CN202611899U - Reinforced cylinder sleeve for motorcycle engine - Google Patents
Reinforced cylinder sleeve for motorcycle engine Download PDFInfo
- Publication number
- CN202611899U CN202611899U CN 201220233202 CN201220233202U CN202611899U CN 202611899 U CN202611899 U CN 202611899U CN 201220233202 CN201220233202 CN 201220233202 CN 201220233202 U CN201220233202 U CN 201220233202U CN 202611899 U CN202611899 U CN 202611899U
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- wall
- groove
- cylinder body
- auxiliary section
- body auxiliary
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Abstract
The utility model discloses a reinforced cylinder sleeve for a motorcycle engine, which comprises a cylinder body matching part and a skirt part connected with the lower end of the cylinder body matching part, wherein the outer diameter of the cylinder body matching part is larger than that of the skirt part, a groove which axially extends and is used for abdicating a through bolt is arranged on the side wall of the cylinder body matching part, a thin wall part is formed between the groove and the inner wall of the cylinder body matching part, two sides of the groove are respectively provided with a convex wall which is protruded out of the outer wall of the cylinder body matching part, the convex walls axially extend, and the surfaces of the convex walls, which are adjoining to the groove, are connected with the edge of the groove. According to the reinforced cylinder sleeve, the rigidity of the thin wall part can be obviously improved, the deformation of the thin wall part can be avoided, the problem such as the abnormal attrition and the like caused by the deformation of the cylinder sleeve can be effectively eliminated, and the rigidity of the thin wall part of the cylinder sleeve can be enhanced; and the mode that the cylinder diameter is enlarged by enlarging the center distance of the through bolt of a box body in the prior art is abandoned, so that the problems of the miniaturization, the serialization and the machining generality of an engine can be simultaneously solved, and the corresponding production cost can be reduced.
Description
Technical field
The utility model relates to a kind of air cylinder sleeve of engine, belongs to engine design and manufacturing technology field.
Background technique
Along with the demand of motorcycle engine miniaturization, the cylinder body profile is done littler and littler, under the situation of stingy cylinder body profile, still need design big as far as possible cylinder diameter.The cylinder block of available engine is embedded with cylinder liner; The internal surface of cylinder liner often contacts with the combustion gas of high temperature, high pressure; Also receive the side pressure effect of reciprocating motion of the pistons simultaneously; So cylinder liner except high temperature resistant, high pressure resistant, corrosion-resistant, also need have enough strength and stiffness to prevent its compressive deformation.Like Fig. 1 ~ shown in Figure 3; Cylinder liner comprises cylinder body auxiliary section 1 of matching with cylinder block 3 and the skirt section 2 of stretching out cylinder block 3, and cylinder block 3 will come to be connected with crankcase body with cylinder head respectively through 4 through bolts that run through cylinder block 3 upper and lower ends, receives the restriction of 4 through bolt mounting points; Make the groove 11 that is formed with the through bolt that is used to step down on the sidewall of cylinder body auxiliary section 1; Be formed with thinner wall section 12 between the inwall of groove 11 and cylinder body auxiliary section 1, when continuing to strengthen cylinder diameter, the wall thickness corresponding to thinner wall section 12 on the cylinder body auxiliary section 1 can be removed; Cause the cylinder liner rigidity sudden change at this position; After the motor through bolt was fastening, cylinder block axially can receive very big extruding force along it, and this extruding force can make thinner wall section 12 bigger distortion occur; Thereby influence the circularity of cylinder cover inner hole, cause piston, piston ring and cylinder liner unusual wearing and tearing to occur at thinner wall section 12 corresponding positions.
For this reason; Adopt the method that increases casing through bolt centre distance to satisfy the demand that strengthens cylinder diameter in the conventional art; Consider the compactedness of motor practical structures; Strengthen casing through bolt centre distance and need the related components of motor be made suitable adjustment design, cause the seriation of motor, the versatility of processing to be guaranteed, make the cost of motor rise.
The model utility content
In order to overcome the deficiency of existing technology; The utility model provides a kind of motorcycle engine reinforced cylinder liner; The rigidity of its thinner wall section improves obviously; Avoided thinner wall section to produce distortion, the problems such as inordinate wear that can effectively eliminate cylinder liner deformation and brought, thus take into account motor miniaturization, seriation and the processing versatility problem of solving.
