CN209067302U - High speed engine continuous variable air valve lift range mechanism peculiar to vessel - Google Patents
High speed engine continuous variable air valve lift range mechanism peculiar to vessel Download PDFInfo
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- CN209067302U CN209067302U CN201822076295.7U CN201822076295U CN209067302U CN 209067302 U CN209067302 U CN 209067302U CN 201822076295 U CN201822076295 U CN 201822076295U CN 209067302 U CN209067302 U CN 209067302U
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Abstract
The utility model discloses a kind of high speed engine continuous variable air valve lift range mechanisms peculiar to vessel.High speed engine continuous variable air valve lift range mechanism peculiar to vessel includes: rocker arm assembly, comprising: valve rocker and rocker arm shaft, what the middle part of the valve rocker can rotate is threaded through on rocker arm shaft, and one end of the valve rocker is abutted with push rod, and the other end offers guide groove；Sliding block adjusts component comprising: adjusting screw, guide runner, pull rod, driving mechanism and ball cup limited block, what the guide runner can slide is laid in guide groove, and is connect by pull rod with the driving mechanism；And valve assembly comprising: valve and air valve bridge, the air valve bridge are abutted by air valve bridge top surface with the ball cup, and the valve is abutted with the bottom surface of air valve bridge.High speed engine continuous variable air valve lift range mechanism peculiar to vessel, to improve the torque output of engine, reduces fuel consumption by changing the Rocker Ratio of valve rocker.
Description
Technical field
The utility model is about engine art, especially with regard to a kind of high speed engine continuous variable valve liter peculiar to vessel
Journey mechanism.
Background technique
Currently, the valve stroke of reciprocating piston internal combustion engine usually immobilizes, the air inlet system and exhaust system of engine are difficult to match
Fuel system and pressure charging system are closed to take into account high engine speeds and middle low-speed performance needs, particularly with high-speed high-power hair peculiar to vessel
For motivation, usually to make choice, the ship machine of certain purposes emphasizes high speed performance, and the ship machine of certain purposes emphasize in it is low
Fast performance, the good engine of middle low-speed performance performance under high-speed working condition is undesirable, and vice versa, so as to cause engine
Use scope is restricted, and generalization degree is not high, and social benefit and economic benefit are bad.
In general, needing air inlet to have vortex intensity appropriate when middle low speed and load, to improve indoor air inlet mixing of burning
Effect；And under middle low speed high load and high-speed high-load operating condition, and need air inlet sufficient.These are fixed for valve stroke
Engine for be difficult to take into account.
The shortcomings that prior art:
First, valve stroke, which immobilizes, is difficult to take into account middle low speed and load and middle low speed high load operating condition.Engine
Performance is difficult to be not fully exerted, and the power output and fuel economy of middle low speed are affected.
Second, valve stroke, which immobilizes, is difficult to take into account high speed underload and high-speed high-load operating condition.The performance of engine
It is difficult to be not fully exerted, the power output and fuel economy under high-speed working condition are affected.
Third, the valve actuating mechanism that valve stroke is fixed, the time from valve opening to maximum opening is longer, air inlet or exhaust
Resistance is big, and inflation or exhaust efficiency are low, and intake and exhaust energy loss is big, and the performance for limiting engine plays.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of simple and reasonable high speed engine continuous variable valves peculiar to vessel
Lift mechanisms, Rocker Ratio of the high speed engine continuous variable air valve lift range mechanism peculiar to vessel by change valve rocker, realization pair
Valve opening lift continuously adjusts, to improve the torque output of engine, reduces fuel consumption.
To achieve the above object, the utility model provides a kind of high speed engine continuous variable valve stroke machine peculiar to vessel
Structure, comprising: rocker arm assembly comprising: valve rocker and rocker arm shaft, what the middle part of the valve rocker can rotate, which be threaded through, shakes
On arm axle, one end of the valve rocker is abutted with push rod, and the other end offers guide groove；Sliding block adjusts component comprising: it adjusts
Whole screw, guide runner, pull rod, driving mechanism and ball cup limited block, what the guide runner can slide is laid in guiding
In slot, and it is connect by pull rod with the driving mechanism；The adjusting screw links together guide runner and ball cup；Institute
The Rocker Ratio that driving mechanism changes valve rocker by pull rod pulling guide runner along guide groove back-and-forth motion is stated, is realized to gas
Door opens continuously adjusting for lift；And valve assembly comprising: valve and air valve bridge, the air valve bridge pass through air valve bridge top
Face is abutted with the ball cup, and the valve is abutted with the bottom surface of air valve bridge.
