초록 ▼

A filter for cleaning exhaust gases emitted from a diesel engine is disclosed. The filter is composed of a cleaning portion formed of porous ceramic, through which the exhaust gases flow and in which carbon particulates in the exhaust gases are collected, and an outer wall portion formed of the same

A filter for cleaning exhaust gases emitted from a diesel engine is disclosed. The filter is composed of a cleaning portion formed of porous ceramic, through which the exhaust gases flow and in which carbon particulates in the exhaust gases are collected, and an outer wall portion formed of the same kind of material as that of the cleaning portion, which is formed around the cleaning portion so as to be integral therewith. The bulk density of the outer wall portion increases from the inner periphery thereof toward the outer periphery thereof so that the exhaust gases can be prevented from flowing out of the outer wall portion.

대표청구항 ▼

A filter for collecting carbon particulates in the exhaust gases emitted from a diesel engine, comprising: an exhaust gas cleaning portion provided with a large number of interconnected fine pores through which exhaust gases flow; said exhaust gas cleaning portion being provided with an exhaust gas

A filter for collecting carbon particulates in the exhaust gases emitted from a diesel engine, comprising: an exhaust gas cleaning portion provided with a large number of interconnected fine pores through which exhaust gases flow; said exhaust gas cleaning portion being provided with an exhaust gas inlet surface and an exhaust gas outlet surface; and an outer wall portion which is formed around the outer peripheral surface of said cleaning portion so as to be integral therewith, except for said exhaust gas inlet surface and said exhaust gas outlet surface of said cleaning portion; said exhaust gas cleaning portion being formed of porous ceramic, the whole of which has uniform bulk density; said outer wall portion being formed of porous ceramic, the bulk density of said outer wall portion increasing from the inner periphery thereof toward the outer periphery thereof so that the inner periphery of said outer wall portion has a bulk density slightly larger than that of the outer periphery of said cleaning portion while the outer periphery of said outer wall portion has such a high bulk density that the exhaust gases do not flow therethrough.