ACERT Tier 4 Interim/Stage IIIB engine

  • 15-Jun-2009 02:08 EDT

Caterpillar’s C7.1 ACERT engine features a 7.01-L platform with a power rating of 175-300 hp (130-225 kW) and delivers a peak torque of 944 lb·ft (1280 N·m). The engine includes a Cat Clean Emissions Module aftertreatment system that will meet Tier 4 Interim/Stage IIIB emissions standards. It allows maximum flexibility in mounting the aftertreatment module in a variety of locations. Equipped with a next-generation A5 electronic control unit, high-pressure common rail fuel system, and a two-stage Smart Wastegate turbocharger, the engine delivers good low-speed response and torque as well as excellent power density at higher speeds. It features poly-vee belts for longer service intervals and hydraulic tappet adjustment that minimizes the need for routine service. Fuel consumption improvements of up to 5% are realized compared to existing Tier 3/Stage IIIA engines.
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