CN206477893U - A kind of engine breathing structure - Google Patents
A kind of engine breathing structure Download PDFInfo
- Publication number
- CN206477893U CN206477893U CN201720156939.6U CN201720156939U CN206477893U CN 206477893 U CN206477893 U CN 206477893U CN 201720156939 U CN201720156939 U CN 201720156939U CN 206477893 U CN206477893 U CN 206477893U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- valve
- piston
- engine
- rocking arm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses a kind of engine breathing structure, including piston/cylinder, piston/cylinder has middle cylinder and crankcase, the upper end of piston/cylinder is provided with provided with two exhaust passages in cylinder head cover, cylinder head cover, and two exhaust passages are connected with the exhaust outlet of piston/cylinder, two exhaust passages are respectively opened or closed by a reducible valve assembly control, two valve assemblies are interlocked by cam set control rocking arm, and one end of rocking arm is connected on valve assembly, and spark mouth is provided between two exhaust passages.Two valve alternations of the present utility model, in the case of the number of times and original engine cam axle number of times identical of cam axle, the valve opening times of this product are than original engine valve opening times mostly.When engine speed, which reaches, to be rotated at a high speed, the alternation of two valves can provide spring-compressed and the time of backhaul is more sufficient, and engine breathing can be allowed more effective, improves the performance and used life of engine.
Description
Technical field
The utility model is related to engine, more particularly to a kind of engine breathing structure.
Background technology
At present, existing engine breathing structure is controlled by bent wheel shaft, when bent wheel shaft control valve is opened, turns one
Circle, valve is opened once, when valve-closing, makes valve-closing by spring, when recoil of spring closes valve, speed ratio compared with
Slowly, the speed of valve switch does not catch up with the speed of bent wheel shaft, can influence the performance and used life of engine.
Utility model content
The purpose of this utility model is that the drawbacks described above for being directed to prior art exchanges speed there is provided a kind of simple in construction, valve
The fast engine breathing structure of degree.
To solve the drawbacks described above of prior art, the technical scheme that the utility model is provided is：A kind of engine breathing
Structure, including piston/cylinder, the piston/cylinder have middle cylinder and crankcase, and the upper end of the piston/cylinder is provided with cylinder head cover,
Provided with two exhaust passages in the cylinder head cover, exhaust outlet of two exhaust passages with the piston/cylinder is connected, and two
The individual exhaust passage is respectively opened or closed by a reducible valve assembly control, and two valve assemblies are by cam
Group control rocking arm is interlocked, and one end of the rocking arm is connected on the valve assembly, provided with fire between two exhaust passages
Flower mouth.
Improved as one kind of the utility model engine breathing structure, the cam set includes being used for turning with moving cam
Two cams are installed on dynamic camshaft, the camshaft, when the camshaft drives the cam rotation, the cam
Salient point constantly contacts rocking arm, opens or closes the valve assembly, and the cam axle one is enclosed, two valve groups
Part is opened once.
Improved as one kind of the utility model engine breathing structure, the valve assembly includes valve and for pacifying
Fill and a return spring is arranged with the valve stem of valve, the valve stem, one end of the valve stem connects the rocking arm.
Improved as one kind of the utility model engine breathing structure, the rocking arm is arranged on by a central locating rod
In the cylinder head cover.
Improved as one kind of the utility model engine breathing structure, bent axle, the song are provided with the crankcase
Axle controls a connecting rod, and the connecting rod is provided with piston, and the piston is stretched into the middle cylinder, and the piston is interior with the middle cylinder
Having between the wall of side on the airspace that supplied gas passes through, the side wall of the middle cylinder has a step.
