July 9, 2023. Cummins Darlington Engine Plant has celebrated the production of its first L9N engine, the first natural gas engine produced at the UK plant in its 58-year history.
Produced alongside 72,000 diesel engines a year in Darlington, the 8.9 litre L9N (280 – 320hp) combines an ultra-low emissions profile for CO2, NOx and particulate matter, with diesel-like performance and reliability. The L9N can operate on compressed or liquified natural gas as well as renewable natural gas, which significantly reduces well-to-wheels carbon emissions.
Ashley Watton – Director, Bus Business Europe at Cummins, said: “Cummins’ natural gas engines are a practical, readily available technology for customers seeking quiet, fuel efficient, ultra-low emissions power for urban transportation. Producing these engines locally for our European truck and bus OEM customers improves logistics and responsiveness as well as the all-round sustainability of this business.”
Designed to meet Euro VI Phase E emissions regulations, the L9N is in high demand from the European bus market, particularly in cities with low emission zones. It is currently helping to transport passengers on city bus routes throughout Azerbaijan, Estonia, Poland, Spain, and Turkey.
Cummins transferred production of the L9N from its Rocky Mount Engine Plant in North Carolina, USA, to provide its Europe-based L9N customers with in-region supply. This has reduced supply chain complexity and supports more sustainable operations by shortening shipping distances and times. The move was completed in just six months and saw a significant investment in the Darlington plant.




