PowerMix goes Rig New Methodologies for Tractor Efficiency Optimization

AVL Product Development in Motion 2016Chalmers University of Technology, Gothenburg, Sweden

Claudia Pieke & Waldemar Stark

John Deere GmbH & Co KG

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Content

Introduction

• John Deere

• Agriculture Applications & Customer Requirements

• 6M & 6R Systems

• DLG PowerMix

Powertrain-in-the-Loop Test Rig at John Deere

• Motivation for DLG PowerMix replication

• Test Bed Configuration

• Simulation, Visualization, Automation

• Test Results

Conclusion

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John Deere

3

• 70 Factories in 18 Countries - 57 000 Employees, Worldwide

• Agricultural equipment, Commercial & Consumer Equipment, Construction & Forestry and Credit

2016: John Deere world’s leading manufacturer of farm equipment.

Mannheim, Germany

Richards Bay, South Africa

Pune, India

Jiamusi, China

Stadtlohn, Germany

Gummersbach, Germany

Horst, NetherlandsEnschede, Netherlands

Bruchsal, Germany

Zweibruecken, Germany

Arc-les-Gray, France

Saran, France

Madrid,

SpainSantiago, Chile

Catalao, Brazil

Horizontina, Brazil

Rosario, Argentina

Saltillo, MexicoMonterrey, Mexico

Torreon, Mexico

Valley City, NDFargo, ND

Minneapolis, MN

Dubuque, IAHoric

on,

WI

Waterloo, IA

Moline, IL

East Moline, IL

Welland, Ontario

Edmonton, Alberta

Davenport, IA

Des Moines,

IA

Langley, British Columbia

Ottumwa, IA

Springfield, MO

Coffeyville, KS

Fuquay-

Varina, NC

Greeneville, TN

Augusta, GA

Kernersville, NC

Santo Angelo, Brazil

Joensuu, FinlandWoodstock, Ontario

Rock Valley, IA Klemme, IA

Tokoroa, New Zealand

Tianjin, China

Orenburg, Russia

1837: Blacksmith Shop - Self-Scoring Plough

John Deere

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Applications & Customer Requirements

Power Comfort

Reliability Efficiency

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6M & 6R Systems

Engine

Auxiliaries

Transmission

& Driveline

Wheels

Front Hitch

Front PTO

Rear Hitch

Rear PTO

Hydraulics

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Engine

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Drive Strategy

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DLG PowerMix: Overview

DLG = Deutsche Landwirtschafts - Gesellschaft

(German Agricultural Society)

• Official “practical tractor test” to compare fuel efficiency

• Replication of Field Applications (1st part):

Based on real field measurements

12 load cycles, part and full load cycles

Tractor is loaded dynamically (Drawbar, PTO, Hydraulics)

• Transporttest (2nd part)

Road measurement with trailer

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Ploughing(2 cycles)

Cultivating(2 cycles)

Rotary Harrow(3 cycles)

Mowing(3 cycles)

Manure Spreading(1 cycle)

Baling(1 cycle)

DLG PowerMix: 12 Field Cycles

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DLG PowerMix: Field Cycles

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Unscaled dynamic load cycle (Manure Spreading)

Total Load

Drawbar Load

PTO Load

Hydraulic Load

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DLG PowerMix: LoadCar for Field Cycles

400 m oval concrete track

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PTO load unit

Hydraulic load (SCV)

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Wheel brakes

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DLG PowerMix: Transport

• Hilly road

• 6 part runs (only uphill) + flat run

• Trailer weight depends on maxPTO power

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Powertrain-in-the-Loop Motivation for DLG PowerMix Replication

The DLG PowerMix

… is a representative test method but …

… it requires fully functional prototype at DLG

… test results are influenced by outer conditions

Goal: Replication of DLG PowerMix on test rig

• Predict DLG PowerMix results early in development program

• High level of repeatability

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Test Bed Configuration

• 4 Wheel dynos + PTO dyno• Hydraulic load unit• Air conditioning

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Test Bed Configuration

Visualization

Consum

ption

measure

ment

SpeedTorqueRequest

Fuel Exact

AVL In Motion

Pu

ma O

pen

Test Rig

Test

Bed

In

terfa

ce

Road – Tire ContactManeuver Steps

GasBrakeShiftRequest

Vehicle Model

SpeedTorque

Driver Model

3D Road Test Control

CAN

IPG Truck Maker

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Vehicle & Implement Models

PowerMix Field & PowerMix Transport

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Vehicle Model

• Multi-Body-System• Kinematics• Tires• Aerodynamics

DLG LoadCar

• Includes load cycles (desired values)

• Vehicle speed sensor for evaluation

• Kinematics (steering system)

DLG Trailer

• Multi-Body-System• Tires• Hitch

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Test Configuration

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Road Simulation

DLG Test Track & Road Profile „Odenwald“

Road Measurement Online Visualization

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Automation & Visualization

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Test Results: PowerMix Field

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Z3K (full load, rotary harrow)DLG ResultsTest Rig Results

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Good correlation forPTO Power

Comparable vehicle behavior

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Test Results: PowerMix Transport

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Uphill, part run #5

DLG ResultsTest Rig Results

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Comparable vehicle behavior shifting points

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Conclusion

• Powertrain-in-the-Loop test method provides powerful tool to replicate DLG PowerMix

• The test results show good correlation between DLG and Mannheim test rig

• Applicable in early development phase

• Reproducible test results (lab conditions, high level of automation)

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