CN2931797Y - Automobile engine cam shaft - Google Patents
Automobile engine cam shaft Download PDFInfo
- Publication number
- CN2931797Y CN2931797Y CN 200620044028 CN200620044028U CN2931797Y CN 2931797 Y CN2931797 Y CN 2931797Y CN 200620044028 CN200620044028 CN 200620044028 CN 200620044028 U CN200620044028 U CN 200620044028U CN 2931797 Y CN2931797 Y CN 2931797Y
- Authority
- CN
- China
- Prior art keywords
- cam shaft
- camshaft
- car engine
- exhaust
- exhaust cam
- 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.)
- Expired - Fee Related
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- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The utility model discloses an automobile engine camshaft, which comprises an air-in camshaft and an exhaust camshaft. The air-in camshaft is mounted with a driving gear, which is coupled with a transmission gear mounted to the exhaust camshaft. The utility model provides an automobile engine camshaft adopting double camshaft, which solves the pure distribution compatibility and the loud noises caused by vibration and blow owing to the application of single camshaft.
Description
Technical field
The utility model relates to a kind of camshaft of car engine.
Background technique
The motor car engine of common little air displacement adopts the single camshaft structure of overhead band valve rocker.Each cylinder all has an intake valve and an exhaust valve, drives two valve rockers according to certain phase relationship opening and closing by single camshaft.Though present single camshaft structure can realize the control of intake valve and exhaust valve, problem such as this control often exists that the distribution conformity is poor, vibration and impact noise are bigger.
Therefore, how to solve in motor car engine that the distribution conformity that adopts the single camshaft structure to exist is poor, vibration is the problem that needs solution at present with problems such as impact noise are bigger.
Summary of the invention
The purpose of this utility model provides a kind of camshaft of car engine, adopts the twin cam shaft structure, has solved because problem such as the distribution conformity that employing single camshaft structure exists is poor, vibration and impact noise are bigger.
For solving the problems of the technologies described above, the utility model provides a kind of camshaft of car engine, comprises admission cam shaft and exhaust cam shaft; On the described admission cam shaft actuation gear is set; On the described exhaust cam shaft driving gear is set; Described actuation gear and driving gear match.
Described actuation gear and driving gear all adopt helical gear.
The auxiliary helical gear that matches with driving gear is set on the described admission cam shaft.
Described admission cam shaft is parallel with described exhaust cam shaft.
Described intake cam shaft section peach cusp height is 42.665, and the Base radius of described admission cam shaft is R17 ± 0.02mm.
Described admission cam shaft full lift cornerite is 167 degree.
Described admission cam shaft right side lift cornerite is 85 degree.
Described exhaust cam shaft section peach cusp height is 42.01, and the Base radius of described exhaust cam shaft is R17 ± 0.02mm.
Described exhaust cam shaft full lift cornerite is 168 degree.
Described exhaust cam shaft left side lift cornerite is 85 degree.
Because the utility model adopts admission cam shaft and exhaust cam shaft twin cam shaft structure, has saved valve rocker.And on the described admission cam shaft actuation gear is set, and the driving gear that matches with described actuation gear is set on the described exhaust cam shaft, guaranteed the conformity of admission cam shaft and exhaust cam shaft motion.Because having saved the valve rocker vibration also obviously reduces with impact noise.
Description of drawings
Fig. 1 is the utility model twin cam shaft structural drawing;
Fig. 2 is the utility model motor transverse sectional view;
Fig. 3 is the utility model admission cam shaft cross-sectional view;
Fig. 4 is the utility model exhaust cam shaft cross-sectional view.
Embodiment
The utility model provides a kind of camshaft of car engine, adopts the twin cam shaft structure, has solved because problem such as the distribution conformity that employing single camshaft structure exists is poor, vibration and impact noise are bigger.
Below in conjunction with accompanying drawing the utility model embodiment is described in detail.
Referring to Fig. 1, this figure is the utility model twin cam shaft structural drawing.
First mode of execution of the present utility model: exhaust cam shaft 3 drives the driving helical gear 11 that is installed on the admission cam shaft 2 by the transmission helical gear on it 13.The utility model exhaust cam shaft 3 drives by coupled bent axle (not shown) and rotates, transmission helical gear 13 and exhaust cam shaft 3 interlocks, so the driving helical gear 11 that 13 drives of transmission helical gear are mated rotates.Because drive helical gear 11 and admission cam shaft 2 interlocks, therefore, the rotation that drives helical gear 11 also drives the rotation of admission cam shaft 2.So just realized the accurate interlock of exhaust cam shaft 3 and admission cam shaft 2.
