Cummins Inc. announced today that the next-generation QSB4.5 engine will meet Tier 4 Final near- zero emissions standards with top-rated power increased to 173 hp (129 kW) and a higher peak torque of 520 lb-ft (705 Nm). The 4-cylinder, 4.5-liter engine is performance enhanced with a Cummins VGT(TM) Variable Geometry Turbocharger, enabling the higher ratings of the QSB4.5 to reach performance levels previously associated with a larger 6-cylinder engine.
For the QSB4.5 lower ratings down to 121 hp (90 kW), the VGT technology improves transient response on a fuel efficient basis. For equipment operation, this means a stronger, faster response to increasing load demands compared to Tier 4 Interim.
The QSB4.5 will be a key focus of attention in the Cummins booth at World of Concrete, which is taking place February 5-8, 2013 in Las Vegas. The QSB4.5 will be shown ready for the EPA Tier 4 Final emission regulations taking effect Jan.… Continue readingRead More »