PROVEN TIER 4 TECHNOLOGY

MORE POWERFUL, RELIABLE ENGINE ELECTRONICS
The electronics used in Cat® Tier 4 Final engines are more powerful and robust than ever.
Increased features and connection commonality improve the customer experience and increase quality and reliability.

INNOVATIVE AIR MANAGEMENT
Cat Tier 4 Final engines feature innovative air-management systems that optimize airflow and enhance power, efficiency and reliability. We apply a range of simple, reliable turbocharging solutions, based on engine size and application. This allows us to match turbo performance to rated output for high productivity, excellent fuel efficiency, long life and low operating costs.

NEXT GENERATION FUEL SYSTEM OPTIONS
As a key component of Cat Tier 4 Technology, injection timing precisely controls the fuel injection process through a series of carefully timed microbursts. This injection timing provides more control of combustion for the cleanest, most efficient fuel burn. To maximize customer value, Caterpillar engineers specified fuel systems based on the power and performance demands for each engine.

High-Pressure Common Rail Fuel Systems with full electronic injection improve precision and control that boost performance and reduce soot for the C7.1 ACERT™ and C9.3 ACERT.

Advanced MEUI™-C injector platforms handle increased injection pressures and more precise fuel rates. These durable injectors enhance responsiveness while controlling soot in the C13 ACERT, C15 ACERT, C18 ACERT, C27 ACERT and C32 ACERT.

CAT NOx REDUCTION SYSTEM
The Cat NOx Reduction System (NRS) captures and cools a small quantity of exhaust gas, then routes it back into the combustion chamber where it drives down combustion temperatures and reduces NOx emissions. The result of more than a decade of Caterpillar engineering research into this technology, the NRS is designed to be the most reliable system of its type.