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Published On: Tue, Oct 4th, 2016

Mechanical Engineering and Automotive Engineering doubts answered. 

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Many of our subscribers were requesting for a single platform where they can ask there doubts on mechanical engineering and automobile engineering. Some of them were interested in topics related to how cars work and other on details on hydraulic machineries and construction equipments. 

Also get audio updates on the above subjects on Whatsapp @ +919744615655 ( just send us a Whatsapp message with your Name)

Just drop your doubts in the comment section below and get it answered. 

Displaying 34 Comments
Have Your Say
  1. Snehal says:

    Why the engine working on petrol is not working on deisel ??

  2. abhinav padmanabhuni says:

    What happens if we fill petrol in diesel engine and vise versa…

    • Thomas says:

      Hi Abhinav,

      Thanks for contacting us…

      Diesel engines/CI engines works on the principle of compression ignition.In a diesel engine the compression ratio is so high that inside the combustion chamber even without a spark the fuel burns.So if we fill petrol inside a diesel engine combustion chamber even before completing the diesel cycle pre detonation will occur which will damage the engine.Fuel pump will also be damaged because it has very fine tolerances and the lubrication is also done by diesel circulating in it.

      Now if we fill diesel in a petrol engine,the diesel fuel needs to be compressed to get inginted and in a the petrol engine cylinder the compression ratio is pretty less .so even if the spark is introduced diesel won’t burn easily inside the combustion chamber.So once diesel reaches the engine it would stall.

      Filling DIESEL IN A PETROL ENGINE CAUSES LESS DAMAGE WHEN COMPARED TO filling PETROL ON DIESEL ENGINE

    • Thomas says:

      Hi Sneha,

      Thanks for contacting us…

      Diesel engines/CI engines works on the principle of compression ignition.In a diesel engine the compression ratio is so high that inside the combustion chamber even without a spark the fuel burns.So if we fill petrol inside a diesel engine combustion chamber even before completing the diesel cycle pre detonation will occur which will damage the engine.Fuel pump will also be damaged because it has very fine tolerances and the lubrication is also done by diesel circulating in it.

      Now if we fill diesel in a petrol engine,the diesel fuel needs to be compressed to get inginted and in a the petrol engine cylinder the compression ratio is pretty less .so even if the spark is introduced diesel won’t burn easily inside the combustion chamber.So once diesel reaches the engine it would stall.

      Filling DIESEL IN A PETROL ENGINE CAUSES LESS DAMAGE WHEN COMPARED TO filling PETROL IN DIESEL ENGINE

  3. Aravind Jayan says:

    Can you suggest me the name of the materials that can absorb the pollutants emitting from diesel engine after combustion inorder to absorb the harmful oxides coming out from the vehicle engine. Or is there any device that can be used for controlling such emmissions

  4. Piyush Jadiya says:

    I want to study the dynamics of suspension geometry.

  5. hareesh Jatti says:

    Can I get some information regarding
    Deflection of the Beams!!!??

  6. Hemanth says:

    Can you explain me the function of spark plug in bikes?

    • Thomas says:

      Hello Hemant,

      Thanks for contacting us..

      In SI (Spark Ignition) engines where we use petrol the compression ratio is comparatively less when compared to diesel engines.So in order to burn petrol inside the engine combustion chamber in SI engines we need an external agent for ignition(Hence the name SI engine) which is done by a spark plug.

  7. AMAN SONI says:

    I want to be cleared in my subjects

  8. Rishi says:

    Hi!
    What’s the lowest, average and the highest horse power produced?

    • Thomas says:

      Hi Rishi,

      Thankyou for contacting us.Could you please specify on what bases are you making such a classification?!Did you mean the lowest possible HP engines/Car?

  9. krishnendu says:

    I want to know about flywheel and crank shart… And please explain principal axis

  10. ashwin says:

    Which fluid is used in an fluid coupling torque converter.

    • Thomas says:

      Hi Ashwin

      Thankyou for contacting us.

      Low viscosity fluids like motor oils or automatic transmission fluids are used.By increasing density of the fluid more torque can be transferred.

  11. ashwin says:

    [11:00AM, 06/10/2016] ashwin: Which type of fluid used in an fluid coupling torque converter
    [11:01AM, 06/10/2016] ashwin: 1bhp=?rpm and 1Nm=?rpm
    [11:03AM, 06/10/2016] ashwin: 1bhp =?torque

  12. Samir Ranjan dwibedy says:

    Sir can you tell me the difference between ‘CC’ in petrol and ‘liter’ in diesel engine

    • Thomas says:

      Hi samir,

      Thankyou for contacting us.CC and Litre essentially are the same.CC stands for Cubic Centimetre.2000CC is equivalent to 2.0 litres.The CC of the engine basically describes the displacement volume of the engine, that is the volume covered by the stroke of the piston multiplied by the number of cylinders an engine has. Larger displacement can hold more fuel air mixture,thus more power.

      Displacement=No of cylinders *cross section *stroke length)

  13. Rashnana says:

    How can one perform bleeding in a engine

  14. Shamsudheen says:

    How Temperature gauge function , of which it indicate temperature of Coolant or Oil or Head??

  15. Shanith says:

    Sir what are the main things to maintain to get maximum mileage in diesel car ?

  16. avinas says:

    Want some detail facts on fuel injection nd carburretors

  17. Shamsudheen says:

    Hello
    Thank you for your lecture , appreciate and its very clear and understandable thanks again.
    And also i have one question that
    How to calculate speed of vehicle with

  18. Ishan gaba says:

    I want best medium to understand Applied mechanics

  19. Akash Bansal says:

    How does a train turns when multiple tracks on its way?

  20. Sharath says:

    Hello sir. Is it possible to explain me about the steering axis inclination l. SAI. And how the steering come back to position back by the help of caster.. what happens if the camber is set to 0 in both front and rear axle. And doing so on toe too. And kerping caster positive as it self…

    Thank u sir.. 🙂 🙂

  21. Suthar Harshil says:

    I Have an issue with Maruti omni
    That this car engine rpm automatically increases anytime UpTo 2000 rpm I have check accelerator cable but in dash board engine malfunction light is on so there is a issue with air fuel mixture or something else

  22. Suthar Harshil says:

    I Have an issue with Maruti omni
    That this car engine rpm automatically increases anytime UpTo 2000 rpm I have check accelerator cable but in dash board engine malfunction light is on so there is a issue with air fuel mixture or something else

  23. Tejas Shah says:

    Can you pls explain meter in and meter out circuits??

  24. bhavik savaliya says:

    I want. To know about how to make model about mechanical vapour compression water desalination model

  25. Devendra says:

    hey
    i want to know about plenum?
    means working of plenum, how to design,material to be used and factors to be considered while designing of plenum?

  26. Karthik says:

    Can I get any video or information regarding voltage dip limiter which is used in eco start stop system. This VDL is brought into system to eliminate eco start stop battery.

  27. Akash says:

    Sir why duke engines are not commonly used
    And also I have seen in a video that the cylinder is also revolving with the pistons
    So if the cylinder is revolving the intake charge and exhaust gas can leak through the cylinder.Because the head of cylinder is not fix
    I also want to know why the crankshaft is revolving in opp direction in a Duke engine

  28. RUDRESH says:

    I want to know about the basics of Jigs and fixtures..

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