Search Results

It has long been asserted that optimizing injector cleanliness (preventing the formation of deposits and removing them if they are present) can have a positive impact on fuel economy for heavy-duty diesel engines. However limited amounts of field data exist on more recent engines to support these claims. Also, factors such as small test sample size, varying BTU content of fuel and inconsistent duty cycles in test vehicles can often skew fuel economy study results in a field-test environment. This paper will detail an extensive field study (in which care was taken to minimize the effects of the above mentioned factors that can introduce error) to analyze the effect of consistent dispersant/detergent usage on fuel economy for a grocery delivery fleet.

With the pending introduction of ultra low sulfur diesel fuel, lubricity is becoming a more pressing concern. It has long been recognized that certain additives can dramatically improve fuel lubricity. However when manual addition of liquid additives is used to treat fuels human error can be introduced resulting in incorrect additive concentration or use of an inappropriate additive. To overcome the issues with manual additive addition and provide additional protection for customers using poor lubricity fuels a slow release lubricity enhancing fuel filter was introduced in 2002. This filter was effective but had some limitations. To address these limitations and to further optimize this technology a novel release mechanism was developed and introduced in 2006. This paper will document the development and validation of this technology.