CN2869338Y - Exhaust silencer for motorcycle - Google Patents

Abstract

The utility model relates to a motorbike exhausting noise canceling device, comprising a noise canceling part provided with an outer cylinder and an inner tube and a vent-pipe connected with the noise canceling part, wherein contact agent is provided in the vent-pipe and the inner tube; a flange is fixed at the vent-pipe end connected with the noise canceling part; and flanges are welded on the outer cylinder and the inner pipe of the noise canceling part connected with the vent-pipe; the noise canceling part is connected with the vent-pipe through two flanges with bolts; a flange is provided at the connection of the vent-pipe, in which contact agent is provided, and the engine outlet and also a retaining ring is provided. The exhaust noise canceling device can purify the engine exhaust more effectively so as to increase the exhaust quality emitted from the motorbike engine and make the replacement and disassembling of the contact agent easier and more reliable.

Description

The exhaust silencer of motorcycle

Technical field

The utility model relates to a kind of exhaust silencer of motorcycle.

Technical background

Exhaust muffler for motorcycle is the device that is used to handle the motorcycle engine toxic emission, to reduce noise and the toxic emission pollution on the environment that motor produces.Exhaust silencer is formed by connecting by outlet pipe and silencing apparatus, and in outlet pipe or silencing apparatus catalyst is installed.Catalyst is that the centre is cellular cylindrical body, is used for the purifying engine exhaust gas discharged, and it just can play good waste-gas cleaning effect in the time of must reaching uniform temperature at the waste gas of engine emission, and its catharsis reduces on the contrary when exhaust gas temperature is too high.

The catalyst of installing in the existing exhaust muffler for motorcycle or be installed in the outlet pipe, or be installed in the interior pipe of silencing apparatus.Be installed in the exhaust silencer in the pipe in the silencing apparatus for catalyst, because catalyst is far away apart from engine exhaust port, start working the stage at motor, the temperature of silencing apparatus position, catalyst place waste gas can not be increased to rapidly catalyst can proper functioning temperature, make catalyst carry out effective purified treatment, thereby make this exhaust silencer relatively poor in the start working exhaust emission quality in stage of motor to the waste gas that motor is discharged.Be installed in exhaust silencer in the outlet pipe for catalyst, because catalyst is nearer apart from engine exhaust port, start working the stage at motor, the temperature of outlet pipe position, catalyst place waste gas is higher, so can make catalyst get started the effect of purifying exhaust air, and not have the expense gas discharging of a time period without effective purified treatment.But, along with the work of motor long period, outlet pipe position, catalyst place exhaust gas temperature is too high, will cause the waste-gas cleaning ability of catalyst to reduce, the waste gas that motor is discharged can not get effective purified treatment, so the exhaust emission quality of this exhaust silencer is also relatively poor.

In the motorcycle using process, because working life that is far longer than catalyst working life of exhaust silencer, so often when exhaust silencer still can normally use, catalyst has been scrapped and can not normally have been used.Because existing exhaust silencer catalyst installed position tube and tube (outlet pipe and outlet pipe, or outlet pipe and silencing apparatus) between be to be connected as a single entity by welding, so the catalyst scrapped can not take out in the exhaust silencer and change, like this, owing to causing whole exhaust silencer, scrapping of catalyst scrap, and this moment, silencing apparatus did not also reach working life far away, so the structure of existing exhaust silencer has caused the significant wastage of resource.

The model utility content

Technical problem to be solved in the utility model provides a kind of exhaust silencer of motorcycle, makes the engine exhaust through its discharge can access more efficiently purified treatment, to promote the exhaust emission quality of motorcycle engine; Make retracting of catalyst in it change simple and convenient and install reliable simultaneously.

The exhaust silencer of motorcycle described in the utility model comprises the silencing apparatus with urceolus and interior pipe, and the outlet pipe that is connected with silencing apparatus, and catalyst is installed in exhaust silencer, and described catalyst is installed in respectively in the interior interior pipe with silencing apparatus of outlet pipe; Outlet pipe is being provided with flange plate with the silencing apparatus connecting end, silencing apparatus with the urceolus of outlet pipe connecting end and interior pipe on be welded with flange plate, silencing apparatus and outlet pipe are connected as a single entity with bolt by two flange plate; Outlet pipe and engine exhaust port connecting end are set with flange plate, and are provided with back-up ring, and back-up ring can stop that this flange plate breaks away from outlet pipe from this port of outlet pipe, and the described catalyst that is installed in the outlet pipe is positioned at this port.

