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  • INTERVIEW QUESTIONS MECHANICAL ENGINEERING DETAILS
    Question :
    Which has more efficiency: Diesel engine or Petrol engines?
    Category Mechanical Engineering Interview Questions
    Rating (0.3) By 239 users
    Added on 6/20/2011
    Views 488
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    Answers:

    Off course Diesel engine has the better efficiency out of two.



    Diesel engine has better efficiency more than petrol engine.



    Posted by: vaisakh    

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    disel engine has the more efficiency because disel engine has more compression ratio due to which the combustion and the power delivered is more. it is a compression ignition engine i.e. at high pressure the ignition automatically takes place and the ignition is uniform thus giving more output.



    Posted by: Ajit    

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    disel engine has the more efficiency because disel engine has more compression ratio due to which the combustion and the power delivered is more. it is a compression ignition engine i.e. at high pressure the ignition automatically takes place and the ignition is uniform thus giving more output.



    Posted by: Ajit    

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    the mechanical efficiency of diesel engine is high as compare to petrol engine.but the thermal efficiency of petrol engine is high.



    Posted by: anshul sharma    

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    Diesel engine has more efficiency because it has more compression ratio than the petrol engine.



    Posted by: Hari    

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    The efficiency of desial engine is high compare to petrol engine becase the copression ratio of desial engine is high.



    Posted by: Brijesh singh    

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    Diesel engine has more efficiency than petrol engine because it has more compression ratio than petrol engine



    Posted by: Piyush agrawal    

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    For comparison between the two at least one variable must be same for both. For a given compression ratio i.e. a compression ratio same for both diesel and petrol engine; a petrol engine has higher mechanical efficiency.
    But in general, compression ratios for petrol engine range from 10 to 12 and that for diesel range from 14 to 16 giving diesel engine a higher efficiency in general terms.



    Posted by: arpal kochatta    

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    Diesel engine has efficiency 40% and petrol engine has efficiency 26% because of compression ratios



    Posted by: bhagavan    

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    Diesel engines have more efficiency than petrol engines due to high compression ratio and power delivered.



    Posted by: Monu Bharti    

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