CN108087052A - A kind of hydraulic pressure multi-mode Variabale valve actuation system - Google Patents
A kind of hydraulic pressure multi-mode Variabale valve actuation system Download PDFInfo
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- CN108087052A CN108087052A CN201711332703.4A CN201711332703A CN108087052A CN 108087052 A CN108087052 A CN 108087052A CN 201711332703 A CN201711332703 A CN 201711332703A CN 108087052 A CN108087052 A CN 108087052A
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- oil
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- valve
- spool
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Classifications
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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
-
- 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
- F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
A kind of hydraulic pressure multi-mode Variabale valve actuation system, belongs to engine valve actuations field.It mainly includes low pressure source, oil transportation check valve, cam, plunger pump, valve actuation device, gate gurgle valve, mode switch.Mode switch includes being provided with the spool of two-stroke drain pan, four stroke drain pans, oil supply tank, two-stroke driver slot and four stroke driver slots and is provided with oil-feed port, drain tap and the shell for driving mouth.By the axial position of control mode switch device spool, the switching between four-stoke mode and two-stroke mode is realized；It is engaged with camshaft phase modulating mechanism, it can be achieved that the switching of drive pattern and braking mode；By controlling the open/close states of gate gurgle valve, it can be achieved that flexible changeable air valve event；It is respectively that four-stoke mode and two-stroke mode flexibly choose plunger pump and start fuel feeding and start moment, the value of above-mentioned parameter such as draining to be no longer influenced by the limitation of cam profile according to type.
Description
Technical field
The present invention relates to a kind of hydraulic pressure multi-mode Variabale valve actuation systems, belong to engine valve actuations field.
Background technology
Laws and regulations in terms of increasingly strict energy-saving and emission-reduction and vehicle safety promote the quick of engine new technology
Development.Because it has the potentiality for improving engine performance, changeable air valve, stroke changeable number, cylinder deactivation, auxiliary braking, variable combustion
The technologies such as mode, variable compression ratio receive significant attention.Research tendency both domestic and external is to study the effect of these technology synergies to hair
The influence of motivation performance, it is clear that the scheme of application on the engine is infeasible simultaneously by the existing execution system of every technology.This
A little technologies can be engaged to realize by electronic control injection technology and the sufficiently high changeable air valve technology of degree of flexibility.Electronic control injection
Technology is more mature, and existing changeable air valve technology mostly be for four-stroke engine drive pattern or two-stroke start
The drive pattern exploitation of machine, therefore, to above-mentioned every technology is applied to an engine, this requires variable valve actuation
System can flexibly be cut between four stroke drive patterns, two-stroke drive pattern, four stroke braking modes, two-stroke braking mode
It changes, and under above-mentioned respective pattern, it is flexibly adjustable that valve opens and closes parameter.It at present can there has been no a Variabale valve actuation system
Meet above-mentioned requirements.
The content of the invention
It is an object of the invention to：1）Realize four stroke drive pattern of engine, two-stroke drive pattern, the braking of four strokes
Flexibly switch between pattern, two-stroke braking mode.2）In each mode, realize that valve keying parameter is flexibly adjustable, significantly
Degree ground improves the purpose of engine performance.3）Plunger pump under different mode starts the moment such as fuel feeding and beginning draining can be independent
Flexible modulation.
The technical solution adopted by the present invention is：A kind of hydraulic pressure multi-mode Variabale valve actuation system, it mainly includes low pressure
Source, cam, plunger pump, oil transportation check valve, mode switch, the gentle gate driver of gate gurgle valve.Mode switch have spool and
Shell, wherein, oil-feed port, drain tap and driving mouth are provided on shell, is provided with two-stroke drain pan on spool, four strokes are let out
Oil groove, oil supply tank, two-stroke driver slot and four stroke driver slots, oil-feed port are connected always with oil supply tank, and spool is per 720N degree
Crank angle rotates a circle, and spool tool corresponds to four-stoke mode and two-stroke mode respectively there are two axial position.Cam is every
360M crank angle degrees rotate a circle, and adjust its phase by camshaft phase modulating mechanism, cam is evenly distributed with M cam lobes.Plunger
By actuated by cams, low pressure source is connected pump by oil pocket oil transportation of the oil transportation check valve to plunger pump, the oil pocket of plunger pump with oil-feed port,
The oil outlet of drain tap and gate gurgle valve is connected with low pressure source, driving mouth be connected with the oil pocket of valve actuation device, gate gurgle valve into
The connecting pin of hydraulic fluid port be arranged on the oil circuit between driving mouth and valve actuation device or be arranged on the oil pocket of plunger pump and oil-feed port it
Between oil circuit.Under four-stoke mode, driving mouth is let out against axial position where four stroke driver slots, drain tap against four strokes
Axial position where oil groove.Under two-stroke mode, for driving mouth against axial position where two-stroke driver slot, drain tap is opposite
Axial position where two-stroke drain pan.
