CN102121429A - Front shell of vehicle engine - Google Patents
Front shell of vehicle engine Download PDFInfo
- Publication number
- CN102121429A CN102121429A CN 201110070788 CN201110070788A CN102121429A CN 102121429 A CN102121429 A CN 102121429A CN 201110070788 CN201110070788 CN 201110070788 CN 201110070788 A CN201110070788 A CN 201110070788A CN 102121429 A CN102121429 A CN 102121429A
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- CN
- China
- Prior art keywords
- stiffening rib
- cover
- reinforcing ribs
- front shell
- outer ring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Body Structure For Vehicles (AREA)
Abstract
The invention provides a front shell of a vehicle engine. A circular table board is additionally arranged on the top of the front shell and is provided with reinforcing ribs to form region segmentation, so that the rigidity of the circular table board is enhanced and noise radiation of the surface structure of the front shell is lowered. The reinforcing ribs consist of outer ring reinforcing ribs and inner ring reinforcing ribs, wherein the outer ring reinforcing ribs are connected with the side wall of the front shell; the outer ends of a part of reinforcing ribs are connected with a front shell installation point; and all reinforcing ribs are arranged in an elliptical shape and a letter 'A' shape which are mutually staggered. Due to reasonable arrangement of the reinforcing ribs, a small quantity of materials can be used, the stiffness of the front shell of the engine is enhanced, local modal frequency is improved, the local resonance and surface radiation noise are lowered, and appearance is improved.
Description
Technical field
The present invention is and technical field of engines to be specifically related to the vehicular engine front end-cover.
Technical background
Along with market requires to improve day by day to power assembly NVH level, with the continuous increase of engine power and moment of torsion, power assembly structural strength and NVH problem are particularly outstanding.Engineering plastics are widely used in shell class part owing to be easy to moulding, and the vehicular engine front end-cover is exactly a kind of.But because of the engineering plastics Young's modulus is lower, rigidity a little less than, and engine front housing is thin shell piece, is easy to cause construct noise, is one of main contribution of engine radiation noise.The not plane of reinforcement structurally often appears in existing design, and rigidity is lower, easily causes local resonance, thereby produces bigger radiated noise in the normal working of engine process.Therefore, need a kind of mode badly and improve front end-cover local stiffness and mode, with the radiated noise that reduces to cause owing to front end-cover.
Summary of the invention
The invention provides a kind of vehicular engine front end-cover, purpose is the reasonable Arrangement stiffening rib, utilizes less material, improves the rigidity of engine front housing, and its local mode's frequency of raising reduces local resonance and Surface Radiation Noise, does not influence outward appearance simultaneously.
For solving the problems of the technologies described above, the technical solution used in the present invention is as follows:
A kind of vehicular engine front end-cover, it passes through at top increase round table surface, and stiffening rib is set on round table surface, forms Region Segmentation, improves round table surface rigidity, thereby reduces the noise radiation of front end-cover surface structure.Wherein, stiffening rib divides outer ring and inner ring two-part, and the outer ring stiffening rib links to each other with the front end-cover sidewall, and part stiffening rib outer end is connected with the front end-cover mounting points, and all stiffening ribs form elliptical shapes and letter " A " shape, and two kinds of shapes are interlaced.
The present invention since again on the front end-cover reasonable Arrangement stiffening rib, can utilize less material, improve the rigidity of engine front housing, its local mode's frequency of raising reduces local resonance and Surface Radiation Noise, beautifies outward appearance simultaneously.Adopt above structure, under and the situation that cost is constant constant, can utilize less material to satisfy design and NVH requirement in manufacturing efficiency.To the intensity simulation calculation, satisfy reliability requirement by CAE.And model frequency improves, the surface normal vibration velocity descends, radiated noise obtains descending.Test result shows, sound pressure level obtains descending too near the front end-cover, so this design gets a promotion motor NVH performance, makes design of engine components more reasonable.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Describe structure of the present invention in detail below in conjunction with accompanying drawing:
As shown in Figure 1, this front end-cover structure mainly comprises front end-cover 2 and inside and outside stiffening rib.Round table surface 8 is arranged at the top at front end-cover 2 outer surfaces, and this round table surface 8 highly is 4mm ~ 6mm on front end-cover 2 bases.4,6,7,10, eight muscle of inner ring stiffening rib at 3,5,9,13 and four arcs of outer ring stiffening rib that are provided with four arcs on the round table surface 8 form rock-steady structure on top circular table top 8, each stiffening rib height is 4mm ~ 6mm. Stiffening rib 3,5,9 outermost end in outer ring are connected in the sidewall 11 of front end-cover 2, and outer ring stiffening rib 3,9,13 and inner ring stiffening rib 6 width are 7mm ~ 13mm, are combined to form ellipticity, about the long 110mm ~ 130mm of this transverse, about the long 65mm ~ 75mm of minor axis.Outer ring stiffening rib 5 and inner ring stiffening rib 4,6,7 wide 12mm ~ 18mm form " A " shape, should " A " bottom width 65mm ~ 75mm, highly 70mm ~ 80mm.Outer ring stiffening rib 3,9 is distributed near the installation journal stirrup 1,12 of front end-cover 2 both sides.Inner fillet 14 radiuses of each stiffening rib are 1mm ~ 2mm, and outside fillet 15 is 2mm ~ 4mm.
