CN103437873A

CN103437873A - Constant force mechanism-based automobile exhaust system valve

Info

Publication number: CN103437873A
Application number: CN2013102951416A
Authority: CN
Inventors: 汪若尘; 朱静; 叶青; 谢健
Original assignee: Jiangsu University
Current assignee: Jiangsu University
Priority date: 2013-07-15
Filing date: 2013-07-15
Publication date: 2013-12-11
Anticipated expiration: 2033-07-15
Also published as: CN103437873B

Abstract

The invention relates to an automobile exhaust system valve, in particular to a constant force mechanism-based automobile exhaust system valve. The constant force mechanism-based automobile exhaust system valve comprises an exhaust tube, a valve plate, a handle, a steel wool bushing and a constant force mechanism, wherein the constant force mechanism consists of a base plate, a rotating shaft, a key, a variable radius tower wheel, a positioning pin, a volute spiral spring, a clamping spring and a shell; one end of the handle transversely penetrates through the exhaust tube; the valve plate is placed in the exhaust tube and is welded on the handle; the steel wool bushing is arranged between the handle and the exhaust tube; the other end of the handle is connected to the constant force mechanism through a steel wire rope; the constant force mechanism is connected with the exhaust tube through threads. According to the constant force mechanism-based automobile exhaust system valve, the valve can be closed when an automobile is in a low-speed state so as to solve the problem of low-frequency noise; the exhaust pressure is increased and the valve is opened in a high-speed state, so that the exhaust state is smoother, the high-speed performance of the automobile is guaranteed, and the valve can be kept in an open state with only a fixed pressure.

Description

A kind of automobile exhaust system valve based on constant force system

Technical field

The present invention relates to a kind of automobile exhaust system valve, particularly a kind of automobile exhaust system valve based on constant force system.

Background technique

A major function of automobile exhaust system is the noise problem that solves motor car engine, especially slow-revving low-frequency noise problem, the application of acoustics valve, low-frequency noise problem while can be good at solving the slow-speed of revolution, but traditional spring controlled valve, when high rotating speed, reaction force to vent systems also can increase, the back pressure of vent systems increases, and has wasted the power of motor, has increased oil consumption; Therefore need a kind of new device can either solve slow-speed of revolution noise problem, the back pressure in the time of also can not increasing high rotating speed simultaneously.

Summary of the invention

Purpose of the present invention, be to provide a kind of and keep closing at low speed situation lower valve, solves the low-frequency noise problem under low speed state; Under high speed conditions, valve opening, make the exhaust situation more smooth and easy, guarantees the high speed performance of automobile, and can guarantee fixing pressure of needs only can make valve be held open state based on the automobile exhaust system valve.

The object of the present invention is achieved like this: a kind of automobile exhaust system valve based on constant force system, it is characterized in that comprising: outlet pipe, on outlet pipe perpendicular to axis and with on the position of axes intersect do not have two coaxial apertures, and weldering one boss on diametric plane, process screw thread on boss outside outlet pipe;

Valve block;

Handle, be zigzag;

The Steel Wool lining;

Constant force system.

Described vent systems valve utilizes the pulling force of constant force system output to remain unchanged, and while guaranteeing valve opening, waste gas is constant to the pressure of valve block, and then the back pressure of vent systems is constant while guaranteeing valve opening.

The coaxial aperture of described outlet pipe adopts perforate in advance, the molten technique of boring reaming of reusable heat.

Described constant force system, adopt spiral spring and reducing cone pulley to be used in conjunction with, and constant force system output pulling force is remained unchanged.

Automobile exhaust system valve based on constant force system of the present invention, under the pulling force effect applied at constant force system at automobile low speed situation lower valve, close, the outlet pipe effective diameter of pipe reduces, thereby makes vent systems maintain certain exhaust back pressure to guarantee the low-speed performance of automobile; And, under high speed conditions, the waste gas that motor is discharged increases, exhaust gas pressure increases, and when pressure is greater than the pulling force that constant force system applies, valve block is open, valve opening, and the outlet pipe effective diameter of pipe increases, and the exhaust situation is more smooth and easy, thereby guarantees the high speed performance of automobile; And the pulling force applied due to constant force system is certain, so only need a fixing exhaust pressure can make valve be held open state.

