CN204283652U - A kind of combination relief piston based on elasticity noise reduction impact resistance head gasket - Google Patents
A kind of combination relief piston based on elasticity noise reduction impact resistance head gasket Download PDFInfo
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- CN204283652U CN204283652U CN201420763206.5U CN201420763206U CN204283652U CN 204283652 U CN204283652 U CN 204283652U CN 201420763206 U CN201420763206 U CN 201420763206U CN 204283652 U CN204283652 U CN 204283652U
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- head gasket
- noise reduction
- impact resistance
- circular hole
- cylinder
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Abstract
The utility model discloses a kind of combination relief piston based on elasticity noise reduction impact resistance head gasket, relate to a kind of combination relief piston.Between cylinder cap and cylinder body, be provided with elasticity noise reduction impact resistance head gasket, be made up of the upper sealing gasket connected successively, head gasket main body and lower seal pad; Head gasket main body comprises spring steel plate, circular hole, Elastic Steel pawl, mounting hole and water channel hole; The middle part of spring steel plate is provided with circular hole, the periphery of circular hole is provided with Elastic Steel pawl symmetrically, the outside of circular hole is provided with mounting hole and water channel hole.The utility model is very large to engine thermal efficiency and torque influence, and the petrol engine thermal efficiency can be made to improve about 7%, and the diesel engine thermal efficiency can be made to improve about 5%; In the regulatable situation of pressure adjusting spring elastic force, can all advantages of simultaneously compatible combinations relief piston, do not affect the performance of the external additional mechanism providing additional operation of the motor such as effect such as turbosupercharging and stratified mixture combustion yet.
Description
Technical field
The utility model relates to a kind of combination relief piston, particularly relates to a kind of combination relief piston based on elasticity noise reduction impact resistance head gasket.
Background technique
The applying date of the application for a patent for invention " combination relief piston " (ZL201410204117.1) of the applicant and utility model patent " a kind of combination relief piston " (ZL201420248207.6) is 2014-05-15.
Combination relief piston comprises cylinder (1), outer piston (2), pressure adjusting spring (3), inner carrier (4), wrist pin (5), jump ring (6) and connecting rod (7); Its position and annexation are: in cylinder (1), be provided with outer piston (2), along the center line of cylinder (1), outer piston (2), pressure adjusting spring (3), inner carrier (4), wrist pin (5) are connected successively with connecting rod (7); Outer piston (2) inwall be provided with jump ring (6) below.
This invention can adjusting cylinders pressure maximum and maximum temperature, plays a protective role to component; Realize the compression ignite of petrol engine by the simplest structure, overcome the shortcoming that petrol engine is numerous; Detonation harm when utilizing the elastic characteristic of spring to solve high compression ratio, effectively uses detonation; Due to the raising of empty compression ratio, make the increased flame speeds of combustion gas, effective speed range is expanded.
Due to structure and spatial constraints and technology immature, have following area for improvement:
1, the elasticity of pressure adjusting spring exists with certain steady state value, can not with engine operating condition load variations, pressure adjusting spring elastic force regulation and control difficulty is large, be difficult to the work requirements meeting motor, therefore pressure adjusting spring also has very large development and room for improvement, though gas spring can meet engine demand, due to piston coupling structure and drive manner, practical development difficulty is large;
2, location cotter way is lacked between interior outer piston, some motor in order to form specific cross-ventilation in firing chamber, be exactly the layout of inlet and exhaust valve in addition, often require that piston-top surface needs corresponding shape, therefore to corresponding motor, just need consideration to be provided with corresponding cotter way between interior outer piston and solve this problem;
3, interior outer piston is due to relative movement, needs good lubrication, and for cylinder body not having the motor of fitting machine oil nozzle then require fitting machine oil nozzle, be secondly that crankcase internal air pressure there will be corresponding pulsation, waste air ventilation mechanism will take corresponding measure;
4, combine owing to focusing on the regulable control to pressure and temperature before relief piston, promote remarkable not in working procedure to engine thermal efficiency, adopting the raising of compression ratio and emerging technology has larger dependence.
In addition, former head gasket is a kind of sealing gasket connecting cylinder cap and cylinder body, comprises the sealing gasket such as metal or asbestos.
Summary of the invention
The purpose of this utility model is exactly in order to compatibility existing " combination relief piston " all advantages and significantly improves the thermal efficiency, improves, provide a kind of combination relief piston based on elasticity noise reduction impact resistance head gasket to combination relief piston.
