CN103047041A - Engine cylinder block - Google Patents
Engine cylinder block Download PDFInfo
- Publication number
- CN103047041A CN103047041A CN2013100150729A CN201310015072A CN103047041A CN 103047041 A CN103047041 A CN 103047041A CN 2013100150729 A CN2013100150729 A CN 2013100150729A CN 201310015072 A CN201310015072 A CN 201310015072A CN 103047041 A CN103047041 A CN 103047041A
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- main bearing
- cylinder
- cylinder block
- engine cylinder
- bearing seat
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses an engine cylinder block which comprises a cylinder block skirt portion with the section of a U-shaped structure, wherein a plurality of main bearing walls are abreast arranged in the cylinder block skirt portion of the U-shaped structure, the end surfaces of the main bearing walls are provided with main bearing bases used for supporting crankshafts and of an arched structure, and grooves are arranged on the end surfaces of the main bearing walls at the position between the main bearing bases and the cylinder block skirt portion. The engine cylinder block is provided with the grooves, when vibration generated by the main bearing bases deforms, the vibration can be reduced and dispersed at the groove positions of the main bearing walls, vibration deformation of the main bearing bases is insulated in a crankshaft box, simultaneously stress of the main bearing walls is dispersed, and stress concentration is effectively avoided. Through holes are arranged on partial main bearing walls so that gases in adjacent cylinders and below pistons flow interactively in different piston strokes, pressure of the gases is balanced, negative work done by the gases to the pistons is reduced, pump gas loss is reduced, and engine efficiency is improved.
Description
Technical field
The present invention relates to a kind of engine components of automobile, more precisely, relate to a kind of main bearing wall construction of engine cylinder-body, belong to technical field of internal combustion engines.
Background technique
The noise of engine component generation of vibration is the important sources of engine noise.In the movement process of connecting rod, the reciprocal inertia force that the to-and-fro motion such as the gas pressure that in-cylinder combustion produces and piston rod produce all will be passed to main bearing cap by connecting bar and crankshaft, cause vibration and the distortion of main bearing cap.And main bearing cap be by bolton on the cylinder body main bearing seat, main bearing cap passes to main bearing seat with vibration, then by the main bearing wall vibration is passed to the cylinder body skirt section.The vibration in cylinder body skirt section will further be passed to the oil sump that is installed on the cylinder body bottom end and be installed on other component on the skirt section.So the vibration of main bearing cap and main bearing seat be cylinder body be installed on component on the cylinder body produce vibrating noise main source.
Traditional tank design thinking is to strengthen being connected of main bearing seat and skirt section by sturdy main bearing wall, with the horizontal rigidity of reinforcement cylinder body, reduces vibration and the distortion in main bearing seat and skirt section.But such design, so that the vibration of main bearing seat can be passed to the skirt section completely, and it is concentrated to make easily main bearing wall place produce stress owing to the distortion of main bearing seat.And sturdy main bearing wall is unfavorable for the lightweight of cylinder body.
Pumping loss is the pith of engine power loss.The up gas pressure in piston base space that causes of piston reduces, and the gas of descent of piston compression piston bottom space raises pressure.Such periodicity in-cylinder pressure fluctuation makes piston additionally do negative work, and namely pumping loss has caused the useful horsepower loss of motor.
Summary of the invention
The present invention provides a kind of engine cylinder-body in order to solve problems of the prior art, and it is simple in structure, the vibration deformation of main bearing seat can be separated with the skirt section, and completely cuts off in crankcase inside, can effectively reduce noise and vibrations that motor produces.
In order to realize above-mentioned purpose, technological scheme of the present invention is: a kind of engine cylinder-body, comprise the take the shape of the letter U cylinder body skirt section of structure, cross section, be provided with side by side a plurality of main bearing walls in the cylinder body skirt section of described U-shaped structure, the end face of described main bearing wall is provided with the main bearing seat that is arch structure that holds for supports main shaft, and the position on the described main bearing wall end face between main bearing seat and cylinder body skirt section is provided with groove.
Preferably, the cross section of described groove is circular-arc.
Preferably, also be provided with main bearing cap, described main bearing cap is combined together by bolt and main bearing seat.
Preferably, described main bearing wall is provided with through hole.
