CN102305114B - Gasoline engine and air valve rocker assembly for same - Google Patents
Gasoline engine and air valve rocker assembly for same Download PDFInfo
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- CN102305114B CN102305114B CN 201110061271 CN201110061271A CN102305114B CN 102305114 B CN102305114 B CN 102305114B CN 201110061271 CN201110061271 CN 201110061271 CN 201110061271 A CN201110061271 A CN 201110061271A CN 102305114 B CN102305114 B CN 102305114B
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- valve rocker
- exhaust valve
- inlet valve
- axle
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Abstract
The invention discloses a gasoline engine and an air valve rocker assembly for the same. An air inlet valve rocker shaft is fixedly arranged on an air inlet valve rocker; the air inlet valve rocker shaft is unidirectionally arranged on an air inlet valve rocker base in a mode of rotating along the own axial line; an air exhaust valve rocker shaft is fixedly arranged on an air exhaust valve rocker; the air exhaust valve rocker shaft is unidirectionally arranged on an air exhaust valve rocker base in a mode of rotating along the own axial line; and the air inlet valve rocker shaft and the air exhaust valve rocker shaft are upward and slantways arranged relative to a horizontal plane from outside to inside. By adopting an inclined fixed rocker structure, the air valve rocker assembly cannot be shaken in a plurality of directions during long-time use, is suitable for inclined burning chambers and guarantees a sealing effect; furthermore, the gasoline engine has lower emission and higher power; the power of the gasoline engine with the maximum power of 7.5 kW (the rotating speed is 3,060 rpm) can be increased to 7.9 kW and the emission is reduced from 8.0 g/kW.h to 6.1 g/kW.h which meets or even exceeds a standard of 8 g/kW.h in the environmental protection agency (EPA)3 stage.
Description
Technical field
The present invention relates to a kind of power engine parts and application thereof, particularly a kind of gasoline engine part and application thereof.
Background technique
Petrol engine is a kind of dynamic power machine that uses gasoline for the fuel.Partly formed by cylinder, connecting rod, gas distribution system, oil supply system, lubrication system and ignition system etc.; Cylinder head is provided with intake duct and air outlet flue, and forms the firing chamber face jointly with cylinder, thereby, belong to the parts of petrol engine outbalance.Gasoline acts as a fuel with AIR MIXTURES in the firing chamber internal combustion, produces a large amount of heats, is used for as driving energy.
The gas distribution system of petrol engine is the necessary parts that guarantee the normal operation of petrol engine, generally comprises intake valve and exhaust valve that described cylinder head is provided with, and the opening and closing of intake valve and exhaust valve are controlled respectively by driving components such as rocker arm assemblies; Described intake valve and exhaust valve are respectively equipped with the Rocker arm assembly that drives its switching.
Rocker arm assembly comprises rocker arm bracket, rocking arm and pitman arm shaft, design and installation for convenience; all adopt split-type structural between pitman arm shaft and the rocking arm, the structure of more generally using are provided with the tubular seat as rocking arm and are coated at pitman arm shaft and it can be rotatably assorted around axis, and pitman arm shaft is fixed in rocker arm bracket.This structure is because tubular seat and pitman arm shaft surface of contact are bigger, and the influence of machining accuracy, installation precision and long-time friction, multi-faceted rocking can appear behind the long-play, cause the problem that existing inlet and outlet door assembly is not closed completely, is forbidden and action has some setbacks, influence the normal operation of petrol engine.And also can there be the relatively poor problem of adaptability in the pitman arm shaft that is parallel to horizontal plane, particularly for inclined valve, existing rocking arm sense of rotation and valve event direction are inconsistent, produce moment of flexure, stressed inconsistent with traffic direction in the time of can causing valve to open and close, influence sealing effect.
Therefore, need improve existing petrol engine Rocker arm assembly, multi-faceted phenomenon of rocking can not appear during long-time the use, assurance inlet and outlet door assembly is closed the back good airproof performance, move smooth and easy, thereby guarantee the normal operation of petrol engine, the stressed and inconsistent situation of traffic direction in the time of the valve switching can not occurring guarantees sealing effect.
Summary of the invention
In view of this, the invention provides a kind of petrol engine valve swing arm assembly and petrol engine thereof, multi-faceted phenomenon of rocking can not appear during long-time the use, assurance inlet and outlet door assembly is closed the back good airproof performance, move smooth and easy, thereby guarantee the normal operation of petrol engine, the stressed and inconsistent situation of traffic direction in the time of the valve switching can not occurring guarantees sealing effect.
