Real-world driving behaviour

With increasing complexity of engine management system there is a tendency for traditional driving cyles to become further and further removed from reality. So for a sensible evaluation of emissions and fuel consumption of road vehicles in the field there is an urgent need for 'real-world' driving patterns. Existing 'standard' driving cycles can...

Heavy-duty approval test cycles: Assessment of currently applied test cycles and theories for the development of new duty cycles

In the development of the new emission reduction technologies, the benefits of the use of these technologies must be assessed for real-life engine use. As in practice engines are developed to perform as good as possible on the approval test cycle on the basis of which emission limits are set, it is of the utmost importance that the engine load...

Heavy duty test cycles and in-use compliance testing

Measurement procedures for the legal limitation of emissions from heavy duty engines should adequately reflect the actual use of such engines in practice. Equally important is the possibility to monitor the emission performance of certified engines on the market. This paper gives a short overview of the experiences with the Dutch in-use...