Light and Heavy Duty Fuel Economy
At a glance
Millbrook has well established procedures for determining real-world fuel economy, emissions, and performance changes when using different fuels and lubricants. Chassis dynamometers, powertrain rigs, hub dynamometers and test tracks ideally suited to this kind of testing are located at Millbrook’s facilities in the UK.
Millbrook tests real-world fuel economy on light and heavy duty vehicles. Variable control is key to determining statistically significant differences (or parity) between vehicle test conditions. This is recognized and focused on by Millbrook’s expert engineers when putting together a real-world fuel economy test program.
Real-World Fuel Economy Tests
Test vehicles are prepared with required instrumentation, condition changes (to a baseline or candidate fuel or lubricant) and test medium (mileage accumulation or instantaneous effect). Three expertly controlled tests are conducted to determine average performance for all measurements. The process is then repeated to move and condition the vehicle to the next test point in the matrix (next fuel or lubricant package), and again repeated until the test matrix is complete. The data reported typically shows changes in measurements throughout the program of work and applies statistics to evaluate the significance of these changes.
Typical measurements for differentiation tests include:
- Real-world fuel economy
- Engine/tailpipe emissions (PM, PN, CO2, NOx, HC, CO, others upon request)
- Power and acceleration
- Effects on fuelling components (injectors, inlet valves)
- Effects on lubricant (fuel dilution and wear metals)
Measurements are made over a variety of standard and Millbrook’s own test cycles. These are selected based on the test type, vehicle applicability, and target market. Bespoke cycles can be created for more niche markets such as the off-highway sector.