CH10 - CHAPTER TEN High-Performance Engines Objectives You...

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CHAPTER TEN High-Performance Engines
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Objectives You should be able to: Describe various intake manifold and combustion chamber designs that improve engine performance. Explain camshaft valve train and exhaust manifold modifications that improve engine performance.
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Objectives (Cont’d) Explain turbocharger operation, including how the turbocharger improves engine performance. Explain turbocharger boost pressure control. Explain supercharger operation. Perform cylinder head porting operations. Measure and correct combustion chamber clearance volume.
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Objectives (Cont’d) Perform connecting rod beaming operations. Explain engine balancing procedures. Diagnose turbocharger intake and exhaust leaks; test and diagnose turbocharger boost pressure. Remove and replace turbochargers. Measure axial turbocharger shaft movement.
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Objectives (Cont’d) Measure turbocharger wastegate linkage stroke. Diagnose supercharger operation and boost pressure. Remove and replace superchargers.
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Methods of Improving Volumetric Efficiency Intake manifold design Individual curved, tuned runners Dual runners with different lengths and butterfly valves in the high speed runners Fuel system design Dual intake runners with injectors in each
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Methods of Improving Volumetric Efficiency (Cont’d) Combustion chamber design Increased compression ratio Hemispherical or pentroof combustion chamber Larger valves Four valves per cylinder
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Methods of Improving Volumetric Efficiency (Cont’d) Camshaft Increased valve lift Longer duration of valve opening Increased valve overlap
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CH10 - CHAPTER TEN High-Performance Engines Objectives You...

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