Patent application number | Description | Published |
20120186206 | EXHAUST GAS PURIFYING FILTER - There is provided an exhaust gas purifying filter, which includes an inflow surface into which exhaust gas including particulate matter flows, an exhaust surface from which purified gas is exhausted, and a filter substrate which is constructed of a porous body. The filter substrate includes a porous partition and a gas passage which is enclosed by the porous partition, a porous film which includes silicon carbide is provided on a surface of the porous partition. An average pore diameter of the porous film is more than 0.5 μm and 3 μm or less. | 07-26-2012 |
20120186212 | EXHAUST GAS PURIFYING FILTER - There is provided an exhaust gas purifying filter, which includes an inflow surface into which exhaust gas including particulate matter flows, an exhaust surface from which purified gas is exhausted, and a filter substrate which is constructed of a porous body, the filter substrate including a porous partition and a gas passage which is enclosed by the porous partition, a porous film which includes silicon carbide is provided on a surface of the porous partition, and in a pore diameter distribution of the porous film, pores with the pore diameter of 0.01 μm or more and 3.0 μm or less are 70% or more of total volume of the pores, and pores with the pore diameter of 0.01 μm or more and 0.3 μm or less are 5% or more and 90% or less of total volume of the pores. | 07-26-2012 |
20120186240 | EXHAUST GAS PURIFYING FILTER - According to the present invention, there is provided an exhaust gas purifying filter capable of effectively removing collected particulate matter. An exhaust gas purifying filter of the present invention includes an inflow surface into which exhaust gas including particulate matter flows, an exhaust surface which exhausts purified gas, and a filter substrate which is constructed of a porous body, wherein the filter substrate includes porous partitions and gas passages which are enclosed by the partitions, and a porous film, which includes silicon carbide and pores having a smaller pore diameter than the pores of the partitions, is provided on the surface of the partitions, and a silicon dioxide layer is formed on at least an outer surface portion of the porous film. | 07-26-2012 |
20120269693 | EXHAUST EMISSION CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE - An object of the present invention is to provide an exhaust emission control device of an internal combustion engine which is used in purification of exhaust gas and achieves both high catalytic activity at low temperature and high durability at high temperature. In an exhaust emission control device of an internal combustion engine of the present invention, a catalyst is disposed in an exhaust path of the internal combustion engine, at least one kind of the catalyst is noble metal supporting silicon carbide particles, and the noble metal supporting silicon carbide particles include a silicon oxide layer in which noble metal particles are supported on a surface of silicon carbide particles having an average primary particle diameter of 0.005 μm or more and 5 μm or less. | 10-25-2012 |