1. The Future of Urban Trucks and Transport: insights from real-world emissions and fuel economy testing
Nick Molden
3 March 2016

2. Benefits of PEMS
Real on-road testing using Portable Emissions Measurement System is a powerful research method
Authentic and cost effective
Works on all vehicle types
No permanent vehicle modification required
Flexible location
High rate of data acquisition – 1 Hertz
Precision approaching laboratory levels

3. Equipment SEMTECH product range PEMS connects to tailpipe
Captures emissions for CO2, CO, NO, NO2, total hydrocarbons
At 1 Hertz
Air temperature, pressure, humidity
GPS for speed and altitude
Engine data via CANBUS
Fuel economy derived via carbon balance
Weight addition ~100 kg

4. Vehicle rating scheme (1)
Vehicle rating scheme based on their real-world NOx emissions
Initially on cars, but shortly to extend to vans
Using existing database and test programme
To apply across European Union
Non-statutory complement to new Real Driving Emissions regulations
But will also
Discriminate between high and low emitters, rather than just pass/fail
Be updated for each model year to keep up with new calibrations
Ratings will be published and put in the public domain
Manufacturers and consumer media can adopt as independent, voluntary standard
Analogous to EuroNCAP

5. Vehicle rating scheme (2)
Advisory Board to review methodology on on-going basis, including
Imperial College, London
University of Cambridge
King’s College, London
International Council on Clean Transportation
Planned launch in early 2016
100 Euro 6 cars to have been tested by then
Robust, independent standard needed to measure and incentivise actions to bring about air quality improvements
Expand to rate CO2 and fuel economy, and other vehicle types

6. Scenarios for PEMS testing
20 mph speed limits
20 mph steady-state better than 30 mph transient, but worse than 30 mph steady
Speed humps
Questionable for emissions, fuel economy, noise and wear-and-tear
Bus prioritisation
Passenger loading has to be high to compensate for second-order effect on traffic flow in space-constrained urban areas
Out-of-hours deliveries
Significant opportunity for emissions reduction and fuel saving
Traffic light phasing
Smooth traffic flow often the common factor

7. Nick Molden, Chief Executive Officer nick@emissionsanalytics
Nick Molden, Chief Executive Officer +44 (0) (0)