CN103016102A - Silencer for exhaust system of gasoline engine - Google Patents
Silencer for exhaust system of gasoline engine Download PDFInfo
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- CN103016102A CN103016102A CN2012105503578A CN201210550357A CN103016102A CN 103016102 A CN103016102 A CN 103016102A CN 2012105503578 A CN2012105503578 A CN 2012105503578A CN 201210550357 A CN201210550357 A CN 201210550357A CN 103016102 A CN103016102 A CN 103016102A
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Abstract
The invention provides a silencer for an exhaust system of a gasoline engine. A silencing assembly of the silencer comprises a one-hole tray, a two-hole tray, a three-hole tray, a connecting pipe, a first-stage porous pipe, a first-stage silencing pipe, a second-stage silencing pipe and a guide pipe, wherein the one-hole tray, the two-hole tray and the three-hole tray divide a silencer cylinder into a first cavity, a second cavity and a third cavity; the first-stage silencing pipe is arranged in the two-hole tray in a penetration manner, one end of the first-stage silencing pipe is opened and is arranged in the first cavity to be opposite to an exhaust end of the first-stage porous pipe, and the other end of the first-stage silencing pipe is arranged in the second cavity and is provided with a blanking cap II to form a blind end; the second-stage silencing pipe is arranged on the two-hole tray and the three-hole tray in a penetration manner to communicate the first cavity and the second cavity; and the guide pipe and a tail pipe are both arranged on the three-hole tray, one ends of the guide pipe and the tail pipe are opened and are both arranged in the second cavity, the other end of the guide pipe is arranged in the third cavity, and the other end of the tail pipe is an exhaust end which is arranged outside the silencer cylinder. The silencer disclosed by the invention can be used for depleting kinetic energy and damping vibration of airflow stage by stage so as to effectively reduce the noise during exhaust.
Description
Technical field
The present invention relates to a kind of mechanical silencer, more particularly, relate to a kind of silencing apparatus for the petrol engine vent systems.
Background technique
In petrolic waste air process, the pressure of waste gas will produce continuous pulsing airflow at the exhaust pipe mouth place, this pulse gas high-speed punching exhaust mouth, and its pressure and speed and ambient air differ greatly, and will produce ear-piercing tail gas noise.Therefore, Motor Vehicle generally all need to fix a silencer at engine exhaust pipe, and silencing apparatus is used for consuming flowed energy, reduces the pressure of air-flow, can play the effect that reduces noise.
According to principle of interference, silencing apparatus has absorption, two kinds of basic noise elimination modes of reflection, and absorption silencer is to make mechanical energy be converted into thermal energy consumption by the friction of waste gas on the sound absorbing materials such as glass fibre, Steel Fibre and asbestos to fall; Reflection muffler then has the harmony chamber of a plurality of series connection and the porous reflection tube of different length to interconnect, and waste gas reduces its pressure through repeatedly reflection, collision, expansion, cooling therein, alleviates vibration and energy.
Reactive muffler of the prior art belongs to reflection muffler, and the air-flow of its kinetic energy directly impacts on the dividing plate of silencing apparatus inside, perhaps directly impacts on the blanking cover of perforated tube.Although this silencing apparatus has certain noise elimination effect, because the waste gas path of travel of its formation of silencing apparatus of this structure is not too reasonable, cause noise elimination insufficient, and can not effectively reduce the kinetic energy of air-flow, so that soundproof effect is not obvious; And air-flow directly impacts metal so that the metal vibration is large, and the noise that causes the metal vibration to cause is also larger.Simultaneously, this acoustic wave filter structure more complicated, it is larger to reach the used muffler volume of same soundproof effect, and cost is higher.Along with the raising of Motor Vehicle rotating speed, existing silencing apparatus can not improve the petrol engine operation effectively to the noise pollution that environment causes, and need to constantly improve.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough, a kind of silencing apparatus for the petrol engine vent systems simple in structure is provided, this silencing apparatus can be eliminated the continuous impulse pneumatic noise in the engine exhaust process to a great extent, thereby the air-flow that the silencing apparatus tail end is discharged is soft steadily, reduce to a great extent exhaust noise, reduce because the noise pollution that petrolic operation causes.
