Department for Transport – Light goods vehicle – CO 2 emissions study Framework ref: PPRO 4/45/4 (Lot 2) Tasks 4 & 8 Wednesday 11 th February 2009 Presented at LCVP Passenger Car Working Group By Phil Stones – Principal Engineer Powertrain Millbrook Proving Ground
Task Aims • Task 4 – To understand the effect of vehicle inertia on CO 2 emissions. • Task 8 – To understand the effect on CO 2 of operating over different drive cycles. . – To try and understand the effect on CO 2 of operating at different inertias over different drive cycles. .
Contents • Description of test vehicles • Description of test inertias • Description of vehicle drive cycles • Test Matrix as completed • Findings – Effect of inertia – Effect of Drive cycles – Effect of Road Load Coefficients • Questions / Comments
Test Vehicles Type Unladen Gross Engine Power Count of Approval Marque Range Weight Vehicle Make BHP Registrations Category (MV) Weight Class 1 Peugeot Partner PSA 74 1130 1730 9,036 New shape Class 2 FORD TRANSIT FORD 85 1580 2600 8,676 Class 3 MERCEDES SPRINTER 109 2180 3500 6,573 MERCEDES CVS
Selected Inertias Peugeot Partner Ford Transit Mercedes Sprinter Equivalent Equivalent Equivalent Actual Actual Actual Cookbook Cookbook Cookbook Ref 1230 1250 1680 1700 2232 2270 Mass 50% 1430 1470 2090 2040 2816 2270 Payload GVW 1730 1700 2600 2270 3500 2270 •Ref mass = OEM Declared kerb weight + 100kg •Propose to test each vehicle at actual inertia rather than cookbook •CVs over 1700kg will use 1.3 factor on their dyno coefficients •50% payload will be adjusted according to Task 3 findings •Use coefficients from reference mass for both other inertias (50% payload and GVW)
Drive Cycles Comparison of NEDC, FIGE, Artemis 130 and UDDC Drive Cycles 140 NEDC FIGE Artemis 130 120 UDDC 100 Vehicle Speed (kph) 80 60 40 20 0 0 500 1000 1500 2000 2500 3000 3500 Time (Seconds)
Test Matrix Class Class 1 Class 2 Class3 Vehicle Make Peugeot Ford Mercedes Model Partner Transit Sprinter Tests at Cookbook Load Cold NEDC Ref Mass Y Y Y Hot NEDC Ref mass Y Y Y Hot NEDC 50% GVW Y Y Y Hot NEDC GVW Y Y Y Hot UDDC Y Y Y Hot FIGE Y Y Y Hot Artemis Motorway Y Y Y Tests Coastdown Ref Mass Y Coastdown GVW Y Tests at Coastdown Load Hot NEDC Ref mass Y Hot UDDC Ref Mass Y Hot Artemis Motorway Ref Mass Y Hot NEDC GVW Y Hot UDDC GVW Y Hot Artemis Motorway GVW Y
Effect of inertia on CO 2 over NEDC Phases – Peugeot Partner Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for a Peugeot Partner 200 1470kg inertia 190 1650kg inertia 1960kg inertia 180 170 160 CO 2 (g/km) 150 140 130 120 110 100 ECE EUDC Overall
Effect of inertia on CO 2 over NEDC Phases – Ford Transit Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for a Ford Transit 240 1810kg inertia 2150kg inertia 230 2438kg inertia 220 210 CO 2 (g/km) 200 190 180 170 160 150 ECE EUDC Overall
Effect of inertia on CO 2 over NEDC Phases – Mercedes Sprinter Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for a Mercedes Sprinter 330 2270kg inertia 310 2840kg inertia 3500kg inertia 290 270 CO 2 (g/km) 250 230 210 190 170 150 ECE EUDC Overall
Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for each vehicle Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for each vehicle 350 ECE - Peugeot Partner EUDC - Peugeot Partner NEDC - Peugeot Partner ECE - Ford Transit 300 EUDC - Ford Transit NEDC - Ford Transit ECE - Mercedes Sprinter EUDC - Mercedes Sprinter NEDC - Mercedes Sprinter 250 CO 2 (g/km) 200 150 100 1000 1250 1500 1750 2000 2250 2500 2750 3000 3250 3500 3750
Comparison of Carbon Dioxide over the NEDC cycle at different test inertias for each vehicle Increase in grammes CO2 per 100kg payload increase ECE EUDC NEDC Peugeot Partner 2.31 1.55 1.83 Ford Transit 3.01 1.72 2.19 Mercedes Sprinter 2.00 1.45 1.65
Comparison of effect of test cycle on CO 2 Comparison of Carbon Dioxide over different cycles for a each test vehicle 400 Peugeot Partner 1470kg Ford Transit 1810kg 350 Mercedes Sprinter 2270kg 300 250 CO 2 (g/km) 200 150 100 50 0 ECE EUDC Cold NEDC Hot NEDC Artemis 130 UDDC FIGE
Effect of Cookbook Vs Coastdown - Transit Comparison of Carbon Dioxide with different road load models over different cycles for a Ford Transit 400 1810kg with Cookbook Coefficients 1810kg with Coastdown Coefficients 2438kg with Cookbook Coefficients 350 2438kg with Coastdown Coefficients 300 250 CO 2 (g/km) 200 150 100 50 0 Hot NEDC - ECE Hot NEDC - EUDC Hot NEDC - Overall Artemis 130 UDDC - Urban UDDC - Door to UDDC - Overall Door
Any Questions / Comments Thank you
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