CN100582442C - Variable valve set in automobile engine - Google Patents
Variable valve set in automobile engine Download PDFInfo
- Publication number
- CN100582442C CN100582442C CN200610040913A CN200610040913A CN100582442C CN 100582442 C CN100582442 C CN 100582442C CN 200610040913 A CN200610040913 A CN 200610040913A CN 200610040913 A CN200610040913 A CN 200610040913A CN 100582442 C CN100582442 C CN 100582442C
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- Prior art keywords
- ball bearing
- thrust ball
- camshaft
- pull bar
- spherical thrust
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- 238000007599 discharging Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 8
- 239000003921 oil Substances 0.000 description 8
- 230000005540 biological transmission Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000033001 locomotion Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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Abstract
A variable air door device of automobile engine consists of cam shaft, bearing and bush both for supporting cam shaft. It is featured as setting a sliding-support unit at one end of cam shaft and setting regulation unit at another end of cam shaft in order to make cam shaft be moved axially.
Description
Technical field
The present invention relates to a kind of variable pneumatic door set in automobile engine.
Background technique
Usually, when automobile turned round under engine low rotation speed or little load condition, the fuel economy of motor was relatively poor, and discharging does not reach the emission standard of country or international regulation, and the environment around giving has brought pollution.
In order to address the above problem, on motor car engine, used a kind of motor car engine changeable air valve technology (VVT), promptly along with the difference of the working condition of motor, motor can be under the operation of control system, automatically regulate the time of the closure or openness of intake valve or exhaust valve, thereby the change air inlet phase reaches mixed gas under any working condition, can both clean-burning purpose.At present, adopting maximum is the variable valve gear VVT of hydraulic type), but, this device is owing to adopt hydraulic oil to drive the work of conventional variable valve gear, usually because oil pressure deficiency, oil impregnate or the leakage of oil of hydraulic variable valve gear (VVT), and cause the technical problem of variable valve gear (VVT) cisco unity malfunction, therefore, the fuel economy that can not effectively solve motor is relatively poor, and discharging does not reach the problem of the emission standard of country or international regulation.
Goal of the invention
The technical problem of solution that the present invention adopts is, the same fuel economy that adopts variable valve gear (VVT) to solve motor is relatively poor, discharging does not reach the emission standard of country or international regulation, and can guarantee the technical problem of variable valve gear (VVT) proper functioning, and a kind of variable pneumatic door set in automobile engine that provides.
Technological scheme provided by the present invention is, a kind of variable pneumatic door set in automobile engine, comprise the bearing and the bearing shell of camshaft, the described camshaft of support, an end of described camshaft is provided with slidably support device, and the other end is provided with and makes the axially movable controlling device of camshaft.
Described camshaft comprises admission cam shaft and the exhaust cam shaft that is arranged symmetrically on the cylinder head.
Described support device and cam sleeve load are connected together.
Described support device is made up of driving gear and driven gear, and described driving gear and driven gear mounting arrangements are at the front end of camshaft.
Described driving gear and driven gear are respectively the helical gear of left and right sides spiral.
Described controlling device comprises main spherical thrust ball bearing, from spherical thrust ball bearing, eccentric wheel, backguy and pull bar, described eccentric wheel is arranged in described main spherical thrust ball bearing and between the spherical thrust ball bearing; Described eccentric wheel links to each other with pull bar; Pull bar links to each other with gas pedal by backguy.
Described main spherical thrust ball bearing with and from the rearward end of spherical thrust ball bearing mounting arrangements at camshaft.
Described eccentric wheel and pull bar are interference fit, rotate with pull bar.
Adopt technological scheme provided by the present invention, the fuel economy that can effectively solve motor is relatively poor, discharging does not reach the technical problem of the emission standard of country or international regulation, simultaneously, the technical solution used in the present invention is to utilize the driving mechanism of simple mechanical structure and motor itself, position by gas pedal, the rotation of drive eccentric wheel, the inlet and outlet camshaft is produced to move forward and backward, utilize the working principle of helical gear engagement, make the inlet and outlet camshaft produce relative rotation, change intake valve timing and valve lift.Adopt after the technological scheme provided by the present invention compared with prior art, reduce the oil consumption of low engine speed and sub load, improve the fuel economy of motor, optimize the discharging of motor.Also have in addition, drive path is short, and simple in structure, medium tache is few, and the component of use are less, thereby guarantees the reliability height of whole system, transmission accuracy height.