In order to achieve the above object, the present invention is achieved by following technical proposals: a kind of silencing apparatus for the petrol engine vent systems comprises front exhaust pipe, the silencer cylinder that connects successively and is arranged at silencer cylinder interior catalytic converter, sound attenuation assembly, tail pipe and tail-hood; It is characterized in that: described sound attenuation assembly comprises a hole dish, two hole dish, three hole dish, connecting tube, one-level perforated tube, one-level hush tube, secondary hush tube and honeycomb duct, wherein a hole dish, two hole dish and three hole dish the first cavity, the second cavity and the 3rd cavity that silencer cylinder is divided into successively; Described connecting tube interts on a hole dish, an end that is positioned at a hole dish one side links to each other with catalytic converter prime tail end, an end that is positioned at a hole dish opposite side is arranged on the first cavity and is communicated with the inlet end of one-level perforated tube, and the exhaust end of one-level perforated tube is positioned at the first cavity; Described one-level hush tube interts on two hole dish, and one end opening and opening end are arranged in the first cavity relative with the exhaust end of one-level perforated tube, and the other end is arranged in the second cavity and is provided with the blanking cover dimorphism and becomes cecum; Described secondary hush tube interts on two hole dish and three hole dish, is communicated with the first cavity and the 3rd cavity; Described honeycomb duct and tail pipe all intert on three hole dish, one end opening and all being arranged in the second cavity, and the other end of honeycomb duct is arranged in the 3rd cavity, and the other end of tail pipe is that exhaust end is located at outside the silencer cylinder.
By such scheme, the air-flow of discharging from the one-level perforated tube can directly mutually liquidate the one-level hush tube and cancel out each other, and can consume kinetic energy and the vibration of air-flow, reaches the effect that reduces exhaust sound.Wherein, the inner Matching installation of a hole dish, two hole dish and three hole dish and silencer cylinder.
In order to realize better the present invention, the exhaust end port of described one-level perforated tube narrows gradually along the Way out of air-flow.The flow direction of air-flow can be suitably regulated in this design, makes from the air-flow concentrated area that the one-level perforated tube is discharged to flow to the one-level hush tube.
The tube wall of described one-level perforated tube is provided with several the second sound attenuation holes.The second sound attenuation hole can play the low noise effect of falling.
The port that described one-level hush tube is arranged in the first cavity is horn opening; The total length of described one-level hush tube is greater than half of its minimum pipe.The design of horn opening can receive the air-flow of discharging from one-level perforated tube exhaust end on a large scale.And the length of one-level hush tube is to determine that according to the amplitude that liquidates of motor discharge tail gas impulse oscillation this design can reach good noise reduction, and particularly for when high engine speeds turns round, noise reduction is especially obvious.
Described one-level hush tube interts the first mesopore that refers to be provided with in the two hole dish opening indent at two hole dish, and the one-level hush tube interts on two hole dish by the first mesopore; Be provided with the position, the first hole of opening evagination above or below described the first mesopore, the secondary hush tube interts on two hole dish by position, the first hole.The one-level hush tube can intert on two hole dish more securely by being provided with the first mesopore of opening indent, and therefore the aperture of the first mesopore and the caliber of one-level hush tube are complementary.The present invention is provided with recess in order to solve the problem of leaking in dish bottom, two holes.
Be provided with the second mesopore in the described three hole dish, the above and below of the second mesopore respectively is provided with position, hole and position, lower hole; The opening evagination of described the second mesopore, position, upper hole and position, lower hole.Tail pipe is to intert on three hole dish by the second mesopore, and honeycomb duct then interts on three hole dish by position, upper hole or lower position, hole; And the secondary hush tube interts on two hole dish and three hole dish by the position, the first hole of two hole dish and position, upper hole or the lower position, hole of three hole dish.The aperture in above-mentioned hole all is complementary with the caliber of the pipe that is interted, and the opening evagination in hole can make the pipe that is interted more firm.Simultaneously, in order to solve the problem of leaking, be provided with recess in dish bottom, three holes.
The tube wall that is located at the 3rd cavity at described secondary hush tube offers the first sound attenuation hole.
Described the first sound attenuation hole refers to the through hole that distributes at the pipe circumferencial direction or refers to that the secondary hush tube is facing to the perforate on the sidewall of tail pipe.
