CN201568091U - Cam of engine camshaft - Google Patents
Cam of engine camshaft Download PDFInfo
- Publication number
- CN201568091U CN201568091U CN2009203049809U CN200920304980U CN201568091U CN 201568091 U CN201568091 U CN 201568091U CN 2009203049809 U CN2009203049809 U CN 2009203049809U CN 200920304980 U CN200920304980 U CN 200920304980U CN 201568091 U CN201568091 U CN 201568091U
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Abstract
The utility model discloses a cam of an engine camshaft. An air inlet cam mold line and an exhaust cam mold line of the cam are newly designed mold lines and aim to improve the power performance of the engine and reduce the discharge of harmful gas, and the maximum torque of the engine at low speed is increased to 220 Nm from 215 Nm of the prior art by the adjustment of the angles of each functional segment on the air inlet cam mold line and the exhaust cam mold line, and the improvement on the lift parameters of the air inlet cam and the exhaust cam; the maximum power is increased to 119 kW from 115 kW of the prior art at the high speed; and the discharge of the harmful gas of the engine under different work conditions is reduced, and the minimum oil consumption is reduced from 278g/kWh of the prior art to 260g/kWh.
Description
Technical field
The utility model relates to the cam of engine cam, and more particularly, it relates to a kind of intake cam molded lines and exhaust cam molded lines of engine cam.
Background technique
Existing engine cam has design to improve part inadequately more.
As the cam profile of existing 4G24 h type engine h camshaft, its intake cam molded lines is designed to: the cam base circle diameter is Φ 37 ± 0.05mm, and it is the valve opening breeze way that cam profile is provided with 0～22.5 ° of angular interval; 64 ° of angular interval are set for opening the valve section behind the valve opening breeze way; After opening the valve section, 63 ° of angular interval are set for closing the valve section; It is the valve-closing breeze way that 28.5 ° of angular interval are set after closing the valve section.
The cam profile of existing 4G24 h type engine h camshaft, its exhaust cam molded lines is designed to: the cam base circle diameter is Φ 37 ± 0.05mm, it is the valve opening breeze way that cam profile is provided with 0～20 ° of angular interval; 63 ° of angular interval are set for opening the valve section behind the valve opening breeze way; After opening the valve section, 61 ° of angular interval are set for closing the valve section; It is the valve-closing breeze way that 28 ° of angular interval are set after closing the valve section.
The intake cam molded lines of existing 4G24 h type engine h camshaft and exhaust cam molded lines, because its design deficiency about air inflow, exhaust amount parameter, the deficiency that has following three aspects: moment of torsion is big inadequately during low cruise, power is not high enough during high speed operation, and the toxic emission index is also not ideal enough.Along with the raising of market, need intake cam molded lines and the redesign of exhaust cam molded lines, to satisfy the demand in relevant national standard and market to existing 4G24 h type engine h camshaft to requirement of motor car engine power performance and environmental protection fuel-economizing requirement.
The intake cam molded lines lift such as the table 1 of existing 4G24 h type engine h camshaft:
Table 1
The lift such as the table 2 of the exhaust cam molded lines of existing 4G24 h type engine h camshaft.
Table 2
The model utility content
Technical problem to be solved in the utility model is, the cam of a kind of engine cam of brand-new design, be a kind of intake cam molded lines of brand-new design and exhaust cam molded lines, adopt this intake cam molded lines and exhaust cam molded lines, can make motor obtain the moment that optimal valve is opened and closed, improve engine power performance effectively and reduce discharge amount of exhaust gas.
In order to solve the problems of the technologies described above, the utility model adopts following technical proposals.
The cam of a kind of engine cam of the utility model, by adjusting the angle of each functional section on intake cam molded lines and the exhaust cam molded lines, and the lift parameter of intake cam and exhaust cam improved, make motor obtain the moment that optimal valve is opened and closed, improve engine power performance effectively and reduce discharge amount of exhaust gas.
The cam of described a kind of engine cam, its intake cam molded lines, be disposed with valve opening breeze way, valve gradually the section of opening, valve gradually the section of closing, valve-closing breeze way and valve-closing keep section.Described valve opening breeze way, angle are 85.5 ∑ to 66.5 ∑s, and corresponding lift is 0 to 0.3207mm; Described valve is the section of opening gradually, and angle is 66.5 ∑ to 0 ∑s, and corresponding lift is 0.3207 to 10.3035mm; Described valve is the section of closing gradually, and angle is 0 ∑ to 65.5 ∑, and corresponding lift is 10.3035 to 0.3693mm; Described valve-closing breeze way, angle are 65.5 ∑ to 90.5 ∑s, and corresponding lift is 0.3693 to 0mm; Described cam profile, all the other angular interval of one-period are that the valve-closing of 0mm lift keeps section.
