CN106368760A - Engine valve slow seating mechanism - Google Patents
Engine valve slow seating mechanism Download PDFInfo
- Publication number
- CN106368760A CN106368760A CN201610762412.8A CN201610762412A CN106368760A CN 106368760 A CN106368760 A CN 106368760A CN 201610762412 A CN201610762412 A CN 201610762412A CN 106368760 A CN106368760 A CN 106368760A
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- China
- Prior art keywords
- valve
- brake
- driven plunger
- base
- engine
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- 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.)
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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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
Abstract
The invention belongs to the field of design of an engine variable valve execution mechanism, and relates to an engine valve slow seating mechanism. The engine valve slow seating mechanism comprises a one-way valve with a throttling hole in the middle and a valve element matched with the throttling hole; when a valve is subject to seating, the valve element and the throttling hole are matched to gradually reduce the engine oil circulation area, and therefore the engine oil circulation resistance is increased, the flowing speed is reduced, and the valve seating speed slows down; according to the mechanism, a commonly-used hydraulic gap adjuster is integrated, and the function of automatically adjusting the valve gap is achieved. The engine valve slow seating mechanism is simple in structure, the one-way valve with a brake valve element hole and a brake valve element are matched to achieve valve slow seating and rapid opening functions; according to the structure, the brake one-way valve does not need to move, the high oil pressure impact caused by instant valve opening is not borne, reliability of the structure is improved, the service life of the structure is prolonged, and the machining and manufacturing difficulty is reduced.
Description
Technical field
The invention belongs to engine variable-valve actuator design field is and in particular to a kind of cam electric-liquid type can changing the flow of QI-blood
Door actuator, delays, particularly to a kind of engine valve, mechanism of taking a seat.
Background technology
At present, cam electric-liquid type variable valve actuation mechanism is applied in volume production vehicle, and to electromotor section
Can reduce discharging and play very big effect, slow mechanism of taking a seat is the core technology having cam electric-liquid type variable valve actuation mechanism.Its master
Act on is to be raised thus ensureing to slow down valve crash speed in air valve drop by oil pressure in high pressure chest, not to valve
Quick unlatching has a negative impact.
Patent us6474277b1 is disclosed and is cooperated by a movable valve element valve disc movable with, in gas
Door is gradually reduced the circulation area of machine oil during taking a seat, increase machine oil circulating resistance, improves engine oil pressure, thus reach to delay to fall
The function of seat, and in opening process, due to the movable property of valve disc, hydraulic oil can open rapidly valve disc, then opens gas
Door, reaches the purpose of quick unlatching.This structure that movable valve plug is cooperated with movable valve disc, in the moment of valve opening, is lived
Dynamic valve disc can be subject to larger impulsive force, have the high requirement of comparison to the intensity of valve disc, and service life is deposited with reliability
In some problems.
Patent us2003/0172890a1 discloses the cooperation by the coupled part of driven plunger, up in driven plunger
During progressively close off oil return oilhole, reduce the circulation area of machine oil, increase machine oil circulating resistance, improve engine oil pressure, thus
Reach the slow function of taking a seat, and due to top using one-way valve structures so that the machine oil of high pressure chest can smoothly enter driven post
Plug room, reaches the quick purpose opened of valve.But, using accurate male part cooperation, difficulty of processing is big, is manufactured into for this kind of structure
This height.
Content of the invention
The purpose of the present invention is that for above-mentioned the deficiencies in the prior art, provides a kind of electromotor to delay mechanism of taking a seat, its
By being gradually reduced the circulation area of machine oil during air valve drop, increase engine oil flow resistance, thus slowing down engine valve
Seating velocity.
The purpose of the present invention is achieved through the following technical solutions, as follows in conjunction with brief description:
A kind of engine valve delays mechanism of taking a seat, including outer support 10, outer support high-pressure oil duct 101, driven plunger 20, liquid
Pressure clearance adjuster feeding plunger 50, hydraulic lash adjuster assembly 60, interior bearing 80 and driven plunger compartment 90；
It is provided with brake spool 30, brake check valve assembly between described driven plunger compartment 90 and outer support high-pressure oil duct 101
40 and brake spool return spring 70；
Described brake spool 30 is provided with structure conical surface endless belt 31 and return spring flange 32；
Described brake check valve assembly 40 is made up of unidirectional valve upper cover 42, unidirectional valve base 43, stifled ball 44 and sealing ring 45,
It is provided with brake valve core bore 41, unidirectional valve upper cover 42 is provided with lid oilhole 421, check valve in the middle part of wherein said unidirectional valve assembly 40
Base 43 is provided with annular oil groove 431, base blocks up ball 432 and base oilhole 433；
When valve opening, the machine oil in outer support high-pressure oil duct 101 can be by brake valve core bore 41 and unidirectional valve assembly 40
Simultaneously enter driven plunger compartment 90；During valve-closing, the machine oil in driven plunger compartment 90 can only be flowed back by brake valve core bore 41
To outer support high-pressure oil duct 101, and taking a seat with valve, machine oil backflow area reduction, backflow resistance increases, air valve drop
Speed slows down.