Petrol engine valve actuator of the present invention, comprise inlet valve rocker, exhaust valve rocker arm, inlet valve rocker seat and exhaust valve rocker arm seat, described inlet valve rocker is set with the inlet valve rocker axle, and described inlet valve rocker axle is being arranged at the inlet valve rocker seat around the mode single-degree-of-freedom that self axis rotates; Described exhaust valve rocker arm is set with the exhaust valve rocker arm axle, and described exhaust valve rocker arm axle is being arranged at the exhaust valve rocker arm seat around the mode single-degree-of-freedom that self axis rotates;
Described inlet valve rocker axle and exhaust valve rocker arm axle radially inwardly are obliquely installed to the top with respect to the cylinder head attachment face, and the angle of inclination of described inlet valve rocker axle and exhaust valve rocker arm axle is identical with the angle of inclination of corresponding intake valve and exhaust valve; It is that corresponding fulcrum forms lever construction that described inlet valve rocker and exhaust valve rocker arm form respectively with inlet valve rocker axle and exhaust valve rocker arm axle.
Further, described inlet valve rocker axle and exhaust valve rocker arm axle angle of inclination with respect to the horizontal plane adapt itself and petrol engine cylinder head firing chamber face shape; Identical with face corresponding part, petrol engine cylinder head firing chamber angle with respect to the horizontal plane with the adapt angle that refers to inlet valve rocker axle and exhaust valve rocker arm axle and horizontal plane of petrol engine cylinder head firing chamber face shape; Simple in structure, reduce arrangement space, simultaneously, be adapted to the geometrical shape of chamber structure to greatest extent, be beneficial to and guarantee that rocking arm drives harmony and the sealing of valve event.
Further, described inlet valve rocker seat and exhaust valve rocker arm seat and petrol engine cylinder head are made one, and be hatch frame upwards, described inlet valve rocker axle and exhaust valve rocker arm axle two ends correspondence penetrate the opening both sides of inlet valve rocker seat and exhaust valve rocker arm seat and cooperating around the mode that self axis rotates, opening and correspondence that described inlet valve rocker and exhaust valve rocker arm correspondence are positioned at inlet valve rocker seat and exhaust valve rocker arm seat are fixedly set in inlet valve rocker axle and exhaust valve rocker arm axle; Simple and compact for structure, conserve space, and have higher installation strength, and long service life, fabricating cost and assembly cost are low.
Further, the outside side of described inlet valve rocker seat and exhaust valve rocker arm seat hatch frame is split type bearing block structure, comprises gland and pedestal respectively, and is detachable fixedly connected between described gland and the pedestal; Adopt one-sided split type bearing block structure, be beneficial to the installation of pitman arm shaft, and reduce friction area, increase the flexibility of rocking arm motion, simple and compact for structure, conserve space.
Further, described inlet valve rocker axle and exhaust valve rocker arm axle two ends correspondence penetrate the opening both sides of inlet valve rocker seat and exhaust valve rocker arm seat and respectively the bearing shell by correspondence cooperating around the mode that self axis rotates; Adopt bearing shell to be rotatably assorted, further reduce friction, improve operation precision, running clearance strengthens can change bearing shell, is convenient to maintenance.
Further, described inlet valve rocker axle and exhaust valve rocker arm axle arrange the shaft shoulder respectively and limit its axial freedom by the opening both sides that shaft shoulder correspondence leans against inlet valve rocker seat and exhaust valve rocker arm seat; Simple in structure, can strict restrictive axial degrees of freedom.
Further, described inlet valve rocker and exhaust valve rocker arm are corresponding one-body molded with inlet valve rocker axle and exhaust valve rocker arm axle respectively; Preparation process is simple, and cost is low, and has higher intensity.
The invention also discloses a kind of petrol engine of using the petrol engine valve actuator, described petrol engine valve actuator is installed on petrol engine.
