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Research for the Future Valtra Biogas (Dual Fuel) Tractor

Research for the Future Valtra Biogas (Dual Fuel) Tractor. October 26th, 2010 Hannu Niskanen, Valtra Inc. Valtra Biogas (Dual Fuel) Tractor Research Project. Valtra N101, 90 PTO hp Front loader application Biogas cylinders 170 l (equals about 30 l diesel fuel) on the right hand side

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Research for the Future Valtra Biogas (Dual Fuel) Tractor

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  1. Research for the FutureValtra Biogas (Dual Fuel) Tractor October 26th, 2010 Hannu Niskanen, Valtra Inc.

  2. Valtra Biogas (Dual Fuel) TractorResearch Project • Valtra N101, 90 PTO hp • Front loader application • Biogas cylinders 170 l (equals about 30 l diesel fuel) on the right hand side • All installations according to European R110/R115 gas vehicle standards • No changes to the mechanical structure of AGCO Sisu Power diesel engine except added gas equipment

  3. Dual Fuel Principle • Biogas (or methane CH4) doesn’t ignite in high compression like diesel fuel • Therefore a small amount of diesel fuel (or biodiesel) must be injected to the cylinders to ignite the air/gas mixture • Majority of power by gas (biogas or natural gas), ratio about 20 % diesel or biodiesel, 80 % gas • High efficiency compared with Otto process (spark plug ignition), possibity to use diesel fuel only when gas cylinders are empty

  4. General arrangement

  5. Refilling biogas • NGV-1 connector like for cars • Very convenient location

  6. Composite Cylinders • Full composite cylinders • Weight 20 kg, volume 42 l • Four pieces, 168 l equals 29 l diesel fuel • Max pressure 200 bar, equals 7 kg gas per cylinder • R110 approved

  7. Location of cylinders • Low centre of gravity • Do not decrease visbility from the cab • Mechanical protection according to ECE R110 vehicle regulations • Space for the front loader

  8. Preliminary results

  9. Testing goes on… • Concept tractor equipped with Ecocat catalytic converter • Practical testing goes on in Skåne • Parallely similar Dual Fuel concept is applied to a generator set with sister company AGCO SISU POWER Genpowex

  10. Dual fuel generator set 120 kVA

  11. Partners in developing of the first research model • RAP Clean Air Products, Holland (approved gas components and installation of the high pressure circuit) • Afcon Oy, general lay-out of the tractor including design of cylinder mountings plus low pressure installations • ALT-Control Oy (Turbotec), ECU for the gas injectors • AGCO Sisu Power, ECU for diesel injection, gen set • Metener Oy, supply of biogas, practical testing in farm use • Ecocat Oy, emission measurements in Vihtavuori, supply of catalyst

  12. Open questions • There is no EU legislation for Dual Fuel vehicles/off-road engines. Emission requirements? • Availability and distribution of biogas • Market for biogas tractors, size, growth and location? • Valtra is expecting results from a Swedish study Biogasdrivna traktorer i lantbruket – en förstudie by Biogas Syd

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