New DPF Highlights Cat ’07 Engine Line

Posted on March 23, 2006

Caterpillar unveiled its complete engine line for 2007, along with some new aftertreatment technology designed to meet the new emissions standards.

The new Caterpillar on-highway engine line is comprised of four models—the C7, C9, C13 and C15 - all equipped with the company’s ACERT Technology. The engines will be available to order beginning in fourth quarter 2006.

The mid-range C7 provides truck and bus ratings of 190 to 300 hp at 2200 rpm and recreational vehicle and fire truck ratings of 300 to 350 hp at 2400 rpm. The 7.2 L engine provides 520 to 860 lb. ft. of torque at 1440 rpm.

The C9 now provides increased displacement for expanded horsepower ratings, more torque rating options and a Cat integral brake. Ratings for the 9.3 L engine include 285 to 350 hp at 2100 rpm for truck and bus applications and 335 to 425 hp at 2100 rpm for recreational vehicles and fire trucks. The C9 provides 890 to 1350 lb.ft. of torque at 1400 rpm and Cat will also offer a 1250 lb. ft. C9 rating.

The new C13 is available in on-highway vocational and heavy-duty line haul configurations. The 12.5 L engine delivers 1150 to 1750 lb.ft. of torque at 1200 rpm. Vocational truck ratings are 305 to 370 hp, line haul truck ratings are 380 to 470 hp and recreational vehicle and fire truck ratings are 485 to 525 hp, all at 2100 rpm. The heavy-duty, 15.2 L C15 offers truck and bus ratings from 435 to 625 hp at 2100 rpm, with recreational vehicle and fire truck ratings of 600 to 625 hp at 2100 rpm. Torque ratings range from 1550 to 1850 lb.ft., with a “King of the Hill” torque rating of 1850 to 2150 lb..ft., both at 1200 rpm.

The engines will incorporate several enhancements, including the addition of a new, Caterpillar-manufactured diesel particulate filter DPF. The Cat DPF essentially combines the DPF substrate with a catalytic coating, thereby eliminating the separate diesel oxidation catalyst used on most other aftertreatment system designs. For active regeration, Caterpillar has developed the Cat Regeneration System (CRS), a fuel-fired device mounted on the engine, to raise the exhaust temperatures to allow regeneration.