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Auto Engine-II 4th Sem Dec 2018 Automobile Diploma Paper

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Auto Engine -II 4th Sem Dec 2018 Automobile Diploma PSBTE Paper

                                SECTION-A

Q1. Fill in the blanks. 10×1.5=15
a. Turbocharger is driven by _____________
b. Oxygen sensor is fitted at ___________
c. Diesel fuel are rated by ___________
d. ___________ is made on pump plunger to increase/decrease the supply of fuel.
e. Supercharger is driven by ___________
f. To improve the volumetric efficiency of engines ___________ are used.
g. HCCI stands for _____________
h. _____________ type nozzles are used in pre combustion chambers.
i. NOx are formed during combustion due to ______________
j. Nozzle and pump fitted on single body is called _____________

                                      SECTION-B

Q2. Attempt any six questions. 6×5=30
i. Discuss the various exhaust pollutants escape from exhaust system.
ii. Discuss briefly the various stages of combustion in diesel engine
iii. Describe the working of fuel feed pump.
iv. Discuss briefly about the turbo charger.
v. How knocking is done in diesel engines?
vi. Discuss briefly the working of injector.
vii. Discuss briefly common rail system and individual pump system
viii. Discuss the effect on engine performance due to:
a. Pressure
b. Temperature
ix. Describe the working of mechanical governor.

                                     SECTION-C

Q3. Attempt any two questions. 2×15=30
a. Explain in detail various types of superchargers with neat sketches
b. Explain the types of combustion chambers of CI engines with neat sketches
c. Explain the construction and working of jerk type fuel injection pump with neat sketch.
d. Explain the various exhaust emission control methods

Auto Engine -II 4th Sem dec 2018 Auto mobile Diploma PSBTE Paper

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Section :- Auto Engine -II 4th Sem dec 2018 Automobile Paper

Turbocharger is driven by _____________

Turbocharger is driven by _____________

Oxygen sensor is fitted at ___________

Oxygen sensor is fitted at ___________

Diesel fuel are rated by ___________

Diesel fuel are rated by ___________

___________ is made on pump plunger to increase/decrease the supply of fuel.

___________ is made on pump plunger to increase/decrease the supply of fuel.

Supercharger is driven by ___________

Supercharger is driven by ___________

To improve the volumetric efficiency of engines ___________ are used.

To improve the volumetric efficiency of engines ___________ are used.

HCCI stands for _____________

HCCI stands for _____________

_____________ type nozzles are used in pre combustion chambers.

_____________ type nozzles are used in pre combustion chambers.

NOx are formed during combustion due to ______________

NOx are formed during combustion due to ______________

Nozzle and pump fitted on single body is called _____________

Nozzle and pump fitted on single body is called _____________

What is a unit injector?

Unit injector.

What is ignition delay period?

Ignition delay period.

Auto Engine -II 4th Sem Dec 2018 Automobile Diploma PSBTE Paper Click Here

Section B :Auto Engine -II 4th Sem dec 2018 Automobile PAPER

Discuss the various exhaust pollutants escape from exhaust system.

Various exhaust pollutants escape from exhaust system.

Discuss briefly the various stages of combustion in diesel engine.

Various stages of combustion in diesel engine.

Describe the working of fuel feed pump.

Describe the working of fuel feed pump.

Discuss briefly about the turbo charger.

Turbo charger.

How knocking is done in diesel engines?



Discuss briefly the working of injector.

Working of injector.

Discuss briefly common rail system and individual pump system

Common rail system and individual pump system

Discuss the effect on engine performance due to: a. Pressure b. Temperature

Effect on engine performance due to: a. Pressure
b. Temperature

Describe the working of mechanical governor.

Working of mechanical governor.

Auto Engine -II 4th Sem Dec 2018 Automobile Diploma PSBTE Paper Click Here

Auto Engine -II 4th Sem dec 2018 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 dec 2018 Automobile PAPER

Explain the construction & working of fuel injector in diesel engines with neat sketch.

Q3. Attempt any two questions. 2×15=30
a. Explain in detail various types of superchargers with neat sketches
b. Explain the types of combustion chambers of CI engines with neat sketches
c. Explain the construction and working of jerk type fuel injection pump with neat sketch.
d. Explain the various exhaust emission control methods

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

Combustion chamber and types of combustion chambers of diesel engines.

What is the purpose of governor in diesel engines? Explain with neat sketch pneumatic type governor.

Purpose of governor in diesel engines

Pneumatic type governor.

Discuss briefly the working of exhaust gas recirculation(EGR).

Working of exhaust gas recirculation(EGR).

What do you understand by diesel knock? What are the factors cause diesel knock and how it is controlled.

Diesel knock and Factors cause diesel knock and how it is controlled.

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