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Quiz #1 Automotive

The document contains a quiz with multiple choice and calculation questions about internal combustion engines. It includes questions about engine components, classifications of vehicles, safety features, and calculations related to piston speed, efficiency, compression ratio, and ideal thermal efficiency. The quiz is divided into four parts testing knowledge of engine types, vehicle categories, vehicle safety, and performance calculations for diesel and gasoline engines.

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453 views3 pages

Quiz #1 Automotive

The document contains a quiz with multiple choice and calculation questions about internal combustion engines. It includes questions about engine components, classifications of vehicles, safety features, and calculations related to piston speed, efficiency, compression ratio, and ideal thermal efficiency. The quiz is divided into four parts testing knowledge of engine types, vehicle categories, vehicle safety, and performance calculations for diesel and gasoline engines.

Uploaded by

Secret Secret
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Name: Revereal, Allen Joy DG.

5ME-C Quiz #1

Please email your Final Answers one (1) hour after receipt of eQuiz to:
vitaliano.mamawal@toyota.com.ph

Part I Questions (25 points)

1. What are the basic types of Internal Combustion Engines (ICE)? (2 items)

Answers: Wankel Engine , Jet Engine

2. What is the engine component that converts the reciprocating motion into rotary
motion? (1 item)

Answer: Crankshaft

3. Name the 4 piston strokes in their correct order/sequence. (4 items)

Answer: Exhaust, Compression , Intake, Power / Combustion

4. Identify the basic part of the engine on which everything else is attached to or
assembled into. (1 Item)

Answer: Engine Block

5. Give 3 examples each of vehicle classifications according a) body styles, b) curb weight,
c) space. (9 items)

Answers:

a. SUV, Coupe, Sedan

b. Passenger Cars, SUV , Vans

c. Two-Seaters, Small Station Wagons, Compact

6. Give 2 examples of vehicle Safety features. (2 Items)

Answers:

a. Seatbelts
b. Airbags

UST Automotive Engineering 1


7. Name 2 kinds of windshield glass. (2 Items)

Answers: Laminated Glass, Tempered Glass

8. Identify typical paint layers in proper order from base metal. (4 Items)

Answers: Primer, Paint, Clear Coat, Wax Layer

Part 2 Questions (25 points)

Michael’s car has a 3 liter SI V6 engine on a 4-stroke cycle at 3,600 rpm. Compression Ratio is
9.5. The length of the connecting rod is 16.6 cm and the engine is “square” (B=S). At this speed,
combustion ends at 20 degrees after TDC.

Calculate:

1. Cylinder Bore and Stroke Length, cm

With S = B

( ) ( )

Cylinder Bore and Stroke length = 8.6cm

2. Average piston speed, m/sec

Ave. Piston Speed = 2 N

=2 (0.0860 )( )

Ave. Piston Speed = 10.32

UST Automotive Engineering 2


Part 3 Question (25 points)

Determine the air-standard efficiency of a Diesel engine when the suction pressure is 99.97 kPa
and the fuel is injected for 6% of the stroke; the clearance volume is 8% of the stroke. Assume
k=1.4

Choices:

a. 60.07%c. 66.07%

b. 62.07%d. 64.07%

Answer: c

Part 4 Question (25 points)

The compression ratio of a Diesel engine is 13:1 and the ratio of expansion is 6.5;1. At the start
of compression, the temperature is 32 degrees Centigrade. Assuming adiabatic compression
and expansion, calculate the ideal thermal efficiency, with specific heats at constant pressure
and volume as 1.005kJ/kgK and 0.718kJ/kgK respectively.

Choices: a. 52% b. 54% c. 56% d. 58%

Answer: b

UST Automotive Engineering 3

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