CN2224919Y

CN2224919Y - Vehicle exhaust pipe

Info

Publication number: CN2224919Y
Application number: CN 95204472
Authority: CN
Inventors: 林信泽
Original assignee: BAOSUJIE STOCK-SHARING Co Ltd
Current assignee: BAOSUJIE STOCK-SHARING Co Ltd
Priority date: 1995-02-23
Filing date: 1995-02-23
Publication date: 1996-04-17
Anticipated expiration: 2005-02-23

Abstract

The utility model relates to a vehicle exhaust pipe, comprising a perforated pipe and an outer pipe which is sheathed at the outside of the perforated pipe. The perforated pipe is a pipe body whose front section is provided with a big pipe diameter, rear section is provided with a small pipe diameter, and circumferential surface is provided with a plurality of through holes; the enlargement part of the front end of the perforated pipe is engaged with the tail pipe of a vehicle; the front and the rear sections are respectively provided with air inlet and outlet rings which are fixed on the both ends of the outer pipe. A plurality of perforations are arranged on air inlet and outlet rings. The both ends of the outer pipe is provided with one ring-hole structure at least along ring surfaces, which enables outside air to rapidly mix with exhaust gas in the perforated pipe to dilute the exhaust gas, decrease engine temperature, and prevent sediment incrustation in the vehicle exhaust pipe from generating.

Description

Automobile exhaust pipe

The utility model relates to a kind of automobile exhaust pipe, particularly relates to a kind of extraneous high-speed air attraction that utilizes, and the waste gas in the main exhaust is watered down, and quicken the eliminating of waste gas, and reduce the automobile exhaust pipe of engine temperature and incrustation.

Fuel is when the engine internal combustion, because of the temperature behind the mixture combustion will be above 4000 °F, can produce very huge heat, these caloric requirements are discharged by outlet pipe, too high because of temperature, the machine oil of script lubricating parts such as the parts of engine such as piston, piston ring, intake and exhaust valve, cylinder wall is wrecked, cause engine can not obtain normal lubrication effect, so vent systems in the power system of vehicle, is occupied very important deal.The waste gas of fuel combustion is discharged via discharge manifold, and discharge manifold is according to engine pattern difference, but bolt is solid on cylinder or cylinder block; the camber of menifold must be eased up; can not there be back pressure to produce, when waste gas flows to silencing apparatus from menifold, can produces a vapour lock; discharge through tail pipe then; do not quicken the power of toxic emission therebetween, waste gas can't quicken to discharge, so often amass in outlet pipe; cause outlet pipe carbon distribution situation seriously to hinder the discharge of waste gas, and cause engine temperature too high.

The purpose of this utility model is providing a kind of automobile exhaust pipe, when waste gas is discharged, can attract ambient air fully to mix, and not only can water down waste gas, reduce engine temperature, and can prevent the generation of incrustation in the outlet pipe.

Of the present utility model being characterised in that: this automobile exhaust pipe comprises that has a perforated tube and the outer tube that is socketed in the perforated tube outside that front and back section thickness differs, before this perforated tube, back segment utilizes respectively into, give vent to anger orifice ring and outer tube two ends are affixed, make ambient air enter outer tube inside via the perforation on the air inlet orifice ring, and the waste gas in the attraction perforated tube mixes fully, enter then in the zone of the less caliber of perforated tube, make ambient air have the waste gas that bigger space can absorb perforated tube inside, and generation sound deadening, by the waste gas after watering down by the perforation of the orifice ring of giving vent to anger and the annular distance structure of outer pipe ring on week post outside the discharge tube, reach and scavenge the purpose of acceleration exhaust.And, this perforated tube front end forms the expansion section, when automobile running, a large amount of ambient airs are successfully entered in the pipe, and the caliber of tail end dwindles, air is mixed apace with waste gas, and compression is quickened to discharge outside, the outer tube two ends respectively are provided with the annular distance structure, help ambient air to enter, discharge, to reduce the effect of waste gas.