Described secondary hush tube one end opening and being arranged in the first cavity, the other end are arranged in the 3rd cavity and are provided with blanking cover one and form cecum.
The first sound attenuation hole is set and adds blanking cover one at the one end at the secondary hush tube, then sound attenuation assembly of the present invention is to form constituting of three cavitys by the two-stage noise elimination structure, this structure is so that enter the air-flow of silencing apparatus and cancel out each other in the two-stage hush tube and mutually liquidate, and the kinetic energy and the caused vibration thereof that consume step by step air-flow, so that the entrained noise ability of tail gas progressively weakens, finally reach the outer effect of the soft discharge silencing apparatus of air-flow, reduce to a great extent exhaust noise.The design of the first sound attenuation hole can make the gas after cancelling out each other in the secondary hush tube be discharged to the 3rd cavity, and the first sound attenuation hole to the tail pipe sidewall also has an effect: the pipe face of the gas shock tail pipe of discharge, can disperse, buffering and softening air-flow, thereby reduce the noisemetallic that bump is pounded out.
The silencing apparatus that the present invention is used for the petrol engine vent systems is like this work:
(1) engine air flow enters the one-level perforated tube from the catalytic converter tail end by connecting tube, and the major part of the engine air flow main flow that flows out from one-level perforated tube exhaust end enters the one-level hush tube relative with one-level perforated tube exhaust end and carries out one-level consumption.The main flow pulsing airflow will at first clash into tube wall and the blanking cover two of one-level hush tube, consumed a part of kinetic energy, at this moment, pulsing airflow to the airintake direction bounce-back constantly liquidates mutually with another part pulsing airflow that rushes at one-level hush tube cecum, and in the one-level hush tube, form relative highpressure, in the mutual impact process of air-flow, can reach soundproof effect.
(2) air-flow that has consumed a part of kinetic energy will enter the secondary hush tube, pulsing airflow clashes into first again tube wall and the blanking cover one of secondary hush tube, again consume a part of kinetic energy, at this moment, pulsing airflow to the airintake direction bounce-back constantly liquidates mutually with another part pulsing airflow that rushes at secondary hush tube cecum, and forming again relative highpressure at secondary hush tube rear, the kinetic energy of pulsing airflow and vibration thereof will consume again a part herein.
(3) through after repeatedly consuming, eliminated largely kinetic energy and the vibration of pulsing airflow, made the air-flow in the silencing apparatus keep soft steady.Air-flow flows into the 3rd cavity by the first sound attenuation hole, flows to the second cavity by honeycomb duct again, steadily leniently discharges external environment by tail pipe at last, has reduced largely exhaust noise.In the whole process, air-flow is circuitous flowing in the first cavity, the second cavity and the 3rd cavity of silencing apparatus, air-flow liquidates in hush tubes at different levels mutually, and form relative highpressure at cecum, effectively consume the kinetic energy of air-flow, the metal that mutually liquidating between the air-flow causes vibrates also less, and the metallic sound of generation is less also, effectively reduces exhaust sound.
Compared with prior art, the present invention has following advantage and beneficial effect:
1, silencing apparatus of the present invention is simple in structure, form a plurality of cavitys by noise elimination structures at different levels, this structure is so that enter the air-flow of silencing apparatus and cancel out each other and mutually liquidate, and consume step by step the kinetic energy of air-flow, so that the tail gas noise progressively weakens, finally reach the outer effect of the soft discharge silencing apparatus of air-flow, reduce to a great extent exhaust noise.
2, air-flow of the present invention liquidates in hush tubes at different levels mutually, and form relative highpressure at cecum, and effectively consuming the kinetic energy of air-flow, the metal that mutually liquidating between the air-flow causes vibrates also less, the metallic sound that produces is less also, effectively reduces exhaust sound.
3, the design of a plurality of cavitys of the present invention can prolong gas circuit, has increased the waiting time of air-flow in silencing apparatus, thereby has reduced pressure and the speed of air-flow, also plays the effect that reduces exhaust sound.
4, the one-level perforated tube tail end of silencing apparatus of the present invention is the exhaust end of opening, without blanking cover, can make exhaust unimpeded, thereby make the power loss of motor little, reaches to promote engine power and energy-conservation effect.