Description of drawings
Below in conjunction with the drawings and specific embodiments, the present invention is further illustrated.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the L-L generalized section of Fig. 1 of the present invention.
Wherein, 1, driving gear; 2, driven gear; 3, exhaust cam shaft; 4, admission cam shaft; 5, main spherical thrust ball bearing, 6, eccentric wheel; 7, from the spherical thrust ball bearing; 8, pull bar; 9; Backguy.
Embodiment
Shown in Fig. 1-2, the present invention is a kind of variable pneumatic door set in automobile engine, comprises driving gear 1, driven gear 2, exhaust cam shaft 3, admission cam shaft 4, main spherical thrust ball bearing 5, eccentric wheel 6, from spherical thrust ball bearing 7, pull bar 8, backguy 9 and support the bearing of described camshaft and device such as bearing shell.
Described camshaft comprises admission cam shaft 4 and the exhaust cam shaft 3 that is arranged symmetrically on the cylinder head.
Form support device by driving gear 1 and driven gear 2, described driving gear 1 and driven gear 2 mounting arrangements are at the front end of camshaft, and are connected together with the cam sleeve load.Described driving gear 1 and driven gear 2 are respectively the helical gear of left and right sides spiral.
By main spherical thrust ball bearing 5, form controlling device from spherical thrust ball bearing 7, eccentric wheel 6, backguy 9 and pull bar 8 etc., described eccentric wheel 6 is arranged in described main spherical thrust ball bearing 5 and between the spherical thrust ball bearing 7; Described eccentric wheel 6 links to each other with pull bar 8; Pull bar 8 links to each other with gas pedal by backguy 9.
Described main spherical thrust ball bearing 5 with and from the rearward end of spherical thrust ball bearing 7 mounting arrangements at camshaft, respectively with admission cam shaft 4 and exhaust cam shaft 3 with the form of suit, be fixed together.
Described eccentric wheel 6 is an interference fit with pull bar 8, with pull bar 8 rotations.
Described backguy 9 mainly is to be used for connecting gas pedal and pull bar 8, pull bar 8 ends are equipped with a rolling bearing, under the effect of less external force, pull bar 8 rotates freely, eccentric wheel 6 is interference fit with pull bar 8, with pull bar 8 rotations, promote on main spherical thrust ball bearing 5 on the exhaust cam shaft 3 and the admission cam shaft 4 from spherical thrust ball bearing 7, make intake and exhaust cam axle 3 produce reverse motions vertically, by the meshing relation between the left-hand helical gear on dextrorotation active oblique gear on the exhaust cam shaft 3 and the admission cam shaft 4, make into, exhaust cam shaft 3 produces relative rotation, and change is advanced, exhaust valve timing and valve lift.According to the inlet and outlet valve timing and the valve lift that change, vehicle-mounted central computer and electrospray control system in conjunction with the variable signal that each sensor arrives, are controlled oil spout and intake and exhaust, arrive clean-burning purpose.
Especially small displacement engine is because of lacking variable valve gear (VVT) device for most of motors, and motor fuel economy when low speed and sub load is relatively poor, and discharging does not reach country and international standard, utilizes this device, can overcome these defectives.
Motor car engine is utilized the switching time of the positioning control intake valve of gas pedal, can be according to the rotating speed and the operating mode of motor, timing is adjusted to air gate distribution, the variable valve gear (VVT) of utilization mechanical device, simple in structure, be suitable for, avoided hydraulic variable valve gear (VVT) because of the oil pressure deficiency, controller leakage of oil and the problem that causes variable valve gear (VVT) not operate, its groundwork principle is: the driver steps on or unclamps gas pedal, backguy 9 drives eccentric wheel 6 by pull bar 8 and rotates, exhaust cam shaft 3 and admission cam shaft 4 are produced to be moved axially, be respectively the helical gear of left and right sides spiral because of driving gear 1 and driven gear 2, utilize the relation of helical gear engagement, thereby make admission cam shaft 4 produce relative rotation, therefore, change has taken place in the air inlet valve timing, thereby has in a disguised form changed the valve lift of intake valve.
