Government Engineering College, Patan
Mechanical Engineering Department
Subject-Internal combustion Engine
Assignment
1. What
Are the Objectives of Supercharging?
2. Explain
The Effect of Supercharging
3. Enlist
and Draw Neat Sketch of Methods of Supercharging?
4. Write
the advantages and limitations of supercharging S.I and C.I engines.
5. The effect of supercharging on following
parameters.
1. Power output
2. Mechanical efficiency
3. Fuel consumption
6. What
is air fuel cycle? Explain the phenomenon of dissociation. (WINTER 2017)
7.
Enumerate the desirable properties of a fuel for I.C. engines. (WINTER 2017)
8.
Derive an expression for air-fuel ratio of IC engine for neglecting
compressibility of air. (WINTER 2017)
9. Define:
HUCR, Octane number and Cetane number. (WINTER 2017)
10. List
assumptions for fuel air cycle. (WINTER 2018)
11. List
the losses in actual fuel-air cycle and explain any three in detail. (WINTER
2018)
12.Explain
the variation in specific heat and loss due to it in an Otto cycle with the
help of P-V diagram. (SUMMER 2018)
13.Mention
the assumptions made in air-standard cycle analysis of I.C. engine. (SUMMER
2018)
14.What
is stoichiometric air fuel ratio? Find stoichiometric air fuel ratio for
Isooctane. (SUMMER 2018)
15.Explain
requirement of air fuel mixture ratio at various working condition of SI engine
with suitable diagrams(SUMMER 2018)
16.Discuss
the difference between actual auto cycle Engine and diesel cycle engine. SUMMER2019)
17.What
are the effects of variable specific heats on Otto cycle and Diesel Cycle? SUMMER2019)
18.Discuss
the fuel supply systems in Diesel Engine and mention the merits and demerits of
each. SUMMER2019)
19.
Explain valve timing diagram of 4 stroke petrol engine.[dec-2018]
20.
Explain with neat sketch valve timing diagram for diesel engine. Also explain deviation of an actual cycle from an
ideal cycle. [may-2016]
21. A
fuel represented by the formula C8H16 is used in an I.c Engine. Calculate
percentage analysis of the product on mass and molar basis.
