CN201526389U - Internal-combustion engine secondary air inlet system with damping chamber - Google Patents
Internal-combustion engine secondary air inlet system with damping chamber Download PDFInfo
- Publication number
- CN201526389U CN201526389U CN2009202362834U CN200920236283U CN201526389U CN 201526389 U CN201526389 U CN 201526389U CN 2009202362834 U CN2009202362834 U CN 2009202362834U CN 200920236283 U CN200920236283 U CN 200920236283U CN 201526389 U CN201526389 U CN 201526389U
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- air inlet
- damping chamber
- secondary air
- internal
- combustion engine
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Abstract
The utility model relates to an internal-combustion engine secondary air inlet system, particularly to an internal-combustion engine secondary air inlet system with a damping chamber, which belongs to the technical field of internal-combustion engines. The system comprises a carburetor or an electrical fuel oil injection system which is connected with a piston via an air inlet passage, a combustion chamber is arranged on the piston, the air inlet passage is connected with a secondary air inlet passage, the damping chamber is connected to one end of the secondary air inlet passage, the other end of the damping chamber is connected with an air resistor regulating device via connecting pipes, and the air resistor regulating device is connected with an air filter via the connecting pipes. The system eliminates a check valve in a traditional structure, can refill a certain amount of air to the air inlet passage of an engine regardless of low speed rotation, middle-speed rotation or high-speed rotation so as to improve combustion, and solves the problem of pressure fluctuation inside the air inlet passage of the engine by adding the damping chamber.
Description
Technical field
The utility model relates to a kind of internal-combustion engine secondary air inlet system, relates to a kind of internal-combustion engine secondary air inlet system with damping chamber specifically, belongs to technical field of internal combustion engines.
Background technique
China is motorcycle, automobile production big country, but the homemade motorcycle of China, the employed internal-combustion engine of low side compact car mixed steam overrich of various degrees all causes burning bad, and discharging exceeds standard, problems such as oil consumption height.Now China has implemented European II emission standard to motorcycle emission, and each big motorcycle manufacturing enterprise has developed various secondary air-in devices in succession, satisfies the requirement of emission limit set; At electronic vehicle fuel-injection multi-cylinder petrol engine, various secondary air-in devices are arranged also on the market.These traditional secondary air-in devices all are the secondary air inlet roads that is connected with intake duct by 1.; 2. the one-way valve of adjustable in pressure; 3. small-sized empty filter is formed.The form of the just one-way valve of using with automobile that motorcycle is used is different, and motorcycle drives with reed, the driving with spring of automobile.But they have two common shortcomings: the first, the traditional secondary air inlet system can only can work when time of engine low speed.Spool could be drawn back because the one-way valve on the secondary air inlet road needs to produce in the intake duct enough big negative pressure, make fresh air suck intake duct.When the internal-combustion engine low-speed running, the air throttle aperture is less, and the negative pressure in the intake duct is higher, and one-way valve can be opened when engine charge, imports portion of air and improves burning.When the motor high speed turned round, the air throttle aperture was bigger, and the negative pressure in the intake duct decreases, and imported air to such an extent as to can not open one-way valve, had therefore just lost effect.The second, the traditional secondary air inlet system can not solve the problem of mixed steam pressure big ups and downs in the engine inlets.Because air has inertia, near during IC Intake Valve Closes intake valve mixed steam can produce one back pressure ripple, the barotropic wave that mixed steam produced that still has inertia with the back is inconsistent, make the mixed steam in the intake duct produce instantaneous pressure and concuss, had a strong impact on the intake efficiency of motor.And when producing instantaneous pressure in the intake duct, the one-way valve the secondary air inlet road in is closed, and can't suppress the pressure surge of the interior mixed steam of intake duct.
Summary of the invention
The purpose of this utility model is for overcoming above-mentioned the deficiencies in the prior art part, a kind of internal-combustion engine secondary air inlet system with damping chamber is provided, it includes Carburetor or electronic fuel injection system is connected with piston by intake duct, combuster on the piston, described intake duct is connected with the secondary air inlet road, one end in secondary air inlet road is connected with the damping chamber, the other end of damping chamber is connected with the resistance of air controlling device by connecting tube, the resistance of air controlling device connects air-strainer by connecting tube, this system has cancelled the one-way valve of conventional construction, no matter low, in, can provide air in certain amount to replenish in the intake duct for motor when running up, to improve burning, add a damping chamber, solved the problem of engine inlets internal pressure fluctuation.
The utility model is realized with following technological scheme: a kind of internal-combustion engine secondary air inlet system with damping chamber, it includes Carburetor or electronic fuel injection system is connected with piston by intake duct, combuster on the piston, it is characterized in that: described intake duct is connected with the secondary air inlet road, one end in secondary air inlet road is connected with the damping chamber, the other end of damping chamber is connected with the resistance of air controlling device by connecting tube, and the resistance of air controlling device connects air-strainer by connecting tube.
Combuster on the described piston, top of combustion chamber has exhaust valve, between firing chamber and the intake duct intake valve is arranged.
Air throttle or bolt regulating device are arranged on the described resistance of air controlling device or directly bend tracheae.
Described damping chamber is connected with intake duct or the damping chamber directly is arranged in the intake duct by the secondary air inlet road, and promptly intake duct directly passes the damping chamber.
The connecting tube of back, described damping chamber is connected with breather check valve and outgassing nonreturn valve respectively, and breather check valve is connected with air-strainer by connecting tracheae.
