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Auto Engine-II 4th Sem May 2019 Automobile Diploma Paper

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Auto Engine -II 4th Sem May 2019 Automobile Diploma PSBTE Paper

                                SECTION-A

Q1. a) Fill in the blanks.                                      10×1.5=15

i. Increase in delay period cause ____________ in knocking.
ii. Compression ratio is limited in petrol engine as more compression ratio causes __________.
iii. The valve tappet clearance is measured by _____________ .
iv. ___________ = I.H.P – B.H.P.
v. Oxygen sensor is fitted at ______________.

b) State True or False.

vi. During suction stroke, the inside pressure of cylinder is lesser than atmospheric pressure.
vii. Compression ratio of diesel engine is greater than petrol engine.
viii. The fuel feed pump in a diesel is mounted on the fuel injection pump.
ix. Nox produced in the engine at low temperature.
x. Defective fuel cause excessive knocking.

                              SECTION-B

Q2. Attempt any five questions. 5×6=30
a. Write basic difference between supercharger and turbocharger.
b. Explain the effect of engine performance in high altitude and desert.
c. Explain positive crankcase ventilation.
d. What are the effects of different pollutants on human body?
e. Explain series and parallel type Hybrid System.
f. Explain Indicated power. How we calculate it in multi cylinder engine.
g. Explain two types of supercharger.

                                     SECTION-C

Q3. Attempt any two questions. 2×15=30
i. Explain the various stages of combustion in diesel engine with neat sketch. Write methods to control knocking in diesel engine.
ii. Explain CRDI engine with neat sketch.
iii. Write short note on the following. (any two)
a) Fuel Filters and its types b) HCCI Engine c) Plunger type fuel injection pump.

Auto Engine -II 4th Sem May 2019 Auto mobile Diploma PSBTE Paper

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Section :- Auto Engine -II 4th Sem May 2019 Automobile Paper

Increase in delay period cause ____________ in knocking.

Increase in delay period cause ____________ in knocking.

Compression ratio is limited in petrol engine as more compression ratio causes __________.

Compression ratio is limited in petrol engine as more compression ratio causes __________.

The valve tappet clearance is measured by _____________ .

The valve tappet clearance is measured by _____________ .

 ___________ = I.H.P – B.H.P.

 ___________ = I.H.P – B.H.P.

Oxygen sensor is fitted at ______________.

Oxygen sensor is fitted at ______________.

During suction stroke, the inside pressure of cylinder is lesser than atmospheric pressure.T/F Compression ratio of diesel engine is greater than petrol engine.T/F The fuel feed pump in a diesel is mounted on the fuel injection pump.T/F Nox produced in the engine at low temperature.T/F Defective fuel cause excessive knocking.T/F
Auto Engine -II 4th Sem May 2019 Automobile Diploma PSBTE Paper Click Here

Section B :Auto Engine -II 4th Sem May 2019 Automobile PAPER

Write basic difference between supercharger and turbocharger.

Basic difference between supercharger and turbocharger.

Explain the effect of engine performance in high altitude and desert.

Effect of engine performance in high altitude and desert.

Explain positive crankcase ventilation.

Positive crankcase ventilation.

What are the effects of different pollutants on human body?

Effects of different pollutants on human body.

Explain series and parallel type Hybrid System.

Series and parallel type Hybrid System.

Explain Indicated power. How we calculate it in multi cylinder engine.

Indicated power. How we calculate it in multi cylinder engine.

Explain two types of supercharger.

Two types of supercharger.

Auto Engine -II 4th Sem May 2019 Automobile Diploma PSBTE Paper Click Here

Auto Engine -II 4th Sem May 2019 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 2019 Automobile PAPER

Explain the various stages of combustion in diesel engine with neat sketch.

Various stages of combustion in diesel engine.

Write methods to control knocking in diesel engine.

Methods to control knocking in diesel engine.

Explain CRDI engine with neat sketch.

CRDI engine with neat sketch.

Write short note on the following a) Fuel Filters and its types

Fuel Filters and its types 

b) HCCI Engine

HCCI Engine 

c) Plunger type fuel injection pump.

Plunger type fuel injection pump.

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