Pipe has size two footpath sections in described, and described catalyst is positioned at the big footpath section of pipe, and between the seal ring between size section jointing place, two footpaths and two flange plate, thereby realize that catalyst installation in the pipe in silencing apparatus is spacing.

The endoporus that is weldingly fixed on the flange plate on silencing apparatus urceolus and the interior pipe is a step hole, be arranged on the outlet pipe, the flange plate at outlet pipe and silencing apparatus connecting end place is sleeved on this port of outlet pipe, and this port is welded with protruding figure, this protruding circle is arranged in described flange plate inner bore of step and its Spielpassung, and can stop that flange plate breaks away from outlet pipe from this port of outlet pipe.

Be provided with step in outlet pipe and the engine exhaust port connecting end, be installed in catalyst one end and the conflict of this step in this port, when outlet pipe with after engine exhaust port is connected, can realize that the installation of catalyst in outlet pipe is spacing.

The utility model in outlet pipe and the interior Guan Zhongjun of silencing apparatus catalyst is installed, start working the stage at motor, because the catalyst that is installed in the outlet pipe is nearer apart from engine exhaust port, the waste gas that motor is discharged is higher in the temperature at this catalyst place, thereby makes this catalyst can carry out effective purified treatment to waste gas at the engine start initial stage; And in engine operation after a period of time, when catalyst place exhaust gas temperature in the outlet pipe too high and when causing this catalyst that the waste-gas cleaning Processing capacity is reduced, the temperature that is installed in catalyst place waste gas in the interior pipe of silencing apparatus raises, and the catalyst in the pipe can carry out effective purified treatment to waste gas in the silencing apparatus thereby make.So the utility model exhaust silencer begins to start in the entire work process that finishes to operation at motor, all can carry out effective purified treatment, thereby make the exhaust emission quality of motorcycle engine be able to further lifting with this kind exhaust silencer to the waste gas that motor is discharged.

For small-displacement engine of motorcycle, because the big displacement motorcycle engine exhaust gas discharged temperature of its exhaust gas discharged temperature is low, so the mounting point of catalyst should be near apart from engine exhaust port as far as possible in the outlet pipe, so just can make the catalyst in the outlet pipe can play effective waste-gas cleaning effect at the engine start initial stage, so catalyst is installed in outlet pipe and place, engine exhaust port connecting port, is more suitable for the motorcycle engine in little discharge capacity.

Because the connecting end at outlet pipe and silencing apparatus is provided with flange plate, outlet pipe and silencing apparatus is connected as one with bolt by flange plate, makes outlet pipe and silencing apparatus be easy to dismounting, thereby be convenient to the dismounting and change of catalyst in the silencing apparatus; Equally, catalyst is installed in outlet pipe and engine exhaust port connecting end, also is convenient to the dismounting and change of catalyst in the outlet pipe.When catalyst is scrapped, only need to change catalyst, exhaust silencer still can continue to use, so can not cause the waste of resource.

Cooperating between protruding circle and the endoporus located in outlet pipe and silencing apparatus connecting port, and outlet pipe and silencing apparatus can conveniently be located, and is beneficial to the connection of outlet pipe and silencing apparatus, increased by reliability and intensity that two flange plate connect simultaneously.Catalyst is in the port of outlet pipe and engine exhaust port connecting end, and the one end is spacing with the step in the outlet pipe port, with after motor is connected, promptly can realize the reliable installation of catalyst in outlet pipe at outlet pipe; And the catalyst in the silencing apparatus in the pipe can be realized the reliable installation of catalyst in silencing apparatus equally between the seal ring between interior pipe size section jointing place, two footpaths and two flange plate.

Description of drawings

Now in conjunction with the accompanying drawings the utility model is described in further detail.

Fig. 1 looks schematic representation for the master of the exhaust silencer of motorcycle described in the utility model;

Fig. 2 is the partial enlarged drawing at M place among Fig. 1;

Fig. 3 is the partial enlarged drawing at N place among Fig. 1.