The utility model solves the technological scheme that its technical problem adopted:
The reinforced cylinder liner of a kind of motorcycle engine; It comprises the cylinder body auxiliary section and is connected the skirt section of lower end, cylinder body auxiliary section, and the external diameter of cylinder body auxiliary section is greater than the external diameter in skirt section, and that the sidewall of said cylinder body auxiliary section is provided with is axially extended, the groove of the through bolt that is used to step down; Be formed with thinner wall section between the inwall of groove and cylinder body auxiliary section; The both sides of said groove are provided with the protruding wall that protrudes in cylinder body auxiliary section outer wall, and protruding wall extends axially, and the wall of protruding wall adjacent recess and the groove of groove are along joining.
As the improvement of technique scheme, said protruding wall extends axially to flushing with the two ends of groove.
As the further improvement of technique scheme, 1 ~ 20mm is hanged down than the both ends of the surface of cylinder body auxiliary section respectively in the two ends of said protruding wall.
Preferably, the wall of said protruding wall adjacent recess is connected with the cell wall of groove is smooth, and groove forms arc groove with the two protruding wall walls that are adjacent.
Further, the outer wall cambered surface transition of the root of said protruding wall and cylinder body auxiliary section, the curved shape of the spine of protruding wall.
Preferably; Be provided with the extension joining portion of arc wall shape between the two protruding walls of said groove both sides; Extend the joining portion with two said protruding wall cross-over connections; The common circular hole that forms the said through bolt of stepping down of two said protruding walls, extension connecting part and groove, said protruding wall, extension joining portion and circular hole form the tubular lug.
Further, be the cambered surface transition between the outer wall of said protruding wall root and cylinder body auxiliary section.
Further, the outer wall of said cylinder body auxiliary section is provided with restraining groove.
Further, said groove be two and circumferentially adjacent distributions on the sidewall of cylinder body auxiliary section.
The beneficial effect of the utility model is: the utility model is provided with the protruding wall that protrudes in cylinder body auxiliary section outer wall through the both sides at the groove of the through bolt that is used to step down; The wall of protruding wall adjacent recess and the groove of groove are along joining; Preferably make and form arc groove between protruding wall and the groove jointly or form circular hole with groove, extension joining portion; Make the thinner wall section rigidity on the cylinder body auxiliary section obviously improve; Avoided thinner wall section to produce distortion, piston, piston ring and the cylinder liner that can effectively eliminate cylinder liner deformation and brought unusual problems such as wearing and tearing occur in thinner wall section, have played the effect that cylinder liner thinner wall section rigidity is strengthened; Simultaneously, abandoned and adopted the centre distance that strengthens the casing through bolt to reach the pattern that strengthens cylinder diameter in the conventional art, solved motor miniaturization, seriation and processing versatility problem, reduced corresponding cost of production thereby take into account.The utility model is simple and compact for structure, reinforcing effect good, and cost is low.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the engine cylinder liner construction schematic representation in the conventional art;
Fig. 2 is that air cylinder sleeve of engine is assemblied in the plan view in the cylinder block in the conventional art;
Fig. 3 is first embodiment's in the utility model a structural representation;
Fig. 4 is that first embodiment is assemblied in the plan view in the cylinder block in the utility model;
Fig. 5 is second embodiment's in the utility model a structural representation;
Fig. 6 is that second embodiment is assemblied in the plan view in the cylinder block in the utility model.
