TM 5-4310-452-14
1-12. GENERAL (Con't).
3. Fuel Tank Filler Cap
13. Automatic Blowdown Valve
4. Air Cleaner Assembly
14. Starter Motor and Solenoid
5. Restriction Indicator
15. Slave Receptacle
B. Exhaust Pipe
16. Alternator
7. 01 Cooler Fan
17. Storage Batteries
8. ON Filter Assembly
18. Minimum Pressure and Service Valve
9. Housing
19. Belt Break Switch
10. ON Separator
20. Fuel Tank
11. ON Temperature Bypass
21. Engine Cooing Blower
12. Muffler
1-13. ENGINE.
a.
The engine for this unit is a Deutz, direct injection, air-cooled, four-stroke diesel.
b.
The strokes of a four-cycle diesel engine are as follows:
(1)
Intake Stroke. Air enters the cylinder through the air inlet valves and is drawn Into the cylinder by the
suction force created by the piston as it moves from a top position to a bottom dead center position.
(2)
Compression Stroke. After the piston has passed bottom dead center, the air inlet valve closes. As the
piston moves upward, the air is compressed and reaches a temperature of 1000°F-1200°F (538° C-649°C). Shortly
before the piston reaches top dead center, fuel Injection into the cylinder is started.
(3)
Power Stroke. The atomized fuel spray injected into the cylinder is immediately ignited by the high
temperature of the compressed hot air, and burning continues as the hot gases of combustion expand and force the
piston downward. Combustion proceeds until the end of fuel injection. Shortly before the piston reaches bottom dead
center, the exhaust valve opens.
TA505388
1-12
