CN2811583Y

CN2811583Y - Low noise air filter for motorcycle

Info

Publication number: CN2811583Y
Application number: CN 200520009346
Authority: CN
Inventors: 何承中; 张全后
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-25
Filing date: 2005-05-25
Publication date: 2006-08-30
Anticipated expiration: 2015-05-25

Abstract

The utility model discloses a low noise air filter of a motorcycle, which comprises a casing, an air inlet pipe, a filtering core component, a fireproof plate and an air outlet pipe, wherein the filtering core component is arranged in the casing to divide the casing into a front and a rear cavities, the rear cavity is connected with the air outlet pipe, and the fireproof plate is arranged between the filtering core component and the air outlet pipe; the front cavity which is an expansion cavity is connected with the air inlet pipe, and an air inlet of the air inlet pipe forms a horn shape; the air inlet pipe extends into the expansion cavity, and an air outlet has an inclined face which faces to any cavity wall except for the filtering core component; the air inlet of the air inlet pipe forms a horn shape. By a reasonable structural design, the utility model can achieve the purposes of effectively reducing the working noise of an air filter, preventing water entering a carburetor and improving the reliability and the durability of an engine.

Description

Motorcycle low noise air-strainer

Technical field

The utility model belongs to motor air filter for automobile technology, is specifically related to a kind of motorcycle of controlling induction noise low noise air-strainer.

Background technique

The empty filter that existing motorcycle is used, its suction port all are straight mouthful, cause charge air flow to have some setbacks, and produce induction noise.In addition, after air enters suction port, just enter expansion chamber through very short flow process, air expansion when entering expansion chamber, flow velocity reduces, and energy discharges and is converted to acoustic energy, also can form bigger induction noise.And enter from suction tude if any water, under the effect of negative pressure, water is easy to enter filter core, will bring in Carburetor and the motor attached to the silt on the filter core, dust particle, causes Carburetor to stop up easily and the engine abnormity wearing and tearing.

Summary of the invention:

The purpose of this utility model is to disclose a kind of motorcycle low noise air-strainer at the deficiency of prior art existence, reduces induction noise and effective waterproof of empty filter.

The technical solution of the utility model is as follows:

This air-strainer is tubaeform with the shaped design of the suction port of suction tude, has guaranteed that like this air inlet is smooth and easy, has alleviated the sound that trembles of suction port.

Further, the utility model guarantees under the constant situation of its original resistance and flow, the suction tude flow process is increased and stretch in the expansion chamber as far as possible, when energy release is converted to acoustic energy, because it is far away and stretch in the expansion chamber apart from air intake, the sound wave that returns has greatly and is absorbed by chamber wall and filter core in expansion chamber, so that sound wave returns is less, thereby has reached the effect of noise reduction.In addition, its air outlet is designed to the inclined-plane, and any one side chamber wall of subtend except that element kit, it is the filter core of the empty filter of direct subtend, also can partly stop and decay on the one hand and pass the tonepulse of coming by the Carburetor end, even there is water to enter on the other hand, also is not easy to enter filter core, thereby improved the reliability and the durability of motor.And, reduce the water capacity and easily enter the possibility of filter core, even there is a spot of water to enter, also be not easy to enter filter core.Thereby played the effect of noise reduction, and improved the reliability and the durability of motor.

In addition, the air outlet sectional area with suction tude is designed to: suction port sectional area ÷ air outlet sectional area 〉=53%; And suction tude stretches in the expansion chamber, because the air outlet is the inclined-plane, and bond length 〉=35mm that it stretches into.Its effect is to prevent gas too fast expansion in runner, and guarantees that suction tude has certain built-in length, after air expands in pipeline enters expansion chamber, can reduce sound wave and return suction port.

Therefore the utility model can reach the empty filter operating noise of effective reduction by reasonable structural design, and anti-sealing enters Carburetor, improves the reliability of motor and the purpose of durability.

Description of drawings

Fig. 1 is a structural drawing of the present utility model;

Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D are respectively the schematic representation of several shapes of suction port.

Embodiment

Referring to Fig. 1, this motorcycle mainly includes housing 1, suction tude 4, by dividing plate 5 with by screw II 7 element kit, fireproof plate 8 and the steam outlet pipe 9 etc. that filter core 6 is within it formed is installed with the low noise air-strainer.Rubber cushion 2 is arranged on the housing 1, and housing 1 bottom is equipped with cap 12 by screw I 3, and there are garter spring 10 and screw III 11 in the joint of steam outlet pipe 9.Above-mentioned element kit is contained in the housing 1, two chambeies before and after housing is divided into, and ante-chamber is an expansion chamber 13, and suction tude 4 extend in the expansion chamber, and back cavity 14 connects steam outlet pipe 9, and between element kit and steam outlet pipe 9 fireproof plate 8 is set.Suction tude 4 is crooked tubular, and its air outlet is the inclined-plane, not direct subtend element kit.Suction port sectional area ÷ air outlet sectional area 〉=53%, suction tude stretch into the length 〉=35mm of the minor face a in the expansion chamber.The intake port shape of suction tude is tubaeform, it can be rectangular horn, it also can be round speaker, as what show among Fig. 2 A, Fig. 2 B, Fig. 2 C, Fig. 2 D is several flared structure forms of rectangular air inlet pipe, d represents bevel angle among the figure, and specifically: what Fig. 2 A showed is that periphery all is the tubaeform of inclined-plane, and what Fig. 2 B showed is that both sides are the tubaeform of inclined-plane up and down, what Fig. 2 C showed is that both sides are the tubaeform of inclined-plane, and Fig. 2 D shows is monolateral tubaeform for the inclined-plane.

Claims

1, motorcycle low noise air-strainer, have housing (1), suction tude (4), element kit, fireproof plate (8) and steam outlet pipe (9), element kit (6) is contained in the housing (1), housing is divided into two chambeies, front and back, ante-chamber is an expansion chamber, be connected to suction tude (4), back cavity connects steam outlet pipe (9), and fireproof plate (8) is set between element kit and steam outlet pipe; It is characterized in that: the intake port shape of described suction tude (4) is tubaeform.

2, motorcycle according to claim 1 low noise air-strainer is characterized in that: the tubaeform of suction port is rectangular horn or round speaker.

3, motorcycle according to claim 1 and 2 low noise air-strainer is characterized in that: suction tude (4) extend in the expansion chamber, and its air outlet is the inclined-plane, and any one side chamber wall of subtend except that element kit.

4, motorcycle according to claim 3 low noise air-strainer is characterized in that: the suction port sectional area of suction tude (4) and the sectional area ratio of air outlet are: suction port sectional area ÷ air outlet sectional area 〉=53%.

5, motorcycle according to claim 3 low noise air-strainer is characterized in that: described suction tude (4) extend into the bond length 〉=35mm in the expansion chamber.

6, motorcycle according to claim 3 low noise air-strainer is characterized in that: suction tude is a straight tube shape or crooked tubular.