Automotive exhaust purification system

摘要

PPROBLEM TO BE SOLVED: To provide an exhaust emission control device for an automobile, promptly raising the temperature of a catalyst to a temperature for cleaning exhaust emissions without deteriorating fuel economy. PSOLUTION: This exhaust emission control device for the automobile is equipped with: a catalyst body 2 arranged in an exhaust passage from an engine and removing nitrogen oxides from exhaust emissions g discharged from the engine; and a tubular member 3 storing the catalyst body 2. A heat insulating member 4 is provided in the tubular member 3 to divide the tubular member 3 into an upstream side and a downstream side, thereby thermally blocking out a tubular member 3a upstream of the heat insulating member from a tubular member 3b downstream of the heat insulating member 4. PCOPYRIGHT: (C)2011,JPO&INPIT