Improved Air Management
For 2007, Cat® C13 and C15 engines still employ series turbochargers to force more cool, clean air into the combustion chamber. Cat C7 and C9 engines feature variable nozzle turbocharging. The air management system of ACERT™ Technology is also designed to control the air volume required at various engine loads and speeds for more complete combustion and optimal fuel economy. This is accomplished with variable valve actuation (VVA), a process that allows precise control in relation to camshaft operation. The Cat air management system and Cat electronics combine to make VVA possible. Play Video

Precision Combustion Technology
Proprietary Cat fuel systems use precise multiple injections to produce a more complete burn, reducing emissions at the point of combustion. Then Cat Clean Gas Induction lowers emissions even more by drawing off non-combustible gas after it has passed through a diesel particulate filter, cooling it and blending in more cool, clean air for re-combustion. Play Video

Advanced Engine Electronics
Engine operating conditions are continuously monitored by an electronic control module. It's a computer that synchronizes components to produce optimal power and fuel economy with lower emissions. Advanced Cat engine electronics is the key to making the separate systems of 2007 ACERT Technology work together as an efficient unit. Play Video

Simple, Effective Aftertreatment
The new Cat Diesel Particulate Filter, which replaces the Diesel Oxidation Catalyst, is designed for self-regeneration under all conditions via the Cat Regeneration System. It works automatically, using only the precise amount of fuel necessary to oxidize soot. No driver action is required. Play Video