может катализатор? (если инжекция есть, а температуры нет - катализатор не греет....)
Добавлено через 25 минут 40 секунд
вот нашел кол-во серы в топливе в
описании методов регенерации при большом кол-ве отравляющем катализатор...
"Dosing - or HC combustion, is a method of raising exhaust temperature for regeneration by introducing fuel to the exhaust where it reacts with an oxidation catalyst before it enters the DPF. This is done by enriching the combustion process, injecting fuel during the exhaust stroke or by injecting fuel directly into the exhaust. This is a common method and it is a fairly simple way to achieve elevated exhaust temperatures but it does have some drawbacks. Dosing can allow unburned fuel to pass through the system known as hydrocarbon slip. Secondly, temperatures cannot be as closely controlled as other methods. Use of ultra low sulfur diesel fuel (15 ppm sulfur maximum) is required in diesel vehicles equipped with an oxidation catalytic converter (OC) and diesel particulate filter. Using low sulfur (16-500 ppm) or high sulfur (500 ppm or greater) diesel fuel can effectively poison the catalyst destroying it, rendering it useless....
Sulfur itself does not permanently damage the DPF but it will increase hydrocarbon, oxide of nitrogen and particulate matter emissions enough to clog the DPF in a relatively short time. In the United States, ULSD fuel is defined as having less than 15 ppm sulfur content. "
ps
насколько помню у нас гост по солярке допускает до 2000 мг серы...