Beneficial effect of the present invention: petrol engine valve swing arm assembly of the present invention and petrol engine thereof, adopt tilting fixed rocker structure, in running, the play of its all directions or rolling momentum are little, can effectively reduce the rate of fault of rocking arm, reduce maintenance cost, also can not occur multi-faceted phenomenon of rocking, operation precision height when using for a long time; The pitman arm shaft that is obliquely installed can be adapted to the inclined valve structure and be adapted to the geometrical shape of firing chamber, be beneficial to and guarantee that rocking arm drives harmony and the sealing of valve event, also be beneficial to and guarantee valve timing, the assurance port timing, thus improve performance and reduce discharging; Petrol engine with peak output (rotating speed 3060rpm) 7.5kW is example, and power can be brought up to 7.9kW, and discharging is reduced to 6.1g/kW.h by 8.0g/kW.h, satisfies and surpass the standard of EPA3 stage 8g/kW.h; This shows that petrol engine power of the present invention improves and discharging reduces comparatively obvious; Simultaneously, assurance inlet and outlet door assembly is closed the back good airproof performance, moves smooth and easy, thereby guarantee the normal operation of petrol engine, the stressed and inconsistent situation of traffic direction in the time of the valve switching can not occurring guarantees sealing effect, thereby raise the efficiency, energy saving, and save arrangement space.
Petrol engine valve swing arm assembly of the present invention is used for petrol engine, and is applied to motorcycle or common universal machine, and energy saving, reduction consume, and saves arrangement space.
Description of drawings
Below in conjunction with drawings and Examples the present invention is further described.
Fig. 1 is structural representation of the present invention;
Fig. 2 is pitman arm shaft and the sectional view that cooperates of split type bearing block structure rocker arm bracket;
Fig. 3 be Fig. 2 along A-A to sectional drawing.
Embodiment
Fig. 1 is structural representation of the present invention, as shown in the figure: the petrol engine valve actuator of present embodiment, comprise inlet valve rocker 5, exhaust valve rocker arm 8, inlet valve rocker seat 6 and exhaust valve rocker arm seat 7, described inlet valve rocker 5 is set with inlet valve rocker axle 4, and described inlet valve rocker axle 4 is being arranged at inlet valve rocker seat 6 around the mode single-degree-of-freedom that self axis rotates; Described exhaust valve rocker arm 8 is set with exhaust valve rocker arm axle 9, and described exhaust valve rocker arm axle 9 is being arranged at exhaust valve rocker arm seat 7 around the mode single-degree-of-freedom that self axis rotates;
Described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 radially inwardly are obliquely installed to the top with respect to the cylinder head attachment face, and the cylinder head attachment face is the cylinder head at inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 places, radially refers to cylinder head radially; The angle of inclination of described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 is identical with the angle of inclination of corresponding intake valve 3 and exhaust valve 2; It is that corresponding fulcrum forms lever construction that described inlet valve rocker 5 and exhaust valve rocker arm 8 form with inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 respectively, forms tilting fixed rocker structure respectively.
In the present embodiment, described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 angle of inclination with respect to the horizontal plane adapt itself and petrol engine cylinder head firing chamber face shape; Adapt with petrol engine cylinder head firing chamber face shape and to refer to that inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 is identical with face corresponding part, petrol engine cylinder head firing chamber angle with respect to the horizontal plane with the angle of horizontal plane; Simple in structure, reduce arrangement space, simultaneously, be adapted to the geometrical shape of chamber structure to greatest extent, be beneficial to and guarantee that rocking arm drives harmony and the sealing of valve event.
In the present embodiment, described inlet valve rocker seat 6 and exhaust valve rocker arm seat 7 are made one with the petrol engine cylinder head, and be hatch frame upwards, described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 two ends correspondences penetrate the opening both sides of inlet valve rocker seat 6 and exhaust valve rocker arm seat 7 and cooperating around the mode that self axis rotates, opening and correspondence that described inlet valve rocker 5 and exhaust valve rocker arm 8 correspondences are positioned at inlet valve rocker seat 6 and exhaust valve rocker arm seat 7 are fixedly set in inlet valve rocker axle 4 and exhaust valve rocker arm axle 9; Simple and compact for structure, conserve space, and have higher installation strength, and long service life, fabricating cost and assembly cost are low.