The purpose of this utility model is achieved in that
Comprise cylinder, outer piston, pressure adjusting spring, inner carrier, wrist pin, jump ring and connecting rod;
Its position and annexation are: in cylinder, be provided with outer piston, and along the center line of cylinder, outer piston, pressure adjusting spring, inner carrier, wrist pin are connected successively with connecting rod; Outer piston inwall be provided with jump ring below;
Elasticity noise reduction impact resistance head gasket is provided with between cylinder cap and cylinder body.
The utility model has the following advantages and good effect:
1, very large to engine thermal efficiency and torque influence, the petrol engine thermal efficiency can be made to improve about 7%, the diesel engine thermal efficiency can be made to improve about 5%;
2, in the regulatable situation of pressure adjusting spring elastic force, can all advantages of simultaneously compatible combinations relief piston, do not affect the performance of the external additional mechanism providing additional operation of the motor such as effect such as turbosupercharging and stratified mixture combustion yet.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of elasticity noise reduction impact resistance head gasket 8;
Fig. 3 is the structural representation of head gasket main body 8.0.
In figure:
1-cylinder; 2-outer piston; 3-pressure adjusting spring; 4-inner carrier;
5-wrist pin; 6-jump ring; 7-connecting rod;
8-elasticity noise reduction impact resistance head gasket,
8.0-head gasket main body,
8.01-spring steel plate,
8.02-circular hole,
8.03-Elastic Steel pawl,
8.04-mounting hole,
8.05-water channel hole and oil channel hole;
8.1-upper sealing gasket;
8.2-lower seal pad.
Embodiment
Describe in detail below in conjunction with drawings and Examples:
One, structure
1, overall
As Fig. 1, the utility model comprises cylinder 1, outer piston 2, pressure adjusting spring 3, inner carrier 4, wrist pin, jump ring 6 and connecting rod 7; Its position and annexation are: in cylinder 1, be provided with outer piston 2, and along the center line of cylinder 1, outer piston 2, pressure adjusting spring 3, inner carrier 4, wrist pin 5 are connected successively with connecting rod 7; Outer piston 2 inwall be provided with jump ring 6 below;
Elasticity noise reduction impact resistance head gasket 8 is provided with between cylinder cap and cylinder body.
2, the structure of the elasticity noise reduction impact resistance head gasket 8 of new displacement
As Fig. 2, elasticity noise reduction impact resistance head gasket 8 is made up of the upper sealing gasket 8.1 connected successively, head gasket main body 8.0 and lower seal pad 8.2.
As Fig. 3, described head gasket main body 8.0 comprises spring steel plate 8.01, circular hole 8.02, Elastic Steel pawl 8.03, mounting hole 8.04 and water channel hole and oil channel hole 8.05;
The middle part of spring steel plate 8.01 is provided with circular hole 8.02, is provided with Elastic Steel pawl 8.03 symmetrically at the periphery of circular hole 8.02, the outside of circular hole 8.02 is provided with mounting hole 8.04, water channel hole and oil channel hole 8.05.
Spring steel plate 8.01 is made up of Steel Spring Plate;
Elastic Steel pawl 8.03 tilts to piston direction, and high temperature resistant partially flexible material suitably can be inlayed in the pawl face of tilting, reduces to slacken outer piston as far as possible and contacts sound collision strength with steel pawl;
The layout of Elastic Steel pawl 8.03 also will have specific rule, main layout cylinder bi-side, not that to be arranged in surrounding be because the general distance of operated adjacent cylinder is less, due to by the continuous punching press of piston after layout steel pawl, easily make the buckling deformation of cylinder block and head surface of contact, cause cylinder seal bad, two-side elastic steel pawl 8.03 one-tenth horizontal symmetrical are arranged, it is also very exquisite that Elastic Steel pawl 8.03 tilts radian, mutually intersects from outside to inside, from high to low.
The structure shape of upper sealing gasket 8.1 and lower seal pad 8.2 is with spring steel plate 8.01, but nonelastic steel pawl, be made up of stalloy;
Upper sealing gasket 8.1, between head gasket main body 8.0 and lower seal pad 8.2 with rivet interlacement or bonding with glue.