Adopt technological scheme provided by the present invention, the fuel economy that can effectively solve motor is relatively poor, discharging does not reach the technical problem of the emission standard of country or international regulation, simultaneously, the technical solution used in the present invention is to utilize the driving mechanism of simple mechanical structure and motor itself, position by gas pedal, drive eccentric wheel 6 rotations, inlet and outlet camshaft 3 is produced to move forward and backward, utilize the working principle of helical gear engagement, make admission cam shaft 4 produce relative rotation, change intake valve timing and valve lift.Adopt after the technological scheme provided by the present invention compared with prior art, reduce the oil consumption of low engine speed and sub load, improve the fuel economy of motor, optimize the discharging of motor.
Driving mechanism of the present invention, drive path is short, and simple in structure, medium tache is few, and the component of use are less, thereby guarantee the reliability height of whole system, transmission accuracy height.
In conjunction with the accompanying drawings the present invention has been carried out exemplary description above; obviously specific implementation of the present invention is not subjected to the restriction of aforesaid way; as long as adopted the method design of invention and the various improvement that technological scheme is carried out; or directly apply to other occasion without improvement, all within protection scope of the present invention.
Claims (4)
1, a kind of variable pneumatic door set in automobile engine, the bearing and the bearing shell that comprise camshaft, the described camshaft of support, one end of described camshaft is provided with slidably support device, the other end is provided with and makes the axially movable controlling device of camshaft, described support device is made up of driving gear (1) and driven gear (2), described driving gear (1) and driven gear (2) mounting arrangements are at the front end of camshaft, it is characterized in that described driving gear (1) and driven gear (2) are respectively the helical gear of left and right sides spiral.
2, want 1 described a kind of variable pneumatic door set in automobile engine as right, it is characterized in that, described controlling device comprises main spherical thrust ball bearing (5), from spherical thrust ball bearing (7), eccentric wheel (6), backguy (9) and pull bar (8), described eccentric wheel (6) is arranged in described main spherical thrust ball bearing (5) and between the spherical thrust ball bearing (7); Described eccentric wheel (6) links to each other with pull bar (8); Pull bar (8) links to each other with gas pedal by backguy (9).
3, a kind of variable pneumatic door set in automobile engine as claimed in claim 2 is characterized in that, described main spherical thrust ball bearing (5) with and from the rearward end of spherical thrust ball bearing (7) mounting arrangements at camshaft.
4, a kind of variable pneumatic door set in automobile engine as claimed in claim 2 is characterized in that, described eccentric wheel (6) is an interference fit with pull bar (8), rotates with pull bar (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610040913A CN100582442C (en) | 2006-08-07 | 2006-08-07 | Variable valve set in automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610040913A CN100582442C (en) | 2006-08-07 | 2006-08-07 | Variable valve set in automobile engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1959071A CN1959071A (en) | 2007-05-09 |
| CN100582442C true CN100582442C (en) | 2010-01-20 |
Family
ID=38070911
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610040913A Expired - Fee Related CN100582442C (en) | 2006-08-07 | 2006-08-07 | Variable valve set in automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100582442C (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100840A (en) * | 1986-02-20 | 1987-09-02 | 雷良榆 | Continuous adjustable expansion cycle prolonging internal combustion engine |
| DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
| CN1576521A (en) * | 2003-07-14 | 2005-02-09 | 本田技研工业株式会社 | Internal combustion engine with cam support |
| DE102004021376A1 (en) * | 2004-04-30 | 2005-12-08 | Audi Ag | Valve train for internal combustion engine, has sliding surface forming radial bearing and formed in bearing block, and radially rotating nut connected with lubricant e.g. oil, supply of internal combustion engine |
-
2006
- 2006-08-07 CN CN200610040913A patent/CN100582442C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100840A (en) * | 1986-02-20 | 1987-09-02 | 雷良榆 | Continuous adjustable expansion cycle prolonging internal combustion engine |
| DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
| CN1576521A (en) * | 2003-07-14 | 2005-02-09 | 本田技研工业株式会社 | Internal combustion engine with cam support |
| DE102004021376A1 (en) * | 2004-04-30 | 2005-12-08 | Audi Ag | Valve train for internal combustion engine, has sliding surface forming radial bearing and formed in bearing block, and radially rotating nut connected with lubricant e.g. oil, supply of internal combustion engine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1959071A (en) | 2007-05-09 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100120 Termination date: 20210807 |