Described brake spool 30 and driven plunger compartment 90 coordinate for gap.
Described driven plunger 20 is to couple cooperation with driven plunger compartment 90.
Described brake valve core bore 41 is located at the center of brake check valve assembly 40.
Described base blocks up ball 432 and is uniformly arranged on unidirectional valve base 43, its quantity and upper lid oilhole 421 quantity phase
With, and base oilhole 433 be arranged on each base block up ball 432 between.
Compared with prior art, the invention has the benefit that inventive engine valve delays takes a seat mechanism structure simply,
Matched with brake spool by the check valve with brake valve core bore realize valve delay take a seat and quick open function, Ci Zhongjie
Structure brake check valve does not need to move, and is not subject to the hydraulic oil compression shock that valve opening moment causes, and improves structure
Reliability and service life, and reduce processing and manufacturing difficulty.
Brief description
Fig. 1 is that inventive engine valve delays mechanism's valve opening state structural representation of taking a seat；
Fig. 2 is that inventive engine valve delays mechanism's valve-closing status architecture schematic diagram of taking a seat；
Fig. 3 is that inventive engine valve delays mechanism's valve semi-open status architecture schematic diagram of taking a seat；
Fig. 4 is that inventive engine valve delays mechanism's brake check valve assembly structure decomposing schematic representation of taking a seat.
In figure, 10. driven plunger 30. brake spool 40. of outer support 101. outer support high-pressure oil duct 20. brake unidirectional
Unidirectional valve base 431. annular oil groove of lid oilhole 43. on the unidirectional valve upper cover 421. of valve assembly 41. brake valve core bore 42.
432. bases block up ball 433. base oilhole 44. and block up ball 45. sealing ring, 50. hydraulic lash adjuster feeding plunger 60. liquid
The driven plunger compartment of bearing 90. in pressure clearance adjuster assembly 70. brake spool return spring 80..
Specific embodiment
Describe specific embodiments of the present invention below in conjunction with the accompanying drawings in detail.
As shown in Figure 1-Figure 3, a kind of engine valve delays mechanism of taking a seat, including outer support 10, outer support high-pressure oil duct
101st, driven plunger 20, brake spool 30, brake check valve assembly 40, hydraulic lash adjuster feeding plunger 50, hydraulic lash
REG Regulator Assembly 60, brake spool return spring 70, interior bearing 80, driven plunger compartment 90 and brake valve core bore 41.Described braking
Valve element 30, brake check valve assembly 40 and brake spool return spring 70 are arranged at driven plunger compartment 90 and outer support high-pressure oil duct
Between 101.Described brake spool 30 and driven plunger compartment 90 coordinate for gap.Described driven plunger 20 with driven plunger compartment 90 is
Coupling cooperation, and after valve opening, the sealing of machine oil is relied primarily on driven plunger 20 and is joined with driven coupling of plunger compartment 90
Close.Described brake valve core bore 41 is arranged in the middle of unidirectional valve assembly 40, is particularly located at the center of brake check valve assembly 40.
As shown in figure 4, described brake check valve assembly 40 is by unidirectional valve upper cover 42, unidirectional valve base 43, stifled ball 44 and 45 groups of sealing ring
Become, unidirectional valve upper cover 42 is provided with lid oilhole 421, unidirectional valve base 43 is provided with annular oil groove 431, base blocks up ball 432
With base oilhole 433.Described base blocks up ball 432 and is uniformly arranged on unidirectional valve base 43, and its quantity is counted with upper lid oilhole 421
Amount is identical, and base oilhole 433 is arranged on each base and blocks up between ball 432.Brake spool 30 is provided with structure conical surface endless belt
31 and return spring flange 32.
