Cummins develops and introduces cleaner engines

Cummins is proceeding on track with its plan to meet the Stage V European emissions requirements. The firm has so far completed 100 Stage V customer installations across a range of off-highway machine types including compressors, back-hoe loaders, dump trucks, drills, pavers, cranes, excavators and wheeled loaders. The firm is now offering Stage V engines with power outputs from 74-503kW and claims the units offer higher performance, more reliability, better productivity, improved fuel efficiency and
February 28, 2018 Read time: 2 mins
Cummins has clean engine solutions to meet Stage V requirements

196 Cummins is proceeding on track with its plan to meet the Stage V European emissions requirements. The firm has so far completed 100 Stage V customer installations across a range of off-highway machine types including compressors, back-hoe loaders, dump trucks, drills, pavers, cranes, excavators and wheeled loaders.

The firm is now offering Stage V engines with power outputs from 74-503kW and claims the units offer higher performance, more reliability, better productivity, improved fuel efficiency and extended service intervals. The engines are said to be more compact with less weight, less to cool, less installation complexity and lower installation cost for manufacturers.

The novel Single Module aftertreatment and its higher NOx conversion capability has supported the removal of EGR from engines in the 3.8-9litre range. Cummins B6.7 and L9 Stage V engines both offer higher power output and torque. The Stage V B6.7 can now deliver up to 243kW, with a 30% increase in peak torque to 1375Nm. The L9 maximum power has been increased by23kW to 321kW for Stage V, as well as a 13% increase in peak torque to 1846Nm.

The F3.8 and B4.5 engines will also be ready prior to the required date of 2020, with increases in power and torque for Stage V. The 3.8litre moves from 97kW at Stage IV to 129kW at Stage V, while the 4.5litre engine jumps from 129kW to 149kW. Peak torque of the F3.8 increases by more than 20%, to 620 Nm, and an 11% increase moves the B4.5 up to 780Nm.

A key benefit of the new Stage V engines from Cummins is that they are more tolerant of high sulphur fuels than the earlier low emission diesels. A spokesperson for the firm explained that this is because the new Stage V emissions system does not use EGR technology. Moisture used to develop in the EGR and this turned acidic due to the presence of sulphur, leading to internal corrosion.

For more information on companies in this article

Related Content

  • Powertrain innovations delivering cleaner solutions
    May 10, 2018
    The push towards cleaner-running driveline developments from engine firms is continuing - Mike Woof writes. Sophisticated driveline developments are being seen right across the engine and drivetrain segment, with new low emission technologies being unveiled. High performance and extended service intervals are claimed, while tailpipe emissions have been reduced to meet the coming EU Stage V and latest US Tier 4 Final requirements. But different firms are taking different routes to delivering cleaner tailp
    Read More
  • Cummins achieves stage V certification with B6.7 and L9 engines
    April 24, 2018
    Cummins has announced that its latest B6.7 and L9 engines are fully EU Stage V emissions certified and in full production at its Darlington engine plant in the UK. “The latest emissions compliant specification has resulted in higher power and torque in a smaller, lighter overall package that has become cheaper to run,” said Eric Neal, executive director of Cummins off-highway business. And, he added, “Cummins’ ability to tailor engine power and torque curves and make full use of our in-house equipment such
    Read More
  • Cummins PLUS engines for China
    April 7, 2023
    Cummins unveiled a generation of clean off-road engines that meet China’s National Stage IV emissions (CS IV) which came into effect on December 1, 2022.
    Read More
  • Cummins drops EGR to meet EU Stage V emissions
    April 12, 2016
    Cummins has revealed a new generation of ultra-low emission diesel engines that have been engineered to meet forthcoming EU Stage V emissions regulations. The engines include F3.8, B4.5, B6.7 and L9 variants with capacities from 3.8-9litre and spanning 75-321kW. Importantly, all have ditched EGR, creating a mechanically simpler package that delivers more power, more torque and lower fluid consumption, said Cummins - while maintaining the same capacity as the engines they replace. “Removing EGR allowed us
    Read More

Highlighted Content