摘要:
A process for regenerating an exhaust gas after-treatment device adapted to be fitted in an exhaust line of an internal combustion engine arrangement, wherein the exhaust gas after-treatment device comprises a particle filter, characterized in that the process comprising the steps of : a) setting the temperature of the exhaust gases at the particle filter within a first temperature range comprised between 420 and 550 degrees Celsius; b) maintaining the temperature of the exhaust gases at the particle filter at the first temperature range during a first period of time; c) after the first period of time, further gradually increasing the temperature at the particle filter to a second temperature range which is over 550° degrees Celsius. The temperature at the particle filter is increased at a controlled rate of temperature increase over time. The temperature at the particle filter is increased at a rate of temperature increase over time which decreases over time.
摘要:
A process for regenerating an exhaust gas after-treatment device adapted to be fitted in an exhaust line of an internal combustion engine arrangement, wherein the exhaust gas after-treatment device comprises a particle filter, characterized in that the process comprising the steps of : a) setting the temperature of the exhaust gases at the particle filter within a first temperature range comprised between 420 and 550 degrees Celsius; b) maintaining the temperature of the exhaust gases at the particle filter at the first temperature range during a first period of time; c) after the first period of time, further gradually increasing the temperature at the particle filter to a second temperature range which is over 550° degrees Celsius. The temperature at the particle filter is increased at a controlled rate of temperature increase over time. The temperature at the particle filter is increased at a rate of temperature increase over time which decreases over time.
摘要:
Disclosed is a reactive filter, that is a selective catalytic reduction filter or an oxidative reaction filter, including a porous substrate including internal pores having their inner surface, totally or partially, directly coated with a catalytic zeolite material resulting from an in situ hydrothermal synthesis. Also disclosed is a process for preparing such a reactive filter and the use thereof in an engine exhaust depolluting system.
摘要:
A process for regenerating an exhaust gas after-treatment device adapted to be fitted in an exhaust line of an internal combustion engine arrangement, wherein the exhaust gas after-treatment device comprises a particle filter, characterized in that the process comprising the steps of : a) setting the temperature of the exhaust gases at the particle filter within a first temperature range comprised between 420 and 550 degrees Celsius; b) maintaining the temperature of the exhaust gases at the particle filter at the first temperature range during a first period of time; c) after the first period of time, further gradually increasing the temperature at the particle filter to a second temperature range which is over 550° degrees Celsius. The temperature at the particle filter is increased at a controlled rate of temperature increase over time. The temperature at the particle filter is increased at a rate of temperature increase over time which decreases over time.