CN102913295A - Molded line structure for camshaft of engine - Google Patents
Molded line structure for camshaft of engine Download PDFInfo
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- CN102913295A CN102913295A CN2011102814072A CN201110281407A CN102913295A CN 102913295 A CN102913295 A CN 102913295A CN 2011102814072 A CN2011102814072 A CN 2011102814072A CN 201110281407 A CN201110281407 A CN 201110281407A CN 102913295 A CN102913295 A CN 102913295A
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- molded line
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Abstract
The invention provides a molded line structure for a camshaft of an engine. The molded line structure for the camshaft comprises a camshaft base circle and a cam peach, wherein the camshaft base circle and the cam peach are connected integrally; the radius of the camshaft base circle is 15-17 mm; from the radial center of the cam peach to a buffer section, a first included angle is 1.5-3 degrees, a buffer starting angle is 28-31 degrees, a buffer closing angle is 27-30 degrees, both of an air valve opening angle and an air valve closing angle are 57-59 degrees, and from the end of the buffer section to the radial center of the cam peach, a second included angle is 2.5-4 degrees; for the selection of all the angles, the air valve opening angle and the air valve closing angle are identical, the first included angle is smaller than the second included angle, and the buffer starting angle is larger than the buffer closing angle; and the starting side and the closing side of a cam molded line adopt an unsymmetrical molded line design, a buffer opening section and a buffer closing section adopt an unsymmetrical molded line design, and the maximal accelerating velocity can reach 0.024-0.029 mm/deg2, so that the low rotation speed torque of the engine is improved.
Description
Technical field
The present invention relates to engine technology, relate in particular to the engine cam molded line.
Background technique
It is low that existing put-put camshaft molded line is assemblied in the achieved slow-speed of revolution moment of torsion of use on the motor.
Summary of the invention
The camshaft Profile Design that the object of the present invention is to provide a kind of put-put to use uses the camshaft of this design can improve motor slow-speed of revolution moment of torsion, greatly improves overall performance.
The invention provides a kind of molded line structure of camshaft of engine, comprise camshaft basic circle and cam peach, described camshaft basic circle is connected that integral type connects with the cam peach, and the camshaft Base radius is 15-17mm; It is 1.5 °-3 ° that cam peach radial center to breeze way begins the first angle, opening bumper angle is 28 °-31 °, closing bumper angle is 27 °-30 °, and valve opening angle and valve closing angle are 57 °-59 °, and it is 2.5 °-4 ° that breeze way finishes to cam peach radial center the second angle; With in the choosing of upper angle, valve opening angle and valve closing angle are got formed objects, and the value of the first angle is opened the value of bumper angle greater than the value of closing bumper angle less than the value of the second angle.
As a further improvement on the present invention, the value of described the first angle is spent to 1 degree than the value little 0.5 of the second angle.
As a further improvement on the present invention, the value of described unlatching bumper angle is spent to 1 degree than the value of closing bumper angle large 0.5.
As a further improvement on the present invention, described camshaft Base radius is 15.5-16.5mm; It is 2 °-3 ° that cam peach radial center to breeze way begins the first angle, opening bumper angle is 29 °-30 °, closing bumper angle is 28 °-29 °, and valve opening angle and valve closing angle are 58 °-59 °, and it is 3 °-4 ° that breeze way finishes to the second angle of cam peach radial center.
As a further improvement on the present invention, described camshaft Base radius is 15.5mm; It is 2 ° that cam peach radial center to breeze way begins the first angle, opening bumper angle is 29.5 °, closing bumper angle is 28.5 °, and valve opening angle and valve closing angle are 58.5 °, and it is 3 ° that breeze way finishes to the second angle of cam peach radial center.
The invention has the beneficial effects as follows: cam profile maximum lift 7.5-9mm, breeze way cam lift 0.1-0.3mm.The design of cam profile has realized maximum acceleration 0.024-0.029mm/deg
2(millimeter every degree square).The acceleration of rotation class part represents with " length/angle square ".
Cam profile open side and close side and opening and closing breeze way and adopt asymmetric molded line design, the cam maximum acceleration can reach 0.024-0.029mm/deg
2, improved motor slow-speed of revolution moment of torsion.
Use the 1.2L maximum engine torque 116N.m/3600-3800rpm of the designed camshaft molded line of the present invention, full load consumption minimization 250g/kwh, overall performance has larger improvement, and slow-speed of revolution moment of torsion also increases.
[description of drawings]
Fig. 1 is camshaft molded line structure schematic diagram of the present invention.
[embodiment]
The present invention is further described below in conjunction with description of drawings and embodiment.
