CN201330635Y

CN201330635Y - Motorcycle

Info

Publication number: CN201330635Y
Application number: CNU200820202709XU
Authority: CN
Inventors: 庾永曦
Original assignee: JIANGMEN SINO-HONGKONG BAOTIAN MOTORCYCLE INDUSTRIAL Co Ltd
Current assignee: JIANGMEN SINO-HONGKONG BAOTIAN MOTORCYCLE INDUSTRIAL Co Ltd
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-10-21
Anticipated expiration: 2018-10-31

Abstract

The utility model discloses a motorcycle, a muffler exhaust pipe thereof comprises an outer cylinder of a muffler, an inner pipe and a front exhaust pipe which is communicated with the inner pipe of the muffler, wherein the muffler is separated into three gas expansion chambers by a front baffle, a middle baffle and a rear baffle with via holes, the front baffle and the middle baffle are formed into a first expansion chamber, the middle baffle and the rear baffle are formed into a second expansion chamber, the rear baffle and a tail end cover of the muffler are formed into a third expansion chamber, and the inner pipe which is communicated with the front exhaust pipe runs through the via hole of the front baffle and is extended into the first expansion chamber. The exhaust pipe increases the power of an engine, reduces the fuel consumption rate, can meet various performance requirements of the matching engine, and leads the motorcycle to powerfully start, particularly is obviously powerful when driving in the middle or low speed. Because the suitability of the exhaust pipe and the engine of the motorcycle is increased, the whole performance of the motorcycle is increased.

Description

A kind of motorcycle

Technical field

The utility model relates to a kind of motorcycle, relates in particular to a kind of motorcycle with the noise pollution that alleviates motorcycle and exhaust emission pollution, raising engine output outlet pipe.

Background technique

Present motorcycle exhaust pipe is installed in the right side of corresponding motor cycle rear wheel, the outlet pipe of motorcycle is connected with the exhaust vent of motor, by outlet pipe waste gas is discharged, usually the noise during exhaust is bigger, generally need on outlet pipe, add silencing apparatus and reduce noise, the motorcycle noise elimination outlet pipe of prior art, as shown in Figure 1, the urceolus 11 that comprises silencing apparatus reaches interior pipe 21 and is connected the front exhaust pipe 31 that communicates with interior pipe of silencing apparatus, before silencing apparatus has, in, the three dividing plate branches that have through hole in back have three gas expansion chamber, preceding dividing plate 41 forms first expansion chamber 71 with central diaphragm 51, central diaphragm 51 forms second expansion chamber 81 with rear bulkhead 61, rear bulkhead 61 forms the 3rd expansion chamber 91 with the silencing apparatus tail end cover, second expansion chamber 81 communicates with the relief opening of silencing apparatus, in pipe 21 engage with preceding dividing plate 41 through holes, but interior pipe 21 does not stretch into first expansion chamber 71; Obviously, existing outlet pipe and exhaust mode can not improve engine power effectively and reduce fuel consumption rate does not have substantial raising, and the outlet pipe of prior art fails to solve effectively the bigger noise pollution that produces and the environmental problem of tail gas pollution.

The model utility content

The utility model is in order to overcome the deficiencies in the prior art, a kind of a kind of motorcycle that improves present product deficiency to be provided, and its noise pollution and tail gas pollution are little, good purification, and the motor overall performance is good.

The technological scheme that the utility model solves the prior art problem is, a kind of motorcycle, its noise elimination outlet pipe comprise the urceolus of silencing apparatus, interior pipe and with silencing apparatus in manage and be connected the front exhaust pipe that communicates, silencing apparatus by before, during and after three dividing plate branches that have through hole three gas expansion chamber are arranged, preceding dividing plate and central diaphragm form first expansion chamber, central diaphragm and rear bulkhead form second expansion chamber, rear bulkhead and silencing apparatus tail end cover form the 3rd expansion chamber, bulkhead through-hole and extending in first expansion chamber before wherein being connected the interior pipe that communicates with front exhaust pipe and running through.Instantaneous space in the time of so can enlarging exhaust and enter first expansion chamber as resonant cavity by inner spout, utilize the gas percussion recoil, alleviated the rapid cyclically-varying of the exhaust gas pressure of motor, reduce pressure surge, stablized the engine exhaust back pressure, engine power is improved, can also reduce exhaust sound and can improve the power of motor and reduce fuel consumption rate.

The utility model further is designed to: the length that interior pipe stretches in first expansion chamber is 80mm-170mm.

When inner tube diameter was 25mm-35mm, the first expansion chamber length that is formed by preceding dividing plate and central diaphragm was 150mm-200mm, and interior pipe stretches into 130mm-170mm in first expansion chamber; When inner tube diameter was 35mm, the first expansion chamber length was 150mm-200mm, and interior pipe stretches into 80mm-120mm in first expansion chamber.Length and the internal diameter of interior pipe, the length of expansion chamber that interior pipe stretches in first expansion chamber are mated mutually, the space that makes full use of expansion chamber is as resonant cavity, alleviated the rapid cyclically-varying of the exhaust gas pressure of motor, reduce pressure surge, stablized the engine exhaust back pressure, engine power is improved, can also reduce exhaust sound; Through overtesting power 5.18kw-7.31kw, the engine power of rotating speed 5573r/min-7052r/min improves about 3-5%, and fuel consumption rate reduces 2%, and exhaust sound reduces 3-5dB, and exhaust sound reduces 2-3dB; Make motorcycle under the identical situation of other condition, starting is strong; Obviously improve in the motorcycle, the low speed driving dynamics, cooperate motor to improve the overall performance of motorcycle preferably.

