Cummins electronic QSB engines

QSB3.3 inherits the mechanical characteristics of the B3.3 engine and becomes the first small construction machinery diesel engine that perfectly combines full electronic control with high pressure common rail fuel system ( HPCR ) in the same size engine.

The maximum power of QSB3.3 can reach 110 hp ( 82 kW ), and the performance reaches the same level as that of 4.0 and 4.5 liter engines, while the volume and weight are reduced by 30 %. At full power output, the noise is about 3 dB lower than that of mechanical engines, and the low speed torque is larger, which meets the third stage emission standard of European and American off-road mobile equipment ( Tier 3 ).

Cummins QSB4.5 full electronically controlled engine ( 4 cylinders, 110-170 horsepower ), Cummins QSB6.7 full electronically controlled engine ( 6 cylinders, 130-260 horsepower ).

Compared with the QSB3.9 and QSB5.9 engines that meet the second-stage emissions, the QSB4.5 and QSB6.7 engines that meet the third-stage emissions are a new generation of products designed by Cummins. The fully electronically controlled high-pressure common rail fuel system ensures that the fuel burns more gently and thoroughly in the cylinder, and achieves the third-stage emission standard without using exhaust gas recirculation. The rear gear chamber and the flywheel housing are designed as a whole, and the structure is