B.TechSemester 52022-23I C Engines Fuels LubricationKME054
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I C Engines Fuels Lubrication (KME054) - AKTU Question Paper 2022-23

B.Tech · Semester 5 · Free PDF Download

This is the official AKTU I C Engines Fuels Lubrication Previous Year Question Paper for B.Tech Semester 5, academic session 2022-23. 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:2022-23
University:AKTU / UPTU

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Questions Asked in 2022-23

I C Engines Fuels Lubrication (KME054) — extracted question text

Section AAttempt all questions in brief. 2x10 = 20
  • a
    Define the term Heat Engine
  • b
    Define the term swept volume
  • c
    Explain the term “Igni tion Delay” in CI engines
  • d
    Explain the term “Flame Speed” in SI engines
  • e
    Discuss the injection timings
  • f
    Discuss the term “Stoichiometric Ratio”
  • g
    Explain Cetane Number and Diesel Index for fuel
  • h
    Explain performance Number and HUCR for fuel. (i) Define stratif ied charge engine. (j) Explain working of Radiator
Section BAttempt any three of the following: 10x3 = 30
  • a
    Discuss an expression for th ermal efficiency of air standar d Diesel Cycle. Also discuss the classification of I C en gines
  • b
    Explain with diagram the sta ges of combustion for SI engine . And discuss about combustion chamber design for SI engine
  • c
    Evaluate the working of MPF I and its different types with the help of neat and clean diagrams
  • d
    Illustrate dopes. Classify so me of the additives used for S.I. and C.I. Engines. Also give merit and demerits of additives
  • e
    Summarize the requirements of a good cooling System and compare air and liquid cooling system in brief
Section CAttempt any one part of the following: 10x1 = 10
  • a
    An I.C. engine working on Di esel cycle has bore 200 mm, str oke 300 mm. if the clearance volume is 420 cc and fuel injection takes place at the constant pressure for 5% of the stroke, determine the therm al efficiency of the engine. If the cut-off is delayed from 5 to 8% what will be the percentage loss in effici ency in both cases, the compres sion ratio is the same?
  • b
    Compare the diesel, dual and otto cycles for following cases (i) Same heat input and compression ratio (ii) For constant maximum pressure and same heat input (iii) For same maximum pressure and temperature
  • a
    Demonstrate phenom enon of knock in S.I. Engine. Discuss the effects of knock in S.I. engines and methods reduce the detonation
  • b
    Demonstrate combustion proces s and its phases in CI engine with neat sketch. Also enlist the affecting factors of flame speed
  • a
    Derive an expression for the calculation of exact A-F ratio when air is considered as incompressible
  • b
    Derive an expression for the quantity of fuel to be injected per cylinder per cycle for a four-stroke engine in terms of brake specific fuel consumption, B.P. and rpm. Determine the velocity of injection of fuel in solid injection system when the difference in oil pressure and cylinder pressure is 75 bar. Assume the specific gravity of fuel as 0.905 and coefficient of discharge for orifice is 0.86
  • a
    Discuss the alternative fuel s for IC engines also discuss the rating for SI engine fuel
  • b
    Discuss EGR system also dem onstrate the working of catalytic convertor with neat sketch
  • a
    Explain the function of lubr icants in I.C. Engines. Explain different wet lubricating system with neat sketch
  • b
    Explain the working of Magneto ignition system with neat sk etch also discuss the types of electronic ignition system

Question text is extracted from the official AKTU question paper PDF above. Check the original PDF for equations, diagrams and complete wording. Extracted: 2026-08-23.

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