The QSB Series incorporates Cummins proven technology enablers to meet EPA Tier 4 and EU Stage IIIA low emissions standards.
The QSB Series achieves these very low emission standards by using our proven cooled Exhaust Gas Recirculation (EGR) and after-treatment systems. Both systems have been specifically developed for industrial applications delivering premium performance and durability you can depend on.
Additional performance-enhancing features include a high pressure common rail fuel system for greater fuel efficiency, lower noise and reduced emissions. Cummins Direct Flow air filtration system providing a 35 percent smaller installation profile than radial air filters, plus improved filtration efficiency. The engine also incorporates a crankcase ventilation system with a highly-efficient coalescing filter for cleaner engine operating conditions. Cummins combines full-authority Quantum System electronic controls, managing all components for a completely integrated system with the impressive reliability and durability and long maintenance intervals you expect from the industry’s Tier 4 technology leader.