tractor innovations and sustainability - club of · pdf file · 2010-02-10renius...
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Renius 2009CLUBOFBOLOGNA 2009
Tractor innovations and sustainability
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CLUBOFBOLOGNA 2009 Renius 2009
Sustainability• Resources• Environment• Human factors
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CLUBOFBOLOGNA 2009 Renius 2009
Sustainability: Resources
Saving material• Load-stress analysis• Representative load spectra• Random load fatigue analysis• Accelerated design verification
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CLUBOFBOLOGNA 2009Renius 1976
ASAE Lecture 29/2005
Transmission input load spectrum
Vahlensieck1999
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CLUBOFBOLOGNA 2009 Renius 2009
• Higher power density for 4-cylinder engines• SCR Selective Catalytic Reduction• Electro-hydraulic valve timing • Variable displacement engine oil pumps• Turbo-compound systems• Electric powered engine aggregates• High voltage energy supply for implements • Electric power steering (small tractors)• Oil level management for transmissions• Synthetic oils for engine & transmissions• Electronic control of load sensing hydraulics• Real time control of tire inflation pressures• Real time control of traction efficiency• Real time process „implement controls tractor“
Innovations for energy savings
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CLUBOFBOLOGNA 2009 Renius 2009
Sustainability: Resources
Saving energy - components• Engine• Transmission• Hydraulics• Ground drive• Tractor-implement
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CLUBOFBOLOGNA 2009 Renius 2009
Diesel engine fuel economy
best point within efficiency map:
Actually ≥ 200 g/kWh (η = 42%)Vision: 190 g/kWh (η = 44%)
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ReniusTUM 2009
VTG Turbo charger
Courtesy John Deere
Adjustablevanes
CLUBOFBOLOGNA 2009
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ReniusTUM 2009
Deutz AGYearbook VDI-MEG 2004
CLUBOFBOLOGNA 2009
Benefits of an intelligent engine turbo charger control
Diesel engine DEUTZ BF 6 M 1013 FC, 200 kW @ 2300 rpm, NOx level about 6 g/kWh
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CLUBOFBOLOGNA 2009 Renius
Selective Catalytic Reduction of NOx can favor fuel economy by accepting higher NOx generation in the burning process.
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ReniusTUM 2009
Energy saving by el. aggregates, J. Deere 7030 (2008)
CLUBOFBOLOGNA 2009Renius/Knechtges
Yearbook VDI-MEG 2008
® R
eniu
s
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Sustainability by CVT efficiency targets (≥ 100 kW)
CLUBOFBOLOGNA 2009Renius Seoul 1993
CIGR Handbook III 1999
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ReniusTUM 2009
TarasinskiJ. Deere 2004CLUBOFBOLOGNA 2009
Full load efficiencies of electric generators/motors
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ReniusTUM 2009
Renius 1999CIGR Handbook IIICLUBOFBOLOGNA 2009
Tractor hydraulics: load-sensing circuit
Symbols ISO 1219
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ReniusTUM 2009
Electric energy for implements, J. Deere 7030 (2008)
CLUBOFBOLOGNA 2009Renius 2008John Deere
® R
eniu
s
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ReniusTUM 2009
Ground drive: Efficiency improvements
Renius 2004CLUBOFBOLOGNA 2009
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FENDT concept study TRISIX 2007
Fendt-TUMCLUBOFBOLOGNA 2009
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ReniusTUM 2009
Tractor-implement: The H. Auernhammer Vision
Renius 2009CLUBOFBOLOGNA 2009
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Data-BUS I for tractor guiding and internal communication
Axles Transmiss. Interface 3 point lift
Engine Displays Hydraulics Brakes
TractorECU
Data-BUS II for process automation and tractor-implement communication
Impactor Virtual terminal Rot. harrowSawing machineTask controller
GPS
Freimann/Renius TUM 2002CLUBOFBOLOGNA 2009
ISO 11 783
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CLUBOFBOLOGNA 2009 Renius 2009
Sustainability: Resources
Alternative fuels and working fluids• Bio-fuels• Hydrogen (fuel cells)• Working liquids• Condition monitoring
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CLUBOFBOLOGNA 2009 Renius 2009
Bio fuels and hydrogen• Bio-diesel in crisis (tax, oil prices)• Waiting for BtL (still too expensive)• Fuel cells for tractors 2022?• On-board H2 generation?
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Courtesy CNH-Fiat 2009
The CNH fuel cell tractor study NH2 - 2009
CLUBOFBOLOGNA 2009
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CLUBOFBOLOGNA 2009 Renius 2009
Alternative working fluids:
Sustainable working fluids are available but not verry popular.
Vegetable oils lubricate well, but are weak in chemical stability.
Vision: Sysnthetic fluids based on sustainable resources.
