HVAC compliance and regulation: Air-conditioning innovations help the bus industry to comply

摘要

Heating, ventilation and air conditioning (HVAC) system manufacturers have been instrumental in helping transit bus and motorcoach manufacturers meet changing federal Environmental Protection Agency (EPA) and state requirements in recent years - without sacrificing the passenger comfort and benefits that operators rely upon. For example, new bus and motorcoach engines were required to meet new emission standards that took effect in 2010. To meet the standards, engine manufacturers added diesel particulate filters (DPFs), which took up valuable space on the rear of the bus above the engine. In the U.S. transit industry, the rear of the bus was far and away the most common location for the HVAC unit.