CN104088889B - A kind of lightweight bent axle of small displacement internal combustion engine - Google Patents
A kind of lightweight bent axle of small displacement internal combustion engine Download PDFInfo
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- CN104088889B CN104088889B CN201410316329.9A CN201410316329A CN104088889B CN 104088889 B CN104088889 B CN 104088889B CN 201410316329 A CN201410316329 A CN 201410316329A CN 104088889 B CN104088889 B CN 104088889B
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- balance weight
- bent axle
- crank arm
- lightweight
- lightweight bent
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Abstract
The present invention is suitable for engine art, provide a kind of lightweight bent axle of small displacement internal combustion engine, the lightweight bent axle includes the trunnion for being ranked sequentially connection successively, connecting rod neck, crank arm and the first balance weight, and the shoulder width W values of the crank arm are 4mm~6mm, and angle A value is 40o~60o, the crank arm includes the second balance weight and balance weight, and the balance weight is connect with the bottom of second balance weight.Pass through the optimization design of duplicate removal in the middle part of crank arm shoulder inclined-plane duplicate removal, four weight balanced designs and the second balance weight so that the weight saving of bent axle reduces bent axle cost, reduces the oil consumption of engine, improves the utilization rate of material.
Description
Technical field
The invention belongs to field of internal combustion engine more particularly to a kind of lightweight bent axles of small displacement internal combustion engine.
Background technology
Existing displacement gasoline engine bent axle does not carry out enough structures to increase the robustness of crankshaft strength to bent axle
Optimization, balance block size is big and balance weight counterweight is excessive, and the weight of integral shaft is big, cannot reach light-weighted purpose, into
And cost is increased, while causing engine consumption height.
Invention content
The present invention provides a kind of lightweight bent axle of small displacement internal combustion engine, it is intended to solve existing bent axle weight it is big, it is of high cost,
The high problem of engine consumption.
The invention is realized in this way a kind of lightweight bent axle of small displacement internal combustion engine, which includes successively
Be ranked sequentially trunnion, connecting rod neck, crank arm and the first balance weight of connection, the shoulder width W values of the crank arm be 4mm~
6mm, angle A value are 40o~60o, the crank arm includes the second balance weight and balance weight, the balance weight and described second flat
The bottom connection of weighing apparatus block.
The present invention further technical solution be：Second balance weight is in Pear-Shaped.
The present invention further technical solution be：Recessed portion, the recessed portion width B are equipped in the middle part of second balance weight
Value is 8mm~12mm, width H value 10mm~20mm, angle G1, G2 value 3 o~10o, depth D values 4mm~8mm.
The present invention further technical solution be：The shoulder width W values of first balance weight are 4mm~6mm, angle A
Value is 40o~60o。
The present invention further technical solution be：First balance weight is four pieces.
The present invention further technical solution be：The crank arm is four pieces.
The present invention further technical solution be：A diameter of 45mm~55mm of the trunnion, length be 21mm~
26mm。
The present invention further technical solution be：A diameter of 35mm~45mm of the connecting rod neck, length be 20mm~
25mm。
The beneficial effects of the invention are as follows：By in crank arm shoulder inclined-plane duplicate removal, four weight balanced designs and the second balance weight
The optimization design of portion's duplicate removal so that the weight saving of bent axle reduces bent axle cost, reduces the oil consumption of engine, improves
The utilization rate of material.The crankshaft structure of the present invention is simple, light weight, intensity are high, easy to manufacture.
Description of the drawings
Fig. 1 is the lightweight crankshaft structure schematic diagram of small displacement internal combustion engine provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram one of crank arm provided in an embodiment of the present invention；
Fig. 3 is the second balance block structure schematic diagram provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram two of crank arm provided in an embodiment of the present invention.
Specific implementation mode
Reference numeral：10- trunnion 20- connecting rod necks 30- the first balance weight 40- crank arms the second balance weights of 401-
402- balance weight 403- recessed portions
As shown in Figs 1-4, the lightweight bent axle of small displacement internal combustion engine provided by the invention, the lightweight bent axle include successively
Be ranked sequentially trunnion, connecting rod neck, crank arm and the first balance weight of connection, the shoulder width W values of the crank arm be 4mm~
6mm, angle A value are 40o~60o, the crank arm includes the second balance weight and balance weight, the balance weight and described second flat
The bottom connection of weighing apparatus block.Pass through duplicate removal in the middle part of crank arm shoulder inclined design duplicate removal, four weight balanced designs and the second balance weight
Optimization design so that the weight saving of bent axle reduces bent axle cost, reduces the oil consumption of engine, improves the profit of material
With rate.The crankshaft structure is simple, of low cost,
Second balance weight is in Pear-Shaped.
Recessed portion is equipped in the middle part of second balance weight, the recessed portion width B values are 8mm~12mm, width H values 10mm
~20mm, angle G1, G2 value 3 o~10o, depth D values 4mm~8mm.The effective weight for alleviating bent axle, improves material
Utilization rate improves the economical of fuel oil, reduces cost.