Description of drawings
Fig. 1 is the structural representation that the present invention is used for the silencing apparatus embodiment one of petrol engine vent systems;
Fig. 2 is the front schematic view of two hole dish among Fig. 1;
Fig. 3 is the side schematic view of two hole dish among Fig. 1;
Fig. 4 is the front schematic view of three hole dish;
Fig. 5 is the side schematic view of three hole dish;
Fig. 6 is the structural representation that the present invention is used for the silencing apparatus embodiment two of petrol engine vent systems;
Fig. 7 is the front schematic view of two hole dish among Fig. 6;
Fig. 8 is the side schematic view of two hole dish among Fig. 6;
Wherein, 1 is that front exhaust pipe, 2 is that silencer cylinder, 3 is that catalytic converter, 4 is that tail pipe, 5 is that tail-hood, 6 is that the first cavity, 7 is that the second cavity, 8 is that the 3rd cavity, 9 is that a hole dish, 10 is that two hole dish, 11 are that three hole dish, 12 are that connecting tube, 13 is that one-level perforated tube, 14 is that one-level hush tube, 15 is that secondary hush tube, 16 is that honeycomb duct, 17 is that the first mesopore, 18 is that position, the first hole, 19 is that the second mesopore, 20 is that position, upper hole, 21 is that blanking cover two, 22 is that blanking cover one, 23 is that the second sound attenuation hole, 24 is that the first sound attenuation hole, 25 is position, lower hole.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
Embodiment one
The present invention be used for the petrol engine vent systems silencing apparatus embodiment one structural representation as shown in Figure 1, this silencing apparatus comprises front exhaust pipe 1, the silencer cylinder 2 that connects successively and is arranged at catalytic converter 3, sound attenuation assembly, tail pipe 4 and tail-hood 5 in the silencer cylinder 2; Wherein, sound attenuation assembly comprises a hole dish 9, two hole dish 10 and the three hole dish 11 of the first cavity 6, the second cavity 7 and the 3rd cavity 8 that silencer cylinder 2 is divided into successively, connecting tube 12, tube wall is provided with the one-level perforated tube 13 of several the second sound attenuation holes 23, one-level hush tube 14, secondary hush tube 15 and honeycomb duct 16.Connecting tube 12 interts on a hole dish 9, an end that is positioned at a hole dish 9 one sides links to each other with catalytic converter 3 tail ends, an end that is positioned at a hole dish 9 opposite sides is arranged on the first cavity 6 and is communicated with the inlet end of one-level perforated tube 13, the exhaust end of one-level perforated tube 13 is positioned at the first cavity 6, and its exhaust end port narrows gradually along the Way out of air-flow.Wherein, a hole dish 9, two hole dish 10 and three hole dish 11 and silencer cylinder 2 inner Matching installations.
Among Fig. 1 the front schematic view of two hole dish and side schematic view as shown in Figures 2 and 3, the bottom that is provided with the first mesopore 17, the first mesopores 17 of opening indent in the two hole dish is provided with the position, the first hole 18 of opening evagination; In order to solve the problem of leaking, be provided with recess in the bottom of two hole dish.As shown in Figure 1, the caliber of the aperture of the first mesopore and one-level hush tube 14 is complementary, one-level hush tube 14 is by being provided with the first mesopore of opening indent, intert securely on two hole dish 10, one end opening and opening end are arranged in the first cavity 6 relative with the exhaust end of one-level perforated tube 13, in order to receive the air-flow of discharging from one-level perforated tube 13 exhaust ends on a large scale, the port design of this end is horn opening, the other end of one-level hush tube 14 then is arranged in the second cavity 7 and is provided with blanking cover 2 21 and forms cecums, and the total length of one-level hush tube 14 is greater than half of its minimum pipe.
