Fueltech Solutions

Combustion Research Unit


The CRU is the ideal tool for characterization of fuels ignition and combustion properties.
From a small amount of fuel sample, a user defined test program covering of up to 20 different physical conditions can be run. This product is used within development of diesel fuel-compositions and additves for optimization of diesel fuel. 


Testing over a range of conditions may reveal more information about the specific fuel or additive than a single point test which is typically used for determination of Cetane Number. Cetane Number instruments are typically testing at a pressure and temperature condition equal to low load in a modern Diesel Engine.

This way CRU has successfully been used as a tool for screening fuel additives and diesel fuel components, prior to the much more expensive and time consuming Engine tests.

Standard Edition CRU Features

Additional features for Standard Edition CRU

CRU – Standard configuration

The standard Edition CRU comes with a multi-hole automotive common rail diesel injector and a combustion chamber geometry suitable for the wide spray pattern. The user software supports user defined test program consisting of up to 20 physical conditions per sample, and a software tool for analysis and presentation of the results.

The charge mixing feature automatically blends in a user defined fraction CO2 or other inert gas to reduce O2 content of charge. This is a useful feature for mimicking EGR (Exhaust Gas Recirculation) in a diesel engine.

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Customized CRU units

In cooperation with customers Fueltech Solutions have developed tailor-made combustion instrument and features. In addition to CVCC expertise our in-house competence ranges from mechanical engineering to electronics and software development.