ENGINE AIR INTAKE SYSTEM (Vehicle S/N 100,001 to 199,999)

TM 9-2320-391-10

M1078A1 SERIES THEORY OF OPERATION -

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ENGINE AIR INTAKE SYSTEM (Vehicle S/N 100,001 to 199,999)

The Engine Air Intake System consists of a dry-type air cleaner, turbocharger, and a

Charge Air Cooler (CAC). The turbocharger increases engine horsepower by increasing

the density of air delivered to the engine. An internal wastegate regulates the degree to

which the turbocharger compresses the air. The compressed air is then delivered to the

CAC. The air flows through the CAC which cools the air before it is delivered to the engine

cylinders. The air aspiration tubes pass the cooled and compressed air to the engine inlet

manifold. The compressed air/fuel mixture allows more complete burning of the fuel. The

result is an increase in horsepower and lower emissions.

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