Portable Emissions Measurement System

Doosan Industrial Vehicles approached Millbrook Proving Ground looking for independent assistance with emissions and fuel testing.


Doosan Industrial Vehicles approached Millbrook Proving Ground looking for independent assistance with demonstrating the emissions and fuel economy performance of its D30S-5 DIESEL ENGINE 3-tonne forklift truck.

The Challenge

Following a technical meeting to understand the challenge and the extremely tight timescales required, Millbrook decided that the most effective approach would be to use its PEMS system and a bespoke test programme on its track facilities.

The Millbrook Approach

First, Millbrook’s engineers innovatively fitted the vehicle with the PEMS equipment utilising a trailer, before replicating the initial assessment duty cycle using Millbrook’s remote driver guidance system. This allowed testing to take place using Millbrook’s constant speed facility.

Millbrook then carried out repeat cycles to get a baseline figure for each pollutant and fuel consumption. Doosan then implemented various optimisation strategies with Millbrook testing each one several times. From all of the test data Millbrook was able to identify the most efficient overall strategy, which demonstrated a reduction in fuel consumption of 33% and a significant reduction in all regulated gaseous air quality emissions.

The Result

The programme more than met Doosan’s initial requirements and allowed them to demonstrate the improvements to their customers.
Building on this Millbrook will now move onto carrying out further detailed testing in its Variable Temperature Emissions Chamber (VTEC) to fully replicate the end customers test programme and provide a full set of data for Doosan.

Paul Watson, Doosan UK General Sales Manager, commented “We are extremely grateful to Millbrook for providing an excellent programme. We came knowing what we needed and that we had an extremely tight window for it to be delivered and Millbrook found an excellent solution, with great support to meet our challenges.

“We look forward to building a successful relationship with Millbrook to demonstrate the capability of our products and already have plans for our new Tier IV level product to be assessed by Millbrook.”

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