Denso Corporation and Robert Bosch have established a joint venture in Eastern Europe to develop and manufacture diesel particulate filters (DPFs), with the project commencing in early 2007.

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From 2009, the two companies in partnership will manufacture high performance, diesel particulate filters made of cordierite which will be marketed separately.


As a result of impending implementation of the Euro 5 emission standard for cars and light commercial vehicles sold in the European union, both companies predict that particulate filters will become standard equipment on all new diesel-powered cars in Europe.


Denso has been producing and supplying since DPFs to automakers since 20003, although a range is not currently available on the aftermarket.


Denso and Bosch plan to develop and market cordierite DPFs using the two companies’ combined expertise in diesel system technologies.

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Compared to DPFs made of other materials, cordierite DPFs are light in weight and cause a lower drop of exhaust gas pressure resulting in higher engine performance and efficient purification, the JV partners claimed.


The JV agreement is subject to antitrust authority approval.

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