Embodiment
With reference to Fig. 1 ~ Fig. 6, the reinforced cylinder liner of a kind of motorcycle engine of the utility model comprises cylinder body auxiliary section 1 and the skirt section 2 that is connected 1 lower end, cylinder body auxiliary section; The external diameter of cylinder body auxiliary section 1 is greater than the external diameter in skirt section 2; Skirt section 2 is used for when air cylinder sleeve of engine is installed, playing the guiding role, and that the sidewall of said cylinder body auxiliary section 1 is provided with is axially extended, the groove 11 of the through bolt that is used to step down, different according to engine model and component layout; The number of groove 11 can be set to 1-4; Be two in the present embodiment, groove 11 circumferential adjacent distributions are on the sidewall of said cylinder body auxiliary section 1, because of the number of through bolt is four; Adjacent distributions is meant that the through bolt that groove 11 is stepped down is adjacent; With the center line of the timing chain chamber 31 on the cylinder block 3 and the axis line of cylinder liner is benchmark, and groove 11 is positioned at a side of this line, if having spill port 32 on the cylinder block 3; Groove 11 generally is a side that is in away from spill port 32, makes two through bolts of contiguous spill port 32 1 sides can on cylinder liner, not form thinner wall section because of interfering with cylinder liner; Be formed with thinner wall section 12 between the inwall of groove 11 and cylinder body auxiliary section 1; The both sides of said groove 11 are provided with the protruding wall 13 that protrudes in cylinder body auxiliary section 1 outer wall; Protruding wall 13 extends axially, and protruding wall 13 is one-body molded with cylinder body auxiliary section 1, preferably protruding wall 13 is extended axially to the two ends with groove 11 to flush; Strengthening the rigidity of whole thinner wall section 12, and processing is simple; Consider that the cylinder block 3 that is embedded with cylinder liner is when processing upper/lower terminal face; Protruding wall 13 suddenlys change because of material with the junction point of cylinder block 3; Can produce harmful effect to machining tool; Protruding wall 13 two ends are arranged to hang down 1 ~ 20mm than the both ends of the surface of cylinder body auxiliary section 1 respectively, to carry out cutter relieving, the protection machining tool.The wall of said protruding wall 13 adjacent recess 11 and the groove of groove 11 are along joining.
As first embodiment, the smooth connection of cell wall of the wall of said protruding wall 13 adjacent recess 11 and groove 11, groove 11 forms arc grooves 14 with the two protruding wall walls that are adjacent.Concentrate the outer wall cambered surface transition of the root of said protruding wall 13 and cylinder body auxiliary section 1, the curved shape of the spine of protruding wall 13 for fear of stress occurring.
As second embodiment; Be provided with the extension joining portion 15 of arc wall shape between the two protruding walls 13 of said groove 11 both sides; Extend joining portion 15 with two said protruding wall 13 cross-over connections, two said protruding walls 13, extend connecting part 15 and the groove 11 common circular holes 16 that form the said through bolt of stepping down, said protruding wall 13, extend joining portion 15 and circular hole 16 forms the tubular lugs; The wall thickness of protruding wall 13 roots is greater than the wall thickness of tubular lug remaining part; The root of tubular lug is strengthened, concentrate cambered surface transition between the outer wall of said protruding wall 13 roots and cylinder body auxiliary section 1 for fear of stress.Can the two ends of tubular lug be arranged to hang down 1 ~ 20mm than the both ends of the surface of cylinder body auxiliary section 1 respectively, make machining tool avoid the harmful effect of Material Processing sudden change.
Both sides through at the groove 11 of the through bolt that is used to step down are provided with the protruding wall 13 that protrudes in cylinder body auxiliary section 1 outer wall; The wall of protruding wall 13 adjacent recess 11 and the groove of groove 11 are along joining; Preferably make and form arc groove 14 between protruding wall 13 and the groove 11 jointly or form circular holes 16 with groove 11, extension joining portion 15; Make thinner wall section 12 rigidity on the cylinder body auxiliary section 1 obviously improve; Avoided thinner wall section 12 to produce distortion, piston, piston ring and the cylinder liner that can effectively eliminate cylinder liner deformation and brought unusual problems such as wearing and tearing occur in thinner wall section 12, have played the effect of strengthening cylinder liner thinner wall section rigidity; Simultaneously, abandoned and adopted the centre distance that strengthens the casing through bolt to reach the pattern that strengthens cylinder diameter in the conventional art, solved motor miniaturization, seriation and processing versatility problem, reduced corresponding cost of production thereby take into account.
As the improvement of above-mentioned mode of execution, the outer wall of said cylinder body auxiliary section 1 is provided with restraining groove 17.Consider that cylinder body joint 1 is cast iron materials; And the cylinder block 3 that is used to install cylinder body joint 1 is aluminum material; Disc between two kinds of different metallic cooperates and has certain clearance; For eliminating this gap, play circumferential position-limiting action simultaneously to cylinder liner, can on the outer wall of said cylinder body auxiliary section 1, restraining groove 17 be set.
