🔍 Key Concepts
• Basic diesel engine systems: intake/air system, fuel system, cooling system, lubrication system, crankcase ventilation
• Combustion requirements in a diesel: what two things must enter the cylinder for combustion to occur?
• Difference between air intake vs. fluid (oil/water) circulation systems
💭 Think About
• Ask yourself: which system name logically connects to handling air, and which systems logically handle oil, water, or crankcase gases?
• Think about what a diesel engine actually draws in through its valves during the intake stroke – is it oil, water, air, or crankcase vapors?
• Which listed function is directly tied to making sure there is enough oxygen for fuel to burn inside the cylinders?
✅ Before You Answer
• Verify which medium (air, oil, or water) is brought in from outside the engine through an intake manifold and filters.
• Check which other dedicated systems (by name) normally handle lubrication and cooling on a diesel engine.
• Confirm that the function you choose is clearly linked to supporting combustion and gas exchange in the cylinders, not to moving fluids in closed internal circuits.