CN105673122A - Oil line structure of variable valve lift mechanism - Google Patents
Oil line structure of variable valve lift mechanism Download PDFInfo
- Publication number
- CN105673122A CN105673122A CN201610172680.4A CN201610172680A CN105673122A CN 105673122 A CN105673122 A CN 105673122A CN 201610172680 A CN201610172680 A CN 201610172680A CN 105673122 A CN105673122 A CN 105673122A
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- Prior art keywords
- oil
- oil duct
- cylinder cap
- duct
- valve
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- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 157
- 230000001360 synchronised effect Effects 0.000 description 8
- 239000010721 machine oil Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 239000010705 motor oil Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 241001347978 Major minor Species 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000004043 responsiveness Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The invention discloses an oil line structure of a variable valve lift mechanism. The oil line structure of the variable valve lift mechanism comprises a cylinder cover oil duct, a rocker shaft oil duct, a rocker oil duct, a control valve oil duct and a valve element, wherein the cylinder cover oil duct is connected with the rocker shaft oil duct; the rocker shaft oil duct is connected with the rocker oil duct; an oil drainage cavity oil duct and a cylinder cover oil inlet channel which are connected with each other are arranged between the control valve oil duct and the cylinder cover oil duct side by side; the valve element is arranged in the control valve oil duct and can move relative to the oil drainage cavity oil duct and the cylinder cover oil inlet channel; and a control valve oil inlet channel is formed in the control valve oil duct. The oil line structure of the variable valve lift mechanism is controlled through an electromagnetic valve, and is simple, easy and convenient to machine and assemble, relatively simple in technology and low in cost.
Description
Technical field
The present invention relates to engine valve actuating mechanism technical field, especially relate to a kind of variable air valve lift range mechanism oil channel structures.
Background technology
Valve actuating mechanism is one of two great institutions crucial on electromotor, valve actuating mechanism is the controlling organization of inlet and outlet, the requirement of its job order according to cylinder and work process, periodically opening and closing inlet and outlet door, supply combustion mixture (gas-duct jetting gasoline engine) or fresh air (diesel engine) discharge waste gas in time to cylinder, meet the air intake-exhaust demand of electromotor, designed by the rational intake and exhaust moment, meet the performance requirement of electromotor. When inlet and outlet door is closed, it is ensured that cylinder seal. Valve actuating mechanism movement parts is many, many by other influences factor, in motor process, the stressing conditions of each part is more complicated, precision and requirement of strength to each part are higher, and the performance level of valve actuating mechanism is very big to the power performance of electromotor and NVH and reliability effect.
Along with discharge standard adds tight and oil consumption reduction, increasing electromotor adopts direct-injection supercharging technology, valve actuating mechanism adopts VVT (VVT) mechanism and VVL (lift range variable) mechanism, to meet the performance requirement of high-performance enginer, obtain the discharge standard of less engine consumption and Geng Gao simultaneously. In view of these requirements, VVT system and VVL are that increasing electromotor adopts. Traditional valve actuating mechanism valve stroke is fixing with crank angle change curve, and when not having VVL, the valve stroke of same crankshaft angles is constant. But electromotor is very frequent at real work medium speed and load variations, operating condition is also very complicated, fixing valve stroke can not take into account various operating mode, it is impossible to providing different valve strokes in different operating modes, just cannot play optimum performance thus causing in other non-optimal valve stroke. Compared with fixing air-distributing valve lift, lift range variable then can at the rotating speed in the whole working range of electromotor with under load, suitable valve opening is provided, closes height, thus improving electromotor inlet and outlet performance, meet electromotor requirement of dynamic property, economy, toxic emission when high rotating speed is with the slow-speed of revolution, big load and Smaller load, overall raising engine performance preferably.
Along with discharge and fuel economy regulation are increasingly stricter, lift range variable technology has become one of beautiful property key technology of lifting engine performance. But the many structures of existing variable air valve lift range mechanism oil channel structures are complicated, the rocking arm of a corresponding cylinder of electromagnetic valve controls one to one, and oil circuit arranges complexity, processes loaded down with trivial details, and cost is high.
Summary of the invention
Not enough for prior art, the technical problem to be solved is to provide a kind of variable air valve lift range mechanism oil channel structures, to reach simple in construction, and the purpose that cost is low.
