If the statement is false, explain why it is false. A fumigation system injects a gas or liquid into the intake air stream of a compression ignited engine. The Clean Air Act of 1990 concerns only diesel engines. When using a properly installed fumigation system, fewer pollutants of all kinds are reduced. The Diesel Fuel Limit Switch mixes LPG or CNG with diesel fuels.
Microcomputers manage injection of the gas or liquid additions.
A positive side benefit of using a fumigation system is that diesel exhaust odor is reduced. The Clean Air Act of 1990 addresses the pollution problem of exhaust smoke, particulate materials, as well as the requirements for reduced HC, CO, and NO x emissions for all on-road vehicles. Fumigation is a system that injects a gaseous or liquid fuel into the intake air stream of a compression ignited engine. Gaseous fumigation seems to exhibit the best overall power yields, performance and emission benefits. Venturi-draft physically introduces and mixes LPG or CNG with the air on intake.