The front schematic view of three hole dish and side schematic view as shown in Figure 4 and Figure 5, the above and below that is provided with the second mesopore 19, the second mesopores 19 in the three hole dish respectively is provided with position, hole 20 and position, lower hole 25; The opening evagination of the second mesopore 19, position, upper hole 20 and position, lower hole 25; In order to solve the problem of leaking, be provided with recess in the bottom of three hole dish.As shown in Figure 1, tail pipe 4 is to intert on three hole dish 11 by the second mesopore 19, one end opening and being arranged in the second cavity 7, and exhaust end then is located at outside the silencer cylinder 2.And secondary hush tube 15 interts on two hole dish 10 and three hole dish 11 by the position, the first hole 18 of two hole dish 10 and the position, lower hole 25 of three hole dish 11, one end opening and being arranged in the first cavity 6, the other end are arranged in the 3rd cavity 8 and are provided with blanking cover 1 and form cecums.16 of honeycomb ducts intert on three hole dish 11 by position, upper hole 20, an end opening and being arranged in the second cavity 7, and the other end is arranged in the 3rd cavity 8.The aperture in above-mentioned hole all is complementary with the caliber of the pipe that is interted, and the equal evagination of the opening in hole can make the pipe that is interted more firm.
As shown in Figure 1, the tube wall that is located at the 3rd cavity 8 at secondary hush tube 15 offers the first sound attenuation hole 24, and this first sound attenuation hole 24 is a plurality of through holes that distribute at the pipe circumferencial direction.Gas was discharged to the 3rd cavity 8 after this design can make and cancel out each other in secondary hush tube 15.
The silencing apparatus that the present invention is used for the petrol engine vent systems is like this work:
(1) engine air flow enters one-level perforated tube 13 from catalytic converter 3 tail ends by connecting tube 12, and the major part of the engine air flow main flow that flows out from one-level perforated tube 13 exhaust ends enters the one-level hush tube 14 relative with one-level perforated tube 13 exhaust ends and carries out one-level consumption.The main flow pulsing airflow will at first clash into tube wall and the blanking cover 2 21 of one-level hush tube 14, consumed a part of kinetic energy, at this moment, pulsing airflow to the airintake direction bounce-back constantly liquidates mutually with another part pulsing airflow that rushes at one-level hush tube 14 cecums, and at the relative highpressure of one-level hush tube 14 interior formation, in the mutual impact process of air-flow, can reach soundproof effect.
(2) air-flow that has consumed a part of kinetic energy will enter secondary hush tube 15, pulsing airflow clashes into first again tube wall and the blanking cover 1 of secondary hush tube 15, again consume a part of kinetic energy, at this moment, pulsing airflow to the airintake direction bounce-back constantly liquidates mutually with another part pulsing airflow that rushes at secondary hush tube 15 cecums, and forming again relative highpressure at secondary hush tube 15 rears, the kinetic energy of pulsing airflow and vibration thereof will consume again a part herein.
(3) through after repeatedly consuming, eliminated largely kinetic energy and the vibration of pulsing airflow, made the air-flow in the silencing apparatus keep soft steady.Air-flow flows into the 3rd cavity 8 by the first sound attenuation hole 24, flows to the second cavity 7 by honeycomb duct 16 again, steadily leniently discharges external environment by tail pipe 4 at last, has reduced largely exhaust noise.In the whole process, air-flow is the first cavity 6 of silencing apparatus, the second cavity 7 and the 3rd cavity 8 interior circuitous flowing, and by the consumption kinetic energy that mutually liquidates in hush tube, thereby reduced pressure and the speed of air-flow, also plays the effect that reduces exhaust sound.By air-flow in hush tube mutually to bringing kinetic energy and the flow velocity that consumes air-flow, effectively reduced the impact of air-flow to metal, and the noise that causes therefrom.
Embodiment two
Present embodiment and embodiment's one difference are:
(1) the present invention be used for the petrol engine vent systems silencing apparatus embodiment two structural representation as shown in Figure 6, the tube wall that is located at the 3rd cavity 8 at secondary hush tube 15 offers the first sound attenuation hole 24, the first sound attenuation hole 24 in the present embodiment is perforates that face toward on the sidewall of tail pipe 4, gas was discharged to the 3rd cavity 8 after this first sound attenuation hole 24 not only can make and cancel out each other in secondary hush tube 15, and the pipe face of the gas shock tail pipe 4 of discharging, can disperse, buffering and softening air-flow, avoided pulsing airflow to impact simultaneously tail pipe pipe face, form and disperse in order to impact tail pipe pipe face, thereby reduce the noisemetallic that bump sends.
