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.

Answer / chikoo

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

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 

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.

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.

Answer / latchu

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

please inform about the date of exam of hpcl for fresh engineers recruitment in mechanical stream?

0 Answers   Mechanical, Thermal Powertech Corporation India Ltd TPCIL, TVS,

What are the examples of mechanisms?

0 Answers  

The property of a metal that is determined by the indentation on a metal surface

7 Answers   HAL,

Can we use pure oxygen in IC engines instead of air?? what would be the advantages and disadvantages of using it?? Have any steps been taken about this??

1 Answers  

what is the diffrent between centrifugal and positive displacement pump?

3 Answers  

why we use air blower instead of air compressor in STP Plant.?

1 Answers  

What pressure is highest L.O. Gravity Head or S.W. of the stern tube circulation

0 Answers   RRB,

How many lubricating holes are there in cylinder?

0 Answers  

SOMEONE POST THE MODEL APTITUDE QUESTIONS FOR MRF TYRES PLz pLZ pLZ ..Very urgent

0 Answers   MRF,

how determine the capacity of refrigeration system? how we use condenser coils, compressor, capillarity,compressor

1 Answers   AirTech,

What is the color of flame if the boiler is running in good condition? How about when it is not in good condition?

0 Answers   ABC Inc, RRB, Siemens,

PLEASE PROVIDE ME PAPER ALONG WITH QUESTION THAT ARE ASKED IN ENTRANCE EXAM EVERY YEAR/

0 Answers