UD Trucks QUESTER Series, Руководство пользователя

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11.SERVICE DATA
11-7
Diesel fuel
Fuel composition plays an important role in engine function, service life and emission pattern. In order to achieve
specified performance in terms of power output and fuel economy, and to meet the emission requirements that the
authorities set, you must only use fuels that fulfil legal requirements and national and international standards. These
standards represent the minimum requirement for market fuels, and they are usually developed in cooperation with
the oil companies and the automotive industry. Examples are
• GB 19147-2013
• EN590 (with nationally adapted cold requirements)
• JIS KK 2204
Most of the fuel sulphur is converted into sulphur dioxide (SO2) in the combustion process, this SO2 is later
transformed into sulphuric acid in the atmosphere and contributes to acid rain.
The particulate (PM) emissions increase with increasing sulphur content. Vehicles fitted with exhaust after-treatment
systems (for instance particulate filters, oxidation catalysts) are particularly sensitive to sulphur.
Maximum sulphur content for fulfilling the different emissions levels
Euro III: max 350 ppm
Euro IV/China IV: max 10/50 ppm
To ensure that the emission requirements are met in a durable way in service for Euro IV/China IV vehicles, sulphur
free fuels (<10 ppm) are recommended.
In no case should the sulphur content exceed 50 ppm.