The beneficial effects of the invention are as follows：（a）By the axial position of control mode switch device spool, four-stoke mode is realized
Switching between two-stroke mode；It is engaged with camshaft phase modulating mechanism, it can be achieved that the switching of drive pattern and braking mode.
（b）By controlling the open/close states of gate gurgle valve, flexible changeable air valve event can be realized in each mode.（c）Four stroke moulds
Formula and two-stroke mode choose that plunger pump starts fuel feeding and to start the value at the moment such as draining independently flexible, are no longer influenced by cam type
The limitation of line.
Description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is hydraulic pressure multi-mode Variabale valve actuation system schematic diagram.
Fig. 2 is mode switch schematic diagram.
Fig. 3 is mode switch spool schematic diagram.
Fig. 4 is A-A the and G-G sectional views of mode switch.
Fig. 5 is the section B-B figure of mode switch.
Fig. 6 is the C-C sectional views of mode switch.
Fig. 7 is the D-D sectional views of mode switch.
Fig. 8 is the E-E sectional views of mode switch.
Fig. 9 is the F-F sectional views of mode switch.
In figure：1st, low pressure source, 2, cam, 3, plunger pump, 4, oil transportation check valve, 5, mode switch, 5a, spool are 5b, outer
Shell, 5IN, oil-feed port, 5OUT, drain tap, 5A, driving mouth, 5a1, two-stroke drain pan, 5a2, four stroke drain pans, 5a3, confession
Oil groove, 5a4, two-stroke driver slot, 5a5, four stroke driver slots, 6, gate gurgle valve, 7, valve actuation device.
Specific embodiment
Fig. 1 is hydraulic pressure multi-mode Variabale valve actuation system schematic diagram.Fig. 2 is that the mode switch under four-stoke mode is shown
It is intended to.Fig. 3 is mode switch spool schematic diagram.Fig. 4 is A-A the and G-G sectional views of mode switch.Fig. 5 to Fig. 9 is respectively
Section B-B, C-C sections, D-D sections, E-E sections and the F-F schematic cross-sections of mode switch under four-stoke mode.It is this
Hydraulic pressure multi-mode Variabale valve actuation system, it mainly includes low pressure source 1, cam 2, plunger pump 3, oil transportation check valve 4, pattern and cuts
Parallel operation 5,6 gentle gate driver 7 of gate gurgle valve.Mode switch 5 has spool 5a and shell 5b.Oil-feed port is provided on shell 5b
Two-stroke drain pan 5a1, four stroke drain pan 5a2, oil supply tank are provided on 5IN, drain tap 5OUT and driving mouth 5A, spool 5a
5a3, two-stroke driver slot 5a4 and four stroke driver slot 5a5, oil-feed port 5IN are connected always with oil supply tank 5a3, and spool 5a is every
720N crank angle degrees rotate a circle, and spool 5a tools correspond to four-stoke mode and two-stroke mould respectively there are two axial position
Formula.Cam 2 rotates a circle per 360M crank angle degrees, adjusts its phase by camshaft phase modulating mechanism, it is a convex that cam 2 is evenly distributed with M
Impeller blade, wherein, M and N are positive integer.Plunger pump 3 is driven by cam 2, and low pressure source 1 is by oil transportation check valve 4 to plunger pump 3
Oil pocket oil transportation, the oil pocket of plunger pump 3 is connected with oil-feed port 5IN, and the oil outlet of drain tap 5OUT and gate gurgle valve 6 is and low pressure source
1 is connected, and driving mouth 5A is connected with the oil pocket of valve actuation device 7, the connecting pin of the oil inlet of gate gurgle valve 6 be arranged on driving mouth 5A and
Oil circuit between valve actuation device 7 or the oil circuit being arranged between the oil pocket of plunger pump 3 and oil-feed port 5IN.What the present invention provided
Fig. 2 to Fig. 9 is the example that every 720 crank angle degrees of spool 5a rotate a circle.