Below by most preferred embodiment and accompanying drawing automobile exhaust pipe of the present utility model is elaborated, in the accompanying drawing:

Fig. 1 is the exploded perspective view of the utility model preferred embodiment.

Fig. 2 is the combination stereo appearance figure of the utility model preferred embodiment.

Fig. 3 is the combination generalized section of the utility model preferred embodiment.

Fig. 4 is the good embodiment's of the utility model an installing schematic representation.

As shown in Figure 1, the automobile exhaust pipe of the utility model preferred embodiment comprises a perforated tube 10 and an outer tube 20.

The pipe shaft of perforated tube 10 is divided into forward and backward two

section

11,12, leading portion 11 calibers are thicker, back segment 12 calibers are thinner, all be provided with a plurality of perforations 16 along anchor ring, the tail end of leading portion 11 forms an expansion section 13, this expansion section 13 can be connected with automobile tail pipe 30 (Fig. 4), and outside, front and

rear sections

11,12 two ends sets firmly a discoid inlet,

outlet orifice ring

14,15 respectively, all is provided with a plurality of perforation 141,151 on this inlet,

outlet orifice ring

14,15.

Outer tube 20 is hollow cylindrical, and front end is the enlarging shape, and inwardly bring together the rear end, when automobile running, a large amount of ambient airs are entered in the pipe smoothly, and cooperate the caliber reducing of rear end, air is mixed apace with waste gas, and this shape helps air, waste gas to mix and quickens scavenging action.Outer tube 20 is set in the outside of perforated tube 10, and the welding of the periphery of inner ring surface and this inlet,

outlet orifice ring

14,15 is affixed, each is provided with at least one

annular distance structure

21,22 along anchor ring outer tube 20 front and back ends, helps ambient air to enter, discharge, to reduce the effect of waste gas.

As Fig. 2,3, shown in 4, the expansion section 13 of the perforated tube 10 of this outlet pipe protrudes in the outside of outer tube 20, for being connected with automobile tail pipe 30, and before utilizing outer tube 20, back two ends with advance, the orifice ring 14 of giving vent to anger, the effect of 15 solid weldings, add the set annular distance structure 21 in outer tube 20 two ends, 22, when car engine turns round, waste gas is by this perforated tube 10, ambient air utilizes the perforation 141 of the air inlet orifice ring 14 of outer tube 20 front ends to enter the inside of outer tube 10, just be positioned at the extra heavy pipe part of these perforated tube 10 leading portions 11, air can attract waste gas and fully mix, air and waste gas pass through the tubule part of perforated tube 10 back segments 12 again, air mixes in bigger space with waste gas, produce sound deadening, be discharged to the outside by the give vent to anger perforation 151 of orifice ring 15 and the annular distance structure 22 of outer tube 20 rear ends of back segment 12 then, and remaining waste gas quicken outside the discharge tube also in the perforated tube 10.Help ambient air to enter and discharge as for two

annular distance structures

21,22 of outer tube 20 front and back ends.

In sum, automobile exhaust pipe of the present utility model utilizes the inlet,

outlet orifice ring

14,15 and outer tube 20 welding of perforated tube 10, make ambient air enter outer tube 20 inside, fully mix with the waste gas in the perforated tube 10, and utilize the caliber of outer tube 20 ends to dwindle, make the waste gas that watered down post outside the discharge tube, reach the function that scavenges, reduces engine temperature, quickens exhaust.

Claims

1, a kind of automobile exhaust pipe comprises a perforated tube and an outer tube that is socketed in the perforated tube outside, and this perforated tube front end has an expansion section that is connected with the automobile tail pipe, it is characterized in that:

Described perforated tube is divided into forward and backward two sections, and front and rear sections has an inlet, outlet orifice ring affixed with described outer tube two ends respectively, the leading portion caliber of described perforated tube is bigger, the back segment caliber is less, described inlet, outlet orifice ring is provided with a plurality of perforation, and described porous pipe ring side face is provided with most perforations;

Described outer tube two ends respectively are provided with at least one annular distance structure along anchor ring.