The driving gear that is installed in exhaust cam shaft 3 can also be spur gear or other gears, as long as it is just passable to satisfy the transmission that can be meshing with each other of the driving gear of the actuation gear be installed in admission cam shaft 2 and exhaust cam shaft 3.Concrete other gear structures also belong to protection domain of the present utility model, do not repeat them here.
Second mode of execution of the present utility model: on admission cam shaft 2, increased auxiliary helical gear 12 with first kind of mode of execution relatively.Auxiliary helical gear 12 cooperates transmission with transmission helical gear 13 on being installed in exhaust cam shaft 3.Auxiliary helical gear 12 helper drive helical gears 13 drive helical gear 11, have so just further increased the synchronous accuracy of transmission.
The 3rd mode of execution of the present utility model: relative second mode of execution defines admission cam shaft 2 and exhaust cam shaft 3 be arranged in parallel.Can effectively reduce the space of motor like this.
Referring to Fig. 2, this figure is the utility model motor transverse sectional view.
At first specify the corresponding component title of number in the figure.1 is valve mechanism cover, and 2 is admission cam shaft, and 3 is exhaust cam shaft, and 4 is valve tappet, and 5 is intake valve, and 6 is exhaust valve, and 7 is cylinder head, and 8 is cylinder block, and 9 is piston rod part, and 10 is bent axle.
Specify the utility model working procedure below in conjunction with Fig. 2.
On motor, the head of exhaust cam shaft 3 is equipped with a camshaft timing belt pulley (referring to Fig. 1), and is connected with bent axle 10 belt pulleys by the Timing Belt wheel.When engine operation, bent axle 10 will drive exhaust cam shaft 3 rotations (clockwise direction rotation).And exhaust cam shaft 3 by transmission helical gear 13, and the driving helical gear 11 that is meshed with it and auxiliary helical gear 12 drive admission cam shafts 2 be rotated counterclockwise.
The working procedure of intake valve: when the cam peach of admission cam shaft 2 rotates to valve tappet 4 heads, the 4 downward compress inlet air door spring motions of the cam peach of admission cam shaft 2 extruding valve tappet, intake valve 5 beginnings are opened at leisure; After the cam peach of admission cam shaft 2 turned over, inlet-valve spring needed to recover the home position under the extending force effect of self, forces valve tappet 4 to move upward, and intake valve 5 is closed again at leisure.
The working procedure of exhaust valve: when the cam peach of exhaust cam shaft 3 rotates to valve tappet 4 heads, the 4 downward compression exhaust door spring motions of the cam peach of exhaust cam shaft 3 extruding valve tappet, exhaust valve 6 beginnings are opened at leisure; After the cam peach of exhaust cam shaft 3 turned over, the exhaust valve spring needed to recover the home position under the extending force effect of self, forces valve tappet 4 to move upward, and exhaust valve 6 cuts out again at leisure.
Exhaust valve spring and exhaust valve 6 tighten together by a kind of locking device, and promptly the exhaust valve spring is by compression the time, and exhaust valve 6 is opened; When the exhaust valve spring set back, exhaust valve 6 cut out.
Inlet-valve spring and intake valve 5 tighten together by a kind of locking device, and promptly inlet-valve spring is by compression the time, and intake valve 5 is opened; When inlet-valve spring set back, intake valve 5 was closed.
Referring to Fig. 3, this figure is the utility model admission cam shaft cross-sectional view.
The utility model preferred implementation: the admission cam shaft employing contains Cr, contains the Mo alloy cast iron material, adopts cold shock or case hardening technology, top HRC 〉=50, core HBS220～250.So just can solve common grey iron material camshaft tensile strength is low, hardness is on the low side to be brought easy brittle failure and not wear-resisting problem and produce that the molded lines error is big, life-span and the bad phenomenon of reliability.
Intake cam shaft section peach cusp height is 42.665, and the Base radius of admission cam shaft is R17 ± 0.02mm.Admission cam shaft full lift cornerite is 167 degree, and right side lift cornerite is 85 degree.
