CN204511691U - A kind of internal combustion engine of energy-conserving and environment-protective - Google Patents

A kind of internal combustion engine of energy-conserving and environment-protective Download PDF

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Publication number
CN204511691U
CN204511691U CN201520197792.6U CN201520197792U CN204511691U CN 204511691 U CN204511691 U CN 204511691U CN 201520197792 U CN201520197792 U CN 201520197792U CN 204511691 U CN204511691 U CN 204511691U
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China
Prior art keywords
piston
groove
combustion engine
skirt
energy
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Expired - Fee Related
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CN201520197792.6U
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Chinese (zh)
Inventor
吴波
王洪臣
王征
伊延吉
金绍江
刘旦
王桂龙
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Changchun Institute of Applied Chemistry of CAS
Changchun Institute Technology
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Changchun Institute Technology
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Priority to CN201520197792.6U priority Critical patent/CN204511691U/en
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Publication of CN204511691U publication Critical patent/CN204511691U/en
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Abstract

The utility model discloses a kind of internal combustion engine of energy-conserving and environment-protective, it is the vertical groove in axial direction offered on piston skirt surface through whole skirt section.Groove of the present utility model can store lubricant oil and abrasive dust, make piston in cylinder sleeve in reciprocatory movement lubricant oil can be used for fully, be evenly distributed, thus Decentralized Friction is hot, improve lubrication effect, reduce surface friction drag, prevent scuffing of cylinder bore and engine knock, extend the working life of piston and cylinder; Groove is consistent with piston movement direction and be that penetration type is arranged in piston skirt, make piston in movement process stressed evenly, the stress concentrating on annular groove spill port place, piston the 3rd road unloads by groove simultaneously, extends the fatigue life of piston.