The cam of described a kind of engine cam, its exhaust cam molded lines, be disposed with valve opening breeze way, valve gradually the section of opening, valve gradually the section of closing, valve-closing breeze way and valve-closing keep section.Described valve opening breeze way, angle are 83 ∑ to 63 ∑s, and corresponding lift is 0 to 0.3201mm; Described valve is the section of opening gradually, and angle is 63 ∑ to 0 ∑s, and corresponding lift is 0.3201 to 9.0231mm; Described valve is the section of closing gradually, and angle is 0 ∑ to 61 ∑, and corresponding lift is 9.0231 to 0.4401mm; Described valve-closing breeze way, angle are 61 ∑ to 89 ∑s, and corresponding lift is 0.4401 to 0mm; Described cam profile, all the other angular interval of one-period are that the valve-closing of 0mm lift keeps section.
Each big section curved section of described intake cam molded lines and exhaust cam molded lines is all the roundlet arc that is no less than a section and constitutes, and whole cam profile whole data points as shown in Table, all is that the circular arc smooth transition connects.
The base circle diameter (BCD) of described cam is Φ 36.95～37.05mm.
The cam of described a kind of engine cam, the lift such as the table 3 of its intake cam molded lines:
Table 3
The cam of described a kind of engine cam, its exhaust cam molded lines lift such as table 4:
Table 4
The cam of a kind of engine cam of the present utility model, its intake cam molded lines and exhaust cam molded lines belong to the molded lines of brand-new design, adopt this intake cam molded lines and exhaust cam molded lines, make motor obtain optimal valve and open and close moment.By engine pedestal experiment and demarcation are detected proof, the cam of utilization the utility model camshaft compared with prior art, has following beneficial effect:
1. can make motor obtain bigger moment of torsion when low speed, Maximum Torque is brought up to 220Nm from the 215Nm of prior art during low speed;
2. can make motor obtain higher power when high speed, peak output is brought up to 119Kw from the 115Kw of prior art during high speed;
3. can reduce the noxious gas emission of motor under different operating modes, consumption minimization is reduced to 260g/Kwh from the 276g/Kwh of prior art.
Be furnished with Variable Valve Timing driver, better effects if again if use motor of the present utility model.
Description of drawings
Fig. 1 is the intake cam molded lines schematic representation that prior art is used for 4G24 h type engine h camshaft;
Fig. 2 is the exhaust cam molded lines schematic representation that prior art is used for 4G24 h type engine h camshaft;
Fig. 3 is the intake cam molded lines schematic representation of a kind of engine cam of the utility model;
Fig. 4 is the exhaust cam molded lines schematic representation of a kind of engine cam of the utility model.
The implication of each toponym, mark is in Fig. 1～4: begin upwards to mark the longitudinal axis from initial point, longitudinal axis right side is the valve opening side, and longitudinal axis left side is the valve-closing side; Arrow is represented the cam rotation direction clockwise; " lift h ", " angle θ "; Angle θ begins respectively to the right or measure in the left side from the longitudinal axis.
Embodiment
The utility model will be further described below in conjunction with accompanying drawing.Figure 3 shows that a kind of intake cam molded lines schematic representation of engine cam, as shown in the figure: the cam base circle diameter is Φ 37 ± 0.05mm, and it is the valve opening breeze way that cam profile is provided with 0～19 ° of angular interval; 66.5 ° of angular interval are set for opening the valve section behind the valve opening breeze way; After opening the valve section, 65.5 ° of angular interval are set for closing the valve section; It is the valve-closing breeze way that 25 ° of angular interval are set after closing the valve section.
Figure 4 shows that a kind of exhaust cam molded lines schematic representation of engine cam, as shown in the figure: the cam base circle diameter is Φ 37 ± 0.05mm, and it is the valve opening breeze way that cam profile is provided with 0～20 ° of angular interval; 63 ° of angular interval are set for opening the valve section behind the valve opening breeze way; After opening the valve section, 61 ° of angular interval are set for closing the valve section; It is the valve-closing breeze way that 28 ° of angular interval are set after closing the valve section.
The intake cam molded lines lift such as the table 5 of camshaft:
Table 5
The exhaust cam molded lines lift such as the table 6 of camshaft:
Table 6
The cam of a kind of engine cam of the present utility model, its admission cam molded lines and exhaust cam molded lines make engine obtain optimal valve and open and close moment. By engine pedestal test and demarcation are detected proof, use the cam profile of the utility model camshaft compared with prior art, following beneficial effect is arranged:
1. can make engine obtain bigger moment of torsion when low speed, peak torque is brought up to 220Nm from the 215Nm of prior art during low speed;
2. can make engine obtain higher power when high speed, peak power is brought up to 119Kw from the 115Kw of prior art during high speed;
3. can reduce the noxious gas emission of engine under different operating modes, consumption minimization is down to 260g/Kwh from the 278g/Kwh of prior art.
