Auto Engine-II 4th Sem May 2016 Automobile Diploma Paper

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Auto Engine -II 4th Sem May 2016 Automobile Diploma PSBTE Paper

SECTION-A

Q1. Fill in the blanks: – 1×10=10
a) Rotational flow of charge within the engine cylinder is called ___.
b) Time interval between start of fuel injection and its actual burning in C.I. engine is called
c) Cetane no. gives the _ quality of diesel fuel.
d) The compression ratio in automobile diesel engine is usually _ .
e) Fuel feed pump in diesel engine is mounted on _ .
f) Diesel engine emits excessive smoke during .
g) is the process of increasing air fuel mixture density in the cylinder.
h) _ engines involve rotary motion of piston.
i) Lower the of diesel fuel; high temperature is required to ignite the fuel.
j) CRDI means _____ .

SECTION-B

Q2. Attempt any five questions. 5×6=30

Q2. Short answer type. Attempt any FIVE: – 5×7=35
a) Explain the various types of combustion chambers for diesel engine.
b) Explain briefly diesel knock and cetane no.
c) What is supercharging? Describe working of turbocharger.
d) Describe briefly the working of hybrid vehicle.
e) Explain the working principle of 4-stroke diesel engine.
f) Describe briefly with neat sketch the working of fuel injector in diesel engine.
g) Discuss the main features of modern CRDI system.
h) Explain exhaust gas recirculation.

SECTION-C

Q3. Attempt any three questions. 3×10=30

Q3. Long answer type. Attempt any TWO: – 15×2=30
a) Explain in detail the various stages of combustion in diesel engine.
b) Describe in detail the layout & working of individual pump fuel injection system in diesel engine.
c) Write short note on any three: –
(i) Crankcase ventilation.
(ii) Fuel cell.
(iii) Exhaust gas recirculation.
(iv) Wheel motor.
(v) Governors.
(vi) Squish and swirl.

Auto Engine -II 4th Sem May 2016 Auto mobile Diploma PSBTE Paper

Section :- Auto Engine -II 4th Sem May 2016 Automobile Paper

Rotational flow of charge within the engine cylinder is called _______________ .

Rotational flow of charge within the engine cylinder is called _______________ .

Time interval between start of fuel injection and its actual burning in C.I. engine is called ______

Time interval between start of fuel injection and its actual burning in C.I. engine is called ______

Cetane no. gives the _____________ quality of diesel fuel.

Cetane no. gives the _____________ quality of diesel fuel.

The compression ratio in automobile diesel engine is usually _____________ .

The compression ratio in automobile diesel engine is usually _____________ .

Fuel feed pump in diesel engine is mounted on _______________ .

Fuel feed pump in diesel engine is mounted on _______________ .

Diesel engine emits excessive smoke during ______________.

Diesel engine emits excessive smoke during ______________.

__________ is the process of increasing air fuel mixture density in the cylinder.

__________ is the process of increasing air fuel mixture density in the cylinder.

_________ engines involve rotary motion of piston.

_________ engines involve rotary motion of piston.

Lower the __________ of diesel fuel; high temperature is required to ignite the fuel.

Lower the __________ of diesel fuel; high temperature is required to ignite the fuel.

CRDI means ___________ .

CRDI means ___________ .

Auto Engine -II 4th Sem May 2016 Automobile Diploma PSBTE Paper Click Here

Section B :Auto Engine -II 4th Sem May 2016 Automobile PAPER

Explain the various types of combustion chambers for diesel engine.

Types of combustion chambers for diesel engine.

Explain briefly diesel knock and cetane no.

Diesel knock and cetane no.

What is supercharging? Describe working of turbocharger.

Supercharging and working of turbocharger.

Describe briefly the working of hybrid vehicle.

Working of hybrid vehicle.

Explain the working principle of 4-stroke diesel engine.

Working principle of 4-stroke diesel engine.

Describe briefly with neat sketch the working of fuel injector in diesel engine.

Neat sketch the working of fuel injector in diesel engine.

Discuss the main features of modern CRDI system.

Main features of modern CRDI system.

Explain exhaust gas recirculation.

Exhaust gas recirculation.

Auto Engine -II 4th Sem May 2016 Automobile Diploma PSBTE Paper Click Here

Auto Engine -II 4th Sem May 2016 Auto mobile Diploma PSBTE Paper

Get Started https://www.youtube.com/watch?v=UHX6f8TIvX8https://www.youtube.com/watch?v=M_RR6LVICp0https://www.youtube.com/watch?v=mV41CMWonN4https://www.youtube.com/watch?v=s0LVPE0Q3LE&list=PLA9Q9SDZ781WXNAWit379A4CRLMvjGiUw&index=14&t=0s

Section c :-Auto Engine -II 4th Sem May 2016 Automobile PAPER

Explain in detail the various stages of combustion in diesel engine.

Various stages of combustion in diesel engine.

What is combustion chamber? Discuss the types of combustion chambers of diesel engines.

Combustion chamber and types of combustion chambers of diesel engines.

Describe in detail the layout & working of individual pump fuel injection system in diesel engine.

Working of individual pump fuel injection system in diesel engine.

Write short note on (i) Crankcase ventilation.

Crankcase ventilation.

(ii) Fuel cell.

Fuel cell.

(iii) Exhaust gas recirculation.

Exhaust gas recirculation.

(iv) Wheel motor.

Wheel motor.

(vi) Squish and swirl.

(v) Governors.

Governors.

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