Outer piston 2 and Elastic Steel pawl 8.03 contact segment need to inlay hard rigid material, mainly in order to strengthen the intensity of outer piston 2 colliding part, the change simultaneously reducing outer piston 2 weight keeps the light and handy of outer piston, outer piston 2 will meet the Operation Conditions of motor relative to the compressible stroke of inner carrier 4 simultaneously, elastic force basic demand for pressure adjusting spring 3 be equal each cylinder combustion gas maximum combustion pressure (the elastic force of pressure adjusting spring 3 also do not replaced by gas spring or spring force also do not reach adjustable controlled time, explain use for this combination relief piston working principle at present just separately).The free travel of outer piston 2, inner carrier 4 and pressure adjusting spring 3 will meet the operating conditions of this new structure and improve to some extent.
Working mechanism:
The utility model is the combustion chamber volume change caused by crank angle change, and mixture combustion process, in conjunction with gas volume and temperature and pressure relation each other, and the scheme summed up.
Compression stroke and expansion stroke: from crank angle, crankshaft operation one week is 360 degree, and 0 degree to 180 degree is expansion stroke, and 180 degree is compression stroke to 360, for bent axle 0 degree be top dead center, 180 degree is lower dead center.
Be piston top dead center for crankshaft top dead center motor in the past, bent axle lower dead center is piston lower dead center.
Here unlike employing combination relief piston, utilize the feature of piston elastic connection inside and outside combination relief piston and it is improved, then realizing following working mechanism in conjunction with elasticity noise reduction impact resistance head gasket.
Motor compression and expansion stroke working condition as follows;
Compression stroke, bent axle is in lower dead center, in combination relief piston, outer piston is in ultimate range, interior outer piston is all in lower dead center, along with the running of bent axle, when crankshaft operation contacts to combining relief piston outer piston time 355 degree of plus-minuss about 5 degree i.e. budc 25 degree of plus-minuss 5 degree (getting budc 25 degree be here basic parameter and ignore the Volume Changes that elasticity noise reduction impact resistance head gasket pawl facial disfigurement causes) with elasticity noise reduction impact resistance head gasket pawl face, outer piston reaches top dead center, now bent axle remain in operation outer piston be obstructed keep motionless, inner carrier continues motion compresses pressure adjusting spring with crankshaft operation, when crankshaft operation to top dead center that is 0 degree time, outer piston is still at top dead center, inner carrier reaches top dead center.
Expansion stroke, bent axle is in top dead center and remains in operation, outer piston keeps motionless, pressure adjusting spring stretches, inner carrier moves down with crankshaft operation, when crankshaft operation 25 degree of corners, outer piston still reaches maximum value at top dead center and with the distance of inner carrier, this time is exactly mixture combustion outburst best period, subsequently bent axle remain in operation interior outer piston keep ultimate range, in company with the Operative movement of bent axle, exhaust stroke with that, then be aspirating stroke, the same compression stroke of relief piston motion conditions is combined in exhaust stroke, the same expansion stroke of motion conditions of relief piston is combined in aspirating stroke.
Outer piston 2 and the elasticity noise reduction impact resistance cylinder liner of this combination relief piston tilt Elastic Steel pawl 8.03 contact process, first contact be tilt the highest and at outermost four the Elastic Steel pawls 8.03 of same plane, then Elastic Steel pawl 8.03 is depressed, contact next group again near four outermost, at conplane Elastic Steel pawl 8.03, pressure contacts the 3rd group again, the rest may be inferred, finally tilt minimum Elastic Steel pawl 8.03 in the middle of contact, until when all Elastic Steel pawls 8.03 force down predetermined altitude, outer piston 2 keeps static, the difference of height often organized between Elastic Steel pawl 8.03 will experimentally draw noise control effect to decide apart from the concrete distance of about about 0.15mm, when outer piston leaves, order is contrary from inside to outside, be separated successively, Elastic Steel pawl 8.03 is returned to original height, subsequent work is met to circulate.
Following results is drawn from the working procedure of compression stroke and expansion stroke;
1, crankshaft operation is after budc between 25 degree of corners, outer piston remains state of rest, combustion chamber volume remains unchanged, equivalent release energy (energy loss disregarding frictional loss and pressurized air heat transfer loss and spring distortion) of pressure adjusting spring compression institute energy requirement, does not that is have energy loss in this section of process in the meantime.
2, firing chamber minimum volume remains unchanged between 25 degree of corners after budc, combustion chamber volume in this process and the ratio of maximum cylinder volume are that (quote compression ratio is here provide best pre-combustion temperatures and premixing space for mixed gas and better control mixture combustion process to compression ratio, spark ignition type petrol engine compression ratio about 16 to 1, diesel engine compression ratio is about 22 to 1, be not suitable for the compression ratio adopted in the past, all needing to increase just can reach good burst).