The utility model has the advantages that: this system is connected with the secondary air inlet road by intake duct, one end in secondary air inlet road has damping chamber and resistance of air controlling device, make motor proper functioning under thinner mixed steam, the intake efficiency of motor and the turbulence intensity of inlet stream have been improved simultaneously greatly, improve power, reduced oil consumption.This internal-combustion engine secondary air inlet system also has respiration simultaneously, not only can when low-speed running, provide sufficient fresh air to motor, and this system can provide more fresh air to motor equally when high speed turns round, and makes motor proper functioning under than lean mixture vapour state.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail:
Fig. 1 is the utility model IC Intake Valve Closes status architecture schematic representation:
Fig. 2 is the utility model IO Intake Valve Opens status architecture schematic representation:
Fig. 3 is another kind of embodiment's a structural representation:
Among the figure: 1. piston, 2. exhaust valve, 3. intake valve, 4. back pressure ripple, 5. barotropic wave, 6. mixed steam, 7. air-strainer, 8. resistance of air controlling device, 9. connecting tube, 10. damping chamber, 11. secondary air inlet roads, 12. Carburetors or electronic fuel injection system, 13. intake duct, 14. the firing chamber, 15. breather check valves, 16. outgassing nonreturn valves.
Embodiment
As shown in the figure: a kind of internal-combustion engine secondary air inlet system with damping chamber, it includes Carburetor or electronic fuel injection system 12 is connected with piston 1 by intake duct 13, combuster 14 on the piston, described intake duct 13 is connected with secondary air inlet road 11, one end in secondary air inlet road is connected with damping chamber 10, the other end of damping chamber is connected with resistance of air controlling device 8 by connecting tube 9, and resistance of air controlling device 8 connects air-strainer 7 by connecting tube.
Air throttle or bolt regulating device are arranged on the described resistance of air controlling device 8 or directly bend tracheae.
Described damping chamber 10 is connected with intake duct 13 or damping chamber 10 directly is arranged in the intake duct 13 by secondary air inlet road 11, and promptly intake duct directly passes the damping chamber.
The connecting tube 9 of 10 back, described damping chamber is connected with breather check valve 15 and outgassing nonreturn valve 16 respectively, and breather check valve 15 is connected with air-strainer 7 by connecting tube 9.
Working procedure: as shown in Figure 1: when the internal-combustion engine compression stroke begins, after intake valve 3 is closed, the mixed steam 6 of instantaneous pressure enters damping chamber 10 by secondary air inlet road 11, because the air that originally is present in the damping chamber is extruded in entering of mixed steam 6, enters atmosphere by connecting tube 9 and air-strainer 7.
As shown in Figure 2: when the air-intake of combustion engine stroke begins, intake valve 3 is opened once more, mixed steam 6 in the damping chamber 10 is sucked cylinder fast, fresh air sucks intake duct by air-strainer 7, connecting tube 9, resistance of air controlling device 8 and secondary air inlet road 11, thereby diluted mixture vapour 6 makes motor proper functioning under thinner mixed steam, has improved the intake efficiency of motor and the turbulence intensity of inlet stream simultaneously greatly, improve power, reduced oil consumption.
As shown in Figure 3: when the internal-combustion engine compression stroke begins, the mixed steam 6 that intake valve 3 is closed the back instantaneous pressure enters damping chamber 10 by secondary air inlet road 11, because the air that originally is present in the damping chamber is extruded in entering of mixed steam 6, this moment, breather check valve 15 was closed, and entered atmosphere by connecting tracheae 9 and outgassing nonreturn valve 16.
Claims (5)
1. internal-combustion engine secondary air inlet system with damping chamber, it includes Carburetor or electronic fuel injection system (12) is connected with piston (1) by intake duct (13), combuster on the piston (14), it is characterized in that: described intake duct (13) is connected with secondary air inlet road (11), one end in secondary air inlet road is connected with damping chamber (10), the other end of damping chamber is connected with resistance of air controlling device (8) by connecting tube (9), and resistance of air controlling device (8) connects air-strainer (7) by connecting tube.
2. a kind of internal-combustion engine secondary air inlet system with damping chamber according to claim 1 is characterized in that: described piston (1) is gone up combuster (14), and top of combustion chamber has exhaust valve (2), and intake valve (3) is arranged between firing chamber and the intake duct (13).
3. a kind of internal-combustion engine secondary air inlet system with damping chamber according to claim 1 is characterized in that: air throttle or bolt regulating device are arranged on the described resistance of air controlling device (8) or directly bend tracheae.
4. a kind of internal-combustion engine secondary air inlet system according to claim 1 with damping chamber, it is characterized in that: described damping chamber (10) can be to be connected with intake duct (13) or damping chamber (10) directly are arranged in the intake duct (13) by secondary air inlet road (11), and promptly intake duct directly passes the damping chamber.
5. a kind of internal-combustion engine secondary air inlet system according to claim 1 with damping chamber, it is characterized in that: the connecting tube (9) of back, described damping chamber (10) is connected with breather check valve (15) and outgassing nonreturn valve (16) respectively, and breather check valve (15) is connected with air-strainer (7) by connecting tube (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202362834U CN201526389U (en) | 2009-09-25 | 2009-09-25 | Internal-combustion engine secondary air inlet system with damping chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202362834U CN201526389U (en) | 2009-09-25 | 2009-09-25 | Internal-combustion engine secondary air inlet system with damping chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201526389U true CN201526389U (en) | 2010-07-14 |
Family
ID=42517677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202362834U Expired - Fee Related CN201526389U (en) | 2009-09-25 | 2009-09-25 | Internal-combustion engine secondary air inlet system with damping chamber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201526389U (en) |
-
2009
- 2009-09-25 CN CN2009202362834U patent/CN201526389U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100714 Termination date: 20110925 |