CN2809243Y - Single-cylinder overhead four-valve engine - Google Patents
Single-cylinder overhead four-valve engine Download PDFInfo
- Publication number
- CN2809243Y CN2809243Y CNU2005200335270U CN200520033527U CN2809243Y CN 2809243 Y CN2809243 Y CN 2809243Y CN U2005200335270 U CNU2005200335270 U CN U2005200335270U CN 200520033527 U CN200520033527 U CN 200520033527U CN 2809243 Y CN2809243 Y CN 2809243Y
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- CN
- China
- Prior art keywords
- rocker arm
- exhaust
- intake
- utility
- model
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model relates to a single overhead four-valve engine. The utility model comprises components, such as a cylinder end, a rocker arm bracket, intake charge and exhaust rocker arm components, a camshaft, etc. The utility model is provided with two intake valves, two exhaust valves, a set of the intake charge rocker arm components and a set of the exhaust rocker arm components, a combustion chamber of the engine forms a radial wedge shape and a spark plug hole is arranged on a central position of the combustion chamber of the cylinder end. Because the utility model designs the two intake valves and the two exhaust valves, bilateral vortex intake charge is formed by the radial wedge-shaped combustion chamber, the charging efficiency of the engine is enhanced, compared with a two-valve engine, the corresponding power and the torque of the utility model are enhanced by about 15%, and the power of the engine per liter can be increased by 20%. A spark plug is arranged on the central position of the combustion chamber, the propagation distance of flame is shortened, which is favorable for the combustion of mixed gas, the combustion of the engine is more sufficient, pollution emission is lower and oil consumption is reduced simultaneously. The utility model has simple structure, the structure causes the utility model to run steadily under the state of idle speed and noise is reduced.
Description
Technical field
The utility model belongs to the motorcycle engine technical field, is specifically related to a kind of single overhead type four-valve engine.
Background technique
In numerous motorcycle engines, single overhead two-air valve engine, as the CB machine with compare with displacement engine, have the charging efficiency height, the mean effective pressure height, acceleration performance is good, comfort property is good, the advantage that noise is low is subjected to the welcome of Ai Che gang deeply.But only be provided with two valves in the air distributing device of this class motor, i.e. an intake valve, an exhaust valve, thereby its charging efficiency also is subjected to certain limitation, output power and torque ratio are less.
In recent years, many Valves Technology begin to use on some motorcycle engine, for example the three valve type.Because many valves can improve charging efficiency, increase power and the moment of torsion of motor, reduce fuel consumption, therefore more and more are subjected to the welcome in market.Yet still there are some defectives in three-valve engine of the prior art, and it is provided with two intake valves, and an exhaust valve has solved the problem of air inlet, but has only an exhaust valve, so exhaust is not thorough; Two intake valves on the cylinder head, an exhaust valve also is unfavorable for the layout of spark plug, it is insufficient to cause burning.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of charging efficiency height, sufficient combustion, single overhead type four-valve engine simple and reliable for structure.
The technical solution of the utility model is as follows:
Single overhead type four-valve engine includes assemblies such as cylinder head, rocker arm support, inlet and outlet rocker arm assembly and camshaft.Two intake valves and two exhaust valves on the described cylinder head, they are arranged in the air inlet side and the exhaust side of cylinder head, and spark-plug hole is arranged on the central position of cylinder head firing chamber; Each one group of inlet and outlet rocker arm assembly, wherein the intake rocker assembly is made up of intake rocker, intake rocker axle, intake rocker spring, priming lever spring extension pin, adjusting screw and adjusting nut, the exhaust rocker arm assembly is hung pin, adjusting screw and adjusting nut by exhaust rocker arm, exhaust rocker arm axle, exhaust rocker arm spring, priming lever spring and is formed, the intake and exhaust rocking arm all has a forearm and two postbrachiums, forearm is connected on the camshaft, and two postbrachiums link to each other with the valve seat of honour of two intake valves and two exhaust valves respectively by adjusting screw and adjusting nut.The inlet and exhaust valve pitman arm shaft is installed on the rocker arm support by pitman arm shaft and priming lever spring separately, and rocker arm support is installed on the cylinder head.The firing chamber of motor is radial wedge shape.
Distribution function implementation of the present utility model is such: work as engine start, drive the camshaft rotation by chain, the forearm of intake and exhaust rocking arm promptly drives two postbrachiums by pitman arm shaft and moves up and down, door has been advanced in two of the drives that move up and down of two postbrachiums and two exhaust valves move up and down in proper order, finishes the breathing action of engine valve actuating mechanism.
The utility model advances two rows owing to designed two, be arranged in the both sides of engine cylinder head, by radial wedge-section combustion chamber, form bilateral vortex air intake, improved the charging efficiency of motor, corresponding power and torque ratio two-air valve engine have improved about 15%, and HP, hp/litre can increase by 20%; Spark plug is arranged in the central position of firing chamber, has shortened the propagation of flame distance, help the burning of mixed gas, make engine combustion more abundant, disposal of pollutants is lower, has reduced oil consumption simultaneously; Simultaneously, of the present utility model relatively simple for structure, this structure makes under the idling mode operation extremely steady, and noise reduces greatly.
