Clean Diesel

Diesel has traditionally been the fuel of the maritime industry, which makes the absence of a diesel outboard engine even more puzzling. Production of the 50 hp Yanmar Dtorque 111 turbo-diesel has begun and the benefits over traditional outboard engines seem overwhelming.

After a year-long investigation, researchers have revealed the code used by Volkswagen to cheat diesel emissions tests. The announcement coincides with preliminary investigations by the Stuttgart public prosecutor’s office​ into alleged "fraud and criminal advertising" in diesel cars at Mercedes.

​Electric vehicles are hitting the roads in greater numbers every year, but in the meantime, scientists are working on ways to clean up existing fossil fuels. A new refining process uses a potassium catalyst to reduce the amount of sulfur in gasoline and diesel to a fraction of their current levels.

In what might be a case of two wrongs making a right, an Australian startup has shown that it is possible to get a cleaner blend of fuel by combining oil derived from old tires with diesel. ​

Just weeks after producing its first batch of synthetic diesel fuel made from carbon dioxide and water, Audi has laid claim to another synthetic, clean-burning and petroleum-free fuel called "e-benzin." The fuel was created by Audi's project partner Global Bioenergies, in France.

Mazda will debut its next-generation ‘SKY-G’ and ‘SKY-D’ engine line-up, along with its new ‘SKY-Drive’ automatic transmission, which are designed to improve fuel economy without sacrificing performance, at the upcoming Tokyo Motor Show.