Energy / Climate Change

December 7, 2007


Nissan Motor Develops Clean Diesel Technology Meeting SULEV Standards

Keywords: Energy Conservation Manufacturing industry Transportation / Mobility 

Nissan Motor Co. announced on August 6, 2007, the development of a new clean diesel technology that uses high-performance catalysts to meet the California super-ultra-low emission vehicle (SULEV) standards, equivalent to the Tier 2 Bin 2 emission requirements of the U.S. Environmental Protection Agency (EPA).

The high-performance catalyst, or HC-NOx trap catalyst, has a design that incorporates a hydrocarbon (HC) trap layer to trap Nitrogen Oxide (NOx) for purification. Using trapped HC and a small amount of oxygen (O2), the catalyst produces hydrogen (H2) and carbon monoxide (CO) with a high NOx reduction efficiency, thereby providing a highly efficient NOx purification method. Nissan has already announced a clean diesel technology that meets the Tier 2 Bin 5 standards. The new HC-NOx trap catalyst technology enables the company to achieve cleaner diesel emissions that meet the stringent SULEV standards set by the state of California. To meet the SULEV standards, HC in exhaust emissions must be reduced by about 90 percent and NOx by about 70 percent over the Tier 2 Bin 5 standards.

Under the Nissan Green Program 2010, Nissan has announced a plan to accelerate the introduction of clean diesel vehicles to meet emissions standards in the near future from fiscal 2010. New clean diesel technology is regarded as an important to meet more stringent standards requiring that the exhaust should be as clean as the air.

Posted: 2007/12/07 10:45:59 AM
Japanese version