CN204851463U - Novel lightweight piston - Google Patents
Novel lightweight piston Download PDFInfo
- Publication number
- CN204851463U CN204851463U CN201520537677.9U CN201520537677U CN204851463U CN 204851463 U CN204851463 U CN 204851463U CN 201520537677 U CN201520537677 U CN 201520537677U CN 204851463 U CN204851463 U CN 204851463U
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- piston
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- port
- skirt section
- port portion
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Abstract
The utility model discloses a novel lightweight piston, including the piston crown and promote mainly power side skirt section and vice thrust side skirt section, main, vice thrust side skirt section is connected through the piston face -port portion of both sides within a definite time, be formed with between piston face -port portion upper end and piston crown and subtract heavy pit. The utility model discloses can effectively alleviate piston weight to guarantee that piston structural strength satisfies the engine performance requirement.
Description
Technical field
The utility model relates to automotive engine component, is specially a kind of piston of lightweight structure.
Background technique
Modern Engine is for pursuing low-carbon environment-friendly, more and more higher to the requirement of Fuel Economy.Piston is as the movement parts of engine interior, and the reduction of its weight directly can reduce the power consumption of motor effectively, and the inertial force that reciprocating motion of the pistons is produced reduces, and improves the structural strength of piston further.So the light-weight design of the piston excelsior study hotspot of Shi Ge auto vendor always.
Current engine piston generally comprises solid piston crown 61, the piston face-port portion 62 of uniform wall thickness and the skirt section of symmetric type.As shown in Figure 1 to Figure 3, the major function of piston crown 61 is to provide piston ring rigging position and the motion of support piston ring, and the piston crown of upper end, piston face-port portion is the maximum region of piston wall thickness, adopts solid construction that piston overall weight can be caused to greatly increase.The major function in piston face-port portion 62 is support piston skirt section, is generally designed to uniform wall thickness.But according to computational analysis, support piston skirt section is mainly by face-port subordinate end and piston crown, and the design of face-port middle-end wall thickness is blocked up, is unfavorable for light-weight design.The major function of piston skirt is the to-and-fro motion of guide piston assembly, the lateral force produced in support piston reciprocatory movement.Because of the change of motor pressure of explosion of firing chamber in running, the skirt section at two ends can produce the lateral force of different size, need support larger side to power for skirt section, main thrust side 63, supporting smaller side is secondary thrust sides skirt section 64 to power.But the piston skirt of existing employing symmetrical structure design, the width in major and minor thrust sides skirt section is consistent, and face, the skirt section pressure of secondary thrust sides is very little, and the area of skirt section design is excessive, adds the weight of piston.
Summary of the invention
The purpose of this utility model is to provide a kind of Novel lightweight piston, effectively can alleviate piston weight, and ensures that piston structure intensity meets engine performance requirement.
Novel lightweight piston described in the utility model, comprise piston crown and skirt section, main thrust side and secondary thrust sides skirt section, described master, connected by the piston face-port portion of both sides between secondary thrust sides skirt section, loss of weight pit is formed between described upper end, piston face-port portion and piston crown, this loss of weight pit is by piston crown inner side surface, the pit rounding that face-port inclined-plane and transition connect piston crown inner side surface and top, face-port inclined-plane formed, described piston crown inner side surface and piston medial axis angle are 40 ~ 45 °, face-port inclined-plane and piston medial axis angle are 25 ~ 30 °, pit rounding is 2 ~ 4mm.
Preferably, described piston face-port portion to be connected face-port portion epimere and face-port subordinate section by face-port portion epimere face-port rounding with face-port subordinate section and transition is formed, described face-port portion epimere wall thickness is 2 ~ 3.5mm, face-port subordinate section wall thickness is 3 ~ 5mm, face-port subordinate section height is 5 ~ 7.5mm, and face-port rounding is 4 ~ 8mm.
Preferably, the width in described secondary thrust sides skirt section is 2/3 ~ 4/5 of skirt section, main thrust side.
Piston structure described in the utility model is simple, reliable performance, casting manufacturability are good, by adopting the design in piston crown loss of weight pit, thin wall-type piston face-port and asymmetry piston skirt section, can effectively alleviate piston weight more than 10%.
Accompanying drawing explanation
Fig. 1 is the piston plan view of prior art;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the piston worm's eye view of prior art;
Fig. 4 is the plan view of piston described in the utility model;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the structural representation in piston face-port portion described in the utility model;
Fig. 7 is the worm's eye view of piston described in the utility model.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, and following examples, only for explaining the utility model, do not form the restriction to the utility model protection domain.
Embodiment one:
Novel lightweight piston as shown in Figure 4, comprise piston crown 1 and skirt section, main thrust side 2 and secondary thrust sides skirt section 3, the piston face-port portion 4 by both sides between described major and minor thrust sides skirt section connects.
See Fig. 5, loss of weight pit 5 is formed between described piston face-port upper end, portion 4 and piston crown 1, described loss of weight pit tilts towards piston medial axis, the pit rounding 53 that this loss of weight pit connects piston crown inner side surface and top, face-port inclined-plane by piston crown inner side surface 51, face-port inclined-plane 52 and transition formed, described piston crown inner side surface 51 is 40 ° with piston medial axis angle α 1, face-port inclined-plane 52 and piston medial axis angle α 2 are 25 °, and pit rounding 53 size R1 is 2mm.
Relative to existing solid piston crown structure, above-mentioned loss of weight bowl configurations can alleviate the overall weight about 6% of piston effectively.Because loss of weight pit adopts the mode of the demoulding obliquely, and keep suitable draft angle, the volume of pit is greatly improved, ensure that the technology capability of casting is good simultaneously.
