B.TechSemester 52023-24I C Engine Fuels LubricationKME054
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I C Engine Fuels Lubrication (KME054) - AKTU Question Paper 2023-24

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU I C Engine Fuels Lubrication Previous Year Question Paper for B.Tech Semester 5, academic session 2023-24. Published by Dr. A.P.J. Abdul Kalam Technical University (AKTU/UPTU), Lucknow. Free PDF download — no login required.

Course:B.Tech
Semester:Semester 5
Session:2023-24
University:AKTU / UPTU

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Questions Asked in 2023-24

I C Engine Fuels Lubrication (KME054) — complete question paper · 100 marks · 3 Hours

Section AAttempt all q u e s t i o n s i n b r i e f .
  • a
    How will you differentiate between two stroke engine and four stroke engines?
  • b
    What is the relation between m ean effective pressure and mean pressure of an IC engine?
  • c
    Explain – (i). Pre-ignition (ii) . Auto-ignition (iii). Detonation. 2 2
  • d
    Why is spark advance required? Discuss the factors that affect ignition timing
  • e
    What is the principle in carburetion? 2 3
  • f
    What are the basic requirement s of fuel injection in CI engines? 2 3
  • g
    What are the advantages and disadvantages of PNG? 2 4
  • h
    What causes the S.I. engine's emissions of hydrocarbons? 2 4 i. Does the cooling of the engine components come from the lubric ation system? How come? j. Why can't petrol (gasoline) be used in a compression ignition (CI) engine or diesel be fed to a spark ignition (SI) engine?
Section BAttempt any three o f t h e f o l l o w i n g :
  • a
    What a theoretical valve timing diagram is different from ac tual valve timing diagram (with diagram). Explain effect of each valve ope nings and closing with their range of angle values
  • b
    Explain that the requirement o f air motion and swirl in CI e ngine combustion chamber is much more stringent that in an SI Engine
  • c
    What do you mean by MPFI System? Give the difference between L- MPFI & D- MPFI System
  • d
    Which are the alternative fuels for I.C. Engine? Write a sho rt note on some of them
  • e
    What do you understand by igni tion timing discuss various fa ctors which affect the ignition timing?
Section CAttempt any one p a r t o f t h e f o l l o w i n g :
  • a
    What is the basic difference between Otto cycle & Diesel cyc le? Deduce the expression of work done, thermal efficiency and mean effect ive pressure for Diesel cycle. I C ENGINE, FUELS & LUBRICATION
  • b
    An oil engine works on Dual cycle having compression ratio o f 10. The pressure and temperature at the beginning of compression stroke are 1 bar and 27 0C respectively. If the maximum pressure reached is 30 bar and the maximum temperature of the cycle is 1200 0C, calculate: (i) the temperature at the end of constant volume heat addition (ii) cut-off ratio (iii) work output (iv) efficiency of the cycle Take C v = 0.718 kJ/ kg K and Cp = 1.005 kJ/ kg K for air
  • a
    What does "delay period" mean? What variable influences the delay period?
  • b
    How does a flame front propaga te? Discuss the factors affect ing the flame speed?
  • a
    Discuss briefly the scave nging in 2-stroke engine. 10 3
  • b
    With the help of neat sketch explain the working principle o f simple carburetor
  • a
    What are the major sources of air pollutants? What all pollu tants are emitted by I. C. engines?
  • b
    Explain catalytic convertor a s after treatment device to control CO, HC & NOX
  • a
    How the valve timing is controlled in the stratified charge injection engine. Explain with neat sketch
  • b
    Explain the construction and working of battery ignition sys tem with a neat sketch

Question text is extracted from the official AKTU question paper PDF above. Hindi translations are omitted — every question is printed in English in the original paper. Last verified: 2026-08-23.

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