santhosh319

 Profile Answers by santhosh319 

• Oct 10th, 2010

 

Efficiency matters
Diesel engine efficiency is 45 percent
Petrol is app 25 percent

adnan mehmood

 Profile Answers by adnan mehmood Questions by adnan mehmood

• Oct 30th, 2010

 

Beacuse disel engines are compression ignition engine having compressin ratio 1:22 maximum which cannot be achived in petrol engine more CR mean more power output so we use disel engine for Heavy vehicle.

mechatronics

 Profile Answers by mechatronics 

• Nov 18th, 2010

 

Because diesel engine produce more power than compared to petrol engines so we use diesel engines for heavy loads

rakesh8014

 Profile Answers by rakesh8014 Questions by rakesh8014

• Nov 24th, 2010

 

in case of diesel engine the production of brake power for same capacity engine is more.

and diesel engines were worked in 2 stroke diesel cycle in which there is one power stroke in each revolution on the crank shaft,which results in more uniform power delivery from the engine to the drive system,which is the favourable for heavy vehicle.

all these reason were in support of diesel engine for heavy vehicle.

And in case of heavy vehicles we need more amount of torque instead of speed which is available with diesel engine , how ever there are high speed diesel engine used for some operation.

connect2darsh

 Profile Answers by connect2darsh Questions by connect2darsh

• Dec 4th, 2010

 

In an engine when you need high power output, then diesel engines are preferred, compression ratio is high in diesel engines.

suraj c

• Feb 3rd, 2015

 

The compression ratio of diesel engine and effciency, more as compared with petrol engine

Kingshuk

• Feb 9th, 2015

 

As we know, diesel engines have lower efficiency than petrol engines but the power to weight ratio required by heavy vehicles is met by the high compression ratio of diesel engines. Thats the reason its used

tarun

• Feb 21st, 2015

 

diesel engine efficiency depends upon compression ratio. CR of diesel engine is more than the petrol engine so eff. of diesel engine will be more. hence max output attained.

mohamedeltawill

 Profile Answers by mohamedeltawill 

• Mar 25th, 2015

 

Its because of the way the engine is built. Diesel engines have a very long stroke in the combustion process due to the very high compression a diesel needs to run. A rule of thumb is that longer the stroke than an engine has, the more torque you will gain.

ravi

• Mar 29th, 2015

 

The compression ratio CR for petrol engine will be in the order of 8. The CR for diesel engine will be 14. So the pulling power / torque developed will be more for diesel engines. But efficiency is concerned for the same CR the petrol engine is more efficient than diesel engine. This is because of the additional term in the negative side of the efficiency equation

puneet

• Jan 23rd, 2018

 

It provide more torque