Isuzu Motors, based in Yokohama, Kanagawa, Japan, expands its FORWARD medium-duty truck lineup with new models featuring a gross vehicle weight (GVW) exceeding 15 tons. This latest addition to the FORWARD series, recognized internationally as the F-Series, introduces the 6.7-liter inline six-cylinder diesel engine, the DB6A, developed in partnership with Cummins, headquartered in Indiana, USA.
The 2019 Isuzu Cummins Powertrain Partnership aimed to innovate next-generation powertrains. The DB6A engine, the first product of this collaboration, is set to transform the medium-duty diesel powertrain segment.
The DB6A engine, delivering 220 kW (300 ps) and a peak torque of 1,081 N/m (110 kgf/m), stands out with its reduced weight compared to traditional six-cylinder engines, enhancing vehicle efficiency and performance.
The chassis frame, redesigned to align with international models, optimizes the wheelbase for better weight distribution across the front and rear axles, ensuring higher loading capacity. Exclusive bumper headlamps contribute to a dynamic cab design, while Isuzu’s proprietary PREISM-connected solution service supports efficient operation for models equipped with the DB6A engine.
A line-off ceremony for the DB6A engine at Isuzu’s Tochigi Plant marked this milestone. Jennifer Rumsey, Chair and CEO of Cummins, emphasized the significance: “Our strong partnership is crucial to our ability to grow together and meet the needs of our customers by leveraging the strengths and scale of both companies. This is an important milestone for both Cummins and Isuzu as we enter the Japanese on-highway market for the first time in our 105-year history.”
Shinsuke Minami, President of Isuzu Motors, highlighted the broader impact: “I believe that various powertrain options will be needed to achieve a carbon-neutral society, given the many different circumstances around the world. For diesel engines as well, it is necessary to continuously introduce new products with low CO2 emissions that comply with higher emission regulations, and we believe that the DB6A engine will secure our place in the market as the most advanced diesel engine in terms of emission control technology.”
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