Insert the title of your presentation here. Presented by Name Here Job Title - Date

Transcription

1 Insert the title of your presentation here Presented by Name Here Job Title - Date

2 New spray suppression Insert the title of your technology presentation here Type Approval under Article 20 of the framework Directive 2007/46/EC Presented by Name Here Presented Job Title -by Date Martin Dodd 5 th July 2010

3 Summary Innovative aerodynamic design Improves safety for all road users Reduces CO 2 emissions and fuel consumption Reduces cost of freight transport Helps to improve European competitiveness Page 3

4 How the technology works Direction of airflow and spray 1. Spray enters the flap and is forced to change direction towards centre of vehicle 2. Air passes through while water is collected and deposited onto the road 3. The flap suppresses water for improved visibility (and improves airflow which reduces CO 2 emissions) Page 4

5 Improves visibility Energy absorption system New technology improves visibility for road users Energy absorption New technology New technology Page 5

6 Component testing New technology tested against Directive requirements Testing conducted by UK type approval authority (VCA) Larger test sample tested in five locations: 4 corner points 25mm from edge 750mm 1 point in centre of sample 500mm Test result >92.5% compared to requirement of >85% Page 6

7 System testing Independent vehicle spray suppression tests conducted by TRL - Based on procedure developed for the UK Department for Transport - Suitable for consecutive back-to-back comparative tests Vehicles used were of typical European configuration Measurements taken by single cross-track laser Data used to measure obscuration of the spray cloud Results taken at 1, 2 and 4 seconds behind vehicle Results analysed to compare performance between new and conventional technology Page 7

8 Minimum requirements of Directive Test using a three axle tractor unit and three axle semi-trailer Both vehicles fitted to Directive requirements, with semi-trailer as follows: 30 insertion for current technology A 200mm insertion for new technology 200mm for both tests B Test configuration Mean obscuration over time period of 1 sec 2 sec 4 sec Energy absorption New technology <250mm <250mm 120mm for both tests % difference 3% 4% 5.5% Results show equivalent levels of safety Page 8

9 Maximum spray suppression test Test using a three axle tractor unit and three axle semi-trailer Both vehicles fitted to Directive requirements, with semi-trailer as follows: 30 insertion for current technology A 200mm insertion for new technology 200mm for both tests B Test configuration Mean obscuration over time period of 1 sec 2 sec 4 sec Energy absorption New technology <250mm <250mm 120mm for both tests % difference 40% 40% 45% Results show superior levels of safety Page 9

10 Bodywork mounted configuration Test using a three axle tractor unit and three axle semi-trailer Both vehicles fitted to Directive requirements, with semi-trailer as follows: 100mm Test configuration Mean obscuration over time period of 1 sec 2 sec 4 sec <250mm <250mm <300mm 200mm Energy absorption New technology % difference 14% 19% 33% Results show superior levels of safety Page 10

11 Track testing Energy absorption system Energy absorption system New technology New technology Page 11

12 Reduced fuel consumption Initial Computational Fluid Dynamic (CFD) analysis conducted by Strathclyde University, Glasgow, UK in 2007 Theoretical analysis on 26t, six wheel rigid truck predicted 2.3% reduction in fuel consumption due to reduction in drag Co-operative Retail Logistics undertook fleet trials in 2009 and 2010 with the following results: 2.4% reduction on 18t four wheel rigid trucks 1.8% reduction on 26t six wheel rigid trucks Indicates high correlation between theory and real world Page 12

13 Reduced fuel consumption Vehicle tests at independent facility (Millbrook, UK) - Three axle tractor unit and three axle semi trailer - Tests compared new and conventional technologies on whole vehicles - Results show new technology reduces aerodynamic drag and fuel consumption, improving carbon emissions Test speed (km/h) Reduction in fuel consumption with new technology % % Page 13

14 Incompatibilities with current type-approval requirements In order to grant EC type-approval: New provisions required for air/water separator systems with rain flaps of the air/water separator type Tests for air/water separator type devices need to include tests with larger test sample for rain flaps of the air/water separator type - Would also require higher water collection limit of 92.5% instead of 85% Increase force used to assess deflection of rain flap from 3N per 100mm to 10N per 100mm (because semi rigid characteristic of new technology is fundamental to performance) Page 14

15 Incompatibilities with current type-approval requirements Reduce coverage of rain flap inside mudguards from 30 to 200mm B (because new technology is semi-rigid) A A 200mm 30 B 200mm Page 15

16 Presented by Martin Dodd Senior Research Engineer Tel: +44 (0) Do You Have Any Questions? Page 16