Cummins says its Tier 4 QSK95 engine be safely used with renewable diesel

September 20, 2022 |

In Indiana, Cummins Inc. announced that its popular Tier 4 QSK95 engine can be safely used with renewable diesel, without any negative impact to its current EPA emission requirements or reliability.

Cummins partnered with Siemens Mobility to help customers meet their goal of running renewable diesel in QSK95-powered Charger locomotives to reduce emissions and use a fuel with lower carbon intensity. As such, Cummins undertook extensive testing and investigating of the impact of renewable diesel on their QSK95 Tier 4 fuel and aftertreatment systems through performance, emissions, and durability tests. For these tests, hydrogenated vegetable oil (HVO) was chosen.

HVO reduces well to work carbon intensity by up to 90% compared to conventional diesel fuel. HVO can be produced without fossil resources by processing lipids such as vegetable oil, tallow, or used cooking oil. Its chemical and physical properties are like those of diesel fuel, but its fossil-free composition and low carbon content provides a simple and efficient alternative to diesel. Importantly, HVO can be blended and used in any proportion with diesel which allows for ease of transition.

The tests showed that the QSK95 engine not only meets all of its Tier 4 EPA emissions targets using this renewable fuel, it also recorded additional positive environmental impacts:

·      up to 13% additional reduction in NOx (Nitrogen Oxide)

·      up to 5% additional reduction in DEF (Diesel Exhaust Fluid) consumption

·      up to 50% additional reduction in PM (Particulate Matter) emissions using renewable diesel compared to traditional diesel in rail applications.

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Category: Fuels

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