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Cummins as an OEM’s position on Biodiesel

Cummins as an OEM’s position on Biodiesel. BIODIESEL. Biodiesel, n. -- a fuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats, designated B100

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Cummins as an OEM’s position on Biodiesel

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  1. Cummins as an OEM’s position on Biodiesel

  2. BIODIESEL • Biodiesel, n. -- a fuel comprised of mono-alkyl esters of long chain fatty acids derived from vegetable oils or animal fats, designated B100 • Biodiesel blend, n. – a blend of biodiesel fuel with petroleum-based diesel fuel designated BXX, where XX is the volume percent of biodiesel • Biodiesel is NOT raw vegetable oil

  3. Voice of the Customer • B2, B5 • Available in many states, supported by farmers, sold as premium fuel due to the lubricity benefits of biodiesel • B20 • School buses (becoming de facto fuel, PM and odor reduction), Transit fleets • Military ground support (mandatory and strategic) • State and Federal fleets (mandatory alternative fuel use) • B100 • Marine (bio-degradable in case of spills) • Parks (same as above, renewable) • Power Generation (green power, renewable)

  4. Voice of the Technology • Cummins today allows only B5 blends (biodiesel used to make the blend must meet ASTM D6751 or European EN14214) • Key Challenges for higher blends • Cost • Fuel quality • Fuel oxidation stability • Contamination, microbe growth • High cloud point

  5. Voice of the Technology (cont.) • Key Challenges for higher blends (cont.) • NOx increase • Power loss • Higher fuel consumption • Materials interaction • Fuel filter water separation efficiency • Joint Fuel Injection Equipment statement limiting use to B5 blends only

  6. Voice of the Technology (cont.) • Materials Impact • Degradation/swelling of elastomers (natural and nitrile rubber), Nylon 66 • Attacks brass, bronze, copper, lead, tin and zinc • Bosch pump overpressure valve, removal of zinc coating after 1 yr stand-by genset operation with B20 (300 hrs): • #2 Diesel B20 blend Zinc coating removed by the fuel

  7. Approaches to overcome challenges with B100 • Fuel • In general: Fuel must meet ASTM D6751 and kept fresh, clean and dry • Quality: Preferably, fuel supplier needs to be BQ9000 certified • Stability: Stability test needs to be defined. Periodic inspection for acid number and other characteristics, strict storage guidelines for fuel and equipment that is idle. • Contamination, microbe growth: Fuel delivery and storage control, additives • High Cloud Point: Cold flow improver additives.

  8. TOGETHER AS A TEAM, WE CAN INCREASE THE USE OF BIODIESEL !

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