Nissan to reduce platinum use, will develop new diesel exhaust system

Nissan Motor Co. is poised to cut platinum content in its exhaust emission control system for diesel vehicles by half in a new cost-cutting measure. Despite its high price, demand for the precious metal, which is used as a catalyst in exhaust systems, has increased as developed countries introduce ever-tighter emissions regulations. In Japan, legislation requiring manufacturers to slash nitrogen oxide emissions in diesel vehicles comes into force in October, prompting Nissan to find a way to reduce the quantity of platinum used in its vehicles to reduce unit cost. After conducting a study with Nagoya University, the automaker came up with an iron-based alternative with improved durability and lower platinum content. Nissan hopes to develop a mass production technique within five years with government financial aid through the New Energy and Technology Development Organization. (July 23, 2009)