Workshop Manual

EPA07/10 DD PLATFORM WORKSHOP MANUAL - ENGINE

9.1 DESCRIPTION AND OPERATION OF THE DD13 TURBOCHARGER

AND RELATED PARTS

Compression of air in the turbocharger causes an air mass to ﬂow into the combustion chamber.

The turbocharger consists of a turbine and a compressor which are attached to a shaft. The

exhaust gas ﬂows to the turbine wheel and causes it to turn. This turning motion is transmitted

to the shaft and the compressor impeller. The intake air from the air ﬁlter is compressed by the

compressorimpellerandﬂows over a charge air pipe to the charge air cooler. T he compressed air

is cooled in the charge air cooler, permitting a more dense charge of air to be delivered to the

engine, and therefore, engine output is increased. The charge air then passes from charge a ir

cooler into the intake manifold. The turbocharger is mounted on the exhaust outlet ﬂange of the

engine exhaust manifold.

The turbocharger is mounted on the exhaust outlet ﬂange of the engine exhaust manifold.

The advantages are as follows:

□ Increases the engine performance and torque

□ Reduction of the fuel consumption compared to a similarly powered naturally aspirated

engine

□ Reduction of emissions.

All information subject to change without notice.