The above, the preferred embodiments of the utility model just, but the utility model is not limited to the foregoing description as long as it reaches the technique effect of the utility model with any same or similar means, all should fall within the protection domain of the utility model.
Claims (9)
1. reinforced cylinder liner of motorcycle engine; Comprise cylinder body auxiliary section (1) and be connected the skirt section (2) of lower end, cylinder body auxiliary section (1); The external diameter of cylinder body auxiliary section (1) is greater than the external diameter of skirt section (2); That the sidewall of said cylinder body auxiliary section (1) is provided with is axially extended, the groove (11) of the through bolt that is used to step down; Be formed with thinner wall section (12) between the inwall of groove (11) and cylinder body auxiliary section (1); It is characterized in that: the both sides of said groove (11) are provided with the protruding wall (13) that protrudes in cylinder body auxiliary section (1) outer wall, and protruding wall (13) extends axially, and the groove of the wall of protruding wall (13) adjacent recess (11) and groove (11) is along joining.
2. the reinforced cylinder liner of motorcycle engine according to claim 1 is characterized in that: said protruding wall (13) extends axially to the two ends with groove (11) and flushes.
3. the reinforced cylinder liner of motorcycle engine according to claim 1 is characterized in that: 1 ~ 20mm is hanged down than the both ends of the surface of cylinder body auxiliary section (1) respectively in the two ends of said protruding wall (13).
4. according to the reinforced cylinder liner of each described motorcycle engine in the claim 1 ~ 3; It is characterized in that: the smooth connection of cell wall of the wall of said protruding wall (13) adjacent recess (11) and groove (11), groove (11) forms arc grooves (14) with the two protruding wall walls that are adjacent.
5. the reinforced cylinder liner of motorcycle engine according to claim 4 is characterized in that: the outer wall cambered surface transition of the root of said protruding wall (13) and cylinder body auxiliary section (1), the curved shape of spine of protruding wall (13).
6. according to the reinforced cylinder liner of each described motorcycle engine in the claim 1 ~ 3; It is characterized in that: the extension joining portion (15) that is provided with arc wall shape between the two protruding walls (13) of said groove (11) both sides; Extend joining portion (15) with two said protruding wall (13) cross-over connections; The common circular hole (16) that forms the said through bolt of stepping down of two said protruding walls (13), extension connecting part (15) and groove (11), said protruding wall (13), extension joining portion (15) and circular hole (16) form the tubular lug.
7. the reinforced cylinder liner of motorcycle engine according to claim 6 is characterized in that: be the cambered surface transition between the outer wall of said protruding wall (13) root and cylinder body auxiliary section (1).
8. the reinforced cylinder liner of motorcycle engine according to claim 1 is characterized in that: the outer wall of said cylinder body auxiliary section (1) is provided with restraining groove (17).
9. the reinforced cylinder liner of motorcycle engine according to claim 1 is characterized in that: said groove (11) be two and circumferentially adjacent distributions on the sidewall of cylinder body auxiliary section (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233202 CN202611899U (en) | 2012-05-22 | 2012-05-22 | Reinforced cylinder sleeve for motorcycle engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220233202 CN202611899U (en) | 2012-05-22 | 2012-05-22 | Reinforced cylinder sleeve for motorcycle engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202611899U true CN202611899U (en) | 2012-12-19 |
Family
ID=47345605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220233202 Expired - Lifetime CN202611899U (en) | 2012-05-22 | 2012-05-22 | Reinforced cylinder sleeve for motorcycle engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202611899U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678366A (en) * | 2012-05-22 | 2012-09-19 | 江门市大长江集团有限公司 | Enhanced engine cylinder sleeve |
-
2012
- 2012-05-22 CN CN 201220233202 patent/CN202611899U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102678366A (en) * | 2012-05-22 | 2012-09-19 | 江门市大长江集团有限公司 | Enhanced engine cylinder sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121219 |
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| CX01 | Expiry of patent term |