Final answer:
The five primary mechanical systems of a diesel engine are the fuel system, intake system, exhaust system, cooling system, and lubrication system.
Step-by-step explanation:
The five primary mechanical systems of a diesel engine are:
- Fuel system: This system is responsible for delivering fuel to the engine for combustion.
- Intake system: This system is responsible for drawing air into the engine to mix with the fuel.
- Exhaust system: This system is responsible for expelling the exhaust gases produced during combustion.
- Cooling system: This system helps regulate the engine temperature and prevent overheating.
- Lubrication system: This system is responsible for lubricating the moving parts of the engine to reduce friction and prevent damage.