Be furnished with again VVT driver, better effects if if use engine of the present utility model.
Claims (6)
1. the cam of an engine cam, its intake cam molded lines be disposed with valve opening breeze way, valve gradually the section of opening, valve gradually the section of closing, valve-closing breeze way and valve-closing keep section, it is characterized in that, described valve opening breeze way, angle is 85.5 ° to 66.5 °, and corresponding lift is 0 to 0.3207mm; Described valve is the section of opening gradually, and angle is 66.5 ° to 0 °, and corresponding lift is 0.3207 to 10.3035mm; Described valve is the section of closing gradually, and angle is 0 ° to 65.5 °, and corresponding lift is 10.3035 to 0.3693mm; Described valve-closing breeze way, angle are 65.5 ° to 90.5 °, and corresponding lift is 0.3693 to 0mm; Described cam profile, all the other angular interval of one-period are that the valve-closing of 0mm lift keeps section.
2. the cam of a kind of engine cam according to claim 1 is characterized in that, the molded lines lift such as the following table of described intake cam:
3. the cam of a kind of engine cam according to claim 1 and 2 is characterized in that, the molded lines of described intake cam, its base circle diameter (BCD) are Φ 37 ± 0.05mm.
4. the cam of an engine cam, its exhaust cam molded lines be disposed with valve opening breeze way, valve gradually the section of opening, valve gradually the section of closing, valve-closing breeze way and valve-closing keep section, it is characterized in that, described valve opening breeze way, angle is 83 ° to 63 °, and corresponding lift is 0 to 0.3201mm; Described valve is the section of opening gradually, and angle is 63 ° to 0 °, and corresponding lift is 0.3201 to 9.0231mm; Described valve is the section of closing gradually, and angle is 0 ° to 61 °, and corresponding lift is 9.0231 to 0.4401mm; Described valve-closing breeze way, angle are 61 ° to 89 °, and corresponding lift 0.4401 is to 0mm; Described cam profile, all the other angular interval of one-period are that the valve-closing of 0mm lift keeps section.
5. the cam of a kind of engine cam according to claim 4 is characterized in that, the molded lines lift such as the following table of described exhaust cam:
6. according to the cam of claim 4 or 5 described a kind of engine cams, it is characterized in that the molded lines of described exhaust cam, its base circle diameter (BCD) are Φ 37 ± 0.05mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203049809U CN201568091U (en) | 2009-06-24 | 2009-06-24 | Cam of engine camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203049809U CN201568091U (en) | 2009-06-24 | 2009-06-24 | Cam of engine camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201568091U true CN201568091U (en) | 2010-09-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203049809U Expired - Fee Related CN201568091U (en) | 2009-06-24 | 2009-06-24 | Cam of engine camshaft |
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| CN (1) | CN201568091U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486103A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Air admission cam for small gasoline engine |
| CN102486104A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN103498709A (en) * | 2013-09-24 | 2014-01-08 | 安徽江淮汽车股份有限公司 | Cam shaft of turbocharged gasoline engine |
| CN105484817A (en) * | 2016-01-06 | 2016-04-13 | 重庆金桥机器制造有限责任公司 | Low-noise automobile cam |
-
2009
- 2009-06-24 CN CN2009203049809U patent/CN201568091U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486103A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Air admission cam for small gasoline engine |
| CN102486104A (en) * | 2010-12-31 | 2012-06-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN102486103B (en) * | 2010-12-31 | 2013-09-11 | 上汽通用五菱汽车股份有限公司 | Air admission cam for small gasoline engine |
| CN102486104B (en) * | 2010-12-31 | 2013-11-06 | 上汽通用五菱汽车股份有限公司 | Exhaust cam of small gasoline engine |
| CN103498709A (en) * | 2013-09-24 | 2014-01-08 | 安徽江淮汽车股份有限公司 | Cam shaft of turbocharged gasoline engine |
| CN105484817A (en) * | 2016-01-06 | 2016-04-13 | 重庆金桥机器制造有限责任公司 | Low-noise automobile cam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ji'nan Geely Auto Parts Co., Ltd. Assignor: Zhejiang Geely Automobile Research Institute Co., Ltd., Zhejiang Geely Holding Group Company Limited Contract record no.: 2012370000284 Denomination of utility model: Cam of engine camshaft Granted publication date: 20100901 License type: Exclusive License Record date: 20121225 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100901 Termination date: 20140624 |
|
| EXPY | Termination of patent right or utility model |