The utility model preferred implementation admission cam shaft key dimension and tolerance (mm) table
| Toponym | Size and tolerance (mm) |
| Bearing journal | -0.035 Ф23-0.051 |
| Thrust journal | -0.035 Ф23-0.051 |
| The thrust journal width | +0.035 12 0 |
| Dress timing gear axle journal | +0.059 Ф34.5+0.043 |
| Cam width | +1.5 10.5 0 |
| Basic circle | R17±0.02 |
| Lift | 8.665±0.02 |
| Length overall | 398 |
| The axle journal oilhole | 1.9 ± 0.1 * 90 ° of deburrings of 4-Ф 1.4 ± 0.1 aperture Ф |
| The thrust journal oilhole | Ф2.5 |
| Positioning pin hole | -0.01 Ф5-0.03 |
| The cam journal fillet | R1 |
Referring to Fig. 4, this figure is the utility model exhaust cam shaft cross-sectional view.
The utility model preferred implementation is that exhaust cam shaft section peach cusp height is 42.01, and the Base radius of exhaust cam shaft is R17 ± 0.02mm.Exhaust cam shaft full lift cornerite is 168 degree, and left side lift cornerite is 85 degree.
The utility model preferred implementation admission cam shaft, exhaust cam shaft alloy cast iron material satisfy:
Contain Cr:0.4～0.6%, Mo:0.2～0.4%, Ni:0.3～0.5%.
This admission cam shaft, exhaust cam shaft are chilled cast iron alloy or carry out case hardening, guarantee its camshaft top HRC 〉=50, core HBS220～250.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1, a kind of camshaft of car engine is characterized in that, comprises admission cam shaft and exhaust cam shaft; On the described admission cam shaft actuation gear is set; On the described exhaust cam shaft driving gear is set; Described actuation gear and driving gear match.
2, camshaft of car engine according to claim 1 is characterized in that, described actuation gear and driving gear all adopt helical gear.
3, camshaft of car engine according to claim 2 is characterized in that, the auxiliary helical gear that matches with driving gear is set on the described admission cam shaft.
4, camshaft of car engine according to claim 3 is characterized in that, described admission cam shaft is parallel with described exhaust cam shaft.
According to the arbitrary described camshaft of car engine of claim 1 to 4, it is characterized in that 5, described intake cam shaft section peach cusp height is 42.665, the Base radius of described admission cam shaft is R17 ± 0.02mm.
6, camshaft of car engine according to claim 5 is characterized in that, described admission cam shaft full lift cornerite is 167 degree.
7, camshaft of car engine according to claim 6 is characterized in that, described admission cam shaft right side lift cornerite is 85 degree.
According to the arbitrary described camshaft of car engine of claim 1 to 4, it is characterized in that 8, described exhaust cam shaft section peach cusp height is 42.01, the Base radius of described exhaust cam shaft is R17 ± 0.02mm.
9, camshaft of car engine according to claim 8 is characterized in that, described exhaust cam shaft full lift cornerite is 168 degree.
10, camshaft of car engine according to claim 9 is characterized in that, described exhaust cam shaft left side lift cornerite is 85 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044028 CN2931797Y (en) | 2006-07-19 | 2006-07-19 | Automobile engine cam shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620044028 CN2931797Y (en) | 2006-07-19 | 2006-07-19 | Automobile engine cam shaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2931797Y true CN2931797Y (en) | 2007-08-08 |
Family
ID=38348296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620044028 Expired - Fee Related CN2931797Y (en) | 2006-07-19 | 2006-07-19 | Automobile engine cam shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2931797Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014111033A1 (en) * | 2013-01-16 | 2014-07-24 | Lu Zhanggen | Engine structure |
| CN104389651A (en) * | 2014-10-31 | 2015-03-04 | 力帆实业(集团)股份有限公司 | Inlet cam for supercharged direct injection gasoline engine |
-
2006
- 2006-07-19 CN CN 200620044028 patent/CN2931797Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014111033A1 (en) * | 2013-01-16 | 2014-07-24 | Lu Zhanggen | Engine structure |
| CN104389651A (en) * | 2014-10-31 | 2015-03-04 | 力帆实业(集团)股份有限公司 | Inlet cam for supercharged direct injection gasoline engine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI HUAPU GUORUN CAR CO., LTD. Free format text: FORMER OWNER: SHANGHAI HUAPU ENGINE CO., LTD. Effective date: 20091016 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20091016 Address after: Shanghai City, Jinshan District Fengjing Industrial Park, zip code: 201501 Co-patentee after: Shanghai Huapu Engine Co., Ltd. Patentee after: Shanghai Maple Guorun Automobile Co Address before: Shanghai City, Jinshan District Fengjing town Wanfeng Highway No. 2889, zip code: 201501 Patentee before: Shanghai Huapu Engine Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070808 Termination date: 20120719 |