Preferably, described through hole is positioned at the top of main bearing seat.
Engine cylinder-body of the present invention is provided with groove, namely the bottom of groove apart from the distance H 1 of cylinder body lower end surface greater than the distance H 2 of main bearing seat lower end surface apart from the cylinder body lower end surface.Such structural design, vibration deformation when main bearing seat produces will obtain at the groove of main bearing wall subduing and dispersion, and the vibration deformation of main bearing seat is isolated inner with crankcase, the stress that has also disperseed simultaneously the main bearing wall has been avoided concentrating of stress effectively.Improved the fatigue strength of engine cylinder-body, simultaneously, groove and main bearing seat, main bearing wall are integrated casting, be easy on the technique realize, and the setting of groove have also saved raw material, have alleviated the weight of engine cylinder-body, have reduced oil consumption.
The main bearing wall is provided with through hole, space in the cylinder of main bearing wall both sides is communicated with, thereby the gas that is in the adjacent cylinder under the piston is flowed mutually in different piston strokes, so that the gas pressure that is in the cylinder under the piston is able to equilibrium, reduced the negative work that piston is done, finally reduce the loss of pump gas, improved the efficient of motor.
Description of drawings
Sectional view after Fig. 1 shows engine cylinder-body of the present invention and main bearing cap cooperates.
Fig. 2 shows the structural representation of engine cylinder-body of the present invention.
Wherein, 1-main bearing seat; 2-main bearing wall; 3-cylinder body skirt section; The 4-main bearing cap; The 5-bolt; 6-cylinder hole; The 7-through hole; The 8-groove; The end face of 9-main bearing seat; 10-rear end of the cylinder block face.
Embodiment
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described further.
With reference to figure 1, Fig. 2, a kind of engine cylinder-body of the present invention, comprise the take the shape of the letter U cylinder body skirt section 3 of structure, cross section, be provided with side by side a plurality of main bearing walls 2 in the cylinder body skirt section 3 of described U-shaped structure, the structure that cylinder body skirt section 3 and main bearing wall 2 are formed in one, described main bearing wall 2 connects the two ends in U-shaped cylinder body skirt section 3, and provide a supporting role for bent axle, concrete structure is that the end face at the main bearing wall is provided with a main bearing seat 1 that is arch structure, main bearing seat 1 is used for installing the also main journal of supporting engines bent axle, the main shaft neck part of bent axle is positioned at main bearing seat 1, again main bearing cap 4 is contacted fastening with the end face 9 of main bearing seat 1, can be fixed together by bolt 5.So just can be with the main journal location and installation of bent axle.Position on the end face of described main bearing wall 2 between main bearing seat 1 and cylinder body skirt section 3 is provided with groove 8, also can regard main bearing wall 2 as and close on main bearing seat 1 place to its inner recess.Preferably the cross section of this inner recess is circular-arc, with reference to figure 1, namely the bottom of groove 8 apart from the distance H 1 of cylinder body lower end surface greater than the distance H 2 of main bearing seat end face 9 apart from the cylinder body lower end surface.Such structural design, vibration deformation when main bearing seat 1 produces will obtain subduing and dispersion at groove 8 places of main bearing wall 2, and the vibration deformation of main bearing seat 1 is isolated from crankcase inside, the stress that has also disperseed simultaneously main bearing wall 2 has been avoided concentrating of stress effectively.Improved the fatigue strength of engine cylinder-body, simultaneously, groove 8 is integrated casting with main bearing seat 1, main bearing wall 2, and is easy to process, and the setting of groove 8 also saved raw material, alleviated the weight of engine cylinder-body, reduced oil consumption.
