exhaust pipe

Most people use a car to commute, and you may have had to deal with your vehicle's smog check, and your own respiratory problems, possibly related to vehicle smog. Have you ever found yourself asking: "where is the closest station for smog check near me?" HCs are essentially unburned fuel. When you hear about octane it's often a reference to the anti-knock index at the pump (87 etc) but it is also a reference to the chemical composition of fuel, part of which is made from C8H18 (eight carbon atoms and 18 hydrogen atoms; hence octane). HC is measured in parts per million (ppm) by the sniffer. When fuel (HC) and air (O2 + N2) are combusted the ideal product would be energy and water vapor (H20). Because the combustion process is imperfect, CO is one of the byproducts produced. CO is measured as a percentage of the exhaust gas. It is a colorless odorless gas and if you breathe it, it will combine with the hemoglobin in your blood and make you sick or kill you in larger doses. Run…