Embodiment

As Fig. 1, Fig. 2 and shown in Figure 3, the exhaust silencer of this motorcycle comprises the silencing apparatus with urceolus 1 and interior pipe 2, and the outlet pipe 7 that is connected with silencing apparatus, silencing apparatus with the urceolus 1 of outlet pipe 7 connecting ends and interior pipe 2 on be welded with flange plate 5, the endoporus of this flange plate 5 is a step hole; Outlet pipe 7 is being set with flange plate 6 with the silencing apparatus connecting end, and outlet pipe 7 is welded with protruding circle 8 at this port, this protruding circle 8 is arranged in the inner bore of step and its Spielpassung that is weldingly fixed on the flange plate 5 on silencing apparatus urceolus 1 and the pipe 2, protruding circle 8 can stop that flange plate 6 breaks away from outlet pipe 7 from outlet pipe 7 these ports, be provided with seal ring 9 between the step end face of protruding circle 8 end faces and this inner bore of step, silencing apparatus and outlet pipe 7 are connected as a single entity by two flange plate, 5,6 usefulness bolts 4.

Pipe 2 has size two footpath sections in the silencing apparatus, in the section of the big footpath of interior pipe 2, catalyst 3 is installed, its between the seal ring 9 of size two footpath section jointing places and 5,6 of two flange plate, with limit its along interior tubular axis to moving, thereby the installation that realization catalyst 3 is managed in 2 in silencing apparatus is spacing.

Outlet pipe 7 is set with flange plate 13 with the engine exhaust port connecting end, and is provided with the back-up ring 12 that combines as a whole with outlet pipe 7, and back-up ring 12 can stop that this flange plate 13 breaks away from outlet pipe 7 from outlet pipe 7 these ports.Outlet pipe 7 is provided with step 11 in this port, catalyst 10 is installed in one end and 11 conflicts of this step in this port, with after motor is connected, this catalyst 10 promptly is limited between this step 11 and the engine exhaust port at outlet pipe 7, thereby realizes the reliable installation of catalyst 10.

The also available baffle ring that is welded in outlet pipe 7 ports of the step 11 that is provided with in outlet pipe 7 ports replaces.

Claims (4)

1, a kind of exhaust silencer of motorcycle, the silencing apparatus that comprises have urceolus (1) and interior pipe (2), and the outlet pipe (7) that is connected with silencing apparatus, catalyst (3,10) is installed in exhaust silencer, it is characterized in that: described catalyst is installed in respectively in the interior interior pipe with silencing apparatus of outlet pipe; Outlet pipe is being provided with flange plate (6) with the silencing apparatus connecting end, silencing apparatus with the urceolus (1) of outlet pipe (7) connecting end and interior pipe (2) on be welded with flange plate (5), silencing apparatus and outlet pipe are connected as a single entity with bolt (4) by two flange plate (5,6); Outlet pipe and engine exhaust port connecting end are set with flange plate (13), and are provided with back-up ring (12), and back-up ring can stop that this flange plate breaks away from outlet pipe from this port of outlet pipe, and the described catalyst (10) that is installed in the outlet pipe is positioned at this port.

2, the exhaust silencer of motorcycle according to claim 1, it is characterized in that: pipe (2) has size two footpath sections in described, described catalyst (3) is positioned at the big footpath section of pipe, and is positioned between the seal ring (9) between size two footpath section jointing places and two flange plate (5,6).

3, the exhaust silencer of motorcycle according to claim 1, it is characterized in that: the endoporus that is weldingly fixed on the flange plate (5) on silencing apparatus urceolus (1) and the interior pipe (2) is a step hole, be arranged on that outlet pipe (7) is gone up, the flange plate (6) at outlet pipe and silencing apparatus connecting end place is sleeved on this port of outlet pipe, and this port is welded with protruding circle (8), this protruding circle is arranged in described flange plate (5) inner bore of step and its Spielpassung, and can stop that flange plate (6) breaks away from outlet pipe from this port of outlet pipe.

4, according to the exhaust silencer of claim 1 or 2 or 3 described motorcycles, it is characterized in that: be provided with step (11) in outlet pipe (7) and the engine exhaust port connecting end, catalyst (10) one ends and this step that are installed in this port are conflicted.