With reference to figure 1, Fig. 2, engine cylinder-body of the present invention is the flywheel mounting end from rear end of the cylinder block face 10(), the main bearing wall of each grade is numbered respectively main bearing wall 25,24,23,22,21.For the inner space of avoiding crankcase directly with the atmosphere environment perforation, be arranged on the situation of motor head face for timing system, generally through hole 7 is arranged on the main bearing wall 21,22,23,24.Be arranged on the situation of motor ear end face for timing system, generally through hole 7 be arranged on the main bearing wall 22,23,24,25.Space in the cylinder of main bearing wall 2 both sides can be communicated with like this.The advantage that arranges like this is: up when No. 1 cylinder inner carrier, when No. 2 cylinder inner carriers are descending take four cylinder engine as example, the gas that No. 2 cylinder inner carriers of No. 2 descending compressions of cylinder inner carrier are following causes gas pressure to rise; The gas pressure that rises is done negative work so that the resistance of descent of piston is larger to piston.No. 1 the cylinder inner carrier is up so that No. 1 following space moment increase of cylinder inner carrier causes gas pressure to descend, and the gas pressure of decline has suction-operated to piston stroking upward, equally piston is done negative work.If there is not through hole 7, then the following gas pressure of No. 1 cylinder and No. 2 cylinder inner carriers is done periodic fluctuation always along with moving up and down of piston, and two following gases of cylinder inner carrier are done negative work to piston separately always.After adopting through hole 7 designs, space in the cylinder of main bearing wall 2 both sides is communicated with, the following high-pressure gas of No. 2 cylinder inner carriers this moment flows in No. 1 cylinder by through hole 7.Otherwise, descending along with No. 1 cylinder inner carrier, No. 2 cylinder inner carriers are up, No. 1 the following high-pressure gas of cylinder inner carrier flows to cylinder No. 2, thereby No. 1 cylinder is flowed mutually in different piston strokes from gas in No. 2 cylinders, so that the gas pressure in the cylinder is able to equilibrium, reduced the negative work that piston is done.Based on same reason, No. 3 cylinders, No. 4 following gas pressures of cylinder inner carrier are able to equilibrium, have reduced the negative work that piston is done, and have finally reduced the loss of pump gas, have improved the efficient of motor.The structure of through hole 7 has also been saved raw material simultaneously, has alleviated the weight of engine cylinder-body, has reduced oil consumption.Preferred technological scheme is: described through hole 7 is positioned at the top of main bearing seat 1, namely between cylinder hole 6 and main bearing seat 1.
The present invention is by preferred embodiment having carried out detailed explanation.Yet, by to the studying carefully of preamble, to the variation of each mode of execution with to increase also be that one of ordinary skill in the art institute is apparent.Being intended that all these variations and increasing of claimant all dropped in the scope that claim of the present invention protects.
Similar numbering refers to similar element in the whole text.For the purpose of clear, the situation that some line, layer, element, parts or feature are amplified may be arranged in the accompanying drawings.
Term used herein is only for to be illustrated specific embodiment, and it is not to be intended to limit the invention.Unless otherwise defined, all terms used herein (comprising technical term and scientific terminology) are all identical with one of ordinary skill in the art's of the present invention understanding.
Claims (5)
1. engine cylinder-body, comprise the take the shape of the letter U cylinder body skirt section of structure, cross section, be provided with side by side a plurality of main bearing walls in the cylinder body skirt section of described U-shaped structure, the end face of described main bearing wall is provided with for the main bearing seat that is arch structure that supports bent axle, and it is characterized in that: the position on the described main bearing wall end face between main bearing seat and cylinder body skirt section is provided with groove.
2. engine cylinder-body according to claim 1, it is characterized in that: the cross section of described groove is circular-arc.
3. engine cylinder-body according to claim 2, it is characterized in that: also be provided with main bearing cap, described main bearing cap is combined together by bolt and main bearing seat.
4. engine cylinder-body according to claim 1, it is characterized in that: described main bearing wall is provided with through hole.