Description

A kind of internal combustion engine of energy-conserving and environment-protective
Technical field
The utility model relates to a kind of energy-saving environment-friendly internal piston based on drag reduction, wear-resisting effect, can be applicable in various internal-combustion engine as petrol engine, diesel engine.
Background technique
Automobile be requisitely in people's daily life to ride instead of walk, traffic, means of transportation.Nowadays global energy-saving and emission-reduction, control haze anti-soil overall background under, the development and popularization of new-energy automobile becomes top priority, but the imperfection of its auxiliary facility and fancy price make it complete universal needs 8 ~ 10 years.Internal-combustion engine is the power source of automobile, is also the main source of automobile harmful exhaust emissions.Prove in combustion in IC engine energy, have 10% ~ 20% to consume in mechanical loss through multinomial research, and have 45% ~ 65% energy ezpenditure in mechanical loss in the friction pair of piston, piston ring and cylinder.Consider huge internal-combustion engine use amount, even if the frictional loss of piston-cylinder liner system reduced very by a small margin, also can produce considerable influence to minimizing energy consumption and environmental protect.Simultaneously using easily processing, the energy-saving environment-friendly internal piston of low cost as the excessive product before new-energy automobile is popularized, prospect is huge.
Summary of the invention
The purpose of this utility model be reduce internal-combustion engine in piston and cylinder sleeve acting process because of fricative mechanical power loss, a kind of internal combustion engine of the energy-conserving and environment-protective based on drag reduction, wear-resisting effect is provided.
A lot of species in living nature are defining the Non-smooth surface form of drag reduction through the survival of the fittest of 10000000 year and evolution.Shell, with the striped form on its surface, intactly in silt underwashing severe for a long time protects software in shell.Due in silt and current erosion process, it is consistent with convex ridge direction that shell body surface shape makes it rotate to fluid, therefore its shell table wear process is similar to piston skirt.The drag reduction of shell surface, wear-resisting striated structure are applied to the main friction pairs in internal-combustion engine by the utility model first---on piston skirt.Find to be machined in the lubricant oil having low speeds flow in the groove on high-speed motion piston by test and finite element analysis, more slower close to groove low side lubricant oil flow velocity, thus lubricant oil is stored in rich oil situation low groove, the lubricant oil stored in weary oily situation low groove supplements supply frictional interface, improves lubricating condition.Effectively prevent the generation of scuffing of cylinder bore, detonation phenomenon, extend the working life of piston and cylinder.
The utility model, by changing the mode of piston skirt configuration of surface, improves lubricating condition between piston skirt and cylinder sleeve, reduces surface friction drag, and unloading piston skirt concentrated stress, improves piston lubrication effect to reach, and extends the object in piston and cylinder working life.
The utility model is the vertical groove in axial direction offered on piston skirt surface through whole piston skirt.
Piston skirt between described vertical groove offers through hole.
Described through hole one row longitudinal arrangement is between the vertical groove of two row.
Described vertical groove width is alternate.
The sectional shape of described vertical groove is rectangle or triangle or circular arc.
The area of described vertical groove accounts for 7 ~ 23% of piston skirt bearing area, and the degree of depth of vertical groove is less than 40% of piston skirt thickness.
The diameter of described through hole is 60 ~ 70% of vertical recess width, and the spacing of the adjacent through-holes often in row through hole is 13 ~ 15% of piston skirt axial length
Described vertical groove being distributed as all or local on piston skirt surface.
The utility model can be applicable in various internal-combustion engine as petrol engine, diesel engine.
Technique effect of the present utility model is:
Groove of the present utility model can store lubricant oil and abrasive dust, make piston in cylinder sleeve in reciprocatory movement lubricant oil can be used for fully, be evenly distributed, thus Decentralized Friction is hot, improve lubrication effect, reduce surface friction drag, prevent scuffing of cylinder bore and engine knock, extend the working life of piston and cylinder; Groove is consistent with piston movement direction and be that penetration type is arranged at piston skirt, make piston in movement process stressed evenly, the stress concentrating on annular groove spill port place, piston the 3rd road unloads by groove simultaneously, extends the fatigue life of piston.
Accompanying drawing explanation
Fig. 1 is first embodiment's plan view of the present utility model.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is second embodiment's plan view of the present utility model, has through hole between groove.
Fig. 4 is the 3rd embodiment's plan view of the present utility model, has narrow groove between wide groove.
Fig. 5 piston skirt sectional view.
Fig. 6 is the piston skirt sectional view of the second embodiment.
Fig. 7 is the piston skirt sectional view of the 3rd embodiment.
Fig. 8 is the schematic diagram of groove state triangular in shape.
The schematic diagram of Fig. 9 to be groove be circular arc state.
The long schematic diagram of skirt in Figure 10 first embodiment.
The sectional view of Figure 11 first embodiment, the display degree of depth of groove, width and spacing and skirt thick.
The long schematic diagram of skirt in Figure 12 second embodiment.
The sectional view of Figure 13 second embodiment, display depth of groove, width, spacing, through-hole diameter and skirt is thick.
The long schematic diagram of skirt in Figure 14 the 3rd embodiment.
The sectional view of Figure 15 the 3rd embodiment, display wide groove and narrow depth of groove, width, spacing and skirt thick.
In figure: 1-piston skirt; The vertical groove 2 of 2-; 3-through hole; The vertical wide groove of 4-; The vertical narrow groove 5 of 5-; T-skirt is thick; L-skirt is long; H-groove depth or wide groove groove depth; S-pitch of grooves or wide groove pitch of grooves; W-well width or wide groove well width; D-through-hole diameter; The narrow groove groove depth of h1-; The narrow groove well width of w1-.
Embodiment
As shown in Figure 1, Figure 2 with shown in Fig. 5, the utility model is the vertical groove 2 in axial direction offered on piston skirt 1 surface through whole piston skirt 1.
As shown in Figure 2 and Figure 6, the utility model is the vertical groove 2 in axial direction offered on piston skirt 1 surface through whole piston skirt 1, and the piston skirt 1 between vertical groove 2 offers through hole 3.
As shown in figs. 4 and 7, the utility model is the vertical wide groove 4 in axial direction offered on piston skirt 1 surface through whole piston skirt 1, and piston skirt 1 surface between vertical wide groove 4 in axial direction offers the vertical narrow groove 5 through whole piston skirt 1.
As shown in Fig. 5, Fig. 6 and Fig. 7, the sectional shape of vertical groove 2, vertical wide groove 4 and vertical narrow groove 5 is rectangle.
As shown in Figure 8, vertical groove 2, vertical wide groove 4 and vertical narrow groove 5 sectional shape can be triangle.
As shown in Figure 9, vertical groove 2, vertical wide groove 4 and vertical narrow groove 5 sectional shape can be circular arc.
The area of vertical groove 2 or vertical wide groove 4 and vertical narrow groove 5 accounts for 7 ~ 23% of piston skirt bearing area, and the degree of depth of vertical groove 2 or vertical wide groove 4 and vertical narrow groove 5 is less than 40% of piston skirt 1 thickness.
As shown in Figure 3 and Figure 6, through hole 3 one row longitudinal arrangement is between the vertical groove 2 of two row; The diameter of described through hole 3 is 60 ~ 70% of vertical groove 2 width, and the spacing of the adjacent through-holes 3 often in row through hole is 13 ~ 15% of piston skirt 1 axial length.
Described vertical groove 2 or vertical wide groove 4 and vertical narrow groove 5 being distributed as all or local on piston skirt 1 surface.
The utility model can be applicable in various internal-combustion engine as petrol engine, diesel engine.Its usage mode, method are with common standard piston, and without Special use requirement, concrete size adjusts according to piston skirt size.
Feature of the present utility model is the recess formation on piston skirt surface.For Jetta XL-2V motor car engine, on piston skirt 1, in axial direction processing runs through the vertical groove 2 in whole skirt section, vertical groove 2 piston skirt distribution area account for skirt surface long-pending 7 ~ 23%, the degree of depth is less than 40% of piston skirt thickness, and the distribution of its vertical groove 2 or through hole 3 is see the first embodiment and the second embodiment.In internal combustion engine bench test and finite element analysis, with the internal combustion engine of recess formation, first can store lubricant oil and improve lubricating condition between piston skirt and cylinder sleeve; Secondly can reduce surface friction drag, Decentralized Friction heat, on the basis of lightweight piston, reduce inertial force; Again can unload piston skirt concentrated stress.Therefore improve the lubrication effect of piston, reduce surface friction drag, prevent scuffing of cylinder bore and engine knock, extend the working life of piston and cylinder.The utility model is to piston without Special use requirement, and the internal-combustion engine used can drag reduction, wear-resisting, improves mechanical efficiency.
Build motor car engine cold test platform in key lab of Jilin University's engineering bionical ministry of education, stand test has been carried out to the piston in the utility model, to investigate using effect of the present utility model.Data are as follows:
Durability wear test is carried out on XL-2V car combustion engine; Piston external diameter: 80.985mm; Skirt section thickness: 2.4mm; Skirt section length: 35.16mm; Piston material: aluminum alloy; Test period: 500 hours; Nominal power: 80kW/6000r/min; Test room temperature: 20 DEG C.
Under same test conditions, consider the error of each disassembling and assembling engine, put into three pistons with recess formation in four cylinders in each test and a common standard piston is tested.According to the dimensional conditions of XL-2V car combustion engine piston and the condition of machined grooves form, for the piston of the fluted form of rectangular recess processing belt.Depth of groove equals recess width.Have the arrangement of through hole between groove, the first row centerline hole distance piston tip distance is 24mm, and uniform 6 row in hole, line space is 5mm.Groove column pitch, from piston tip, with piston radial central axis for the center of circle, arranges pitch of grooves with angle form.Be with reeded piston test scheme, refer to table 1, table 2 and table 3.The parameter of vertical groove 2, through hole 3, vertical wide groove 4 and vertical narrow groove 5 is as shown in Figure 10 to Figure 15.
Table 1 is with recess formation piston skirt depth of groove (mm)
Table 2 is with recess formation piston skirt flute pitch (°)
Table 3 is with recess formation piston test scheme
Wear extent detects and obtains by weighing to piston before and after test, and peak output was detected each cylinder by test initial stage and latter stage.Power loss rate be the test initial stage and latter stage changed power difference and the ratio of initial stage power.Wear rate more novel open piston wear resistance is better, and power contrast's percentaeg is just (bearing) the reeded piston of band higher than standard piston working efficiency (low) is described.Test result refers to table 4, table 5 and table 6.
Table 4 first group of piston test result
Table 5 second group of piston test result
Table 6 the 3rd group of piston test result
Drawn by comparative test result, the utility model can make the maximum raising 2% of piston wear amount decreased average 36%, power, thus improves lubrication effect between piston and cylinder sleeve, reduces surface friction drag, extends internal-combustion engine life-span.

