Question 48Motor Plants - Assistant Engineer
70% to passThe degree of fuel atomization in a diesel engine cylinder depends primarily on_______________.
Athe size of the holes in the fuel nozzle
Btiming of the pump
Csupply pressure to the pump
Dshape of the combustion chamber
AI Explanation
You are correct, the answer is A) the size of the holes in the fuel nozzle. The degree of fuel atomization in a diesel engine cylinder is primarily determined by the size of the holes in the fuel nozzle. Smaller nozzle holes create a finer fuel spray, which allows for more complete combustion by increasing the surface area of the fuel particles exposed to air. This results in better fuel efficiency and reduced emissions. The other options, B) timing of the pump, C) supply pressure to the pump, and D) shape of the combustion chamber, while also important factors, are secondary to the nozzle hole size in determining the degree of fuel atomization.
Related Questions
Q139:The diesel engine water inlet jumper illustrated is represented by the letter or... Q472:Lube oil in the fresh water cooling system of a diesel engine may result from a_... Q242:Mechanical lubricators for diesel engine cylinders are usually small reciprocati... Q171:Hydraulic starters are installed on many lifeboat diesel engines instead of comp... Q118:In the slow-speed diesel engine shown in the illustration, the part labeled "E" ...
Ready to test your knowledge?
Take a Motor Plants - Assistant Engineer Practice ExamOfficial Resources