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Inspection and Emissions Final test Questions and Answers 100% Solved
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Inspection and Emissions Final test
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Inspection and Emissions Final teststation hotline - answer general/specific program questions
customer hotline - answer for motorists to get answers
sticker department - answer help with sticker and insert orders
what is covered in emissions inspector certification (EIC)? - answer visual antitampering
check
two-speed idle (TSI) test
gas-cap test
on- board diagnostics (OBD) I/M checks
a Pa emissions inspector must meet what requirements? - answer at least 18
have a valid driver’s license
enroll/qualify with PennDOT
Successfully complete the EIC course
where does air pollution come from? - answer hydrocarbons (HCs)
carbon monoxide (CO)
nitrogen oxides (NOx)
sulfur dioxide (S02)
particulate matter that is released into the atmosphere
ozone (smog)
examples of hydrocarbons - answer gasoline
diesel
natural gas
what are 2 ways that excessive HCs are emitted by vehicles? - answer incomplete
combustion
fuel evaporation
what can tailpipe HC emissions be caused by? - answer ignition system misfiring
improper ignition timing
rich fuel mixtures
engine mechanical deficiencies
uneven fuel injector delivery
anything that would harm or influence the combustion process
what is CO? - answer a colorless, odorless, and poisonous gas
,how is CO produced? - answer by the incomplete burning of a fuel
abbreviation for ozone smog - answerO3
When are NOx formed in the engine? - answer during high temperature combustions
how is smog created? - answer NOx and HC combine and then exposed to sunlight
what is NOx the primary cause of? - answer acid rain
short term effects of NOx - answer irritation of the eyes, nose, and throat
long term effect - answer respiratory problems (ex. asthma)
excessive NOx emissions can be caused by what? - answer lean air fuel mixture
defective exhaust gas recirculation valve (EGR)
higher than normal engine temperatures
vacuum leaks
advanced ignition timing
too much or too little of oxygen can cause what? - answer improper combustion
the improper combustion of oxygen creates what? - answer pollution
What can cause not enough O2 emissions? - answer rich air fuel mixture
dirty air filter
faulty injectors
high fuel pressures
a defective system sensor
restricted pcv system
EVAP system purging at low or idle speeds
too much O2 can be caused by what? - answer lean air fuel mixture
vacuum leak
engine misfire
exhaust leak
how is ozone smog created? - answer a chemical reaction between NOx and HC in
sunlight
ozone doesn’t go straight into the air, instead where is it created? - answer at ground
level
what is particulate matter? - answer dust
soot
other air introduced solid materials
, how is particulates released into the air? - answer combustion
What effects can these particles cause? - answer damage to the lungs
other health problems
what mixture most efficiently uses the fuel and the lowest emissions? - answer14.7
parts of air to every 1 parts of fuel
What is the name of the most efficiently used ratio for gas? - answer stoichiometric ratio
what is NOx the result of? - answer the combination of Nitrogen (N) and oxygen (02)
when does NOx majorly increase? - answer when combustion temperatures are higher
than 2,500 degrees F
What main gas is drawn into the engine and what percent? - answer80% N
What kind of gas is N? - answer inert gas
what does inert mean? - answer under normal conditions the compound doesn't want to
mix with other compounds
what happens when the temperature in the combustion chamber is too high? – answer
N looses its inert qualities and can combine with O2
When 02 and N combine what does it make? - answer NOx
At what temperature does the combustion chamber exceed normal? - answer2,500
degrees F
What is N? - answer nitrogen
what gases combine under unnormal circumstances? – answer N and 02
ppm? - answer parts per million
when the engine runs at Stoichiometric level, NOx production ranges from what? -
answer1,700-2,500 parts per million (ppm)
what is an EGR valve for? - answer reduce nitrogen
in 1984 What did Pa implement for the first time? - answeremissions I/M program
What counties were the first ones to receive a decentralized model for the emissions
program? - answer5-philadelphia area
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