Fig. 5 to Fig. 9 is the situation of four-stoke mode, and driving mouth 5A is let out against axial position where four stroke driver slot 5a5
Hydraulic fluid port 5OUT is against axial position where four stroke drain pan 5a2.From current time, spool 5a continues to revolve through X0 degree, driving
Mouth 5A is connected by four stroke driver slot 5a5, two-stroke driver slot 5a4, oil supply tank 5a3 with oil-feed port 5IN；Spool 5a continues to turn
X1 degree is crossed, driving mouth 5A will be closed.Drain tap 5OUT exists（360-X5）Pass through four stroke drain pans before bottom valve core 5a corners
5a2, oil supply tank 5a3 are connected with oil-feed port 5IN；Spool 5a continues to revolve through X4 degree, and drain tap 5OUT will be closed.
During spool 5a opposite shell 5b downlinks, the system will switch to two-stroke mode from four-stoke mode.Drive mouth 5A
Axial position where against two-stroke driver slot 5a4, drain tap 5OUT is against axial position where two-stroke drain pan 5a1.Valve
When the circumferential angle of core 5a opposite shells 5b remains as current angular, spool 5a continues to revolve through X2 degree, and driving mouth 5A passes through two punchings
Journey driver slot 5a4, oil supply tank 5a3 are connected with oil-feed port 5IN；Spool 5a continues to revolve through X3 degree, and driving mouth 5A will be closed；Spool
5a is continued to revolve through（180+X2）Degree, driving mouth 5A by two-stroke driver slot 5a4, oil supply tank 5a3 again with oil-feed port 5IN phases
Even；Spool 5a is continued to revolve through（180+X3）Degree, driving mouth 5A will be again turned off.Drain tap 5OUT is before X7 bottom valve core 5a corners
It is connected by two-stroke drain pan 5a1, four stroke drain pan 5a2, oil supply tank 5a3 with oil-feed port 5IN；Spool 5a continues to revolve through X6
Degree, drain tap 5OUT will be closed；Spool 5a is continued to revolve through（180-X7）Degree, drain tap 5OUT by two-stroke drain pan 5a1,
Four stroke drain pan 5a2, oil supply tank 5a3 are connected again with oil-feed port 5IN；Spool 5a is continued to revolve through（180+X6）Degree, drain tap
5OUT will be again turned off.Therefore the present invention in four-stoke mode and two-stroke mode choose plunger pump start fuel feeding
It is independently flexible with the value that starts the moment such as draining, it is no longer influenced by the limitation of cam profile.
Claims (1)
1. a kind of hydraulic pressure multi-mode Variabale valve actuation system, it mainly includes low pressure source（1）, cam（2）, plunger pump（3）, it is defeated
Oily check valve（4）, gate gurgle valve（6）, valve actuation device（7）, it is characterized in that：It is further included with spool（5a）And shell（5b）'s
Mode switch（5）, shell（5b）On be provided with oil-feed port（5IN）, drain tap（5OUT）With driving mouth（5A）, spool（5a）On
It is provided with two-stroke drain pan（5a1）, four stroke drain pans（5a2）, oil supply tank（5a3）, two-stroke driver slot（5a4）With four punchings
Journey driver slot（5a5）, oil-feed port（5IN）Always with oil supply tank（5a3）It is connected, spool（5a）Per the rotation of 720N crank angle degrees
One week, spool（5a）There are two axial positions for tool；The cam（2）It rotates a circle per 360M crank angle degrees, by camshaft
Phase modulating mechanism adjusts its phase, cam（2）Uniformly distributed M cam lobes；The plunger pump（3）By cam（2）Driving, low pressure source
（1）Pass through oil transportation check valve（4）To plunger pump（3）Oil pocket oil transportation, plunger pump（3）Oil pocket and oil-feed port（5IN）It is connected, lets out
Hydraulic fluid port（5OUT）And gate gurgle valve（6）Oil outlet and low pressure source（1）It is connected, drives mouth（5A）With valve actuation device（7）Oil
Chamber is connected, gate gurgle valve（6）The connecting pin of oil inlet be arranged on driving mouth（5A）With valve actuation device（7）Between oil circuit or set
It puts in plunger pump（3）Oil pocket and oil-feed port（5IN）Between oil circuit；Under four-stoke mode, mouth is driven（5A）Against four punchings