Compared with prior art, the utility model has the advantages that：The utility model employs two cams and controls one respectively
Individual valve assembly, when cam drives rotation by camshaft, the salient point of cam constantly contacts rocking arm, beats valve assembly and opens or closes
Close, cam axle one is enclosed, two valve assemblies are opened once, two valve alternations, in the number of times of cam axle
In the case of original engine cam axle number of times identical, the valve opening times of this product are beaten than original engine valve
Open number of times mostly.When engine speed, which reaches, to be rotated at a high speed, the alternation of two valves can provide spring pressure
The time of contracting and backhaul is more sufficient, and engine breathing can be allowed more effective, improves the performance and used life of engine.
Brief description of the drawings
Further detailed just is made to the utility model and its beneficial technique effect with embodiment with reference to the accompanying drawings below
Thin description, wherein：
Fig. 1 is the utility model internal structure schematic diagram.
Reference title：1st, piston/cylinder 2, middle cylinder 3, crankcase 4, cylinder head cover 5, exhaust passage 6, valve assembly
7th, cam set 8, rocking arm 9, spark mouth 10, central locating rod 11, bent axle 12, connecting rod 13, piston 14, airspace
61st, valve 62, valve stem 63, return spring 71, camshaft 72, cam.
Embodiment
Just the utility model is further described with specific embodiment with reference to the accompanying drawings below, but implementation of the present utility model
Mode is not limited to this.
As shown in figure 1, a kind of engine breathing structure, including piston/cylinder 1, piston/cylinder 1 is with middle cylinder 2 and bent axle
Case 3, the upper end of piston/cylinder 1 is provided with provided with two exhaust passages 5 in cylinder head cover 4, cylinder head cover 4, two exhaust passages 5 with work
The exhaust outlet connection of plug cylinder body 1, two exhaust passages 5 are respectively opened or closed by the reducible control of valve assembly 6, and two
Individual valve assembly 6 controls rocking arm 8 to interlock by cam set 7, and one end of rocking arm 8 is connected on valve assembly 6, two exhaust passages 5
Between be provided with spark mouth 9.
It is preferred that, cam set 7 includes being provided with two cams on the camshaft 71 for being used to drive cam rotation, camshaft 71
72, when camshaft 71 is rotated with moving cam 72, the salient point of cam 72 constantly contacts rocking arm 8, opens or closes valve assembly 6 dozens
Close, camshaft 71 rotates one and enclosed, and two valve assemblies 6 are opened once.
It is preferred that, valve assembly 6 includes being arranged with valve 61 and the valve stem 62 for installing valve 61, valve stem 62
One return spring 63, one end connecting rocker arm 8 of valve stem 62.
It is preferred that, rocking arm 8 is arranged in cylinder head cover 4 by a central locating rod 10.
It is preferred that, bent axle 11 is provided with crankcase 3, bent axle 11 controls a connecting rod 12, and connecting rod 12 is provided with piston 13, piston
13 stretch into middle cylinder 2, the airspace 14 that there is supplied gas to pass through between the madial wall of piston 13 and middle cylinder 2, the side wall of middle cylinder 2
It is upper that there is a step 14.
The utility model has the advantages that：The utility model employs two cams and controls a valve assembly, cam respectively
72 by camshaft 71 when driving rotation, and the salient point of cam 72 constantly contacts rocking arm, opens or closes valve assembly, camshaft
71, which rotate one, is enclosed, and two valve assemblies 6 are opened once.Two valve alternations, cam axle number of times with it is original
In the case of engine cam number of revolutions identical, the valve opening times of this product are than original engine valve opening times
Mostly.When engine speed, which reaches, to be rotated at a high speed, the alternation of two valves can provide spring-compressed and return
The time of journey is more sufficient, and engine breathing can be allowed more effective, improves the performance and used life of engine.
While there has been shown and described that embodiment of the present utility model, for the ordinary skill in the art,
It is appreciated that these embodiments can be carried out in the case where not departing from principle of the present utility model and structure a variety of changes, repaiies
Change, replace and modification, scope of the present utility model is limited by appended claims and its equivalency range.