In order to solve above-mentioned technical problem, the technical solution adopted in the present invention is:
A kind of variable air valve lift range mechanism oil channel structures, including oil cylinder head way and rocker arm shaft oil duct and rocking arm oil duct, also include controlling valve oil road and spool, described oil cylinder head way is connected with rocker arm shaft oil duct; rocker arm shaft oil duct is connected with rocking arm oil duct; be provided with the draining chamber oil duct and cylinder cap oil input channel that are connected between described control valve oil road and oil cylinder head way side by side, and described spool is located in control valve oil road and can corresponding draining chamber oil duct and cylinder cap oil input channel move, and described control valve oil road is provided with control valve oil input channel.
Further, described oil cylinder head way includes cylinder cap main oil gallery, cylinder cap transverse direction oil duct and cylinder cap longitudinal direction oil duct, and described rocker arm shaft oil duct is connected with cylinder cap main oil gallery with cylinder cap longitudinal direction oil duct by cylinder cap transverse direction oil duct.
In described control valve oil road, the corresponding valve oil input channel that controls is provided with drainage screen.
It is connected by bearing cap oil duct between described oil cylinder head way with rocker arm shaft oil duct.
Described control valve oil input channel one end is connected with controlling valve oil road, control the valve oil input channel other end to be connected with cylinder cap main oil gallery one section, another section of cylinder cap main oil gallery is and draining chamber oil duct and the cylinder cap oil input channel section of being connected, is provided with blocking-up between cylinder cap main oil gallery one section and another section of cylinder cap main oil gallery.
Described cylinder cap main oil gallery is connected with cylinder cap transverse direction oil duct, and cylinder cap transverse direction oil duct is connected with cylinder cap longitudinal direction oil duct.
Described rocking arm oil duct is one group, and one group of rocking arm oil duct is all connected with rocker arm shaft oil duct.
The present invention compared with prior art, is had the advantage that and is controlled by an electromagnetic valve, and oil channel structures is simple, and processing and assembling are easy, and technique is relatively easy, and cost is low; Reasonable in design, stable and reliable in work, system responsiveness is good, improves engine performance.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this specification and the labelling in figure are briefly described:
Fig. 1 is oil channel structures schematic diagram of the present invention.
In figure: 1. control valve oil road, 2. draining chamber oil duct, 3. cylinder cap oil input channel, 4. control valve oil input channel, 5. cylinder cap main oil gallery, 6. cylinder cap transverse direction oil duct, 7. cylinder cap longitudinal direction oil duct, 8. bearing cap oil duct, 9. rocker arm shaft oil duct, 10. rocking arm oil duct I, 11. rocking arm oil duct II, 12. rocking arm oil duct III.
Detailed description of the invention
Below against accompanying drawing, by the description to embodiment, the specific embodiment of the present invention is described in further detail.
As shown in Figure 1, this variable air valve lift range mechanism oil channel structures, including controlling valve oil road 1, oil cylinder head way, bearing cap oil duct 8, rocker arm shaft oil duct 9 and rocking arm oil duct, wherein, oil cylinder head way includes cylinder cap main oil gallery 5, cylinder cap transverse direction oil duct 6, cylinder cap longitudinal direction oil duct 7, cylinder cap main oil gallery upper end is connected with cylinder cap transverse direction oil duct, cylinder cap transverse direction oil duct and cylinder cap longitudinal direction oil duct.
Control valve oil road 1 and cylinder cap main oil gallery 5 side by side parallel is arranged, controlling to be connected by draining chamber oil duct 2, cylinder cap oil input channel 3, control valve oil input channel 4 between valve oil road and cylinder cap main oil gallery, draining chamber oil duct, cylinder cap oil input channel, control valve oil input channel are arranged from top to bottom.
Cylinder cap main oil gallery 5 is divided into two sections directly not communicated, cylinder cap main oil gallery epimere and cylinder cap main oil gallery hypomere, it is provided with blocking-up between cylinder cap main oil gallery epimere and cylinder cap main oil gallery hypomere, draining chamber oil duct and cylinder cap oil input channel are connected with cylinder cap main oil gallery epimere, control valve oil input channel and are connected with cylinder cap main oil gallery hypomere;Control valve oil input channel one end and be connected with controlling valve oil road, control the valve oil input channel other end and be connected with cylinder cap main oil gallery hypomere.
Controlling to be provided with, between valve oil road and cylinder cap main oil gallery, the draining chamber oil duct and cylinder cap oil input channel that are connected side by side, spool is located in control valve oil road and can corresponding draining chamber oil duct and cylinder cap oil input channel move, and controls draining chamber oil duct and cylinder cap oil input channel break-make.
Oil cylinder head way includes cylinder cap main oil gallery, cylinder cap transverse direction oil duct and cylinder cap longitudinal direction oil duct, and cylinder cap longitudinal direction oil duct is connected with bearing cap oil duct, and bearing cap oil duct 8 is connected with rocker arm shaft oil duct 9; Rocking arm oil duct is one group, respectively rocking arm oil duct I 10, rocking arm oil duct II 11, rocking arm oil duct III 12, one group of rocking arm oil duct is all connected with rocker arm shaft oil duct.