Described brake check valve assembly 40 is positioned between outer support high-pressure oil duct 101 and driven plunger compartment 90, and only
Machine oil is allowed to be flowed into driven plunger compartment 90 by outer support high-pressure oil duct 101, when needing valve opening, hydraulic oil is by outer support
High-pressure oil duct 101 rapidly enters driven plunger compartment 90 by brake check valve assembly 40, and drives brake spool 30 and driven post
Plug 20, drives valve then；When air valve drop, the starting stage brake spool 30 taken a seat not yet enters brake valve core bore 41,
Machine oil can pass through brake valve core bore 41 and flow back to outer support high-pressure oil duct 101 by driven plunger compartment 90, when air valve drop is to system
When movable valve plug 30 enters brake valve core bore 41, reducing the backflow area of brake valve core bore 41, thus increasing engine oil flow resistance, subtracting
Deferred motivation valve crash speed.
As shown in figure 1, when engine valve needs to open, stifled ball 44 is in base and blocks up in ball 432, opens outside moment
Machine oil driving brake spool 30 in bearing high-pressure oil duct 101 is descending, and brake spool 30 promotes driven plunger 20, by valve opening
Open, the machine oil in outer support high-pressure oil duct 101 passes through upper lid oilhole 421 entrance annular oil groove 431 at the same time, then passes through bottom
Seat oilhole 433 enters driven plunger compartment 90, this kind of mechanism in the valve opening stage, machine oil can by multiple upper lid oilholes 421 and
Brake valve core bore 41 simultaneously enters driven plunger compartment 90, does not affect the driving for valve for the hydraulic oil, reaches valve and quickly open
Purpose；Because brake spool 30 and driven plunger compartment 90 belong to gap cooperation, driven plunger 20 is belonged to driven plunger compartment 90
Male part, the complete UNICOM of outer support high-pressure oil duct 101 and driven plunger compartment 90 after valve opening, the foundation of oil pressure relies primarily on
Driven plunger 20 couples cooperation with driven plunger compartment 90, and now brake spool 30 passes through the effect of brake spool return spring 70
It is pressed in driven plunger 20, keep fitting with it.
As shown in Fig. 2 when engine throttled back, valve drives on driven plunger 20 in the presence of valve spring
OK, drive brake spool 30 up, machine oil flow back into outer support high-pressure oil duct 101 by driven plunger compartment 90, stifled ball 44 is in machine oil
It is pressed onto lid oilhole 421 in the presence of flowing to be blocked, therefore machine oil is only capable of flowing back by brake valve core bore 41, close in valve
The starting stage closed, brake spool 30 not yet enters brake valve core bore 41, and machine oil backflow sectional area is whole brake valve core bore
41, as shown in figure 3, with the closing of valve, brake spool 30 enters brake valve core bore 41, machine oil backflow area reduces, backflow
Resistance increases, and up with valve, and conical surface endless belt 31 enters brake valve core bore 41, and machine oil backflow area subtracts further
Little, backflow resistance increases further, and valve crash speed slows down.
As shown in Figure 1-Figure 3, hydraulic lash adjuster 60 is integrated in the lower section of driven plunger by patent of the present invention, by liquid
Pressure clearance adjuster feeding plunger 50 fuel feeding, realizes the adjust automatically of valve clearance.
Claims (5)
1. a kind of new work engine valve delays mechanism of taking a seat, including outer support (10), outer support high-pressure oil duct (101), driven post
Plug (20), hydraulic lash adjuster feeding plunger (50), hydraulic lash adjuster assembly (60), interior bearing (80) and driven plunger
Room (90) it is characterised in that:
It is provided with brake spool (30), brake check valve total between described driven plunger compartment (90) and outer support high-pressure oil duct (101)
Become (40) and brake spool return spring (70)；
Described brake spool (30) is provided with structure conical surface endless belt (31) and return spring flange (32)；
Described brake check valve assembly (40) is by unidirectional valve upper cover (42), unidirectional valve base (43), stifled ball (44) and sealing ring
(45) form, be provided with brake valve core bore (41) in the middle part of wherein said unidirectional valve assembly (40), unidirectional valve upper cover (42) is provided with
Lid oilhole (421), unidirectional valve base (43) is provided with annular oil groove (431), base blocks up ball (432) and base oilhole (433)；
During valve opening, the machine oil in outer support high-pressure oil duct (101) is same with unidirectional valve assembly (40) by brake valve core bore (41)
When enter driven plunger compartment (90)；During valve-closing, the machine oil in driven plunger compartment (90) only passes through brake valve core bore (41) and returns
Flow to outer support high-pressure oil duct (101).