The accompanying drawing explanation

Fig. 1 is the overall structure schematic diagram that the present invention is based on the automobile exhaust system valve of constant force system;

Fig. 2 is the overall structure schematic diagram of constant force system.

Embodiment

Referring to Fig. 1, Fig. 2, automobile exhaust system valve of the present invention, comprise outlet pipe 1, valve block 2, handle 3, Steel Wool lining 4 and constant force system 5, constant force system 5 consists of chassis 5a, rotating shaft 5b, reducing cone pulley 5c, spiral spring 5d, key 5e, wire rope 5f, jump ring 5g, locating stud 5h, locating stud 5i and housing 5j; Wherein handle 3 one ends pass across outlet pipe 1, valve block 2 is placed in outlet pipe 1 and is welded on handle 3, Steel Wool lining 4 is installed between handle 3 and outlet pipe 1, and handle 4 the other ends are connected on constant force system 5 by wire rope 5f, and constant force system 5 is connected with outlet pipe 1 by screw thread; The rotating shaft 5b of constant force system 5 installs with chassis 5a is concentric, reducing cone pulley 5c fixes by key 5e and rotating shaft 5b circumferencial direction, by jump ring 5g and rotating shaft 5b axial restraint, spiral spring 5d the inner is arranged on rotating shaft 5b by locating stud 5h, it is upper that outer end is arranged on chassis 5a by locating stud 5i, on reducing cone pulley 5c, has spiral chute, coiling wire rope 5f in groove, wire rope 5f end is enclosed within on handle 3, and there is housing 5j constant force system 5 outsides.

Working principle of the present invention in conjunction with Fig. 1, Fig. 2, be described as follows:

Under the pulling force effect applied at constant force system 5 at automobile low speed situation lower valve, close, outlet pipe 1 effective diameter of pipe reduces, thereby makes vent systems maintain certain exhaust back pressure to guarantee the low-speed performance of automobile; And, under high speed conditions, the waste gas that motor is discharged increases, exhaust gas pressure increases, when pressure is greater than the pulling force that constant force system 5 applies, valve block 2 is open, valve opening, and outlet pipe 1 effective diameter of pipe increases, the exhaust situation is more smooth and easy, thereby guarantees the high speed performance of automobile; And the pulling force applied due to constant force system 5 is certain, so only need a fixing exhaust pressure can make valve be held open state.

Claims

1. the automobile exhaust system valve based on constant force system, it is characterized in that: described automobile exhaust system valve is comprised of outlet pipe (1), valve block (2), handle (3), Steel Wool lining (4) and constant force system (5), and constant force system 5 consists of chassis (5a), rotating shaft (5b), reducing cone pulley (5c), spiral spring (5d), key (5e), wire rope (5f), jump ring (5g), locating stud (5h), locating stud (5i) and housing (5j); Wherein handle (3) one ends pass across outlet pipe (1), valve block (2) is placed in outlet pipe (1) and is welded on handle (3), Steel Wool lining (4) is installed between handle (3) and outlet pipe (1), handle (3) the other end is connected on constant force system 5 by wire rope 5f, and constant force system 5 is connected with outlet pipe 1 by screw thread; The rotating shaft of constant force system 5 (5b) and chassis (5a) concentric installation, reducing cone pulley (5c) is fixed by key (5e) and rotating shaft (5b) circumferencial direction, by jump ring (5g) and rotating shaft (5b) axial restraint, spiral spring (5d) is inner to be arranged in rotating shaft (5b) by locating stud (5h), outer end is arranged on chassis (5a) by locating stud (5i), have spiral chute on reducing cone pulley (5c), coiling wire rope (5f) in groove, it is upper that wire rope (5f) end is enclosed within handle (3), and there is housing (5j) constant force system (5) outside.

2. a kind of automobile exhaust system valve based on constant force system as claimed in claim 1, it is characterized in that: described outlet pipe (1) is upper perpendicular to axis and with on the position of axes intersect do not have two coaxial apertures, described Steel Wool lining (4) is arranged in two coaxial apertures, and described handle (3) is arranged in Steel Wool lining (4); On the outer diametric plane of described outlet pipe (1), weldering one boss, process screw thread on boss, and constant force system (5) is connected with outlet pipe 1 by screw thread.

3. a kind of automobile exhaust system valve based on constant force system as claimed in claim 1, it is characterized in that: described handle (3) is zigzag.