In the present embodiment, the outside side of described inlet valve rocker seat 6 and exhaust valve rocker arm seat 7 hatch frames is split type bearing block structure, (only express the structure of the outside side of inlet valve rocker seat 6 hatch frames among the figure, the structure of the side that exhaust valve rocker arm seat 7 hatch frames are outside is identical with it to comprise gland and pedestal respectively; And pedestal 61 and the gland 61a of the structure of the outside side of inlet valve rocker seat 6 hatch frames), an outside side is for the cylinder head center line; Detachable fixedly connected between described gland and the pedestal, present embodiment adopts screw to connect, and also can adopt other modes that can realize detachable connection in the prior art certainly; Adopt one-sided split type bearing block structure, be beneficial to the installation of pitman arm shaft, and reduce friction area, increase the flexibility of rocking arm motion, simple and compact for structure, conserve space.
In the present embodiment, described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 two ends correspondences penetrate the opening both sides of inlet valve rocker seat 6 and exhaust valve rocker arm seat 7 and respectively the bearing shell by correspondence cooperating around the mode that self axis rotates, only express the outside side of inlet valve rocker seat 6 hatch frames among the figure structure of bearing shell 10 is installed, inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 and inlet valve rocker seat 6 and the exhaust valve rocker arm seat 7 bearing shell mechanism that locates that is rotatably assorted is all identical with it; Adopt bearing shell to be rotatably assorted, further reduce friction, improve operation precision, running clearance strengthens can change bearing shell, is convenient to maintenance.
In the present embodiment, described inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 arrange the shaft shoulder respectively and limit its axial freedom by the opening both sides that shaft shoulder correspondence leans against inlet valve rocker seat and exhaust valve rocker arm seat, expression inlet valve rocker axle 4 is positioned at the shaft shoulder 41 of the outside side of inlet valve rocker seat 6 hatch frames among the figure, and inlet valve rocker axle 4 is identical with it with the shaft shoulder structure that matches in exhaust valve rocker arm axle 9 and the opening both sides of inlet valve rocker seat 6 and exhaust valve rocker arm seat 7; Simple in structure, can strict restrictive axial degrees of freedom.
In the present embodiment, described inlet valve rocker 5 and exhaust valve rocker arm 8 are corresponding one-body molded with inlet valve rocker axle 4 and exhaust valve rocker arm axle 9 respectively; Preparation process is simple, and cost is low, and has higher intensity.
The invention also discloses a kind of petrol engine of using the petrol engine valve actuator, described petrol engine valve actuator is installed on petrol engine, affiliated petrol engine is applied to motorcycle or universal machine, and universal machine comprises pump, blower fan, compressor, subtracts variable-speed motor, generator etc.
Explanation is at last, above embodiment is only unrestricted in order to technological scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technological scheme of the present invention, and not breaking away from aim and the scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. petrol engine valve actuator, comprise inlet valve rocker, exhaust valve rocker arm, inlet valve rocker seat and exhaust valve rocker arm seat, it is characterized in that: described inlet valve rocker is set with the inlet valve rocker axle, and described inlet valve rocker axle is being arranged at the inlet valve rocker seat around the mode single-degree-of-freedom that self axis rotates; Described exhaust valve rocker arm is set with the exhaust valve rocker arm axle, and described exhaust valve rocker arm axle is being arranged at the exhaust valve rocker arm seat around the mode single-degree-of-freedom that self axis rotates;
Described inlet valve rocker axle and exhaust valve rocker arm axle radially inwardly are obliquely installed to the top with respect to the cylinder head attachment face, and the angle of inclination of described inlet valve rocker axle and exhaust valve rocker arm axle is identical with the angle of inclination of corresponding intake valve and exhaust valve; It is that corresponding fulcrum forms lever construction that described inlet valve rocker and exhaust valve rocker arm form respectively with inlet valve rocker axle and exhaust valve rocker arm axle.
2. petrol engine valve actuator according to claim 1, it is characterized in that: described inlet valve rocker axle and exhaust valve rocker arm axle angle of inclination with respect to the horizontal plane adapt itself and petrol engine cylinder head firing chamber face shape.
3. petrol engine valve actuator according to claim 2, it is characterized in that: described inlet valve rocker seat and exhaust valve rocker arm seat and petrol engine cylinder head are made one, and be hatch frame upwards, described inlet valve rocker axle and exhaust valve rocker arm axle two ends correspondence penetrate the opening both sides of inlet valve rocker seat and exhaust valve rocker arm seat and cooperating around the mode that self axis rotates, opening and correspondence that described inlet valve rocker and exhaust valve rocker arm correspondence are positioned at inlet valve rocker seat and exhaust valve rocker arm seat are fixedly set in inlet valve rocker axle and exhaust valve rocker arm axle.