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Renius 2009CLUBOFBOLOGNA 2009
Condition monitoring
• Working fluid change on demand• Information carrier „system health“• Information carrier for future design
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CLUBOFBOLOGNA 2009 Renius 2009
Sustainability: Environment
Subjects
• Exhaust gas emissions • Other emissions• Physical soil protection
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CLUBOFBOLOGNA 2009 Renius 2009
Exhaust gas emissions
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ReniusTUM 2009
Tractors & mobile machinery
Limits for Europeacc. 97/68/EG.
Additional CO limitsabout const. 5 g/kWh.
Cycle C1, ISO 8178-4
CLUBOFBOLOGNA 2009Renius & VDMA
2009
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ReniusTUM 2009
Renius/Dreher2009
Exhaust Gas Recirculation (EGR) - external - cooled
CLUBOFBOLOGNA 2009
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ReniusTUM 2009
Courtesy Steyr
Sustainability needs new tractor design – example cooler
CLUBOFBOLOGNA 2009
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ReniusTUM 2009
Geimer/Renius2007
Selective Catalythic Reduction – SCR
CLUBOFBOLOGNA 2009
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CLUBOFBOLOGNA 2009 Renius 2009
Other emissions
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ReniusTUM 2009
CLUBOFBOLOGNA 2009
Courtesy FENDT
Spill containerprevents soilpollution
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CLUBOFBOLOGNA 2009 Renius 2009
Physical soil protection
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ReniusTUM 2009
Renius 1999CIGR Handbook IIICLUBOFBOLOGNA 2009
The conflict of sustainable tire inflation pressures
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ReniusTUM 2009
Parameters as affacting soil compaction
CLUBOFBOLOGNA 2009Renius 1999
CIGR Handbook III
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ReniusTUM 2009
VDI Guideline 6101VDI-MEG 2007CLUBOFBOLOGNA 2009
Sustainable traffic ability of soils, VDI Guideline 6101 (2007)
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Control of soil pressures by tire inflation pressure
CLUBOFBOLOGNA 2009Schwanghart 1994
CIGR Handbook III 1999
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Galileo Galilei statet in his „Discorsi“ (1638): if all dimensions of a system are enlarged bythe same factor, all supporting elements seem to be overloaded.
This is the problem of large ag machinerey:- A scale factor λ influences the weight by λ3
but the tire contact only by λ2
- If a tractor is enlarged by λ, tire dimensionsmust be enlarged by λ1,5 to keep the tire-soilcontact pressure constant.
CLUBOFBOLOGNA 2009Galileo Galilei 1638
Söhne, Bekker, Renius et. al.
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ReniusTUM 2009
Courtesy Deutz-FahrCLUBOFBOLOGNA 2009
Sustainable soil contact pressure and ruth depth
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ReniusTUM 2009
VDI Guideline 6101 VDI-MEG 2007CLUBOFBOLOGNA 2009
On-land ploughing can reduce subsoil compaction
conventional on-land
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CLUBOFBOLOGNA 2009 Renius 2009
SustainabilityHuman factors
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ReniusTUM 2009
Renius 2009BLB 2008CLUBOFBOLOGNA 2009
Fatal tractor overturns in GER – a sustainable reduction
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ReniusTUM 2009
Knechtges2009
Sustainable noise reducion within tractor cabs
CLUBOFBOLOGNA 2009
kW dB(A)
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ReniusTUM 2009
Bystander noise level of commercial tractors 1998
ReniusTUM 2004
SchauerVDMA 1998CLUBOFBOLOGNA 2009
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Munich Research Tractor,developed at TUM 1983 -1988
Renius/KirsteTUM 1988
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ReniusTUM 2009Courtesy CNH 2009CLUBOFBOLOGNA 2009
Tractor cab: arm rest control and instructor seat
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CLUBOFBOLOGNA 2009Renius
TUM 2009
Sustainability increases first costs
Grade of sustainability
Trac
tor c
osts
per
kW
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Renius TUM2009
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ReniusTUM 2009
Summary and conclusions• Sustainability generates higher tractor first costs• Regulations can push those sustainable technologies
which are not driven by the market• High level sustainability is reality in the high tech
markets with however further refinements• Low level sustainability is reality in the lower developed
countries with more or less large deficits • Countries with a lower tech level should adopt proved
technologies. I see high priorities for ROPS, reduced engine emissions, noise reductions, energysavings and „material saving durability“.
CLUBOFBOLOGNA 2009
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ReniusTUM 2009
CLUBOFBOLOGNA 2009
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Geimer/ReniusVDI-MEG Yearbook Ag Eng 2010
First commercial double clutch power split CVT, CNH 2009
CLUBOFBOLOGNA 2009
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ReniusTUM 2009
Engine speed
Pum
p Fl
owEnergy saving
for power steering
Renius 1980 and 2009CLUBOFBOLOGNA 2009