Techniques for reducing the maximum temperature and temperature gradients in the filter during regeneration of the particulate matter in diesel vehicle particulate matter removal equipment-Method and principle of control of particulate matter burning rate through temperature control of feed gas

摘要

In the present invention, by controlling the burning rate of the particulate matter that could not be realized in the conventional diesel particulate matter removing apparatus, it was possible to greatly reduce the maximum temperature and temperature gradient inside the filter generated at the time of regeneration of the filter.;In order to realize such a result, a system has been devised in which a bypass good control valve is installed so that the flow rate of engine exhaust gas bypassed at the time of regeneration can be introduced as a trap.;In the present invention, in order to lower the maximum temperature inside the filter, a control principle that introduces the engine exhaust gas into the filter during regeneration and controls the flow rate of the engine exhaust gas to reduce the maximum temperature occurring in the filter, In order to lower the internal axial and radial temperature gradients, the engine exhaust gas is introduced into the filter during regeneration and the effect of reducing the axial and radial temperature gradients occurring inside the filter by controlling the introduced flow rate Provide the control principle.