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EGR System Quiz

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12th Grade

Used 6+ times

EGR System Quiz
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15 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the EGR system feed into the intake manifold?

Fresh air

Exhaust gases

Fuel

Water vapor

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of feeding exhaust gases back into the intake manifold?

Increases combustion temperature

Increases NOx levels

Lowers combustion temperature

Increases air-fuel ratio

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the role of the spring-loaded plunger in early EGR systems?

To increase fuel flow

To block the flow of gases through the orifice

To increase air intake

To reduce engine temperature

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the design change in EGR systems due to the limitations of early systems?

Use of only exhaust back pressure

Use of both exhaust back pressure and manifold vacuum

Use of only manifold vacuum

Use of electronically controlled valves

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main component that blocks the flow of gases in early EGR systems?

Throttle valve

Plunger

Orifice

Manifold vacuum

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What gases are collectively known as NOx?

NO and NO2

NO2 and CO2

NO and CO

NO2 and O2

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the function of the diaphragm in a positive exhaust back pressure EGR valve?

To open the valve when exhaust pressure is high enough

To close the valve when exhaust pressure is low

To regulate the intake air

To control the fuel injection

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