CN206206524U - A kind of V-type petrol engine Timing Gear Chain Transmission system - Google Patents
A kind of V-type petrol engine Timing Gear Chain Transmission system Download PDFInfo
- Publication number
- CN206206524U CN206206524U CN201620811743.1U CN201620811743U CN206206524U CN 206206524 U CN206206524 U CN 206206524U CN 201620811743 U CN201620811743 U CN 201620811743U CN 206206524 U CN206206524 U CN 206206524U
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- China
- Prior art keywords
- sprocket wheel
- layer subsystem
- guide rail
- jackshaft
- transmission system
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Abstract
The utility model discloses a kind of V-type petrol engine Timing Gear Chain Transmission system, the system includes the first layer subsystem（1）, the second layer subsystem（2）, third layer subsystem（3）, left countershaft（4）With right jackshaft（5）；First layer subsystem（1）By left countershaft（4）Drive the second layer subsystem（2）, the first layer subsystem（1）By right jackshaft（5）Drive third layer subsystem（3）, and then control the open and close of valve.The utility model is using multiple field and the distribution form of multiaxial type, a kind of V-type petrol engine Timing Gear Chain Transmission system with three layer subsystems is provided, the vibration and noise of this petrol engine Timing Gear Chain Transmission system can not only be reduced, the transmission stability of Timing Gear Chain Transmission system is improved, and can effectively solve the problem that the valve timing problem of this petrol engine.
Description
Technical field
The invention belongs to automobile engine timing chain drive system technical field, and in particular to a kind of V-type gasoline engine
Machine Timing Gear Chain Transmission system.
Background technology
Timing system is essential within the engine.Timing system is the important component of engine valve actuating mechanism,
It is connected to the crankshaft sprocket and camshaft sprocket of engine, is the connection bridge that bent axle and camshaft cooperate, engine
Output power is completed finally by the rotation of bent axle, and the rotation of camshaft will control the in good time open and close of inlet and outlet door,
Ensure that engine inlet and outlet door is mutually coordinated with the reciprocating motion of piston, accomplish that air inlet is sufficient, it is thorough to be vented.Therefore, only pass through
Engine crankshaft sprocket controls camshaft sprocket with accurate gearratio, and camshaft sprocket controls inlet and exhaust valve, realizing
The in good time open and close of inlet and outlet door, it is ensured that air inflow and capacity, just can guarantee that the power output of automobile engine is timely
Effectively, maximization can be reached.
The timing system applied in automobile engine air distributing device mainly has timing gears transmission, Synchronous Belt Drive, just
When three kinds of forms of Chain conveyer.The rigidity of timing gears transmission is poor, and when engine volume is larger, then seeming, comparing is heavy, increases
Engine weight, and in valve actuating mechanism when high engine speeds are operated, is influenced whether inlet and outlet door keying, when
Preceding timing gears transmission has been eliminated substantially；Synchronous Belt Drive is applied to high-revolving operating mode, but due to general timing skin
The rapidoprint of V belt translation is all rubber, there is a problem of aging, it is necessary to regularly maintain and safeguard, its own also has some offices
It is sex-limited.Compared with timing gears transmission and Synchronous Belt Drive, timing chain system can work under engine rotating speed high, work as hair
When motivation rotation speed change scope is larger, timing chain transmission can also meet the distribution demand of engine, still can accurately control
Gearratio processed, it is ensured that the timing of valve actuating mechanism is opened and closed, and timing chain drive system compact conformation, lighter in weight, engine block
Product also will not be excessive when larger increase engine weight, the rapidoprint of timing chain drive system is mostly metal, and itself is not deposited
In problem of aging, it is possible to achieve with the engine same life-span, it is not necessary to regularly maintain and safeguard, this just compensate for timing well
Gear drive and the deficiency of Synchronous Belt Drive.
The content of the invention
The technical problems to be solved by the invention are can to reach its performance for a V-type Gasoline engine developments are a to need
The multiple field multiaxial type Timing Gear Chain Transmission system asked, can reduce this car engine timing silent chain transmission system
Vibration and noise, improves the transmission stability of Timing Gear Chain Transmission system, effectively solves the distribution of this automobile engine
Timing problem.