Description of drawings
Fig. 1 is a general construction schematic representation of the present utility model;
Fig. 2 be Fig. 1 P to shown in the structural representation of cylinder head;
Fig. 3 is the schematic representation that cylinder head is laterally cut open from the middle part, firing chamber;
Fig. 4 is the structural representation of rocker arm support of the present utility model;
Fig. 5 is the structural representation of camshaft of the present utility model;
Fig. 6 is the structural representation of intake rocker assembly;
Fig. 7 is the structural representation of exhaust rocker arm assembly.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further:
Among the figure: 1-cylinder head, 2-rocker arm support, 3-camshaft, 4-intake rocker assembly, 5-exhaust rocker arm assembly, 6-intake rocker, 7-intake rocker axle, 8-intake rocker spring, 9-exhaust rocker arm, 10-exhaust rocker arm axle, 11-exhaust rocker arm spring, 12A, 12B-priming lever spring are hung pin, 13A, 13B-adjusting screw, 14A, 14B-adjusting nut 15A, 15B- forearm 16A, 16B-postbrachium 17A, 17B- intake valve 18A, 19 firing chambers, 20 spark-plug holes of 18B-exhaust valve
Shown in Figure 1 is the structure of an overhead type four-valve engine, because of the improvement part of this patent mainly in cylinder head and air inlet system and exhaust system part, so only show improvement part among the figure in detail, all the other structures do not show in detail.Referring to Fig. 1 and Fig. 3, its cylinder head 1 both sides are furnished with two intake valve 17A, 17B and two exhaust valve 18A, 18B respectively, and firing chamber 19 is radial wedge shape, and spark-plug hole 20 is arranged on the central position of cylinder head firing chamber.Referring to Fig. 6 and Fig. 7, motor is established respectively one group of inlet and outlet rocker arm assembly 4,5, wherein intake rocker assembly 4 is made up of intake rocker 6, intake rocker axle 7, intake rocker spring 8, priming lever spring extension pin 12A, adjusting screw 13A and adjusting nut 14A, and the exhaust rocker arm assembly hangs pin 12B, adjusting screw 13B by exhaust rocker arm 9, exhaust rocker arm axle 10, exhaust rocker arm spring 11, priming lever spring and adjusting nut 14B forms.Intake and exhaust rocking arm 6 and 9 all has forearm 15A, a 15B and two postbrachium 16A, 16B, forearm is connected on the camshaft 3, see Fig. 2 and Fig. 5, two postbrachiums link to each other by adjusting screw 13A, 13B and adjusting nut 14A, 14B and two intake valve 17A, 17B and two exhaust valve 18A, 18 the valve seat of honour, the inlet and exhaust valve rocker arm assembly by separately pitman arm shaft 7 and 10 and priming lever spring 8 and 11, priming lever spring hang pin 8 and 12 and be installed on the rocker arm support 2; rocker arm support 2 is installed on the cylinder head 1, sees Fig. 2 and Fig. 4.
Claims (2)
1, single overhead type four-valve engine, include cylinder head, rocker arm support, inlet and outlet rocker arm assembly and camshaft, it is characterized in that: two intake valves (17A, 17B) and two exhaust valves (18A, 18B) on the cylinder head, they are arranged in the both sides of cylinder head; Spark-plug hole (20) is arranged on the central position of cylinder head firing chamber (19); Advance, each one group of exhaust rocker arm assembly, wherein the intake rocker assembly is by intake rocker (6), intake rocker axle (7), intake rocker spring (8); priming lever spring is hung and sold (12A); adjusting screw (13A) and adjusting nut (14A) are formed; the exhaust rocker arm assembly is by exhaust rocker arm (9); exhaust rocker arm axle (10); exhaust rocker arm spring (11); priming lever spring is hung pin (12B); adjusting screw (13B) and adjusting nut (14B) are formed; the intake and exhaust rocking arm all has a forearm (15A; 15B) with two postbrachium (16A; 16B); forearm is connected on the camshaft (3); two postbrachiums link to each other with the valve seat of honour of two intake valves or two exhaust valves by adjusting screw and adjusting nut; the inlet and exhaust valve pitman arm shaft is installed on the rocker arm support by pitman arm shaft and priming lever spring separately, and rocker arm support is installed on the cylinder head.
2, single overhead type four-valve engine according to claim 1, it is characterized in that: the firing chamber of motor (19) are radial wedge shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200335270U CN2809243Y (en) | 2005-03-17 | 2005-03-17 | Single-cylinder overhead four-valve engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200335270U CN2809243Y (en) | 2005-03-17 | 2005-03-17 | Single-cylinder overhead four-valve engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2809243Y true CN2809243Y (en) | 2006-08-23 |
Family
ID=36925428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200335270U Expired - Fee Related CN2809243Y (en) | 2005-03-17 | 2005-03-17 | Single-cylinder overhead four-valve engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2809243Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943716A (en) * | 2012-11-29 | 2013-02-27 | 河南创世电机科技有限公司 | High-power cylinder cover for universal small gasoline engine |
-
2005
- 2005-03-17 CN CNU2005200335270U patent/CN2809243Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102943716A (en) * | 2012-11-29 | 2013-02-27 | 河南创世电机科技有限公司 | High-power cylinder cover for universal small gasoline engine |
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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: 20060823 Termination date: 20110317 |