic Converters

14 yMufflers yResonator

15 yTail Pipe yHeat Shields yClamps, Brackets, and Hangers

16 zExhaust System Service yExhaust System Inspection yExhaust Restriction Test yExhaust Manifold and Exhaust Pipe Servicing

17 yReplacing Exhaust System Components xReplacing leaking gaskets and seals

18 zTurbochargers and Superchargers yTurbocharger Operation xTurbocharger system xWaste gate valve

19 xIntercooler

20 xLubricating system xSpark-retard system xComputer-controlled systems yTurbocharger Inspection yWaste Gate Service yCommon Turbocharger Problems xTurbo-lag xReplacing turbocharger yTurbo Start-Up and Shutdown

21 ySuperchargers ySupercharger operation ySupercharger designs xRoots xG-Lader ySupercharger problems