The technical solution adopted by the present invention is：A kind of V-type petrol engine Timing Gear Chain Transmission system, mainly including three
Layer subsystem, adds two jackshafts between the engine crankshaft and camshaft.
A kind of V-type petrol engine Timing Gear Chain Transmission system, including the first layer subsystem 1, the second layer subsystem 2,
Third layer subsystem 3, left countershaft 4 and right jackshaft 5；
First layer subsystem 1 includes crankshaft sprocket 6, left countershaft sprocket wheel 7, right jackshaft sprocket wheel 8, tooth form chain 9, tensioning
Guide rail 10, fixed guide rail 11 and hydraulic tensioner 12；Tooth form chain 9 and left countershaft sprocket wheel 7, right jackshaft sprocket wheel 8 and song
Axle sprocket wheel 6 is connected by meshing transmission, and fixed guide rail 11 is arranged on the silent chain between left countershaft sprocket wheel 7 and right jackshaft sprocket wheel 8
On tooth form chain 9 on bar 9 and between right jackshaft sprocket wheel 8 and crankshaft sprocket 6, tensioning guide rail 10 is arranged on left countershaft chain
On tooth form chain 9 between wheel 7 and crankshaft sprocket 6, hydraulic tensioner 12 is connected with the tensioning contact of guide rail 10；
Second layer subsystem 2 is identical with the structure of third layer subsystem 3, during simply relative position includes with setting angle difference
Countershaft sprocket wheel 13, exhaust cam shaft sprocket wheel 14, admission cam shaft sprocket wheel 15, chain 9, tensioning guide rail 10, fixed guide rail 11, hydraulic pressure
Stretcher 12；Tooth form chain 9 connects with jackshaft sprocket wheel 13, exhaust cam shaft sprocket wheel 14 and the engaged transmission of admission cam shaft sprocket wheel 15
Connect, fixed guide rail 11 is arranged on the tooth form chain 9 between jackshaft sprocket wheel 13 and exhaust cam shaft sprocket wheel 14, is tensioned guide rail 10
On tooth form chain 9 between jackshaft sprocket wheel 13 and air inlet crankshaft sprocket 15, hydraulic tensioner 12 with tensioning guide rail 10
Contact connection；The left countershaft sprocket wheel 7 of the first layer subsystem 1 connects the jackshaft chain of the second layer subsystem 2 by left countershaft 4
Wheel 13, the right jackshaft sprocket wheel 8 of the first layer subsystem 1 connects the jackshaft sprocket wheel of third layer subsystem 3 by right jackshaft 5
13。
Bent axle turns clockwise when engine works, and the left side of crankshaft sprocket 6 of the first layer subsystem 1 is pilled-in selvedge, the second layer
The pilled-in selvedge of subsystem 2 and third layer subsystem 3 is in the left side of jackshaft sprocket wheel 13.
In three layer subsystems of the V-type petrol engine Timing Gear Chain Transmission system, left of the first layer subsystem 1
Axle sprocket wheel 6 drives the exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel 15 of the second layer subsystem 2 by left countershaft 4, the
One layer subsystem 1 drives the exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel of third layer subsystem 3 by right jackshaft 5
15.The place plane of first layer subsystem 2 is with the place plane of the second layer subsystem 2 at a distance of 5mm, the place plane of the first layer subsystem 1
With the place plane of third layer subsystem 3 at a distance of 10mm.
The hole heart of the carrier bar of the tooth form chain 9 of selection away from being 6.35mm, bearing pin pore radius 1.27mm, apothem 2.49mm,
Inner side profile radius of curvature 10mm, 30 ° of profile angle, final choice is arranged as 4 × 5 chains.
