KleenAir Systems has announced that it has received an order from Johnson Matthey for almost $200,000 worth of units of its 'CarbonGuard' Thermal Management System.

The systems will be used to enhance performance of the particulate filters ordered by New York City Transit for retrofitting on part of their bus fleet in accordance with a new program unveiled last month.

According to KleenAir Systems its CarbonGuard device helps to achieve the temperature parameters required for a particulate filter to regenerate in order to remove accumulated soot particles.

'CarbonGuard technology has been developed to ensure reliable performance of particulate filters under the most difficult conditions of cold weather and stop-and-go applications typical of urban buses,' explained Robert Gooliak, president of CCT.

Prototypes for a variety of applications are now with a number of major automotive manufacturers in the US and in Europe, with the company claiming its technology can significantly reduce the emission of nitrogen oxides.