Diesel engine manufacturers have expressed concerns with the specifications of biodiesel and effects on injectors.From paultan.org, Diesel injector makers voice out concerns over biofuel
Having announced its concerns over the reported October implementation of B10 biodiesel, BMW Group Malaysia has brought our attention to a 2012 joint-statement by five diesel injector manufacturers – Delphi, Denso, Bosch, Continental and Stanadyne – detailing the possible effects of biofuels, or fatty-acid methyl esters (FAME), on diesel engines.
Fuel sources like rapeseed methyl ester, soybean methyl ester and palm oil methyl ester are collectively known as FAME. The statement says, “It must be recognised that the physical and chemical characteristics of bio components are significantly different to conventional fuels and that care must be taken in their specification and use,” adding that “many vehicles, engines and equipment are not designed to run on them.”
The statement reveals that the European diesel fuel standard EN 590:2009 covers diesel blends with up to 7% FAME (B7 biodiesel), but adds that the FAME standard EN 14214:2009 is being extensively revised to facilitate blending of up to 10% FAME (B10 biodiesel).
This is in Malaysia, but it points out the care in manufacturing required to avoid damage to diesel engine parts. The varying quality of the fuel from small producers and homebrew biodiesel makers seemed like a problem with engine performance and longevity.