Reg No.:

00000140 012103

Pages: 1

Name:

APJ ABDUL KALAM TECHNOLOGICAL UNIVERSITY

Seventh Semester B.Tech Degree Examination (Regular and Supplementary), December 2020

Course Name: SIMULATION AND ANALYSIS OF IC ENGINE PROCESSES
Max. Marks: 100

a)
b)

(a)
(b)

Course Code: AU409

PARTA
Answer any three full questions, each carries 10 marks.
What is meant by heat of reaction?
What are the factors on which the adiabatic flame temperature depends on?
Explain the procedure for measurement of ‏برط‎ with a neat sketch.
Illustrate an ideal Otto cycle in the p-V diagram and derive an equation for
thermal efficiency.
Discuss about SI engine simulation with adiabatic combustion under full load
conditions.
PART B
Answer any three full questions, each carries 10 marks.
Explain the terms
1. Squish
2. Swirl
3. Mach index
4. Volumetric efficiency
Derive the efficiency of an ideal diesel cycle.
List the assumptions needed for ideal cycle CI engine simulation with air as
the working medium.
Illustrate the pressure-volume diagram for a diesel engine cycle under
supercharged condition.
Explain the term “tuning and ram effect” in a combustion chamber.
PART C
Answer any four full questions, each carries 10 marks.
Discuss about trapping efficiency and scavenging efficiency of two stroke
engines.
Explain the port diagram for a two stroke engine with a neat sketch.
Compare crankcase scavenged engine and separately scavenged engine.
Explain about the flow patterns through valves.
Explain the temperature distribution and heat flow across the combustion
chamber wall with a neat sketch.
Explain any two methods used for the measurement of friction in a firing
engine.

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Duration: 3 Hours

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