Description of drawings

Fig. 1 is the structural scheme of mechanism of the motorcycle noise elimination outlet pipe of prior art.

Fig. 2 is the utility model outlet pipe embodiment 1 a structural representation.

Fig. 3 is the utility model embodiment 2 a structural representation.

Embodiment

Embodiment 1

As shown in Figure 2, a kind of motorcycle, comprise that its noise elimination outlet pipe of motor (present embodiment adopts five sheep Honda 125cc motors) comprises the urceolus 12 of silencing apparatus, interior pipe 22 reaches and the interior pipe of silencing apparatus 22 front exhaust pipes that are connected 32, silencing apparatus is by preceding, in, the three dividing plate branches that have through hole in back have three gas expansion chamber, preceding dividing plate 42 forms first expansion chamber 72 with central diaphragm 52, central diaphragm 52 forms second expansion chamber 82 with rear bulkhead 62, rear bulkhead 62 forms the 3rd expansion chamber 92 with the silencing apparatus tail end cover, thereby an air pipe 23 passes the through hole of central diaphragm 52 and rear bulkhead 62 the first gas conducting of expanding between Room 72 and the 3rd expansion chamber 92, another air pipe 23 passes another through hole of rear bulkhead 62, thereby the gas of conducting the 3rd expansion chamber 92 and second expansion chamber 82, a connecting pipe 24 runs through central diaphragm 82 and rear bulkhead 92 communicates with the relief opening of silencing apparatus along the central axis of interior pipe 22, wherein be connected the interior pipe 22 that communicates runs through preceding dividing plate 42 through holes and stretches into 150mm in first expansion chamber 72 with front exhaust pipe 32, and is 175mm by preceding dividing plate 42 with first expansion chamber, 72 length that central diaphragm 52 forms, and the length of interior pipe is 320mm, internal diameter is 30mm.

Embodiment 2

As shown in Figure 3, a kind of motorcycle (present embodiment adopts five this 125cc of sheep motors), preceding dividing plate 42 in its outlet pipe silencing apparatus forms first expansion chamber 72 with central diaphragm 52, central diaphragm 52 forms second expansion chamber 82 with rear bulkhead 62, rear bulkhead 62 forms the 3rd expansion chamber 92 with the silencing apparatus tail end cover, one air pipe 25 passes the through hole of central diaphragm 52 the gas conducting between first expansion chamber 72 and second expansion chamber 82, another air pipe 25 passes rear bulkhead 62 the gas conducting between second expansion chamber 82 and the 3rd expansion chamber 92, a connecting pipe 26 runs through the silencing apparatus tail end cover along the central axis of interior pipe 22 and communicates with the 3rd expansion chamber, wherein be connected the interior pipe 22 that communicates runs through preceding dividing plate 42 and stretches into 100mm in first expansion chamber 72 with front exhaust pipe 32, interior pipe 22 length are 179mm, and interior pipe 22 internal diameters are 35mm.

The above only is the utility model preferred embodiment, is not structure of the present utility model is done any pro forma restriction; Every according to present technique essence to any simple modification, equivalent variations and modification that above embodiment did, all still belong in the scope of the technical solution of the utility model.

Claims

1. motorcycle, its noise elimination outlet pipe comprises the urceolus (11) of silencing apparatus, interior pipe (22) reaches with the interior pipe of silencing apparatus (22) and is connected the front exhaust pipe (32) that communicates, silencing apparatus is by preceding, in, three dividing plates that have through hole in back are divided into three gas expansion chamber, preceding dividing plate (42) forms first expansion chamber (72) with central diaphragm (52), central diaphragm (52) forms second expansion chamber (82) with rear bulkhead (62), rear bulkhead (62) and silencing apparatus tail end cover form the 3rd expansion chamber (92), it is characterized in that: be connected the interior pipe that communicates with front exhaust pipe (32) and run through preceding dividing plate (42) through hole and extend in first expansion chamber (72).

2. motorcycle according to claim 1 is characterized in that: it is 80mm-170mm that described interior pipe (22) stretches into first expansion (72) indoor length.

3, motorcycle according to claim 2 is characterized in that: pipe (22) internal diameter is 25mm-35mm in described, and when the length of first expansion chamber (72) was 150mm-200mm, interior pipe (22) stretched into first expansion (72) indoor 130mm-170mm.

4, motorcycle according to claim 2 is characterized in that: when the length of described first expansion chamber (72) was 150mm-200mm, interior pipe (22) stretched into the interior 80mm-120mm of first expansion chamber (72).