(2) among Fig. 6 the front schematic view of two hole dish and side schematic view as shown in Figure 7 and Figure 8, the position, the first hole 18 of opening evagination is arranged on the top of the first mesopore 17; As shown in Figure 6, secondary hush tube 15 interts on two hole dish 10 and three hole dish 11 by the position, the first hole, top 18 of two hole dish 10 and the position, upper hole 20 of three hole dish 11, one end opening and being arranged in the first cavity 6, the other end are arranged in the 3rd cavity 8 and are provided with blanking cover 1 and form cecums; Honeycomb duct 16 then interts on three hole dish 11 by position, lower hole 25, an end opening and being arranged in the second cavity 7, and the other end is arranged in the 3rd cavity 8.
Other structures of present embodiment silencing apparatus are identical with other structures of silencing apparatus among the embodiment one, and the working principle of silencing apparatus is also consistent with the working principle of silencing apparatus among the embodiment one.
Embodiment three
Present embodiment and embodiment's one difference are not offer on the secondary hush tube the first sound attenuation hole, this secondary hush tube interts on two hole dish and three hole dish, be communicated with the first cavity and the 3rd cavity, and an end that is arranged in the 3rd cavity does not arrange blanking cover one, and the two ends of secondary hush tube are opening end.Other structures of present embodiment silencing apparatus are identical with other structures of silencing apparatus among the embodiment one.
Silencing apparatus in the present embodiment is like this work: engine air flow enters the one-level perforated tube from the catalytic converter tail end by connecting tube, the air-flow of discharging from the one-level perforated tube enters the one-level hush tube and consumes, part pulsing airflow clashes into first tube wall and the blanking cover two of one-level hush tube, consumed a part of kinetic energy, at this moment, pulsing airflow to the airintake direction bounce-back constantly liquidates mutually with another part pulsing airflow that rushes at one-level hush tube cecum, and in the one-level hush tube, forming relative highpressure, pulsing airflow kinetic energy and vibration thereof will be offset a part herein.Air-flow flows into the 3rd cavity by the secondary hush tube, flows to the second cavity by honeycomb duct again, steadily leniently discharges external environment by tail pipe at last, reaches the effect that reduces exhaust sound.
Above-described embodiment is the better mode of execution of the present invention; but embodiments of the present invention are not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present invention and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (9)
1. a silencing apparatus that is used for the petrol engine vent systems comprises front exhaust pipe, the silencer cylinder that connects successively and is arranged at silencer cylinder interior catalytic converter, sound attenuation assembly, tail pipe and tail-hood; It is characterized in that: described sound attenuation assembly comprises a hole dish, two hole dish, three hole dish, connecting tube, one-level perforated tube, one-level hush tube, secondary hush tube and honeycomb duct, wherein a hole dish, two hole dish and three hole dish the first cavity, the second cavity and the 3rd cavity that silencer cylinder is divided into successively; Described connecting tube interts on a hole dish, an end that is positioned at a hole dish one side links to each other with catalytic converter prime tail end, an end that is positioned at a hole dish opposite side is arranged on the first cavity and is communicated with the inlet end of one-level perforated tube, and the exhaust end of one-level perforated tube is positioned at the first cavity; Described one-level hush tube interts on two hole dish, and one end opening and opening end are arranged in the first cavity relative with the exhaust end of one-level perforated tube, and the other end is arranged in the second cavity and is provided with the blanking cover dimorphism and becomes cecum; Described secondary hush tube interts on two hole dish and three hole dish, is communicated with the first cavity and the 3rd cavity; Described honeycomb duct and tail pipe all intert on three hole dish, one end opening and all being arranged in the second cavity, and the other end of honeycomb duct is arranged in the 3rd cavity, and the other end of tail pipe is that exhaust end is located at outside the silencer cylinder.
2. the silencing apparatus for the petrol engine vent systems according to claim 1, it is characterized in that: the exhaust end port of described one-level perforated tube narrows gradually along the Way out of air-flow.
3. the silencing apparatus for the petrol engine vent systems according to claim 2, it is characterized in that: the tube wall of described one-level perforated tube is provided with several the second sound attenuation holes.
4. the silencing apparatus for the petrol engine vent systems according to claim 3 is characterized in that: the port that described one-level hush tube is arranged in the first cavity is horn opening; The total length of described one-level hush tube is greater than half of its minimum pipe.