But protection scope of the present invention is not limited to the above embodiments, and obviously, those skilled in the art can carry out various changes and distortion and do not depart from the scope of the present invention and spirit the present invention.If these changes and distortion belong in the scope of claim of the present invention and equivalent technologies thereof, then the intent of the present invention also comprises these changes and is out of shape interior.
Claims (7)
1. a vehicular engine front end-cover is characterized in that, is provided with round table surface (8) at the top of described front end-cover (2) outer surface, and on round table surface (8) stiffening rib is set.
2. vehicular engine front end-cover according to claim 1, it is characterized in that described stiffening rib is an arc, divide outer ring and inner ring two-part, the outer ring stiffening rib links to each other with the front end-cover sidewall, and has part outer ring stiffening rib to be distributed near the installation journal stirrup (1 and 12) of front end-cover sidewall.
3. vehicular engine front end-cover according to claim 1 and 2 is characterized in that described inner ring and outer ring stiffening rib join mutually, forms elliptical shape between them respectively, and inner ring and outer ring stiffening rib form letter " A " shape again jointly.
4. vehicular engine front end-cover according to claim 3 is characterized in that, described round table surface (8) highly is 4mm ~ 6mm on front end-cover (2) basis.
5. vehicular engine front end-cover according to claim 3 is characterized in that, each stiffening rib height is 4mm ~ 6mm.
6. vehicular engine front end-cover according to claim 3 is characterized in that, described bottom width 65mm ~ 75mm by inner ring and common letter " A " shape that forms of outer ring stiffening rib, height 70mm ~ 80mm.
7. vehicular engine front end-cover according to claim 3 is characterized in that, inner fillet (14) radius of described each stiffening rib is 1mm ~ 2mm, and outside fillet (15) is 2mm ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110070788 CN102121429A (en) | 2011-03-23 | 2011-03-23 | Front shell of vehicle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110070788 CN102121429A (en) | 2011-03-23 | 2011-03-23 | Front shell of vehicle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102121429A true CN102121429A (en) | 2011-07-13 |
Family
ID=44250069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110070788 Pending CN102121429A (en) | 2011-03-23 | 2011-03-23 | Front shell of vehicle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102121429A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147875A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Cover cap for timing sprocket |
| CN103161602A (en) * | 2013-03-28 | 2013-06-19 | 重庆长安汽车股份有限公司 | Correct timing cover piece of motor |
| CN107423512A (en) * | 2017-07-28 | 2017-12-01 | 广东省智能制造研究所 | A kind of light-weight design method of large-scale die-casting machine tailgate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006037777A (en) * | 2004-07-23 | 2006-02-09 | Mazda Motor Corp | Oil pan for vehicle |
| CN201031944Y (en) * | 2007-04-30 | 2008-03-05 | 成都航天橡塑件制造有限公司 | Timing belt housing |
| CN201738969U (en) * | 2010-05-31 | 2011-02-09 | 重庆长安汽车股份有限公司 | Engine oil pan |
-
2011
- 2011-03-23 CN CN 201110070788 patent/CN102121429A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006037777A (en) * | 2004-07-23 | 2006-02-09 | Mazda Motor Corp | Oil pan for vehicle |
| CN201031944Y (en) * | 2007-04-30 | 2008-03-05 | 成都航天橡塑件制造有限公司 | Timing belt housing |
| CN201738969U (en) * | 2010-05-31 | 2011-02-09 | 重庆长安汽车股份有限公司 | Engine oil pan |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103147875A (en) * | 2013-02-28 | 2013-06-12 | 奇瑞汽车股份有限公司 | Cover cap for timing sprocket |
| CN103161602A (en) * | 2013-03-28 | 2013-06-19 | 重庆长安汽车股份有限公司 | Correct timing cover piece of motor |
| CN103161602B (en) * | 2013-03-28 | 2015-10-07 | 重庆长安汽车股份有限公司 | Engine timing shell |
| CN107423512A (en) * | 2017-07-28 | 2017-12-01 | 广东省智能制造研究所 | A kind of light-weight design method of large-scale die-casting machine tailgate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110713 |