5. engine cylinder-body according to claim 4, it is characterized in that: described through hole is positioned at the top of main bearing seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100150729A CN103047041A (en) | 2013-01-16 | 2013-01-16 | Engine cylinder block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013100150729A CN103047041A (en) | 2013-01-16 | 2013-01-16 | Engine cylinder block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103047041A true CN103047041A (en) | 2013-04-17 |
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ID=48059836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013100150729A Pending CN103047041A (en) | 2013-01-16 | 2013-01-16 | Engine cylinder block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103047041A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321187A (en) * | 2022-01-22 | 2022-04-12 | 昆明云内动力股份有限公司 | Main bearing seat structure of diesel engine cylinder body stress-relief arc groove and machining method thereof |
| CN114991987A (en) * | 2021-03-02 | 2022-09-02 | 比亚迪股份有限公司 | Crankcase, engine and vehicle |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185521A (en) * | 1996-12-19 | 1998-06-24 | 日野汽车工业株式会社 | Cylinder body |
| JP2005330925A (en) * | 2004-05-21 | 2005-12-02 | Mitsubishi Motors Corp | Bearing structure of cylinder block |
| JP2006249997A (en) * | 2005-03-09 | 2006-09-21 | Toyota Motor Corp | Cylinder block of internal combustion engine |
| CN2835605Y (en) * | 2005-10-21 | 2006-11-08 | 昆明云内动力股份有限公司 | Improved engine cylinder |
| JP2007205214A (en) * | 2006-02-01 | 2007-08-16 | Kubota Corp | Crankshaft bearing structure for multiple cylinder engine |
| CN201100177Y (en) * | 2007-11-14 | 2008-08-13 | 青年汽车集团有限公司 | Car engine gas jar body |
| CN201614984U (en) * | 2009-11-20 | 2010-10-27 | 浙江吉利汽车研究院有限公司 | Engine cylinder body |
| CN201635856U (en) * | 2009-12-21 | 2010-11-17 | 广西玉柴机器股份有限公司 | Cylinder structure of diesel engine |
| CN202065083U (en) * | 2011-04-26 | 2011-12-07 | 浙江吉利汽车研究院有限公司 | Main bearing block of vehicle air cylinder body |
| EP2407658A2 (en) * | 2010-07-15 | 2012-01-18 | Suzuki Motor Corporation | Multi-cylinder engine |
| CN102787935A (en) * | 2012-08-29 | 2012-11-21 | 安徽江淮汽车股份有限公司 | Engine cylinder body with oil and gas circulation structure and engine |
| CN203114442U (en) * | 2013-01-16 | 2013-08-07 | 安徽江淮汽车股份有限公司 | Engine cylinder block |
-
2013
- 2013-01-16 CN CN2013100150729A patent/CN103047041A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1185521A (en) * | 1996-12-19 | 1998-06-24 | 日野汽车工业株式会社 | Cylinder body |
| JP2005330925A (en) * | 2004-05-21 | 2005-12-02 | Mitsubishi Motors Corp | Bearing structure of cylinder block |
| JP2006249997A (en) * | 2005-03-09 | 2006-09-21 | Toyota Motor Corp | Cylinder block of internal combustion engine |
| CN2835605Y (en) * | 2005-10-21 | 2006-11-08 | 昆明云内动力股份有限公司 | Improved engine cylinder |
| JP2007205214A (en) * | 2006-02-01 | 2007-08-16 | Kubota Corp | Crankshaft bearing structure for multiple cylinder engine |
| CN201100177Y (en) * | 2007-11-14 | 2008-08-13 | 青年汽车集团有限公司 | Car engine gas jar body |
| CN201614984U (en) * | 2009-11-20 | 2010-10-27 | 浙江吉利汽车研究院有限公司 | Engine cylinder body |
| CN201635856U (en) * | 2009-12-21 | 2010-11-17 | 广西玉柴机器股份有限公司 | Cylinder structure of diesel engine |
| EP2407658A2 (en) * | 2010-07-15 | 2012-01-18 | Suzuki Motor Corporation | Multi-cylinder engine |
| CN202065083U (en) * | 2011-04-26 | 2011-12-07 | 浙江吉利汽车研究院有限公司 | Main bearing block of vehicle air cylinder body |
| CN102787935A (en) * | 2012-08-29 | 2012-11-21 | 安徽江淮汽车股份有限公司 | Engine cylinder body with oil and gas circulation structure and engine |
| CN203114442U (en) * | 2013-01-16 | 2013-08-07 | 安徽江淮汽车股份有限公司 | Engine cylinder block |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114991987A (en) * | 2021-03-02 | 2022-09-02 | 比亚迪股份有限公司 | Crankcase, engine and vehicle |
| CN114991987B (en) * | 2021-03-02 | 2023-11-14 | 比亚迪股份有限公司 | Crankcase, engine and vehicle |
| CN114321187A (en) * | 2022-01-22 | 2022-04-12 | 昆明云内动力股份有限公司 | Main bearing seat structure of diesel engine cylinder body stress-relief arc groove and machining method thereof |
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| 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: 20130417 |