Journey driver slot（5a5）Place axial position, drain tap（5OUT）Against four stroke drain pans（5a2）Place axial position；Two
Under stroke mode, mouth is driven（5A）Against two-stroke driver slot（5a4）Place axial position, drain tap（5OUT）Against two-stroke
Drain pan（5a1）Place axial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332703.4A CN108087052B (en) | 2017-12-13 | 2017-12-13 | A kind of hydraulic multi-mode Variabale valve actuation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711332703.4A CN108087052B (en) | 2017-12-13 | 2017-12-13 | A kind of hydraulic multi-mode Variabale valve actuation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108087052A true CN108087052A (en) | 2018-05-29 |
| CN108087052B CN108087052B (en) | 2019-11-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711332703.4A Expired - Fee Related CN108087052B (en) | 2017-12-13 | 2017-12-13 | A kind of hydraulic multi-mode Variabale valve actuation system |
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| Country | Link |
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| CN (1) | CN108087052B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578152A (en) * | 2018-12-11 | 2019-04-05 | 大连理工大学 | Hydraulic continuous variable valve actuation and control method with cylinder deactivation function |
| CN113463638A (en) * | 2021-06-22 | 2021-10-01 | 中铁五局集团第一工程有限责任公司 | Diversion branch tunnel construction method capable of carrying out water characteristic identification |
| CN115182800A (en) * | 2022-07-20 | 2022-10-14 | 山东大学 | Hydraulic valve mechanism for realizing different lifts of same-name valves |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651687A (en) * | 1985-12-20 | 1987-03-24 | Kawasaki Jukogyo Kabushiki Kaisha | Automatic compression releasing device for four-cycle engine |
| EP1961927A2 (en) * | 2003-03-29 | 2008-08-27 | Hydraulik-Ring Gmbh | Variable valve lift device for the lift adjustment of gas-exchange valves of an internal combustion engine |
| CN105134323A (en) * | 2015-08-08 | 2015-12-09 | 大连理工大学 | Multifunctional variable-valve driving system |
| CN106640252A (en) * | 2016-12-13 | 2017-05-10 | 大连理工大学 | Axial mobile multimode hydraulic variable valve drive system |
| JP6190997B1 (en) * | 2017-04-07 | 2017-09-06 | 正裕 井尻 | Valve drive mechanism of internal combustion engine |
-
2017
- 2017-12-13 CN CN201711332703.4A patent/CN108087052B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4651687A (en) * | 1985-12-20 | 1987-03-24 | Kawasaki Jukogyo Kabushiki Kaisha | Automatic compression releasing device for four-cycle engine |
| EP1961927A2 (en) * | 2003-03-29 | 2008-08-27 | Hydraulik-Ring Gmbh | Variable valve lift device for the lift adjustment of gas-exchange valves of an internal combustion engine |
| CN105134323A (en) * | 2015-08-08 | 2015-12-09 | 大连理工大学 | Multifunctional variable-valve driving system |
| CN106640252A (en) * | 2016-12-13 | 2017-05-10 | 大连理工大学 | Axial mobile multimode hydraulic variable valve drive system |
| JP6190997B1 (en) * | 2017-04-07 | 2017-09-06 | 正裕 井尻 | Valve drive mechanism of internal combustion engine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578152A (en) * | 2018-12-11 | 2019-04-05 | 大连理工大学 | Hydraulic continuous variable valve actuation and control method with cylinder deactivation function |
| CN113463638A (en) * | 2021-06-22 | 2021-10-01 | 中铁五局集团第一工程有限责任公司 | Diversion branch tunnel construction method capable of carrying out water characteristic identification |
| CN115182800A (en) * | 2022-07-20 | 2022-10-14 | 山东大学 | Hydraulic valve mechanism for realizing different lifts of same-name valves |
| CN115182800B (en) * | 2022-07-20 | 2024-04-09 | 山东大学 | Hydraulic valve mechanism for realizing different lift of same-name valve |
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| Publication number | Publication date |
|---|---|
| CN108087052B (en) | 2019-11-22 |
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Granted publication date: 20191122 Termination date: 20211213 |
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| CF01 | Termination of patent right due to non-payment of annual fee |