Tier4i engines

Carrier Transicold's trailer products offer better fuel efficiency and lower sound output than previous models. The units also feature engines that significantly surpass Environmental Protection Agency (EPA) interim Tier 4 standards (Tier 4i) and California Air Resources Board (CARB) emissions requirements. With a threshold of 0.3 grams per kilowatt-hour (g/kwh), the Tier 4i standard lowers emissions by 50 percent for trailer refrigeration units with 25- to 50-horsepower engines compared with the preceding EPA engine standard. Carrier units reduce particulate emissions 30 percent beyond the EPA standard, driving particulate emissions to only 0.214 g/kwh. In addition, Carrier's Tier 4i engines emit 19 percent less combined NOx (nitrogen oxides) and hydrocarbons than the EPA threshold.

As a result of various improvements, the engines are 1 to 2 percent more fuel efficient and about 1 dB quieter than Carrier's previous engines. The Tier4i engines are common to the models 2100, 2100A, and 2500A from Carrier's X2 Series, as well as the Ultima, Ultra, and Genesis models.

Company: Carrier Transicold

Company URL: www.trucktrailer.carrier.com