Exam 1: Emissions and Engine Performance Overview

Particulate matter (PM) is generally referred to as soot and smoke.

What are the by-products of ideal combustion in the internal combustion gasoline engine?

One of the six principal air pollutants regulated by the EPA is nitrogen dioxide.

The EPA regulates what six major pollutants?

When unburned hydrocarbons are exposed to oxides of nitrogen and sunlight, what is produced?

What is particulate matter, and what other names are used to describe it?

Volatile organic compounds are biodegradable and will not harm the environment.

Of the six major pollutants tracked by the EPA, which has had the least progress made on reducing ground level amounts?

What emission in the exhaust stream is the result of unburned fuel leaving the combustion chamber?

The I/M240 testing readings of HC, CO, and NO_X are provided in grams per mile.

Technician A says one of the six principal air pollutants regulated by the EPA is nitrogen. Technician B says carbon dioxide contributes to global warming.

The United States emits what volume of air pollution annually?

CO can have what physical effect on the human body?

Technician A says under ideal combustion, all the nitrogen entering the combustion chamber will leave the combustion chamber unchanged. Technician B says under ideal combustion, all the oxygen and all the hydrocarbons are chemically recombined to produce carbon dioxide and water. Who is correct?

What is a microscopic form of solid air pollution that can be either solid or atomized liquid matter and that is generally referred to as soot and smoke?

The EPA regulates eight principal pollutants.

During perfect combustion in an internal combustion engine, the only output would be:

How are the emission levels recorded during the I/M240 test?

Excessive buildup of carbon deposits in the combustion chamber could:

At what temperature does NO_X begin to form in the combustion chamber?