CN108868944A - Engine variable valve lift device - Google Patents
Engine variable valve lift device Download PDFInfo
- Publication number
- CN108868944A CN108868944A CN201710351386.4A CN201710351386A CN108868944A CN 108868944 A CN108868944 A CN 108868944A CN 201710351386 A CN201710351386 A CN 201710351386A CN 108868944 A CN108868944 A CN 108868944A
- Authority
- CN
- China
- Prior art keywords
- rocker arm
- valve
- shaft
- elongated slot
- arm shaft
- Prior art date
- 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.)
- Pending
Links
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
- 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
- F01L13/0021—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 by modification of rocker arm ratio
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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
- F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D2013/0296—Changing the valve lift only
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
The variable air valve lift apparatus of inventive engine is related to engines distribution technical field.Axle sleeve is installed between rocker arm shaft and rocker arm, inner hole of shaft sleeve and rocker arm shaft activity cooperate, the rocker arm elongated slot activity being arranged on the upper and lower outerplanar of axle sleeve and rocker arm cooperates, the rocker arm support elongated slot activity cooperation being arranged on the lower planes and rocker arm support at rocker arm shaft both ends, the position of rocker arm limited block limitation rocker arm, has nut active link fixed on threaded motor shaft and the U-shaped fork of rocker arm axis connection, by the relative position for controlling motor shaft and nut, and then control relative position of the rocker arm shaft in rocker arm support elongated slot and rocker arm elongated slot, the final size for changing valve stroke, realize best power source matching of the vehicle under various operating conditions and load.
Description
Technical field
Inventive engine variable air valve lift apparatus is related to engines distribution technical field, can more particularly to engine
Air valve variation lift technology field.
Background technique
For traditional engine in order to make air inflow under full working scope and fuel oil reach equilibrium state, its valve stroke is solid
Fixed constant, this not only causes engine and must all arrive good response in high velocity and low regime, fuel economy
Also good index is not achieved.
How to improve intake efficiency is the important directions and means for promoting conventional engine engine efficiency.People are in order to make to send out
Motivation can match suitable valve stroke under different rotating speeds, propose engine variable valve lift technology, make the slow-speed of revolution
Lower torque is abundant, and horsepower is powerful when high revolving speed.Lesser valve stroke is used when the slow-speed of revolution, is conducive to increase so disorderly in cylinder
Stream improves burning velocity, increases the low speed torque of engine, and then can significantly be mentioned when high revolving speed using biggish valve stroke
High air inflow, and then power output when the high revolving speed of promotion realize best power source matching of the vehicle under various operating conditions and load,
The power of engine, economy, discharge are promoted to a new height.
But existing engine variable valve lift technology first is that in the presence of structure is complicated, it is at high cost, be unable to reach it is universal
The defect of application, second is that being to all valves while to control, cannot being directed to each when the valve for cylinder is controlled
A valve is individually controlled, and which has limited the further exploitations of engine potentiality.
Summary of the invention
In order to reduce the cost of engine variable valve lift technology, make it possible to be generalizable, and can be with needle
Each valve is individually controlled, so as to match simultaneously with other power-saving technologies of engine, makes engine fuel
Economy is further enhanced, and the present invention proposes a kind of engine variable valve lift device, mainly there is valve lifter, gas
Door, rocker arm, rocker arm support, rocker arm shaft, rocker arm limited block, control motor form, it is characterized in that：Pacify between rocker arm shaft and rocker arm
Axle sleeve is filled, inner hole of shaft sleeve and rocker arm shaft activity cooperate, and the rocker arm elongated slot activity that axle sleeve is arranged on outerplanar and rocker arm up and down cooperates,
The rocker arm support elongated slot activity cooperation being arranged on the lower planes and rocker arm support at rocker arm shaft both ends, the limitation of rocker arm limited block are shaken
The position of arm, control motor have threaded motor shaft and the nut active link with fixation on the U-shaped fork of rocker arm axis connection, gas
In the kinetic system that stile bar, rocker arm, valve form, rocker arm shaft is fulcrum, and valve lifter rising makes valve decline open valve, empty
Gas enters cylinder, and the active force of valve spring makes valve rise closing valve, and control motor drives rocker arm shaft long in rocker arm support
It moves, changes in the kinetic system of valve lifter, rocker arm, valve composition as the position of the rocker arm shaft of fulcrum in slot and rocker arm elongated slot
It sets, is changed valve stroke.
Due to taking the above technical measures, make valve stroke that can make continuous electrodeless change within a certain area, it can be with
The air inflow and fuel oil for making engine are adapted from different operating conditions, reach preferable fuel economy, power adaptability,
And discharge is improved.The configuration of the present invention is simple can carry out while control to all valves, can also be directed to each valve
Individually controlled, can by lift range variable technology and open cylinder control cylinder deactivation oil-break technology on an engine simultaneously
It realizes, further increases fuel economy.
Figure of description
Attached drawing 1 is the main view of schematic structural view of the invention.
Attached drawing 2 is the top view of schematic structural view of the invention.
Attached drawing 3 is the fit structure schematic diagram of rocker arm in the present invention, rocker arm shaft and axle sleeve.