2. a kind of new work engine valve according to claim 1 delay take a seat mechanism it is characterised in that: described brake spool
(30) coordinate for gap with driven plunger compartment (90).
3. a kind of new work engine valve according to claim 1 delay take a seat mechanism it is characterised in that: described driven plunger
(20) with driven plunger compartment (90) for coupling cooperation.
4. a kind of new work engine valve according to claim 1 delay take a seat mechanism it is characterised in that: described brake spool
Hole (41) is located at the center of brake check valve assembly (40).
5. a kind of new work engine valve according to claim 1 delay take a seat mechanism it is characterised in that: described base blocks up ball
Hole (432) is uniformly arranged on unidirectional valve base (43), and its quantity is identical with upper lid oilhole (421) quantity, and base oilhole
(433) it is arranged on each base to block up between ball (432).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762412.8A CN106368760B (en) | 2016-08-30 | 2016-08-30 | A kind of slow mechanism of taking a seat of engine valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610762412.8A CN106368760B (en) | 2016-08-30 | 2016-08-30 | A kind of slow mechanism of taking a seat of engine valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106368760A true CN106368760A (en) | 2017-02-01 |
| CN106368760B CN106368760B (en) | 2018-08-14 |
Family
ID=57901720
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610762412.8A Active CN106368760B (en) | 2016-08-30 | 2016-08-30 | A kind of slow mechanism of taking a seat of engine valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106368760B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255096A (en) * | 2017-07-18 | 2017-10-17 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of civil aircraft variable restrictor ports valve |
| CN111386387A (en) * | 2017-11-10 | 2020-07-07 | 雅各布斯车辆***公司 | Clearance adjustment in a lost motion engine system |
| CN114483243A (en) * | 2022-01-25 | 2022-05-13 | 吉林大学 | Cam-driven hydraulic variable valve mechanism based on electro-hydraulic control |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008116711A9 (en) * | 2007-03-24 | 2009-12-17 | Schaeffler Kg | Internal combustion engine comprising an engine brake |
| CN101907000A (en) * | 2010-06-29 | 2010-12-08 | 绵阳富临精工机械有限公司 | Automatically adjusting hydraulic tappet of engine valve clearance |
| CN203114432U (en) * | 2013-01-04 | 2013-08-07 | 江苏公大动力技术有限公司 | Variable valve time control system |
| CN103939164A (en) * | 2014-04-25 | 2014-07-23 | 安徽江淮汽车股份有限公司 | Engine valve clearance adjuster |
-
2016
- 2016-08-30 CN CN201610762412.8A patent/CN106368760B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008116711A9 (en) * | 2007-03-24 | 2009-12-17 | Schaeffler Kg | Internal combustion engine comprising an engine brake |
| CN101907000A (en) * | 2010-06-29 | 2010-12-08 | 绵阳富临精工机械有限公司 | Automatically adjusting hydraulic tappet of engine valve clearance |
| CN203114432U (en) * | 2013-01-04 | 2013-08-07 | 江苏公大动力技术有限公司 | Variable valve time control system |
| CN103939164A (en) * | 2014-04-25 | 2014-07-23 | 安徽江淮汽车股份有限公司 | Engine valve clearance adjuster |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107255096A (en) * | 2017-07-18 | 2017-10-17 | 中国航空工业集团公司西安飞行自动控制研究所 | A kind of civil aircraft variable restrictor ports valve |
| CN111386387A (en) * | 2017-11-10 | 2020-07-07 | 雅各布斯车辆***公司 | Clearance adjustment in a lost motion engine system |
| CN111386387B (en) * | 2017-11-10 | 2022-02-18 | 雅各布斯车辆***公司 | Clearance adjustment in a lost motion engine system |
| CN114483243A (en) * | 2022-01-25 | 2022-05-13 | 吉林大学 | Cam-driven hydraulic variable valve mechanism based on electro-hydraulic control |
| CN114483243B (en) * | 2022-01-25 | 2022-08-16 | 吉林大学 | Cam-driven hydraulic variable valve mechanism based on electro-hydraulic control |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106368760B (en) | 2018-08-14 |
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