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Caterpillar has received certification from the US Environmental Protection Agency (EPA) for the company’s first engine equipped with ACERT Technology for 2007.

The first 2007 EPA-certified Caterpillar engine with ACERT Technology is the C7, a popular choice with customers who operate medium-duty vocational and delivery trucks. It will be in full production by January 1, 2007. The C7 is also widely used in a variety of other medium duty applications, including school buses, emergency vehicles and recreational vehicles.

ACERT Technology relies on four basic systems to lower emissions:

• Air management;
• Precision combustion;
• Advanced electronics; and
• After-treatment

These four systems work to decrease particulate matter, oxides of nitrogen and hydrocarbon emissions while preserving the engine’s reliability and durability, which keep owning and operating costs low.

The Caterpillar C7 engine features an enhanced version of ACERT Technology that allows it to comply with the 2007 EPA regulations without sacrificing reliability, durability or fuel economy.

The 2007 ACERT C7s feature power ratings from 190 hp to 300 hp (142 kW to 224 kW) @ 2,200 rpm for truck and bus applications, and 300 hp to 350 hp (224 kW to 261 kW) @ 2,400 rpm for RV and fire truck applications. Torque ranges from 520 lb-ft to 860 lb-ft (705 Nm to 1,166 Nm) @ 1440 rpm.

The 2007 C7 is a 7.2-liter, in-line 6 engine that features a variable nozzle turbo and a common rail fuel system that helps optimize performance and increase fuel economy by up to 4%. The 2007 aftertreatment system uses cooled exhaust gas recirculation (CEGR) and Clean Gas Induction (CGI). (See diagram at right.) The diesel particulate filter (DPF) is self-regenerating.

Resources:

• Caterpillar C7 with ACERT Technology