With reference to Fig. 1, camshaft Base radius (1) is 15-17mm, cam profile maximum lift 7.5-9mm, breeze way cam lift 0.1-0.3mm.The valve opening section: it is 2 °-4 ° that cam peach radial center (2) to breeze way begins (4) first angles (3), it is 27 °-30 ° to the unlatching breeze way angle (5) of eliminating valve clearance (6) fully that breeze way begins (4), eliminate the valve opening angle (7) that arrives valve maximum lift (8) in valve clearance (6) fully and be 57-59 °, closing flank: valve maximum lift (8) is 57-59 ° to the valve-closing angle (9) of valve-closing (10), valve-closing (10) is 27 °-30 ° to the breeze way angle (11) of closing that breeze way finishes (12), it is 2 °-4 ° to cam peach radial center (2) second angles (13) that breeze way finishes (12), and cam center is 22.5-26mm to cam peach top distance (14).Cam profile open side and close side and opening and closing breeze way and adopt asymmetric molded line design, the cam maximum acceleration can reach 0.024-0.029mm/deg
2, improved motor slow-speed of revolution moment of torsion.
A kind of molded line structure of camshaft of engine, among Fig. 1, camshaft Base radius 16mm, camshaft Base radius 1, the valve opening section: cam peach radial center 2, the first angle 3, breeze way begin 4, open breeze way angle 5, eliminate valve clearance (breeze way ends) 6, valve opening angle 7, valve maximum lift 8, closing flank fully: valve maximum lift 8, valve-closing angle 9, valve-closing 10, close breeze way angle 11, breeze way finish the 12, second angle 13, cam center to cam peach top apart from 14.
One specific embodiment is as follows more:
Camshaft Base radius 1 is 16mm, cam profile maximum lift 8mm, breeze way cam lift 0.29mm.The valve opening section: it is 2 ° that cam peach radial center 2 to breeze way begins 4 first angles 3, it is 29.5 ° to the unlatching breeze way angle 5 of eliminating valve clearance 6 fully that breeze way begins 4, eliminating valve clearance 6 fully is 58.5 ° to the valve opening angle 7 of valve maximum lift 8, closing flank: valve maximum lift 8 is 58.5 ° to the valve-closing angle 9 of valve-closing 10, valve-closing 10 is 28.5 ° to the breeze way angle 11 of closing of breeze way end 12, it is 3 ° to cam peach radial center 2 second angles 13 that breeze way finishes 12, and cam center is 24mm to cam peach top apart from 14.Cam profile open side and close side and opening and closing breeze way and adopt asymmetric molded line design, the cam maximum acceleration can reach 0.029mm/deg
2, improved motor slow-speed of revolution moment of torsion.
Above content is in conjunction with concrete preferred implementation further description made for the present invention, can not assert that implementation of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. molded line structure of camshaft of engine is characterized in that: comprise camshaft basic circle and cam peach, described camshaft basic circle is connected that integral type connects with the cam peach, and camshaft Base radius (1) is 15-17mm; It is 1.5 °-3 ° that cam peach radial center (2) to breeze way begins (4) first angles (3), opening bumper angle (5) is 28 °-31 °, closing bumper angle (11) is 27 °-30 °, valve opening angle (7) and valve closing angle (9) are 57 °-59 °, and it is 2.5 °-4 ° to cam peach radial center (2) second angles (13) that breeze way finishes (12); With in the choosing of upper angle, valve opening angle (7) and valve closing angle (9) are got formed objects, the value of the first angle (3) is opened the value of bumper angle (5) greater than the value of closing bumper angle (11) less than the value of the second angle (13).
2. a kind of molded line structure of camshaft of engine according to claim 1 is characterized in that: the value of described the first angle (3) than little 0.5 degree of value of the second angle (13) to 1 degree.
3. a kind of molded line structure of camshaft of engine according to claim 1 is characterized in that: the value ratio of described unlatching bumper angle (5) is closed large 0.5 degree of value of bumper angle (11) to 1 degree.
4. a kind of molded line structure of camshaft of engine according to claim 1, it is characterized in that: described camshaft Base radius (1) is 15.5-16.5mm; It is 2 °-3 ° that cam peach radial center (2) to breeze way begins (4) first angles (3), opening bumper angle (5) is 29 °-30 °, closing bumper angle (11) is 28 °-29 °, valve opening angle (7) and valve closing angle (9) are 58 °-59 °, and breeze way end (12) is 3 °-4 ° to second angle (13) of cam peach radial center (2).