Control the corresponding valve oil input channel that controls in valve oil road and be provided with drainage screen. Namely, in controlling valve oil road, drainage screen is located at cylinder cap oil input channel port and controls between valve oil input channel port, and concrete drainage screen may be installed on the control valve controlled in valve oil road.
The variable air valve lift range mechanism oil circuit of the present invention arranges that the two-stage roller rocker arms being based on rocker arm shaft completes, and this mechanism realizes lift range variable by reducing between oil pressure actuated height lift rocker arm. Controlling machine oil and enter cylinder cap main oil gallery from cylinder cap oil input channel, machine oil is delivered to bearing cap oil duct again through cylinder cap transverse direction oil duct and cylinder cap longitudinal direction oil duct, then is delivered to rocker arm shaft oil duct, is delivered in each rocking arm oil duct. Machine oil promotes height lift rocker arm synchronous piston by rocking arm gallery pressure, it is achieved variable valve lift.
Electromotor is when low-speed running, and OCV Oil Control Valve reduces and controls valve oil road inner engine oil pressure, and the synchronous piston between height lift rocker arm is compressed in low lift rocker arm under the effect of reset bullet and spring guide, and two rocking arm each self-movements are non-interference. At this moment two are driven high lift rocker arm to be in low lift location thus controlling inlet valve by low lift cams respectively, and low lift cams lift is little, so that IO Intake Valve Opens is only small, thus the gaseous mixture entering engine cylinder is also relatively few. By controlling air inflow, improve engine performance, car load demand under speed operation in meeting.
Along with the rising of engine speed, when reaching switch condition, control valve and increase injection rocker arm shaft inner engine oil pressure, active synchronization piston removes to master rocker direction under oil pressure actuated, after spring-compressed, in synchronous piston press-in master rocker pin-and-hole, major-minor rocking arm is connected by synchronous piston. At this moment synchronous piston runs through two rocking arms and makes the action simultaneously of two rocking arms. Now high-lift cam drives rocking arm, controls IO Intake Valve Opens, and opening time and the lift of inlet valve all increase. When electromotor is at fast state, extend into, " valve overlap " time that exhaust valve is opened simultaneously, make engine power and moment of torsion be improved. Meet the power demand under car load high speed.
When electromotor is down to low speed Smaller load state by high speed high load working condition, oil pressure in rocker arm shaft is controlled by controlling valve, the machine oil that oil pressure reduces in rear arm axis hole starts off-load, synchronous piston resets under action of reset spring, being pushed by synchronous piston in the synchronous piston hole of secondary-rocker, two rocking arms depart from again and connect and each self-movement.
Variable air valve lift range mechanism oil pressure control is made up of electromagnetic valve, hydraulic valve two parts. Controller controls variable lift mechanisms mainly through engine oil pressure and realizes action.Machine oil flows into cylinder cap oil input channel from controlling valve oil input channel through filter screen. When electromagnetic valve controls needle-valve state, namely control spool state, meet machine oil under different operating mode and enter from cylinder cap oil input channel, flow out from the oil duct pressure release of draining chamber.
The design is that a kind of brand-new valve actuating mechanism variable valve actuator for air oil circuit arranges existing form, adopting the flow direction controlling valve control machine oil in controlling valve oil road, whole oil circuit is arranged succinct, easy to process, oil circuit bang path is short, and different air valve lift handoff response speed is fast.
Above in conjunction with accompanying drawing, the present invention is exemplarily described; the obvious present invention implements and is not subject to the restrictions described above; as long as have employed the design of the present invention and the improvement of various unsubstantialities that technical scheme carries out; or the not improved design by the present invention and technical scheme directly apply to other occasion, all within protection scope of the present invention.
Claims (7)
1. a variable air valve lift range mechanism oil channel structures, including oil cylinder head way and rocker arm shaft oil duct and rocking arm oil duct, it is characterized in that: also include controlling valve oil road and spool, described oil cylinder head way is connected with rocker arm shaft oil duct; rocker arm shaft oil duct is connected with rocking arm oil duct; be provided with the draining chamber oil duct and cylinder cap oil input channel that are connected between described control valve oil road and oil cylinder head way side by side; described spool is located in control valve oil road and can corresponding draining chamber oil duct and cylinder cap oil input channel move, and described control valve oil road is provided with control valve oil input channel.
