Porous injection formula silencer

The utility model provides a porous injection formula silencer, the utility model relates to a technical field that automobile exhaust eliminated the noise. It is that preceding end cap seal detains on the left end mouth of the tubular casing of ellipse for the volume of overcoming present single silencing pot and the restriction that the quality received the automobile automobile body, and back end cap seal detains on the right-hand member mouth of the tubular casing of ellipse, preceding baffle all sets up inside the tubular casing of ellipse with the back baffle, cuts out first cavity with inside the parting on the right side from the left hand of the tubular casing of ellipse, second cavity and third cavity, the core pipe that admits air passes the front end housing from the left hand right side, behind preceding baffle and the back baffle after the baffle right side expose one section, the core pipe that admits air exposes one section on the left of the front end housing port is the tail gas air inlet, exhaust core pipe exposes one section in the left side of back baffle after rear end cap and back baffle are passed to a dextrad left side, it is the tail gas discharge port that exhaust core pipe exposes one section port on the rear end cap right side, opening of evenly distributed has a plurality of air vents on the pipe wall that dew was managed with the core that admits air of dew in the second cavity in first cavity. Because the regulating action of porous injection for backpressure lower dynamic property and the economic nature of having guaranteed engine of engine under high rotational speed.