Crankshaft sprocket 6, left countershaft chain in first layer subsystem of V-type petrol engine Timing Gear Chain Transmission system 1
Wheel 7, the right number of teeth of jackshaft sprocket wheel 8 is equal, and gearratio is 1：1：1；Second layer subsystem 2 and the jackshaft chain of third layer subsystem 3
Wheel 13 is 1 with the gearratio of exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel 15:2, it is ensured that the timing system bent axle with enter
Exhaust cam shaft sprocket ratio is respectively 1:2.
Crankshaft sprocket 6, left countershaft sprocket wheel 7 are identical with the structural parameters of right jackshaft sprocket wheel 8 in first layer subsystem 1：
Number of teeth z=32, reference diameter d=64.785mm, tip diameter da=62.538, root diameter df=56.296, pressure angle
α=30°。
Second layer subsystem 2 is with the structural parameters of the jackshaft sprocket wheel 13 of third layer subsystem 3：The tooth of jackshaft sprocket wheel 13
Number z=23, reference diameter d=46.634mm, tip diameter da=44.265, root diameter df=33.181, pressure angle α=
30°；Exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel 15 number of teeth z=46, reference diameter d=93.05mm, tip diameter
Da=90.899, root diameter df=84.599, pressure angle α=30 °.
The first layer subsystem 1 has a tensioning guide rail 10 and two in the V-type petrol engine Timing Gear Chain Transmission system
Bar identical fixes guide rail 11, and the second layer subsystem 2 is identical with the structure of third layer subsystem 3 a tensioning guide rail 10 and one
Fixed guide rail 11；Each guide rail is all made up of three sections of circular sliding slopes, and R1 is interlude radius of curvature, and R2 and R3 is respectively and leads
Rail two ends radius of curvature.
Beneficial effects of the present invention：Using multiple field and the distribution form of multiaxial type, there is provided one kind has three layer subsystems
V-type petrol engine Timing Gear Chain Transmission system, this car engine timing silent chain transmission system can not only be reduced
Vibration and noise, improve the transmission stability of Timing Gear Chain Transmission system, and can effectively solve the problem that this car engine
The valve timing problem of machine.
Brief description of the drawings
Fig. 1 is a kind of front view of V-type petrol engine Timing Gear Chain Transmission system of the invention.
Fig. 2 is a kind of left view of V-type petrol engine Timing Gear Chain Transmission system of the invention.
Fig. 3 is the structure chart of the first layer subsystem in a kind of V-type petrol engine Timing Gear Chain Transmission system of the invention.
Fig. 4 is the structure of second and third layer subsystem in a kind of V-type petrol engine Timing Gear Chain Transmission system of the invention
Figure.
Wherein：1st, the first layer subsystem；2nd, the second layer subsystem；3rd, third layer subsystem；4th, left countershaft；5th, right centre
Axle；6th, crankshaft sprocket；7th, left countershaft sprocket wheel；8th, right jackshaft sprocket wheel；9th, tooth form chain；10th, it is tensioned guide rail；11st, fixation is led
Rail；12nd, hydraulic tensioner；13rd, jackshaft sprocket wheel；14th, exhaust cam shaft sprocket wheel；15th, admission cam shaft sprocket wheel.
Specific embodiment
The present invention is described in further details with example below in conjunction with the accompanying drawings.
Fig. 1 is a kind of front view of V-type petrol engine Timing Gear Chain Transmission system of the invention.Fig. 2 is the present invention one
Plant the left view of V-type petrol engine Timing Gear Chain Transmission system.As seen from the figure, a kind of V-type petrol engine timing
Silent chain transmission system using multiple field and multiaxial type distribution form, including the first layer subsystem 1, the second layer subsystem 2, the
Three layer subsystems 3, left countershaft 4 and right jackshaft 5；First layer subsystem 1 drives the second layer subsystem 2 by left countershaft 4,
First layer subsystem 1 drives third layer subsystem 3 by right jackshaft 5.The place plane of first layer subsystem 2 and second layer subsystem
, at a distance of 5mm, the place plane of the first layer subsystem 1 is with the place plane of third layer subsystem 3 at a distance of 10mm for 2 place planes of uniting.
Fig. 3 is the structure chart of the first layer subsystem in a kind of V-type petrol engine Timing Gear Chain Transmission system of the invention.
