Emissions

Question 0

Hydrocarbons

Answer 0

HC

Question 1

Carbon Monoxide

Answer 1

CO

Question 2

Water

Answer 2

H2O

Question 3

Carbon Dioxide

Answer 3

CO2

Question 4

Oxides of Nitrogen

Answer 4

NOx

Question 5

Sulphur Oxides

Answer 5

SOx

Question 6

The four most harmful emissions are:

Answer 6

carbon monoxide (CO)
oxides of nitrogen (NOx)
particulate matter (PM)
sulphur Oxides (SOx)

Question 7

Def will freeze at what temperature?

Answer 7

-11 C (12.2 F)

Question 8

DEF consists of ________% water and _______% urea?

Answer 8

67.5 % water and 32.5 % urea

Question 9

DEF tanks is made of ________ or _______ materials as some metals may react with the DEF.

Answer 9

plastic or nylon

Question 10

DEF filter service intervals is?

Answer 10

2 years or 320,000 KM

Question 11

In the SCR catalyst system the exhaust eats the catalyst. the catalyst operates between _______ C and _______ C.

Answer 11

200 C to 550 C (392 F to 1,022 F)

Question 12

What does HEST mean and what does it do?

Answer 12

High Exhaust System Temperature

In forms the operator the exhaust system is hot

Question 13

DEF should be cleaned at approximately _______?

Answer 13

200,000 KM or 2,500 hours

Question 14

The catalytic conversion process with DOC allows exhaust contaminants to oxidize at a temperature of _____ to ______ . Without a catalyst , oxidation will not occur below _______ to ________.

Answer 14

600 F to 700 F (315.55 C to 371.11 C)

1100 F to 1200 F (593.33 C to 648.88 C)

Question 15

There are two basic types of EGR valves.

Answer 15

butterfly

poppet

Question 16

To monitor the regeneration cycle of an exhaust system the ECM uses _______ temperature sensors and ______ pressure sensors.

Answer 16

3 temperature sensors

2 pressure sensors

Question 17

Hydrocarbon dosing systems typically, this method is used only with _________.

Answer 17

common rail fuel injectors