Redução de diesel

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VTT PROCESSES

HEAVY-DUTY TRUCK EMISSIONS AND FUEL CONSUMPTION SIMULATING REAL-WORLD DRIVING IN LABORATORY CONDITIONS Nils-Olof Nylund & Kimmo Erkkilä VTT Technical Research Centre of Finland

VTT PROCESSES Kimmo Erkkilä

2005 DEER Conference Aug 21 – 25, Chicago, Illinois, USA

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VTT PROCESSES

CONTENTS

Research on heavy-duty vehicles Rationale for testing complete heavy-duty vehicles Development of test cycles Test results – fuel consumption – exhaust emissions Summary

VTT PROCESSES Kimmo Erkkilä

2005 DEER Conference Aug 21 – 25, Chicago, Illinois, USA

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VTT PROCESSES

RESEARCH INTEGRATE ON HEAVY-DUTY VEHICLES

Finland, like many other countries is highly dependent on road transports Some 75 % of the goods within the borders of Finland are transported on rubber wheels VTT initiated a three-year (2003-2005) multi-client research project to seek fuel savings for heavy-duty vehicles – 6 research institutes and some 20 sponsors from government, industry and transport companies cooperating www.motiva.fi/raskaskalusto (in Finnish)

VTT PROCESSES Kimmo Erkkilä

2005 DEER Conference Aug 21 – 25, Chicago, Illinois, USA

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VTT PROCESSES

THE GOAL OF THE PROJECT - in a 5-year perspective Permanent fuel savings Vehicles & technology 5-10 % Systems & operations Driver & information

VTT PROCESSES Kimmo Erkkilä

2005 DEER Conference Aug 21 – 25, Chicago, Illinois, USA

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VTT PROCESSES

EMISSION CERTIFICATION

For light-duty vehicles, certification is done running complete vehicles – both emissions and fuel consumption are reported Both for the US and Europe, HD emission certification is done using stand-alone engines – the outcome is specific emission values (g/hph or g/kWh) for the engine itself tested over a certain duty cycle – the testing does not in any way reflect the properties of the vehicle itself (weight, aerodynamic drag, design of the driveline etc.) – no requirements to report fuel economy

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