First layer subsystem 1 include crankshaft sprocket 6, left countershaft sprocket wheel 7, right jackshaft sprocket wheel 8, tooth form chain 9, tensioning guide rail 10,
Fixed guide rail 11 and hydraulic tensioner 12；Tooth form chain 9 and left countershaft sprocket wheel 7, right jackshaft sprocket wheel 8 and crankshaft sprocket 6
Be connected by meshing transmission, fixed guide rail 11 be arranged on the tooth form chain 9 between left countershaft sprocket wheel 7 and right jackshaft sprocket wheel 8 with
And on the tooth form chain 9 between right jackshaft sprocket wheel 8 and crankshaft sprocket 6, tensioning guide rail 10 is arranged on left countershaft sprocket wheel 7 and song
On tooth form chain 9 between axle sprocket wheel 6, hydraulic tensioner 12 is connected with the tensioning contact of guide rail 10.
Crankshaft sprocket 6, left countershaft sprocket wheel 7 are identical with the structural parameters of right jackshaft sprocket wheel 8 in first layer subsystem 1：
Number of teeth z=32, reference diameter d=64.785mm, tip diameter da=62.538, root diameter df=56.296, pressure angle
α=30°。
Fig. 4 is the structure of second and third layer subsystem in a kind of V-type petrol engine Timing Gear Chain Transmission system of the invention
Figure.Second layer subsystem 2 is identical with the structure of third layer subsystem 3, and simply relative position is different from setting angle including jackshaft
Sprocket wheel 13, exhaust cam shaft sprocket wheel 14, admission cam shaft sprocket wheel 15, tooth form chain 9, tensioning guide rail 10, fixed guide rail 11, hydraulic pressure
Stretcher 12；Tooth form chain 9 connects with jackshaft sprocket wheel 13, exhaust cam shaft sprocket wheel 14 and the engaged transmission of admission cam shaft sprocket wheel 15
Connect, fixed guide rail 11 is arranged on the tooth form chain 9 between jackshaft sprocket wheel 13 and exhaust cam shaft sprocket wheel 14, is tensioned guide rail 10
On tooth form chain 9 between jackshaft sprocket wheel 13 and air inlet crankshaft sprocket 15, hydraulic tensioner 12 with tensioning guide rail 10
Contact connection；The left countershaft sprocket wheel 7 of the first layer subsystem 1 connects the jackshaft chain of the second layer subsystem 2 by left countershaft 4
Wheel 13, the right jackshaft sprocket wheel 8 of the first layer subsystem 1 connects the jackshaft sprocket wheel of third layer subsystem 3 by right jackshaft 5
13。
Second layer subsystem 2 is number of teeth z=23, reference circle with the structural parameters of the jackshaft sprocket wheel 13 of third layer subsystem 3
Diameter d=46.634mm, tip diameter da=44.265, root diameter df=33.181, pressure angle α=30 °；Exhaust cam
The structural parameters of axle sprocket wheel 14 and admission cam shaft sprocket wheel 15 are number of teeth z=46, reference diameter d=93.05mm, tip diameter
Da=90.899, root diameter df=84.599, pressure angle α=30 °.
The hole heart of the carrier bar of tooth form chain 9 of selection is away from being 6.35mm, and bearing pin pore radius 1.27mm, apothem 2.49mm are interior
Side profile radius of curvature 10mm, 30 ° of profile angle, final choice is arranged as 4 × 5 chains.
The gearratio of the first layer subsystem of V-type petrol engine Timing Gear Chain Transmission system 1 is 1:1, second layer subsystem
System 2 is with the jackshaft sprocket wheel 13 of third layer subsystem 3 and the gearratio of exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel 15
1:2, it is ensured that the timing system bent axle is 1 with intake and exhaust cam axle sprocket ratio:2.
