Engine company Cummins has released three new engines dubbed the X Series with ratings from 260 to 445 kilowatts.
The X Series engine platform is a development on the current heavy-duty engines, “taking on new names to reflect the evolution and introduction of the product platforms to meet Phase 1 greenhouse gas (GHG) and fuel-efficiency standards, to be fully implemented in 2017”, according to the company.
Cummins says a series of finely tuned improvements on existing technologies means the X15 offers performance and fuel efficiency, with an optimized compression ratio, air handling system and cam profile.
The X12 offers medium-bore power “with by far the highest power-to-weight ratio of any heavy-duty engine”, Cummins says.
All three are integrated with a Single Module after treatment emissions system.
Up to 60 per cent smaller and 40pc lighter than modular after treatment systems, Cummins’ Single Module system offers Diesel Particulate Filter ash cleaning services to as much as 800,000 miles on the X15.
The X15 Performance Series is configured for heavy-haul and vocational trucks, with a 260 kilowatt to 445kW ratings range, while the X15 Efficiency Series is tailored for line-haul and regional-haul applications, with a 300kW to 367kW range.
The X12 medium bore engine has a 260kW to 350kW range for regional-haul, intra-city delivery and vocational trucks.
Cummins engine business president, Srikanth Padmanabhan, said the “engines deliver unparalleled performance while achieving the lowest cost of operation.
“Equally important – they are great to drive, with faster response and more braking power than ever before.”