mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines are preferred in heavy duty vehicles

Answers were Sorted based on User's Feedback



mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / harsh

Because petrol engine can give high speed but with small load carrying capacity when other side diesel engine gives lesser speed as compare to petrol engine but with very high load carrying capacity. Thats why it is use in trucks.

Is This Answer Correct ?    16 Yes 1 No

mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / chikoo

Compression ration in Diesel engine is hingh than that of Petrol Engine.

Is This Answer Correct ?    6 Yes 1 No

mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / jerry

diesel engines are preferred in heavy duty trucks because the ignition process is dependent on coalition of molecules and this is attainable with a higher compression ration where as petrol engines depends on the volatility and flash point of petrol 

Is This Answer Correct ?    3 Yes 0 No

mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / ansari

Compression efficiency of diesel engine is more than petrol engine b/c in diesel engine air is compressed first then fuel is injected and air can be compressed without combustion where as in case of petrol engine air fuel mix is compressed together and hence higher compression is not possible. Diesel engine run on 4 stroke and petrol on 2 stroke. Diesel engine are heavier as more heat is produced and normally water cooled. Petrol engine are normally air cooled. and a lot more to discuss.

Is This Answer Correct ?    0 Yes 0 No

mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / ankushkalia

In case of heavy vehicles, more torque is require. More torque comes from larger stroke and large stroke means high compression ratio. Diesel engines have high compression ratio. For same temperature and pressure, diesel engines are more efficient.

Is This Answer Correct ?    0 Yes 0 No

mechanical efficiency is high in petrol engines compared to diesel engines but why diesel engines ar..

Answer / latchu

Petrol engine can install less spaces
But diesel engine required large space....

Is This Answer Correct ?    1 Yes 4 No

Post New Answer

More Mechanical Engineering Interview Questions

List some boiler accessories

5 Answers  


What is the purpose of scrapper ring

2 Answers  


substance is flowing in a pipe of 200 mm inside cylinder diameter ot an average velocity of 3m/sec. At a given section of the pipe line the pressure is 1.5 MN/m² absolute. what is the flow work of 0.5 cubic meter, expressed in joules passing through section? (a)1J, (b)75000J, (c)90000J, (d)25000J

1 Answers  


• What are the next steps in the interview process?

1 Answers   Petro Star Mount,


The yield point in fatigue loading in comparison to yield point in static loading is: (a)Same (b)lower (c)Higher (d)Half (e)Twice

13 Answers   BMC,






THIS IS HARI PRASAD. WHAT I WANT TO KNOW IS ABOUT AUTOMOTIVE HVAC SYSTEM. IF ANY ONE KNOWS ABT HVAC OR INFORMATION RELATED SITES.PLZ FORWARD TO HARI.THOTA@YAHOO.COM

3 Answers  


What is hysteresis

0 Answers  


Who are the leaders among expansion valve manifacturers? what are the recent developements in the expansion valve industry, used in refrigeration abd air-conditioning?

0 Answers  


What is the material used ball screw rod

0 Answers  


WHAT SHOUL BE THE RAKE ANGLE WHEN SS IS TO BE MACHINED

3 Answers   Engineers India, Engineers India Limited,


What is the purpose of a setting tank?

1 Answers  


Cantelevar beam having a point load at free end having SFD is

4 Answers  


Categories
  • Civil Engineering Interview Questions Civil Engineering (5084)
  • Mechanical Engineering Interview Questions Mechanical Engineering (4451)
  • Electrical Engineering Interview Questions Electrical Engineering (16631)
  • Electronics Communications Interview Questions Electronics Communications (3918)
  • Chemical Engineering Interview Questions Chemical Engineering (1094)
  • Aeronautical Engineering Interview Questions Aeronautical Engineering (239)
  • Bio Engineering Interview Questions Bio Engineering (96)
  • Metallurgy Interview Questions Metallurgy (361)
  • Industrial Engineering Interview Questions Industrial Engineering (259)
  • Instrumentation Interview Questions Instrumentation (3014)
  • Automobile Engineering Interview Questions Automobile Engineering (332)
  • Mechatronics Engineering Interview Questions Mechatronics Engineering (97)
  • Marine Engineering Interview Questions Marine Engineering (124)
  • Power Plant Engineering Interview Questions Power Plant Engineering (172)
  • Textile Engineering Interview Questions Textile Engineering (575)
  • Production Engineering Interview Questions Production Engineering (25)
  • Satellite Systems Engineering Interview Questions Satellite Systems Engineering (106)
  • Engineering AllOther Interview Questions Engineering AllOther (1379)