15 Questions
What is the purpose of the air-starting valves fitted in the cylinder heads?
To direct high-pressure air to each cylinder during its power stroke
What should be done before starting up to ensure prompt delivery of lubricating oil to all the moving parts?
Fill all lubricators and open the feeds
What happens after the engine turns on compressed air?
The engine operates by burning fuel in all cylinders
What can cause pistons, cylinder walls, fuel injectors, and exhaust valves to become coated with deposits?
Leaking nozzle or pump check valves
What may result from improper fuel oil selection?
Incomplete combustion of the fuel
What is the main issue with using an open cooling system for a diesel engine?
The build-up of environmental contaminants in the cooling water
In a closed cooling system for a diesel engine, what keeps the engine coolant pure?
Recirculation through a water or air cooled heat exchanger
What is the purpose of the shell and tube heat exchanger in a diesel engine closed cooling system?
To cool the lube oil
What problem can occur if coolant temperatures in a diesel engine exceed the manufacturer’s recommendation?
Combustion gases leaking into the crankcase
What additional function does a diesel standby generator perform?
Providing low-pressure hot water or steam from exhaust gases
How are the majority of stationary industrial type diesel engines started?
Using compressed air
What is the purpose of turning the engine crankshaft during starting?
To ignite the fuel when injected into the cylinder
What is the typical air pressure for the starting motor of a diesel engine?
1400 kPa
What is done to emergency generators powered by diesel engines to ensure quick and reliable starting?
Continuous circulation of warm oil
What operates the air-distributing device in some diesel engines?
Camshaft
Test your knowledge of diesel engine operation with these general remarks and operating notes. Learn about starting procedures, manufacturer instructions, and other important considerations for operating diesel engines.
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