3, burning outburst Best Times puts off until 25 crank angle degrees is no longer top dead center (theoretical value), the best theoretical time of burning outburst can be that top dead center is write music between axle to 25, but need higher gaseous-pressure owing to overcoming pressure adjusting spring, and acting ability is not obvious, radiation loss is comparatively large, pressure adjusting spring elastic force also do not reach adjustable controlled before with 25 crank angle degrees for benchmark.
4, because best combustion explosion time postpones till 25 crank angle degrees, and firing chamber has less space when 25 crank angle degrees, bent axle and connecting rod have comparatively mitre (there is a big difference compared to during top dead center for power arm), that is piston possesses maximum impetus, and bent axle possesses good acting ability, this can allow engine thermal efficiency and moment of torsion have very large lifting.
It is below the problem that should be noted that;
1, because outer piston needs the strong point, collision can be produced and cause noise and damage component, need to pay close attention to and improve, secondly need to add sound arrester outward at motor.
2, owing to can not reduce or remit due to pressure adjusting spring, and link is more between piston and bent axle, and amount of movement should not adopt greatly gas spring easily to produce sealing problem, and mechanical spring elastic force regulates difficulty very large, very troublesome in these areas, also there is very large problem in follow-up exhaust emissions process, reduce clearly because acting ability strengthens discharging waste gas temperature, conventional three-way catalyst converter no longer may be applicable to waste gas treatment problem.
3, distribution timing mechanism needs supporting improvement, and variation firing time of diesel engine fuel injecting control data and petrol engine is very large, and directly can not apply mechanically former data, and former data can only make reference use, and workload is very large.
Claims (2)
1. based on a combination relief piston for elasticity noise reduction impact resistance head gasket,
Comprise cylinder (1), outer piston (2), pressure adjusting spring (3), inner carrier (4), wrist pin (5), jump ring (6) and connecting rod (7); Its position and annexation are: in cylinder (1), be provided with outer piston (2), and along the center line of cylinder (1), outer piston (2), pressure adjusting spring (3), inner carrier (4), wrist pin (5) are connected successively with connecting rod (7); Outer piston (2) inwall be provided with jump ring (6) below;
It is characterized in that:
Elasticity noise reduction impact resistance head gasket (8) is provided with between cylinder cap and cylinder body.
2., by combination relief piston according to claim 1, it is characterized in that:
Described elasticity noise reduction impact resistance head gasket (8) is made up of the upper sealing gasket (8.1) connected successively, head gasket main body (8.0) and lower seal pad (8.2);
Head gasket main body (8.0) comprises spring steel plate (8.01), circular hole (8.02), Elastic Steel pawl (8.03), mounting hole (8.04) and water channel hole (8.05);
The middle part of spring steel plate (8.01) is provided with circular hole (8.02), is provided with Elastic Steel pawl (8.03) symmetrically at the periphery of circular hole (8.02), be provided with mounting hole (8.04) and water channel hole (8.05) in the outside of circular hole (8.02);
Described upper sealing gasket (8.1) is identical with head gasket main body (8.0) with the structure shape of lower seal pad (8.2), but nonelastic steel pawl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420763206.5U CN204283652U (en) | 2014-12-08 | 2014-12-08 | A kind of combination relief piston based on elasticity noise reduction impact resistance head gasket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420763206.5U CN204283652U (en) | 2014-12-08 | 2014-12-08 | A kind of combination relief piston based on elasticity noise reduction impact resistance head gasket |
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| Publication Number | Publication Date |
|---|---|
| CN204283652U true CN204283652U (en) | 2015-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420763206.5U Expired - Fee Related CN204283652U (en) | 2014-12-08 | 2014-12-08 | A kind of combination relief piston based on elasticity noise reduction impact resistance head gasket |
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| Country | Link |
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| CN (1) | CN204283652U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564403A (en) * | 2014-12-08 | 2015-04-29 | 陈光明 | Combined pressure regulating piston based on elastic silencing and impact-resistant cylinder gasket |
-
2014
- 2014-12-08 CN CN201420763206.5U patent/CN204283652U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564403A (en) * | 2014-12-08 | 2015-04-29 | 陈光明 | Combined pressure regulating piston based on elastic silencing and impact-resistant cylinder gasket |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150422 Termination date: 20171208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |