A Series Diesel Engine Air System 98
Air System
Air System Flow
The engines are available in naturally aspirated,
turbocharged.
Air is pulled into the engine from an air filter. Clean air
is very important to the life of the engine. Ingested
dust and dirt can damaged the cylinders very quickly.
Caution : Make sure that a quality air cleaner is used
and that it is periodically replaced
according to the manufacturer’s
recommendations.
Intake air for naturally aspirated engines flows directly
from the filter to the intake manifold. From the intake
manifold, air is pulled into the cylinder and used for
combustion. After combustion it is forced out of the
cylinders through the exhaust manifold.
On turbocharged engines the flow is from the filter to
the turbocharger, and then through the crossover
tube to the manifold. From the intake manifold, air is
forced into the cylinder and used for combustion. The
exhaust gases flows through the turbocharger to
rotate the turbine and impeller, thereby utilizing
exhaust energy to force more air into the cylinders.
The additional air provided by the turbocharger allows
more fuel to be injected to increase the power output
from the engine. Thus, the power-to-weight ration for
the engine is increased significantly with the addition
of the turbocharger.
Air Intake System
1. Filtered air. 2. Turbocharger. 3. Air crossover tube
4. Intake manifold. 5. Intake valve port
Exhaust System
1. Exhaust valve port. 2. Exhaust manifold
3. Turbocharger turbine
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