Perkins 1204F-E44TA Systems Operation Testing And Adjusting page 22

22
Engine Operation
Turbochargers
Illustration 18
Typical example of a cross section of a turbocharger
(1) Air intake
(2) Compressor housing
(3) Compressor wheel
(4) Bearing
(5) Oil inlet port
(6) Bearing
(7) Turbine housing
(8) Turbine wheel
(9) Exhaust outlet
(10) Oil outlet port
(11) Exhaust inlet
The high-pressure turbocharger is mounted on the
outlet of the exhaust manifold. The low-pressure
turbocharger is mounted on the side of the cylinder
block. The exhaust gas from the exhaust manifold
enters the exhaust inlet (11) and passes through the
turbine housing (7) of the turbocharger. Energy from
the exhaust gas causes the turbine wheel (8) to
rotate. The turbine wheel is connected by a shaft to
the compressor wheel (3).
As the turbine wheel rotates, the compressor wheel
is rotated. This causes the intake air to be
pressurized through the compressor housing (2) of
the turbocharger.
This document has been printed from SPI2. NOT FOR RESALE
Illustration 19
Typical example
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(12) Wastegate actuator
(13) Actuating lever
(14) Line (boost pressure)
Illustration 20
Typical example
(15) Wastegate regulator
UENR4490-01
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