Perkins 1103D XK Systems Operation Testing And Adjusting page 10

10
Systems Operation Section
Just before the piston reaches the TC position, fuel is
injected into the cylinder via the fuel injection nozzle
(2). The air/fuel mixture ignites. The ignition of the
gases initiates the power stroke. Both the inlet and
the exhaust valves are closed and the expanding
gases force the piston downward toward the bottom
center (BC) position .
From the BC position, the piston moves upward. This
initiates the exhaust stroke. The exhaust valve (11)
opens. The exhaust gases are forced through the
open exhaust valve into the exhaust manifold (1).
Exhaust gases from exhaust manifold (1) enter the
turbine side of the turbocharger in order to turn
turbocharger turbine wheel (6). The turbocharger
turbine wheel is connected to the shaft that drives the
turbocharger compressor wheel (7). Exhaust gases
from the turbocharger, pass through the exhaust
outlet (5), and an exhaust pipe and a silencer.
Naturally Aspirated Engines
Illustration 5
Air inlet and exhaust system
(1) Exhaust manifold
(2) Fuel injection nozzle
(3) Glow plug
The components of the air inlet and exhaust system
control the quality of air and the amount of air that is
available for combustion. The air inlet and exhaust
system consists of the following components:
•
Air cleaner
•
Inlet manifold
•
Cylinder head, injectors and glow plugs
This document has been printed from SPI². Not for Resale
(4) Inlet manifold
(5) Exhaust outlet
(6) Air inlet
•
Valves and valve system components
•
Piston and cylinder
•
Exhaust manifold
KENR6912
(7) Inlet valve
(8) Engine cylinder
(9) Exhaust valve
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