5. a kind of molded line structure of camshaft of engine according to claim 1, it is characterized in that: described camshaft Base radius (1) is 15.5mm; It is 2 ° that cam peach radial center (2) to breeze way begins (4) first angles (3), opening bumper angle (5) is 29.5 °, closing bumper angle (11) is 28.5 °, valve opening angle (7) and valve closing angle (9) are 58.5 °, and breeze way end (12) is 3 ° to second angle (13) of cam peach radial center (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102814072A CN102913295A (en) | 2011-09-21 | 2011-09-21 | Molded line structure for camshaft of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011102814072A CN102913295A (en) | 2011-09-21 | 2011-09-21 | Molded line structure for camshaft of engine |
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| Publication Number | Publication Date |
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| CN102913295A true CN102913295A (en) | 2013-02-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011102814072A Pending CN102913295A (en) | 2011-09-21 | 2011-09-21 | Molded line structure for camshaft of engine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397921A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Engine camshaft cam |
| CN103422923A (en) * | 2013-08-27 | 2013-12-04 | 上海理工大学 | Method for designing two-peak cam with waste gas recycling function of diesel engine |
| CN103967551A (en) * | 2014-04-28 | 2014-08-06 | 奇瑞汽车股份有限公司 | Distribution cam mechanism of gasoline engine |
| CN103967550A (en) * | 2014-04-28 | 2014-08-06 | 奇瑞汽车股份有限公司 | Distribution cam mechanism of gasoline engine |
| CN104047651A (en) * | 2014-07-04 | 2014-09-17 | 上汽通用五菱汽车股份有限公司 | Admission cam shaft of engine |
| CN106352044A (en) * | 2016-07-25 | 2017-01-25 | 马勒技术投资(中国）有限公司 | Cam piece with anti-abrasion coating |
| CN106703921A (en) * | 2015-07-31 | 2017-05-24 | 长城汽车股份有限公司 | Air distribution mechanism for engine, and cam thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201531284U (en) * | 2009-09-28 | 2010-07-21 | 上汽通用五菱汽车股份有限公司 | Air inlet cam shaft line of small-displacement gasoline engine |
| CN201546771U (en) * | 2009-09-28 | 2010-08-11 | 上汽通用五菱汽车股份有限公司 | Low displacement petrol engine exhaust cam axial-type line |
| CN202228144U (en) * | 2011-09-21 | 2012-05-23 | 上汽通用五菱汽车股份有限公司 | Molded line structure of camshaft of engine |
-
2011
- 2011-09-21 CN CN2011102814072A patent/CN102913295A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201531284U (en) * | 2009-09-28 | 2010-07-21 | 上汽通用五菱汽车股份有限公司 | Air inlet cam shaft line of small-displacement gasoline engine |
| CN201546771U (en) * | 2009-09-28 | 2010-08-11 | 上汽通用五菱汽车股份有限公司 | Low displacement petrol engine exhaust cam axial-type line |
| CN202228144U (en) * | 2011-09-21 | 2012-05-23 | 上汽通用五菱汽车股份有限公司 | Molded line structure of camshaft of engine |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103397921A (en) * | 2013-07-02 | 2013-11-20 | 广西玉柴机器股份有限公司 | Engine camshaft cam |
| CN103397921B (en) * | 2013-07-02 | 2015-06-03 | 广西玉柴机器股份有限公司 | Engine camshaft cam |
| CN103422923A (en) * | 2013-08-27 | 2013-12-04 | 上海理工大学 | Method for designing two-peak cam with waste gas recycling function of diesel engine |
| CN103422923B (en) * | 2013-08-27 | 2015-10-28 | 上海理工大学 | There is the double peak cam design method of diesel exhaust recirculation function |
| CN103967551A (en) * | 2014-04-28 | 2014-08-06 | 奇瑞汽车股份有限公司 | Distribution cam mechanism of gasoline engine |
| CN103967550A (en) * | 2014-04-28 | 2014-08-06 | 奇瑞汽车股份有限公司 | Distribution cam mechanism of gasoline engine |
| CN104047651A (en) * | 2014-07-04 | 2014-09-17 | 上汽通用五菱汽车股份有限公司 | Admission cam shaft of engine |
| CN106703921A (en) * | 2015-07-31 | 2017-05-24 | 长城汽车股份有限公司 | Air distribution mechanism for engine, and cam thereof |
| CN106352044A (en) * | 2016-07-25 | 2017-01-25 | 马勒技术投资(中国）有限公司 | Cam piece with anti-abrasion coating |
| CN106352044B (en) * | 2016-07-25 | 2019-10-25 | 马勒技术投资(中国）有限公司 | Cam bit equipped with wear-resistant coating |
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Application publication date: 20130206 |