Claims (5)
1. a kind of engine breathing structure, including piston/cylinder, the piston/cylinder have middle cylinder and crankcase, its feature exists
In the upper end of the piston/cylinder is provided with cylinder head cover, the cylinder head cover provided with two exhaust passages, two exhaust passages
Exhaust outlet with the piston/cylinder is connected, and two exhaust passages are respectively beaten by a reducible valve assembly control
Open or close and close, two valve assemblies are interlocked by cam set control rocking arm, and one end of the rocking arm is connected to the valve group
On part, spark mouth is provided between two exhaust passages.
2. engine breathing structure according to claim 1, it is characterised in that the cam set includes convex for driving
Take turns and two cams are installed on the camshaft rotated, the camshaft, it is described convex when the camshaft drives the cam rotation
The salient point of wheel constantly contacts rocking arm, opens or closes the valve assembly, and the cam axle one is enclosed, two gas
Door component is opened once.
3. engine breathing structure according to claim 2, it is characterised in that the valve assembly includes valve and use
In being arranged with a return spring on the valve stem for installing valve, the valve stem, one end of the valve stem connects the rocking arm.
4. engine breathing structure according to claim 3, it is characterised in that the rocking arm is pacified by a central locating rod
In the cylinder head cover.
5. engine breathing structure according to claim 4, it is characterised in that bent axle, institute are provided with the crankcase
State bent axle and control a connecting rod, the connecting rod is provided with piston, and the piston is stretched into the middle cylinder, the piston and the middle cylinder
Madial wall between there is the airspace that passes through of supplied gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720156939.6U CN206477893U (en) | 2017-02-21 | 2017-02-21 | A kind of engine breathing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720156939.6U CN206477893U (en) | 2017-02-21 | 2017-02-21 | A kind of engine breathing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206477893U true CN206477893U (en) | 2017-09-08 |
Family
ID=59747960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720156939.6U Expired - Fee Related CN206477893U (en) | 2017-02-21 | 2017-02-21 | A kind of engine breathing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206477893U (en) |
-
2017
- 2017-02-21 CN CN201720156939.6U patent/CN206477893U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4727831A (en) | Valve operating mechanism for internal combustion engine | |
| JP2007107542A5 (en) | ||
| JP2007107544A5 (en) | ||
| JP2007107543A5 (en) | ||
| CN101608560A (en) | A kind of engine air distribution system of electric liquid Comprehensive Control | |
| US20090145410A1 (en) | Breathing for an internal combustion engine | |
| US8726864B2 (en) | Engine that actively varies compression expansion ratio | |
| CN102619583B (en) | Concave-convex wheel rocker arm type valve distribution mechanism and matched internal combustion engine | |
| CN206477893U (en) | A kind of engine breathing structure | |
| CN109882287A (en) | Rotating disc type internal combustion engine | |
| CN101713308B (en) | Hydraulic valve mechanism of variable valve lift | |
| CN203531990U (en) | Valve timing mechanism of internal combustion engine | |
| US1951759A (en) | Internal combustion engine | |
| WO2015180535A1 (en) | Valve mechanism of engine, engine and vehicle | |
| CN203796455U (en) | Changeable intake manifold | |
| CN103850736A (en) | Gear-type variable valve device based on split cam | |
| CN103850745B (en) | A kind of plunger type variable valve gear based on split cam | |
| CN103850737B (en) | A kind of baffle-type variable valve gear based on split cam | |
| CN101349174A (en) | Combined valve body external opening distribution engine | |
| US7849824B2 (en) | Two-stroke internal combustion engine with enhanced scavenging | |
| US6095106A (en) | Cyclo-valve for internal combustion engines | |
| CN2546634Y (en) | Rotary air door internal combustion engine | |
| SE542342C2 (en) | Four-stroke Internal Combustion Engine, thereto Related Vehicle and Method for Engine Braking | |
| US1616064A (en) | Internal-combustion engine | |
| CN105386804B (en) | A kind of cam structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170908 Termination date: 20200221 |