Specific embodiment
In Fig. 3, axle sleeve 11 is installed between rocker arm shaft 3 and rocker arm 2,11 inner hole of axle sleeve and 3 activity of rocker arm shaft cooperate, axle sleeve 11
14 activity of rocker arm elongated slot being arranged on upper and lower outerplanar and rocker arm 3 cooperates, in Fig. 1 and Fig. 2, the lower planes at 3 both ends of rocker arm shaft
Cooperate with 13 activity of rocker arm support elongated slot being arranged on rocker arm support 4, rocker arm limited block 12 limits the position of rocker arm 2, control
Fixed 8 active link of nut, valve are endured on the threaded motor shaft 9 of tool of motor 10 and the U-shaped fork 7 connecting with rocker arm shaft 3
In the kinetic system that bar 1, rocker arm 2, valve 5 form, rocker arm shaft 3 is fulcrum, and the rising of valve lifter 1 makes the decline of valve 5 open valve
5, air enters cylinder, and the active force of valve spring 6 makes valve 5 rise closing valve 5, when the piston in cylinder is in
Compression, acting and when instroke, valve lifter 1 and valve spring 6 to rocker arm shaft 3 all without there is active force, at this point, controlling motor
10 work have threaded motor shaft 9 and nut 8 fixed on U-shaped fork 7 are driven to move, and then U-shaped fork 7 and rocker arm shaft 3 will join
It is dynamic, change relative position of the rocker arm shaft 3 in rocker arm support elongated slot 13 and rocker arm elongated slot 14, that is, change valve lifter 1,
As the position of the rocker arm shaft 3 of fulcrum in the kinetic system that rocker arm 3, valve 5 form, it is changed the lift of valve 5.
The present invention utilizes simple principle and structure, and the company of valve stroke is realized using the combination of a set of swivel nut and screw rod
Continue adjustable, in system work, control motor is controlled and shaken by the relative position of ECU signal control motor axis and nut
Relative position of the arm axle in rocker arm support elongated slot and rocker arm elongated slot, the final size for changing valve stroke can allow engine
Fast feedback is made to the intention of driver, the accurate control carried out by engine management system to valve stroke is realized
Best power source matching of the vehicle under the various operating conditions and load.
Claims (1)
1. a kind of engine variable valve lift device mainly has valve lifter, valve, rocker arm, rocker arm support, rocker arm shaft, shakes
Arm limited block, control motor form, it is characterized in that：Axle sleeve is installed, inner hole of shaft sleeve and rocker arm shaft are living between rocker arm shaft and rocker arm
Dynamic cooperation, the rocker arm elongated slot activity that axle sleeve is arranged on outerplanar and rocker arm up and down cooperate, the lower planes at rocker arm shaft both ends with shake
The rocker arm support elongated slot activity cooperation being arranged on arm support, rocker arm limited block limit the position of rocker arm, and control motor has spiral shell
The motor shaft of line and with nut active link fixed on the U-shaped fork of rocker arm axis connection, valve lifter, rocker arm, valve composition
In kinetic system, rocker arm shaft is fulcrum, and valve lifter rising makes valve decline open valve, and air enters cylinder, valve spring
Active force makes valve rise closing valve, and control motor drives rocker arm shaft to move in rocker arm support elongated slot and rocker arm elongated slot, changes
As the position of the rocker arm shaft of fulcrum in the kinetic system that air valve variation tappet, rocker arm, valve form, it is changed valve stroke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351386.4A CN108868944A (en) | 2017-05-09 | 2017-05-09 | Engine variable valve lift device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710351386.4A CN108868944A (en) | 2017-05-09 | 2017-05-09 | Engine variable valve lift device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108868944A true CN108868944A (en) | 2018-11-23 |
Family
ID=64320836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710351386.4A Pending CN108868944A (en) | 2017-05-09 | 2017-05-09 | Engine variable valve lift device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108868944A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339097A (en) * | 2021-07-06 | 2021-09-03 | 河南柴油机重工有限责任公司 | Air valve control device with continuously variable displacement and engine |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005171922A (en) * | 2003-12-12 | 2005-06-30 | Nippon Piston Ring Co Ltd | Variable valve mechanism |
| CN103016091A (en) * | 2012-12-31 | 2013-04-03 | 长城汽车股份有限公司 | Adjusting device of variable valve lift mechanism and variable valve lift mechanism |
| CN103775154A (en) * | 2014-01-26 | 2014-05-07 | 天津大学 | Hydraulic type variable valve rocker system |
| CN204082247U (en) * | 2014-06-04 | 2015-01-07 | 常熟理工学院 | A kind of lift range variable regulating device |
| CN204082245U (en) * | 2014-09-24 | 2015-01-07 | 成都航空职业技术学院 | The electrodeless variable valve gear of a kind of motor |
| CN104675469A (en) * | 2013-12-03 | 2015-06-03 | 比亚迪股份有限公司 | Engine valve mechanism |
-
2017
- 2017-05-09 CN CN201710351386.4A patent/CN108868944A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005171922A (en) * | 2003-12-12 | 2005-06-30 | Nippon Piston Ring Co Ltd | Variable valve mechanism |
| CN103016091A (en) * | 2012-12-31 | 2013-04-03 | 长城汽车股份有限公司 | Adjusting device of variable valve lift mechanism and variable valve lift mechanism |
| CN103016091B (en) * | 2012-12-31 | 2015-02-04 | 长城汽车股份有限公司 | Adjusting device of variable valve lift mechanism and variable valve lift mechanism |
| CN104675469A (en) * | 2013-12-03 | 2015-06-03 | 比亚迪股份有限公司 | Engine valve mechanism |
| CN103775154A (en) * | 2014-01-26 | 2014-05-07 | 天津大学 | Hydraulic type variable valve rocker system |
| CN204082247U (en) * | 2014-06-04 | 2015-01-07 | 常熟理工学院 | A kind of lift range variable regulating device |
| CN204082245U (en) * | 2014-09-24 | 2015-01-07 | 成都航空职业技术学院 | The electrodeless variable valve gear of a kind of motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113339097A (en) * | 2021-07-06 | 2021-09-03 | 河南柴油机重工有限责任公司 | Air valve control device with continuously variable displacement and engine |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181123 |