See Fig. 6, the face-port rounding 43 that described piston face-port portion 4 is connected face-port portion epimere and face-port subordinate section by face-port portion epimere 41 and face-port subordinate section 42 and transition is formed, described face-port portion epimere 41 wall thickness D1 is 2mm, face-port subordinate section 42 wall thickness D2 is 3mm, face-port subordinate section 42 height D3 is 5mm, and face-port rounding 43 size R2 is 4mm.
Above-mentioned face-port portion epimere adopts thin-walled form, thickeies in face-port subordinate section, forms stiffening rib with support piston skirt section.Relative to the face-port of existing uniform wall thickness, the piston face-port of the thin-walled form described in the present embodiment can effectively alleviate piston weight about 3%.
See Fig. 7, described skirt section 2, main thrust side width H2 and secondary thrust sides skirt section 3 width H1 is inconsistent, size according to lateral thrust is reduced secondary thrust sides skirt section width H1, the width in described secondary thrust sides skirt section is 2/3 of skirt section, main thrust side, relative to existing symmetric type piston skirt structure, above-mentioned non-symmetric piston skirt structure can effective loss of weight more than 2%.
Embodiment two:
Most is identical for the technical characteristics and embodiment of piston described in the present embodiment, and difference is only, piston crown inner side surface and piston medial axis angle α 1 are 45 °, and face-port inclined-plane and piston medial axis angle α 2 are 30 ° of pit rounding R1 is 4mm.Described face-port portion epimere wall thickness D1 is 3.5mm, and face-port subordinate section wall thickness D2 is 5mm, and face-port subordinate section height D3 is 7.5mm, and face-port rounding R2 is 8mm.The width in described secondary thrust sides skirt section is 4/5 of skirt section, main thrust side.
Claims (3)
1. a Novel lightweight piston, comprise piston crown (1) and skirt section, main thrust side (2) and secondary thrust sides skirt section (3), described master, connected by the piston face-port portion (4) of both sides between secondary thrust sides skirt section, it is characterized in that: between described upper end, piston face-port portion and piston crown, be formed with loss of weight pit (5), this loss of weight pit is by piston crown inner side surface (51), the pit rounding (53) that face-port inclined-plane (52) and transition connect piston crown inner side surface and top, face-port inclined-plane formed, described piston crown inner side surface and piston medial axis angle are 40 ~ 45 °, face-port inclined-plane and piston medial axis angle are 25 ~ 30 °, pit rounding is 2 ~ 4mm.
2. Novel lightweight piston according to claim 1, it is characterized in that: described piston face-port portion (4) to be connected face-port portion epimere and face-port subordinate section by face-port portion epimere (41) face-port rounding (43) with face-port subordinate section (42) and transition is formed, described face-port portion epimere wall thickness is 2 ~ 3.5mm, face-port subordinate section wall thickness is 3 ~ 5mm, face-port subordinate section height is 5 ~ 7.5mm, and face-port rounding is 4 ~ 8mm.
3. Novel lightweight piston according to claim 1 and 2, is characterized in that: the width of described secondary thrust sides skirt section (3) is 2/3 ~ 4/5 of skirt section, main thrust side (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520537677.9U CN204851463U (en) | 2015-07-23 | 2015-07-23 | Novel lightweight piston |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520537677.9U CN204851463U (en) | 2015-07-23 | 2015-07-23 | Novel lightweight piston |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204851463U true CN204851463U (en) | 2015-12-09 |
Family
ID=54742018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520537677.9U Expired - Fee Related CN204851463U (en) | 2015-07-23 | 2015-07-23 | Novel lightweight piston |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204851463U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017025608A1 (en) * | 2015-08-11 | 2017-02-16 | Ks Kolbenschmidt Gmbh | Piston for an internal combustion engine |
| CN108661819A (en) * | 2018-05-30 | 2018-10-16 | 宁波市鄞州德来特技术有限公司 | Lightweight low-friction piston |
| CN108884935A (en) * | 2016-03-16 | 2018-11-23 | 日立汽车系统株式会社 | The piston of internal combustion engine |
| CN109162823A (en) * | 2018-11-09 | 2019-01-08 | 广西玉柴机器股份有限公司 | The drop weight steel pistons of diesel engine |
| CN111255590A (en) * | 2020-02-11 | 2020-06-09 | 重庆长安汽车股份有限公司 | Lightweight piston, engine and car |
-
2015
- 2015-07-23 CN CN201520537677.9U patent/CN204851463U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017025608A1 (en) * | 2015-08-11 | 2017-02-16 | Ks Kolbenschmidt Gmbh | Piston for an internal combustion engine |
| US10823109B2 (en) | 2015-08-11 | 2020-11-03 | Ks Kolbenschmidt Gmbh | Piston for an internal combustion engine |
| CN108884935A (en) * | 2016-03-16 | 2018-11-23 | 日立汽车系统株式会社 | The piston of internal combustion engine |
| CN108661819A (en) * | 2018-05-30 | 2018-10-16 | 宁波市鄞州德来特技术有限公司 | Lightweight low-friction piston |
| CN109162823A (en) * | 2018-11-09 | 2019-01-08 | 广西玉柴机器股份有限公司 | The drop weight steel pistons of diesel engine |
| CN111255590A (en) * | 2020-02-11 | 2020-06-09 | 重庆长安汽车股份有限公司 | Lightweight piston, engine and car |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151209 Termination date: 20210723 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |