ASE A9 Domain 4: Lubrication and Cooling Systems Diagnosis and Repair Welcome to your ASE A9 Domain 4: Lubrication and Cooling Systems Diagnosis and Repair 1. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair What is the primary function of the engine oil pump in a diesel engine? A. To control coolant flow B. To pressurize the fuel system C. To circulate oil for lubrication D. To regulate exhaust emissions None 2. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair In a diesel engine, what is the purpose of the oil pressure relief valve? A. To regulate coolant temperature B. To control fuel injection timing C. To prevent excessive oil pressure D. To increase exhaust gas recirculation None 3. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair Which component in the lubrication system is responsible for removing contaminants and debris from the engine oil? A. Oil filter B. Oil pump C. Oil pressure switch D. Oil cooler None 4. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair In a diesel engine's cooling system, what is the function of the thermostat? A. To regulate fuel injection B. To control oil pressure C. To maintain proper coolant temperature D. To adjust exhaust gas recirculation None 5. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair What type of coolant is commonly used in modern diesel engines due to its excellent heat transfer properties and corrosion protection? A. Distilled water B. Engine oil C. Ethylene glycol-based D. Diesel fuel None 6. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair What is the purpose of the cooling system's radiator cap? A. To control fuel injection B. To regulate coolant flow C. To maintain oil pressure D. To raise exhaust gas recirculation rates None 7. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair In a diesel engine, what does the EGR (Exhaust Gas Recirculation) system do? A. Increases coolant flow B. Reduces oil pressure C. Recirculates exhaust gases D. Regulates fuel injection None 8. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair What is the primary purpose of the intercooler in a turbocharged diesel engine? A. To control oil pressure B. To improve fuel efficiency C. To increase exhaust emissions D. To cool and densify intake air None 9. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair In a diesel engine's lubrication system, what is the function of the oil pressure switch? A. To regulate coolant flow B. To control exhaust gas recirculation C. To monitor oil pressure D. To adjust fuel injection timing None 10. ASE A9: Lubrication and Cooling Systems Diagnosis and Repair What is the primary purpose of the water pump in a diesel engine's cooling system? A. To control oil pressure B. To regulate fuel injection C. To circulate coolant D. To adjust exhaust gas recirculation None 1 out of 10 Time is Up! Time's up