Claims (8)

1. an internal combustion engine for energy-conserving and environment-protective, is characterized in that: be the vertical groove (2) in axial direction offered on piston skirt (1) surface through whole piston skirt.
2. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 1, is characterized in that: the piston skirt (1) between described vertical groove (2) offers through hole (3).
3. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 2, is characterized in that: described through hole (3) row longitudinal arrangement is between the two vertical groove of row (2).
4. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 3, it is characterized in that: the diameter of described through hole (3) is 60 ~ 70% of vertical groove (2) width, the spacing of the adjacent through-holes (3) often in row through hole is 13 ~ 15% of piston skirt (1) portion axial length.
5. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 1, is characterized in that: described vertical groove (2) width is alternate.
6. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 1, is characterized in that: the sectional shape of described vertical groove (2) is rectangle or triangle or circular arc.
7. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 1, it is characterized in that: the area of described vertical groove (2) accounts for 7 ~ 23% of piston skirt bearing area, the degree of depth of vertical groove (2) is less than 40% of piston skirt (1) portion thickness.
8. the internal combustion engine of a kind of energy-conserving and environment-protective according to claim 1, is characterized in that: described vertical groove (2) being distributed as all or local on piston skirt (1) surface.
CN201520197792.6U 2015-04-03 2015-04-03 A kind of internal combustion engine of energy-conserving and environment-protective Expired - Fee Related CN204511691U (en)

Priority Applications (1)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763550A (en) * 2015-04-03 2015-07-08 长春工程学院 Energy-saving and environmentally-friendly piston of internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104763550A (en) * 2015-04-03 2015-07-08 长春工程学院 Energy-saving and environmentally-friendly piston of internal combustion engine

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C14 Grant of patent or utility model
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150729

Termination date: 20170403

CF01 Termination of patent right due to non-payment of annual fee