In a preferred embodiment, sliding block adjusts component further include: limited block is laid under the guide groove
Side, connect by adjusting screw with guide runner.
In a preferred embodiment, driving mechanism is servo motor, solenoid valve, hydraulic cylinder or pneumatic linear actuator.
In a preferred embodiment, valve assembly further include: air valve bridge guide rod is fixed in cylinder head, institute
It states air valve bridge to be threaded through on air valve bridge guide rod, be moved up and down along air valve bridge guide rod.
In a preferred embodiment, valve assembly further include: valve spring bases and valve spring footstock, the valve
Spring pedestal and valve spring footstock are laid on valve respectively, and the valve spring bases are mounted on the corresponding seats of cylinder head
In.
Compared with prior art, high speed according to the present utility model engine continuous variable air valve lift range mechanism peculiar to vessel has
It is following the utility model has the advantages that
1, may be implemented to be continuously adjusted valve stroke, the adaptability for working condition of engine is more preferable, can combine in it is low
Speed and high speed performance, engine power responsiveness, middle low speed torque and economy get a promotion.
2, independent control that can respectively to inlet valve and exhaust valve lift.
It 3, can be by inlet valve when the matched product of engine or engine institute, which is in an emergency, needs hard stop
Or exhaust valve lift minimizes, piston running resistance increases, until engine misses are shut down, improves the peace of engine operation
Quan Xing.
4, the number of parts changed is less, adaptable to the matching of existing structure, especially in combination with Motronic control maps control
After system processed, after being demarcated by reasonable electronic technology, the control of valve stroke will be more accurate, and overall performance will obtain effectively
It is promoted.
Detailed description of the invention
Fig. 1 is the master according to the high speed engine continuous variable air valve lift range mechanism peculiar to vessel of one embodiment of the utility model
Depending on structural schematic diagram.
Fig. 2 is bowing according to the high speed engine continuous variable air valve lift range mechanism peculiar to vessel of one embodiment of the utility model
Angle structural schematic diagram.
Fig. 3 is the tune according to the high speed engine continuous variable air valve lift range mechanism peculiar to vessel of one embodiment of the utility model
Whole pre-structure schematic diagram.
Fig. 4 is the tune according to the high speed engine continuous variable air valve lift range mechanism peculiar to vessel of one embodiment of the utility model
Structural schematic diagram after whole.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As depicted in figs. 1 and 2, the high speed of the utility model engine continuous variable air valve lift range mechanism peculiar to vessel includes: to shake
Arm component, sliding block adjust component and valve assembly, wherein sliding block adjusts component by being arranged on the valve rocker of valve assembly
The sliding block of Rocker Ratio can be adjusted, realization continuously adjusts valve opening lift, and when valve stroke increases, inlet channel is cut
Face or exhaust passage section increase therewith, can improve air inlet deficiency of the engine in middle low speed high load operating condition lower cylinder and ask
Topic and exhaust back pressure and the excessively high problem of row's temperature reduce fuel consumption to improve the torque output of engine.
Specifically, rocker arm assembly includes: valve rocker 1 and rocker arm shaft 6, and what the middle part of valve rocker 1 can rotate wears
It is located on rocker arm shaft 6, one end of valve rocker 1 is abutted with push rod 7, and the other end offers guide groove 17.Engine working process
In, camshaft 9 rotates, and the cam on camshaft 9 pushes tappet 8 to move up, and push rod 7 is driven to move up, and presses valve rocker 1
One end move up, the other end of valve rocker 1 will do lower shifting movement accordingly around rocker arm shaft 6.
