PEMS Testing reveals how much air pollution (NOx, CO), greenhouse gas (CO2) and fuel economy (MPG) is produced during real world driving

Our Portable Emissions Measurement System (PEMS) uses the same underlying technology found in a traditional testing laboratory but packaged for on-board installation. It measures the gases coming out of the tailpipe, as well as recording how and where the vehicle is being driven. The technology is well established and offers a high level of precision and repeatability.

 The advantages of PEMS include rapid installation, no modification to the vehicle, and true in-use performance data. Combined with our flexible and adaptable approach to testing which allows for site specific testing and the ability to extract maximum value from the data, PEMS testing with Emissions Analytics is the best option for understanding how your product works on the road.

What we measure

  • Carbon monoxide (CO) and Carbon dioxide (CO2)
  • Nitric oxide (NO) and Nitrogen dioxide (NO2)
  • Oxides of Nitrogen (NOx = NO + NO2)
  • Total hydrocarbons (THCs)
  • Particulates
  • Fuel economy (MPG) and Fuel consumption (L/100km)

What we test

  • Passenger cars
  • Light commercial vehicles
  • Heavy duty vehicles
  • Non-road mobile machinery
  • Agricultural machinery

Types of testing

  • Benchmarking – vehicles and products, such as fuels
  • Intervention – before and after testing for products, such as additives
  • Regulatory – pre-type-approval design and validation and post-type-approval in-use surveillance and testing for Real Driving Emissions (RDE), and Worldwide harmonized Light vehicles Test Procedures (WLTP).
  • Non-regulatory – off-cycle real-world testing
  • Problem diagnosis and resolution

PEMS test applications

  • Mainstream fuels – premium fuel, E10 gasoline
  • Additives – engine cleaners, fuel enhancers
  • Exhaust aftertreatment systems – Selective Catalytic Reduction Technology, Lean NOx Trap
  • Tyres – heat-treated rubber
  • Low carbon technologies – hydrogen-on-demand systems, eFan micro hybrid systems
  • Alternative fuels – compressed natural gas, liquified natural gas, biofuels
  • Engine calibrations – optimisation testing

Projects we have undertaken

  • Innovate UK Low Carbon Truck Trial
  • Gatwick Airport air quality modelling
  • Testing of Techron for Chevron
  • Validation of performance claims for Tesco’s Momemtum 99 fuel
  • Developmen of Real MPG data for Motor Trend, USA
  • Independent tests for auto motor und sport, Germany
Emissions Analytics