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NYK Adopts Fuel Additives in Diesel Engines of Cargo Handling Equipment

October 8, 2004

As an air quality conservation initiative, Nippon Yusen Kaisha (NYK) recently implemented addition of smoke suppression type fuel additives (ECONOFREE A produced by Nippon Yuka Kogyo Co., Ltd.) in fuel oil used to power diesel engines in the Company's cargo handling equipment at the Tokyo Container Terminal. This measure has been undertaken with the aim of reducing soot and smoke emission from exhaust gas.

The Tokyo Container Terminal is not regulated under the Tokyo Metropolitan Government environmental conservation bylaw in terms of exhaust gas emission from diesel-fueled vehicles. From April 2005, however, particulate matter (PM) emission will be further controlled to the level of 0.18g/kWh (in case of diesel vehicles with gross weight of over 2.5 tons). This level is expected to be lower by the Company's use of the newly adopted fuel oil additives.

The Company's method of mixing additives with fuel is unique and totally different from the use of a device to reduce PM emission, which is specified for diesel-fueled vehicles under the Tokyo Metropolitan Government bylaw.

Test results have shown that PM emission from exhaust gas generated by cargo handling equipment diesel engines (400kW, 1500rpm) with the smoke suppression additives (at output power of 80kW) is reduced by 25.0% based on the unit exhaust gas (g/Nm³) and 40.0% based on unit output power (g/kWh), compared to engines run without such additives.

Moreover, the use of the additives reduces fuel consumption and CO2 emission, which is considered to be a factor in global warming, by 2%. Since additional construction and adjustment have not been required, it is expected that decreased costs for fuel will be sufficient to cover necessary costs. The Company, having assessed that the use of the additives is effective for the reduction of air pollutants, has decided to expand use of the fuel oil additives used in for vessels to cargo handling equipment as well.