Exhaust gas gas is undesirable, noxious, or toxic substances, such as carbon monoxide (CO) from incomplete combustion, hydrocarbons (properly indicated as CH, but typically shown simply as "HC" on emissions-test slips) from unburnt fuel, nitrogen oxides (NO) from excessive combustion temperatures, and particulate matter (mostly soot). Exhaust gas temperature (EGT) is important to the functioning of the catalytic converter of an internal combustion engine. It may be measured by an exhaust gas temperature gauge. EGT is also a measure of engine health in gas-turbine engines (see below). During the first two minutes after starting the engine of a car that has not
South African criminal law a ground of justification in respect of It is sometimes a ground of justification in respect of assault. In "R v Peverett", the accused and one "S," at the latter's suggestion, decided to commit suicide by introducing into a closed motor car poisonous fumes from the exhaust pipe of the car. The accused made the necessary arrangements. He and "S" then sat in the car; the accused started the engine. They both lost consciousness but were later removed from the car and eventually recovered. The accused was convicted of attempted murder; his appeal was dismissed. The court held that the