It includes: adjusting screw 2, guide runner 3, pull rod 4, driving mechanism 5, ball cup 15 and limited block that sliding block, which adjusts component,
16.Wherein, what guide runner 3 can slide is laid in guide groove 17, is connect by pull rod 4 with driving mechanism 5；Limited block 16
It is laid in the lower section of guide groove 17, ball cup 15 is laid in the lower section of limited block 16, and adjusting screw 2 is by guide runner 3, limited block
16 and ball cup 15 link together.Driving mechanism 5 pulls guide runner 3 to be moved forward and backward along guide groove 17 by pull rod 4.
Preferably, driving mechanism is servo motor, solenoid valve, hydraulic cylinder or pneumatic linear actuator.
Valve assembly includes: that valve 10, valve spring bases 11, air valve bridge guide rod 12, valve spring footstock 13 are gentle
The raft of pontoons 14.Air valve bridge guide rod 12 is fixed in cylinder head, and air valve bridge 14 is threaded through on air valve bridge guide rod 12, along air valve bridge
Guide rod 12 moves up and down, it is ensured that air valve bridge 14 is not tilted or isolated and fallen off during the work time.Air valve bridge 14 passes through
Air valve bridge top surface 18 is abutted with the ball cup 15 that sliding block adjusts component, and valve 10 is abutted with the bottom surface of air valve bridge 14, valve spring
Pedestal 11 and valve spring footstock 13 are laid in respectively on valve 10.Valve spring bases 11 are mounted on the corresponding seats of cylinder head
In.
As shown in Figure 3 and Figure 4, specific implementation process: valve rocker 1 is mounted on rocker arm shaft 6, is set in valve rocker 1
It is equipped with guide groove 17, guide runner 3 is installed in guide groove, below guide groove 17, is provided with limited block 16, by adjusting
Screw 2, by guide runner 3, limited block 16, ball cup 15 is attached.Guide runner 3 can the free skating in guide groove 17
It is dynamic.Driving mechanism 5 is installed on valve rocker 1, and pulls guide runner 3 to be moved forward and backward along guide groove 17 by pull rod 4.
Air valve bridge guide rod 12 is fixed in cylinder head, and air valve bridge 14 is moved up and down along air valve bridge guide rod 12, really
Air valve bridge 14 is protected not tilt or isolate and fall off during the work time.Valve spring bases 11 are mounted on the respective seat of cylinder head
Kong Zhong.
In engine working process, camshaft 9 rotates, and the cam on camshaft 9 pushes tappet 8 to move up, and drives
Push rod 7 moves up, and one end of press valve rocker 1 moves up, and the other end of valve rocker 1 will be done around rocker arm shaft 6 to be moved down accordingly
Movement, at this time the rocker arm ratio of valve rocker 1 or referred to as lever ratio be X:Y, by press limited block 16, press ball cup
15, air valve bridge 14 moves down, and helical spring is pressurized, and valve 10 is opened, after the cam on camshaft 9 turns over tappet 8,
Helical spring rebound, and valve rocker 1 is jacked up, the other end of valve rocker 1 moves down, and drives push rod 7, tappet 8, which synchronizes, to be moved down.
When the load of engine increases, distributive value increases, and when needing more air inlets, 5 pushing drawing rod 4 of driving mechanism stretches out one
Determine displacement, pull rod 4 pushes guide runner 3 to move forward along guide groove 17 is synchronous, it is assumed that leading δ, then rocker arm ratio at this time,
Or referred to as lever ratio is (X+ δ): Y, and compared to X:Y before, under the cam profile of identical camshaft 9, the lift amount of valve
Value added is δ: Y, and valve opening increases.When engine load reduces, distributive value is reduced, and the air inflow needed is reduced, driving
Mechanism 5 will retract 4 certain displacement amount of pull rod, and rocker arm ratio or lever ratio are (X- δ): Y at this time, and valve stroke reduction amount is δ: Y,
Valve opening reduces, and to form higher asthma intensity of flow, improves the tissue to charge air flow, improves efficiency of combustion.