2. variable air valve lift range mechanism oil channel structures as claimed in claim 1, it is characterized in that: described oil cylinder head way includes cylinder cap main oil gallery, cylinder cap transverse direction oil duct and cylinder cap longitudinal direction oil duct, and described rocker arm shaft oil duct is connected with cylinder cap main oil gallery with cylinder cap longitudinal direction oil duct by cylinder cap transverse direction oil duct.
3. variable air valve lift range mechanism oil channel structures as claimed in claim 1, it is characterised in that: in described control valve oil road, the corresponding valve oil input channel that controls is provided with drainage screen.
4. variable air valve lift range mechanism oil channel structures as claimed in claim 1, it is characterised in that: it is connected by bearing cap oil duct between described oil cylinder head way with rocker arm shaft oil duct.
5. variable air valve lift range mechanism oil channel structures as claimed in claim 2, it is characterized in that: described control valve oil input channel one end is connected with controlling valve oil road, control the valve oil input channel other end to be connected with cylinder cap main oil gallery one section, another section of cylinder cap main oil gallery is and draining chamber oil duct and the cylinder cap oil input channel section of being connected, is provided with blocking-up between cylinder cap main oil gallery one section and another section of cylinder cap main oil gallery.
6. variable air valve lift range mechanism oil channel structures as claimed in claim 2, it is characterised in that: described cylinder cap main oil gallery is connected with cylinder cap transverse direction oil duct, and cylinder cap transverse direction oil duct is connected with cylinder cap longitudinal direction oil duct.
7. variable air valve lift range mechanism oil channel structures as claimed in claim 2, it is characterised in that: described rocking arm oil duct is one group, and one group of rocking arm oil duct is all connected with rocker arm shaft oil duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172680.4A CN105673122B (en) | 2016-03-22 | 2016-03-22 | A kind of variable air valve lift range mechanism oil channel structures |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172680.4A CN105673122B (en) | 2016-03-22 | 2016-03-22 | A kind of variable air valve lift range mechanism oil channel structures |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105673122A true CN105673122A (en) | 2016-06-15 |
| CN105673122B CN105673122B (en) | 2018-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610172680.4A Active CN105673122B (en) | 2016-03-22 | 2016-03-22 | A kind of variable air valve lift range mechanism oil channel structures |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201554517U (en) * | 2009-10-14 | 2010-08-18 | 奇瑞汽车股份有限公司 | Engine lubricating oil channel |
| CN102269028A (en) * | 2011-06-30 | 2011-12-07 | 奇瑞汽车股份有限公司 | Lubrication oil way of engine |
| CN101655021B (en) * | 2009-09-21 | 2011-12-14 | 奇瑞汽车股份有限公司 | Lubricating oil passage of engine cylinder body assembly |
| US20120118251A1 (en) * | 2010-11-11 | 2012-05-17 | Hyundai Motor Company | Hydraulic variable valve lift apparatus |
| CN202851102U (en) * | 2012-10-26 | 2013-04-03 | 东风汽车公司 | Oil duct structure of variable valve lift mechanism of internal combustion engine |
| JP2015017510A (en) * | 2013-07-09 | 2015-01-29 | 本田技研工業株式会社 | Oil path structure for internal combustion engine |
| CN204984524U (en) * | 2015-07-28 | 2016-01-20 | 重庆长安汽车股份有限公司 | Engine variable valve lift system oil circuit |
-
2016
- 2016-03-22 CN CN201610172680.4A patent/CN105673122B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101655021B (en) * | 2009-09-21 | 2011-12-14 | 奇瑞汽车股份有限公司 | Lubricating oil passage of engine cylinder body assembly |
| CN201554517U (en) * | 2009-10-14 | 2010-08-18 | 奇瑞汽车股份有限公司 | Engine lubricating oil channel |
| US20120118251A1 (en) * | 2010-11-11 | 2012-05-17 | Hyundai Motor Company | Hydraulic variable valve lift apparatus |
| CN102269028A (en) * | 2011-06-30 | 2011-12-07 | 奇瑞汽车股份有限公司 | Lubrication oil way of engine |
| CN202851102U (en) * | 2012-10-26 | 2013-04-03 | 东风汽车公司 | Oil duct structure of variable valve lift mechanism of internal combustion engine |
| JP2015017510A (en) * | 2013-07-09 | 2015-01-29 | 本田技研工業株式会社 | Oil path structure for internal combustion engine |
| CN204984524U (en) * | 2015-07-28 | 2016-01-20 | 重庆长安汽车股份有限公司 | Engine variable valve lift system oil circuit |
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| Publication number | Publication date |
|---|---|
| CN105673122B (en) | 2018-03-16 |
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