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FILTRATION Cleaner fuel delivery


Multi-stage filtration system takes the control of impurities in diesel fuel to new levels resulting in cleaner engine performance.


T


❱ ❱ Three stage coalescing filtration media results in cleaner fuel for modern diesel engines


he Parker Hannifin Racor brand now includes new coalescing filtration media that


represents a technological step change in diesel fuel filtration. Unlike conventional barrier


water separators, which separate water from fuel with a single hydrophobic barrier filter element, the new Aquabloc3D elements use three distinct stages to ensure only clean fuel passes through to the engine. Aquabloc3D has been designed as an upgrade and replacement for existing water separator spin-on filters used in Parker’s products found on a wide range of trucks, buses, agricultural and construction machinery. The technology stems from Parker’s experience in the field of


multistage coalescer elements found in many airports, refineries, marine applications and power generation. Water and other impurities can have a severe impact on engine efficiency, as well


as service and maintenance requirements. Uncontrolled fuel impurities increase fuel and service costs, cause damage to expensive engine components and reduce the useful life of diesel powered vehicles and machinery. As a result of the industry’s drive towards sustainability, cleanliness and efficiency, today’s fuels are ever-more complex, containing significantly increased levels of additives. In particular, bio-diesel fuels made from vegetable oil, tallow and waste animal oils/fats present problems for effective water separation due to low interfacial tension (IT) and these fuels’ ability to blend with water. The coalescing media is used in a spin-on filter element canister that contains an


innovative multi-stage filtration system. As dirty wet fuel enters the Aquabloc3D element it firstly encounters a high-capacity synthetic pleated particle filtration media that removes larger unwanted contaminants such as dirt and impurities while maintaining maximum flow. In the second stage, fuel passes through multiple wrapped layers of plasma-treated coalescer depth media. Here, the partially-filtered fuel interacts with the multi- density coalescer, effectively growing water droplets of greater than 200µm from emulsified droplets of less than 5µm. These large droplets then fall out of the flow stream through gravity to a collection bowl, separating emulsified water from the fuel. Finally, before the fuel leaves the filter, there is a central hydrophobic cartridge, which prevents any of the now large droplets from exiting the filter and re-entering the fuel stream.


28 /// Automotive Test & Validation 2018


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professional Society that exists to promote awareness of the discipline of environmental engineering, and


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Automotive Test & Validation 2018 automotiveTV@concordepublishing.com


Editorial


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Automotive Test & Validation 2018 is produced by Concorde Publishing Ltd in association with the Society of Environmental Engineers


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Convention. Apart from any fair dealing for the purpose of private study, research, criticism or review, as permitted under the Copyright, Designs and Patents Act, 1988, no part may be reproduced, stored in a retrieval system, or transmitted in any form or by any means,


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