4. petrol engine valve actuator according to claim 3, it is characterized in that: the outside side of described inlet valve rocker seat and exhaust valve rocker arm seat hatch frame is split type bearing block structure, comprise gland and pedestal respectively, detachable fixedly connected between described gland and the pedestal.
5. petrol engine valve actuator according to claim 4 is characterized in that: described inlet valve rocker axle and exhaust valve rocker arm axle two ends correspondence penetrate the opening both sides of inlet valve rocker seat and exhaust valve rocker arm seat and respectively the bearing shell by correspondence cooperating around the mode that self axis rotates.
6. petrol engine valve actuator according to claim 5 is characterized in that: described inlet valve rocker axle and exhaust valve rocker arm axle arrange the shaft shoulder respectively and limit its axial freedom by the opening both sides that shaft shoulder correspondence leans against inlet valve rocker seat and exhaust valve rocker arm seat.
7. petrol engine valve actuator according to claim 6 is characterized in that: described inlet valve rocker and exhaust valve rocker arm are corresponding one-body molded with inlet valve rocker axle and exhaust valve rocker arm axle respectively.
8. an application rights requires the petrol engine of the described petrol engine valve actuator of 1 to 7 arbitrary claim, and it is characterized in that: described petrol engine valve actuator is installed on petrol engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110061271 CN102305114B (en) | 2011-03-14 | 2011-03-14 | Gasoline engine and air valve rocker assembly for same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110061271 CN102305114B (en) | 2011-03-14 | 2011-03-14 | Gasoline engine and air valve rocker assembly for same |
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| Publication Number | Publication Date |
|---|---|
| CN102305114A CN102305114A (en) | 2012-01-04 |
| CN102305114B true CN102305114B (en) | 2013-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201110061271 Active CN102305114B (en) | 2011-03-14 | 2011-03-14 | Gasoline engine and air valve rocker assembly for same |
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| CN (1) | CN102305114B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104832237B (en) * | 2015-05-07 | 2018-02-23 | 苏州市双马机电有限公司 | Valve rocker installing mechanism and its gasoline engine |
| CN112796848A (en) * | 2021-01-08 | 2021-05-14 | 太原理工大学 | Novel double-rocker four-valve mechanism of single-cylinder diesel engine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2758492Y (en) * | 2004-12-31 | 2006-02-15 | 重庆市志成机械厂 | Rocker arm grouping of cylinder head |
| CN202001074U (en) * | 2011-03-14 | 2011-10-05 | 隆鑫通用动力股份有限公司 | Gasoline engine valve driving device and gasoline engine thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5816426U (en) * | 1981-07-27 | 1983-02-01 | 日野自動車株式会社 | Shaft supports used in internal combustion engines |
| JPH0240241Y2 (en) * | 1985-09-25 | 1990-10-26 | ||
| JP2510071Y2 (en) * | 1988-04-30 | 1996-09-11 | スズキ株式会社 | Rocker shaft support structure |
| JPH05141209A (en) * | 1991-11-18 | 1993-06-08 | Suzuki Motor Corp | Rocker shaft fitting structure four-cycle engine |
| JP3712461B2 (en) * | 1996-01-31 | 2005-11-02 | 三菱重工業株式会社 | Cylinder head of overhead valve type internal combustion engine |
| JP3365966B2 (en) * | 1998-09-08 | 2003-01-14 | 株式会社クボタ | Rocker arm support device |
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2011
- 2011-03-14 CN CN 201110061271 patent/CN102305114B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2758492Y (en) * | 2004-12-31 | 2006-02-15 | 重庆市志成机械厂 | Rocker arm grouping of cylinder head |
| CN202001074U (en) * | 2011-03-14 | 2011-10-05 | 隆鑫通用动力股份有限公司 | Gasoline engine valve driving device and gasoline engine thereof |
Non-Patent Citations (6)
| Title |
|---|
| JP平1-162005U 1989.11.10 |
| JP昭62-54205U 1987.04.03 |
| JP昭和58-16426U 1983.02.01 |
| JP特开2000-80906A 2000.03.21 |
| JP特开平5-141209A 1993.06.08 |
| JP特开平9-209826A 1997.08.12 |
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| CN102305114A (en) | 2012-01-04 |
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