5. the silencing apparatus for the petrol engine vent systems according to claim 4, it is characterized in that: described one-level hush tube interts the first mesopore that refers to be provided with in the two hole dish opening indent at two hole dish, and the one-level hush tube interts on two hole dish by the first mesopore; Be provided with the position, the first hole of opening evagination above or below described the first mesopore, the secondary hush tube interts on two hole dish by position, the first hole.
6. the silencing apparatus for the petrol engine vent systems according to claim 5, it is characterized in that: be provided with the second mesopore in the described three hole dish, the above and below of the second mesopore respectively is provided with position, hole and position, lower hole; The opening evagination of described the second mesopore, position, upper hole and position, lower hole.
7. according to claim 1 to 6 each described silencing apparatuss for the petrol engine vent systems, it is characterized in that: the tube wall that is located at the 3rd cavity at described secondary hush tube offers the first sound attenuation hole.
8. the silencing apparatus for the petrol engine vent systems according to claim 7 is characterized in that: described the first sound attenuation hole refers to the through hole that distributes at the pipe circumferencial direction or refers to that the secondary hush tube is facing to the perforate on the sidewall of tail pipe.
9. the silencing apparatus for the petrol engine vent systems according to claim 8 is characterized in that: described secondary hush tube one end opening and being arranged in the first cavity, the other end is arranged in the 3rd cavity and is provided with blanking cover one and forms cecum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210550357.8A CN103016102B (en) | 2012-12-17 | 2012-12-17 | Silencer for exhaust system of gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210550357.8A CN103016102B (en) | 2012-12-17 | 2012-12-17 | Silencer for exhaust system of gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103016102A true CN103016102A (en) | 2013-04-03 |
| CN103016102B CN103016102B (en) | 2015-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210550357.8A Active CN103016102B (en) | 2012-12-17 | 2012-12-17 | Silencer for exhaust system of gasoline engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103016102B (en) |
Citations (7)
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| JPS59194023A (en) * | 1983-04-18 | 1984-11-02 | Suzuki Motor Co Ltd | Device of preventing after-burn of motorcycle |
| CN87204324U (en) * | 1987-06-13 | 1988-05-18 | 李雅城 | Energy-saving diversion muffler |
| CN101429885A (en) * | 2008-12-11 | 2009-05-13 | 洛阳北方易初摩托车有限公司 | Heating type exhausting silencer of motorcycle |
| CN201330635Y (en) * | 2008-10-31 | 2009-10-21 | 江门市中港宝田摩托车实业有限公司 | Motorcycle |
| CN101737121A (en) * | 2009-12-21 | 2010-06-16 | 重庆隆鑫机车有限公司 | Motorcycle sound eliminator |
| CN201599082U (en) * | 2009-11-27 | 2010-10-06 | 重庆科瑞实业有限责任公司 | Motorcycle exhaust air silencer |
| CN202954869U (en) * | 2012-12-17 | 2013-05-29 | 杨富周 | Muffle for exhaust system of gasoline engine |
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- 2012-12-17 CN CN201210550357.8A patent/CN103016102B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59194023A (en) * | 1983-04-18 | 1984-11-02 | Suzuki Motor Co Ltd | Device of preventing after-burn of motorcycle |
| CN87204324U (en) * | 1987-06-13 | 1988-05-18 | 李雅城 | Energy-saving diversion muffler |
| CN201330635Y (en) * | 2008-10-31 | 2009-10-21 | 江门市中港宝田摩托车实业有限公司 | Motorcycle |
| CN101429885A (en) * | 2008-12-11 | 2009-05-13 | 洛阳北方易初摩托车有限公司 | Heating type exhausting silencer of motorcycle |
| CN201599082U (en) * | 2009-11-27 | 2010-10-06 | 重庆科瑞实业有限责任公司 | Motorcycle exhaust air silencer |
| CN101737121A (en) * | 2009-12-21 | 2010-06-16 | 重庆隆鑫机车有限公司 | Motorcycle sound eliminator |
| CN202954869U (en) * | 2012-12-17 | 2013-05-29 | 杨富周 | Muffle for exhaust system of gasoline engine |
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| CN103016102B (en) | 2015-05-27 |
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