The first layer subsystem 1 has a tensioning guide rail 10 and two in the V-type petrol engine Timing Gear Chain Transmission system
Bar identical fixes guide rail 11, and the second layer subsystem 2 is identical with the structure of third layer subsystem 3 a tensioning guide rail 10 and one
Fixed guide rail 11；Each guide rail is all made up of three sections of circular sliding slopes, and R1 is interlude radius of curvature, and R2 and R3 is respectively and leads
Rail two ends radius of curvature.Track parameters such as following table in V-type petrol engine each layer subsystem of Timing Gear Chain Transmission system
It is shown：
。
In engine working process, the crankshaft sprocket 6 of the first layer subsystem 1 along rotating clockwise, and by silent chain
Bar 9 drives left countershaft sprocket wheel 7 and right jackshaft sprocket wheel 8 to rotate, due to two jackshaft sprocket wheels in the first layer subsystem
Stress is different, therefore the tooth form chain 9 of tensioning guide rail 10 side is slack list, is provided with the tooth form chain of the both sides of fixed guide rail 11
9 is pilled-in selvedge, and the hydraulic tensioner 12 of slack list is tensioned to tooth form chain 9, it is ensured that the layer subsystem can smoothly run.First
The left countershaft sprocket wheel 7 of layer subsystem 1 drives the jackshaft sprocket wheel 13 of the second layer subsystem 2, jackshaft chain by left countershaft 4
Wheel 13 drives exhaust cam shaft sprocket wheel 14 and admission cam shaft sprocket wheel 15 by tooth form chain 9；Left of first layer subsystem 1
Axle sprocket wheel 8 drives the jackshaft sprocket wheel 13 of third layer subsystem 3, jackshaft sprocket wheel 13 to drive exhaust cam by tooth form chain 9
Axle sprocket wheel 14 and admission cam shaft sprocket wheel 15；And then control the open and close of valve.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art in the technical scope of present disclosure, technology according to the present invention scheme and its
Inventive concept is subject to equivalent or change, should all be included within the scope of the present invention.
Claims (10)
1. a kind of V-type petrol engine Timing Gear Chain Transmission system, it is characterised in that：Including the first layer subsystem（1）, second
Layer subsystem（2）, third layer subsystem（3）, left countershaft（4）With right jackshaft（5）；First layer subsystem（1）Including bent axle
Sprocket wheel（6）, left countershaft sprocket wheel（7）, right jackshaft sprocket wheel（8）, tooth form chain（9）, tensioning guide rail（10）, fixed guide rail（11）
And hydraulic tensioner（12）；Tooth form chain（9）With left countershaft sprocket wheel（7）, right jackshaft sprocket wheel（8）And crankshaft sprocket（6）
It is connected by meshing transmission, fixed guide rail（11）Installed in left countershaft sprocket wheel（7）With right jackshaft sprocket wheel（8）Between tooth form chain
（9）Upper and right jackshaft sprocket wheel（8）And crankshaft sprocket（6）Between tooth form chain（9）On, it is tensioned guide rail（10）Installed in a left side
Jackshaft sprocket wheel（7）And crankshaft sprocket（6）Between tooth form chain（9）On, hydraulic tensioner（12）With tensioning guide rail（10）Connect
Touch connection；Second layer subsystem（2）With third layer subsystem（3）Structure is identical, including jackshaft sprocket wheel（13）, exhaust cam shaft
Sprocket wheel（14）, admission cam shaft sprocket wheel（15）, tooth form chain（9）, tensioning guide rail（10）, fixed guide rail（11）, hydraulic tensioner
（12）；Tooth form chain（9）With jackshaft sprocket wheel（13）, exhaust cam shaft sprocket wheel（14）With admission cam shaft sprocket wheel（15）Engagement is passed
Dynamic connection, fixed guide rail（11）Installed in jackshaft sprocket wheel（13）With exhaust cam shaft sprocket wheel（14）Between tooth form chain（9）
On, it is tensioned guide rail（10）Installed in jackshaft sprocket wheel（13）With air inlet crankshaft sprocket（15）Between tooth form chain（9）On, hydraulic pressure
Stretcher（12）With tensioning guide rail（10）Contact connection；First layer subsystem（1）Left countershaft sprocket wheel（7）By left countershaft
（4）Connect the second layer subsystem（2）Jackshaft sprocket wheel（13）, the first layer subsystem（1）Right jackshaft sprocket wheel（8）By the right side
Jackshaft（5）Connection third layer subsystem（3）Jackshaft sprocket wheel（13）.
2. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that：First
Layer subsystem（1）Place plane and the second layer subsystem（2）Place plane is at a distance of 5mm, the first layer subsystem（1）Place plane with
Third layer subsystem（3）Place plane is at a distance of 10mm.
3. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that described
Tight guide rail（10）With fixed guide rail（11）It is made up of three sections of circular arcs, interlude radius of curvature is R1.
4. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 3, it is characterised in that：First
Layer subsystem（1）Middle tensioning guide rail（10）Middle segmental arc radius of curvature R 1=120.4mm；Fixed guide rail（11）Middle segmental arc
Radius of curvature R 1=340mm.
5. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 3, it is characterised in that：Second
Layer subsystem（2）With third layer subsystem（3）In, it is tensioned guide rail（10）Middle segmental arc radius of curvature R 1=250mm；Fixation is led
Rail（11）Middle segmental arc radius of curvature R 1=746.5mm.
6. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that：First
Layer subsystem（1）Middle crankshaft sprocket（6）, left countershaft sprocket wheel（7）, right jackshaft sprocket wheel（8）The number of teeth is equal, and gearratio is 1：1：
1；Second layer subsystem（2）With third layer subsystem（3）Jackshaft sprocket wheel（13）With admission cam shaft sprocket wheel（15）And exhaust
Camshaft sprocket（14）Gearratio be respectively 1:2.
7. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that：First
Layer subsystem（1）Middle crankshaft sprocket（6）, left countershaft sprocket wheel（7）With right jackshaft sprocket wheel（8）Structural parameters it is identical.
8. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 7, it is characterised in that：It is described
Structural parameters are：Number of teeth z=32, reference diameter d=64.785mm, tip diameter da=62.538, root diameter df=
56.296, pressure angle α=30 °.
9. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that：Second
Layer subsystem（2）With third layer subsystem（3）Described in jackshaft sprocket wheel（13）Structural parameters be：Number of teeth z=23, reference circle
Diameter d=46.634mm, tip diameter da=44.265, root diameter df=33.181, pressure angle α=30 °；The air inlet
Camshaft sprocket（15）With exhaust cam shaft sprocket wheel（14）Structural parameters be：Number of teeth z=46, reference diameter d=93.05mm,
Tip diameter da=90.899, root diameter df=84.599, pressure angle α=30 °.
10. a kind of V-type petrol engine Timing Gear Chain Transmission system according to claim 1, it is characterised in that：It is described
Tooth form chain（9）Carrier bar the hole heart away from being 6.35mm, bearing pin pore radius is 1.27mm, and apothem is 2.49mm, inner side flank profil
Radius of curvature is 10mm, and profile angle is 30 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620811743.1U CN206206524U (en) | 2016-07-29 | 2016-07-29 | A kind of V-type petrol engine Timing Gear Chain Transmission system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620811743.1U CN206206524U (en) | 2016-07-29 | 2016-07-29 | A kind of V-type petrol engine Timing Gear Chain Transmission system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206206524U true CN206206524U (en) | 2017-05-31 |
Family
ID=58756477
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|---|---|---|---|
| CN201620811743.1U Expired - Fee Related CN206206524U (en) | 2016-07-29 | 2016-07-29 | A kind of V-type petrol engine Timing Gear Chain Transmission system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051077A (en) * | 2016-07-29 | 2016-10-26 | 辽宁正时动力传动科技有限公司 | V-shaped gasoline engine timing tooth chain transmission system |
-
2016
- 2016-07-29 CN CN201620811743.1U patent/CN206206524U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106051077A (en) * | 2016-07-29 | 2016-10-26 | 辽宁正时动力传动科技有限公司 | V-shaped gasoline engine timing tooth chain transmission system |
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Granted publication date: 20170531 Termination date: 20180729 |