To sum up, high speed engine continuous variable air valve lift range mechanism peculiar to vessel is on valve rocker by being arranged sliding block, with
And setting pulls sliding block to do the plunger type cylinder or servo motor to move linearly, changes valve rocker by pulling sliding block
Rocker Ratio, realization continuously adjust valve opening lift, and when valve stroke increases, inlet channel section or exhaust passage are cut
Face increases therewith, can improve air inlet deficiency problem and exhaust back pressure of the engine in middle low speed high load operating condition lower cylinder
Fuel consumption is reduced to improve the torque output of engine with the excessively high problem of row's temperature.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (5)
1. a kind of high speed engine continuous variable air valve lift range mechanism peculiar to vessel characterized by comprising
Rocker arm assembly comprising: valve rocker and rocker arm shaft, what the middle part of the valve rocker can rotate is threaded through rocker arm shaft
On, one end of the valve rocker is abutted with push rod, and the other end offers guide groove；
Sliding block adjusts component comprising: adjusting screw, guide runner, pull rod, driving mechanism and ball cup limited block, it is described to lead
It is laid in guide groove to what sliding block can slide, and is connect by pull rod with the driving mechanism；The adjusting screw will be led
It links together to sliding block and ball cup；The driving mechanism pulls guide runner to change along guide groove back-and-forth motion by pull rod
The Rocker Ratio of air valve variation rocker arm, realization continuously adjust valve opening lift；And
Valve assembly comprising: valve and air valve bridge, the air valve bridge are abutted by air valve bridge top surface with the ball cup, institute
Valve is stated to abut with the bottom surface of air valve bridge.
2. high speed engine continuous variable air valve lift range mechanism peculiar to vessel as described in claim 1, which is characterized in that the sliding block
Adjust component further include: limited block is laid in the lower section of the guide groove, connect by adjusting screw with guide runner.
3. high speed engine continuous variable air valve lift range mechanism peculiar to vessel as claimed in claim 2, which is characterized in that the driving
Mechanism is servo motor, solenoid valve, hydraulic cylinder or pneumatic linear actuator.
4. high speed engine continuous variable air valve lift range mechanism peculiar to vessel as described in claim 1, which is characterized in that the valve
Component further include: air valve bridge guide rod is fixed in cylinder head, and the air valve bridge is threaded through on air valve bridge guide rod, along
Air valve bridge guide rod moves up and down.
5. high speed engine continuous variable air valve lift range mechanism peculiar to vessel as claimed in claim 4, which is characterized in that the valve
Component further include: valve spring bases and valve spring footstock, the valve spring bases and valve spring footstock are laid in respectively
On valve, the valve spring bases are mounted in the corresponding seats of cylinder head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822076295.7U CN209067302U (en) | 2018-12-10 | 2018-12-10 | High speed engine continuous variable air valve lift range mechanism peculiar to vessel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822076295.7U CN209067302U (en) | 2018-12-10 | 2018-12-10 | High speed engine continuous variable air valve lift range mechanism peculiar to vessel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067302U true CN209067302U (en) | 2019-07-05 |
Family
ID=67101540
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822076295.7U Active CN209067302U (en) | 2018-12-10 | 2018-12-10 | High speed engine continuous variable air valve lift range mechanism peculiar to vessel |
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| CN (1) | CN209067302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322721A (en) * | 2018-12-10 | 2019-02-12 | 广西玉柴机器股份有限公司 | High speed engine continuous variable air valve lift range mechanism peculiar to vessel |
-
2018
- 2018-12-10 CN CN201822076295.7U patent/CN209067302U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322721A (en) * | 2018-12-10 | 2019-02-12 | 广西玉柴机器股份有限公司 | High speed engine continuous variable air valve lift range mechanism peculiar to vessel |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230109 Address after: No.88 Tianqiao West Road, Yulin City, Guangxi Zhuang Autonomous Region Patentee after: Guangxi Yuchai Ship Electric Power Co.,Ltd. Address before: 537005 No. 88 flyover West Road, the Guangxi Zhuang Autonomous Region, Yulin Patentee before: Guangxi Yuchai Machinery Co.,Ltd. |