License to clean technology

Clean Diesel Technologies, a developer of technological solutions to reduce harmful engine emissions, has entered into a license and distribution agreement with Extengine Transport Systems for China and North America.


Clean Diesel Technologies a developer of technological solutions to reduce harmful engine emissions, has entered into a license and distribution agreement with Extengine Transport Systems for China and North America. Extengine is a California-based developer, manufacturer and supplier of advanced diesel emissions control products and biodiesel fuels.



This license agreement is for the technology, manufacturing and distribution rights for Clean Diesel’s patented Catalyzed Wire Mesh Diesel Particulate Filter (CWMF) technology.



CWMF technology is designed for use in a range of diesel engine particulate emission control applications. Extengine will also be responsible for marketing and demand fulfilment for emissions control systems based on this low cost diesel particulate filter technology in the rapidly developing markets of China and North America.



Extengine successfully demonstrated the CWMF technology in partnership with Clean Diesel to meet the proposed emissions requirements of SEPA, the Environment Protection Authority of China. ‘Official emissions testing in Beijing was conducted using the Extengine PM control filters on several pieces of heavy-duty diesel construction equipment and the results were impressive,’ said Mr. Cui Ping, who supervised the testing for SEPA – VECC, the China EPA Vehicle Emission Control Centre.



‘Extengine and Clean Diesel are now working closely together to commercialise superior particulate matter control systems to meet the growing demand for diesel retrofits from China to California to New York City. In particular, the Clean Diesel wire mesh flow-through filter will appeal as a practical, low maintenance and low cost particulate control device for diesel fleet operators and OEMs worldwide,’ said Phillip Roberts, President of Extengine Transport Systems.



The patented CWMF technology represents a series of durable metallic, low cost filter designs to bridge the gap between low efficiency diesel oxidation catalysts and expensive, limited application heavily catalyzed particulate filters.



The wire mesh filter system has been designed to work on its own or with a synergistic fuel-borne catalyst (FBC), such as Clean Diesel’s Platinum Plus, for more effective performance. This combined FBC/CWMF technology is said to be especially suited to solving the problem of delivering a reliable pollution control solution which can be easily retrofitted for the older, higher emission diesel engines expected to be in service for years to come.


To meet the needs of the significant market in China, this technology is appropriate for use with either high or low sulphur diesel fuel, as well as biofuels. The FBC/CWMF system has also been verified by Clean Diesel under the US Environmental Protection Agency’s Environmental Technology Verification protocol as reducing particulate matter emissions by up to 76 percent, carbon monoxide by 60 percent, hydrocarbons by 80 percent, and NOx by 9 percent. It also provides lower NO2 emissions levels relative to the traditional, heavily catalyzed filter systems. The CWMF systems are available in configurations for use either with or without fuel borne catalyst.