The shoulder width W values of first balance weight are 4mm~6mm, and angle A value is 40o~60o.Effectively alleviate song
The weight of axis improves the utilization rate of material, improves the economical of fuel oil, reduces cost.
First balance weight is four pieces.
The crank arm is four pieces.
A diameter of 45mm~55mm of the trunnion, length are 21mm~26mm.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (7)
1. a kind of lightweight bent axle of small displacement internal combustion engine, which is characterized in that the lightweight bent axle includes the company of being ranked sequentially successively
The shoulder width W values of trunnion, connecting rod neck, crank arm and the first balance weight connect, the crank arm are 4mm~6mm, the song
Shaft arm includes the second balance weight and balance weight, the top surface elongated surfaces of the crank arm and the top surface side to the crank arm
Included angle value A between the inclined surface formed between the upper surface of second balance weight is 40o~60o, the balance weight with it is described
The bottom of second balance weight connects；It is recessed inwardly to form gourd shape in the middle part of second balance weight.
2. lightweight bent axle according to claim 1, which is characterized in that recessed portion is equipped in the middle part of second balance weight,
Width value B between the symmetrical shaft centre line and the bottom surface of the recessed portion of second balance weight is 8mm~12mm, described recessed
The width value H of the opposite flank of concave portion is 10mm~20mm, and the depth value D of the recessed portion is 4mm~8mm.
3. lightweight bent axle according to claim 2, which is characterized in that the shoulder width W values of first balance weight are
4mm~6mm.
4. according to claim 1-3 any one of them lightweight bent axles, which is characterized in that first balance weight is four pieces.
5. lightweight bent axle according to claim 4, which is characterized in that the crank arm is four pieces.
6. lightweight bent axle according to claim 5, which is characterized in that a diameter of 45mm~55mm of the trunnion,
Length is 21mm~26mm.
7. lightweight bent axle according to claim 6, which is characterized in that a diameter of 35mm~45mm of the connecting rod neck,
Length is 20mm~25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316329.9A CN104088889B (en) | 2014-07-04 | 2014-07-04 | A kind of lightweight bent axle of small displacement internal combustion engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410316329.9A CN104088889B (en) | 2014-07-04 | 2014-07-04 | A kind of lightweight bent axle of small displacement internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104088889A CN104088889A (en) | 2014-10-08 |
| CN104088889B true CN104088889B (en) | 2018-10-16 |
Family
ID=51636632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410316329.9A Active CN104088889B (en) | 2014-07-04 | 2014-07-04 | A kind of lightweight bent axle of small displacement internal combustion engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN104088889B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6090299B2 (en) * | 2014-12-12 | 2017-03-08 | トヨタ自動車株式会社 | Crankshaft |
| JP6624171B2 (en) * | 2017-08-01 | 2019-12-25 | マツダ株式会社 | Counterweight and crankshaft provided with the counterweight |
| CN108253009A (en) * | 2017-12-28 | 2018-07-06 | 四川飞亚动力科技股份有限公司 | A kind of lightweight bent axle |
| CN109404485B (en) * | 2018-10-19 | 2021-03-16 | 淄柴动力有限公司 | Dynamic balance weight removing method for ductile iron crankshaft of medium-high speed marine diesel engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138991A (en) * | 1991-12-23 | 1992-08-18 | Ford Motor Company | Crankshaft for internal combustion engine |
| JP2011169379A (en) * | 2010-02-17 | 2011-09-01 | Isuzu Motors Ltd | Crankshaft |
| CN202001484U (en) * | 2011-03-29 | 2011-10-05 | 重庆小康汽车集团有限公司 | Light crankshaft of petrol engine |
| CN202484063U (en) * | 2012-03-14 | 2012-10-10 | 重庆小康工业集团股份有限公司 | Crank shaft of gasoline engine |
| CN203335725U (en) * | 2013-06-28 | 2013-12-11 | 力帆实业(集团)股份有限公司 | Balance shaft of engine |
| CN204025307U (en) * | 2014-07-04 | 2014-12-17 | 上汽通用五菱汽车股份有限公司 | A kind of lightweight bent axle of small displacement internal-combustion engine |
-
2014
- 2014-07-04 CN CN201410316329.9A patent/CN104088889B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5138991A (en) * | 1991-12-23 | 1992-08-18 | Ford Motor Company | Crankshaft for internal combustion engine |
| JP2011169379A (en) * | 2010-02-17 | 2011-09-01 | Isuzu Motors Ltd | Crankshaft |
| CN202001484U (en) * | 2011-03-29 | 2011-10-05 | 重庆小康汽车集团有限公司 | Light crankshaft of petrol engine |
| CN202484063U (en) * | 2012-03-14 | 2012-10-10 | 重庆小康工业集团股份有限公司 | Crank shaft of gasoline engine |
| CN203335725U (en) * | 2013-06-28 | 2013-12-11 | 力帆实业(集团)股份有限公司 | Balance shaft of engine |
| CN204025307U (en) * | 2014-07-04 | 2014-12-17 | 上汽通用五菱汽车股份有限公司 | A kind of lightweight bent axle of small displacement internal-combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104088889A (en) | 2014-10-08 |
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