CN110005499A - A kind of general type multi-mode valve actuating mechanism - Google Patents
A kind of general type multi-mode valve actuating mechanism Download PDFInfo
- Publication number
- CN110005499A CN110005499A CN201910236816.7A CN201910236816A CN110005499A CN 110005499 A CN110005499 A CN 110005499A CN 201910236816 A CN201910236816 A CN 201910236816A CN 110005499 A CN110005499 A CN 110005499A
- Authority
- CN
- China
- Prior art keywords
- cam
- exhaust
- air inlet
- driving member
- axle sleeve
- 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
-
- 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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- 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
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
-
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- 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
- 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
- F02D13/028—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation for two-stroke engines
-
- 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
- F02D13/04—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation using engine as brake
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
A kind of general type multi-mode valve actuating mechanism, belongs to engine braking field.The mechanism includes import/exhaust door component, import/exhaust camshaft, import/exhaust axle sleeve, switching mechanism etc..Air inlet axle sleeve at least provided in induction stroke at least with a raised air inlet driving cam, at least there is a raised air inlet brake cam near each lower dead center.Exhaust axle sleeve at least at least has a raised exhaust brake cam with a raised exhaust gas drive cam, in each near top dead center and exhaust bottom dead center at least provided in exhaust stroke.Air inlet axle sleeve and/or the exhaust also settable zero lift cam of axle sleeve.Mechanism realizes efficient two-stroke braking mode, improves engine brake power, and more common two-stroke braking improves 56% or so under high speed；103% or so are improved compared with pressure m；Braking of relatively losing heart improves 221% or so, and realizes braking by grades, effectively increases the safety and transport capacity of the vehicles such as lorry.
Description
Technical field
The present invention relates to a kind of general type multi-mode valve actuating mechanisms, belong to engine braking field.
Background technique
The long slope of China's road, abrupt slope are numerous, and truckload is higher than foreign standard, and overloading wagon hypervelocity problem is tight
Weight, these result in China's lorry responsibility road traffic accident and take place frequently, and especially big danger type traffic accident is mainly caused by truck.
The transmission systems retarder such as primary brake system and electromagnetic type, electric vortex type, which works long hours, to be easy because of braking work caused by overheating
The above problem is not present in the problems such as rate quickly reduces, engine braking.The braking power of two-stroke auxiliary braking technology is more existing
Four stroke braking technologies are high, are following development trends.Current two-stroke braking mostly uses hydraulic system greatly to realize, rings
It answers speed, each cylinder valve actuating mechanism to switch the problems such as synchronous, braking valve lifting curve is influenced by hydraulic characteristic and also limits hair
The raising of motivation performance.The present inventor in 2017 application patent (a kind of change mode valve mechanism, 2,017 1
Although 1219753.1) can realize two-stroke braking mode, for pressure m, braking of losing heart, braking power is able to substantially
The raising of degree, but for relatively large freight car braking demand, braking power still needs to be further increased.In addition, with hair
Motivation ownership sharply increases, and energy and environment problem has become one of the significant problem for restricting China's sustainable development.Goods
Although the engines ownership such as vehicle is few compared with gasoline engine, because of the reasons such as its single machine discharge capacity is big, mileage travelled length, fuel consumption
High and discharge is severe.Research shows that: by using cylinder stopping technique, it can significantly improve engine fuel economy and emission performance.
Therefore it develops a set of safe and reliable, switching quickly and can realize the general type that can increase substantially braking power of exchange-column shift
Multi-mode valve actuating mechanism is imperative.
Summary of the invention
It is an object of the invention to: by designing a kind of general type multi-mode valve actuating mechanism, for realizing :(a) in order to mention
The traffic safety of high vehicle needs general type multi-mode valve actuating mechanism to realize the reliable guarantor of drive mode and two-stroke braking mode
It holds and flexibly switches.(b) in order to reduce the oil consumption and discharge of engine, it is also necessary to which general type multi-mode valve actuating mechanism increases cylinder deactivation
Mode.(c) general type multi-mode valve actuating mechanism is needed to realize that the valve lift curve for each cylinder/respectively recycle has good consistent
Property, and do not change with the change of the factors such as temperature, engine speed.(d) need general type multi-mode valve actuating mechanism safe
Reliably, switching is quick and can realize the functions such as exchange-column shift.(e) need general type multi-mode valve actuating mechanism not by engine air
The limitation of door arrangement, has extremely wide applicability.
The technical scheme adopted by the invention is that: a kind of general type multi-mode valve actuating mechanism, it includes intake valve assembly, row
Valve assembly, inlet camshaft, inlet valve axle sleeve, air inlet driving member, exhaust camshaft, exhaust valve axle sleeve, exhaust-driven
Part and switching mechanism.
Inlet camshaft drives the rotation of inlet valve axle sleeve by spline, and exhaust camshaft drives exhaust valve by spline
Axle sleeve rotation.
Intake valve shaft is put at least provided with air inlet driving cam, air inlet brake cam, the first switching slot of air inlet and air inlet
Second switching slot.
Exhaust valve shaft is put at least provided with exhaust gas drive cam, exhaust brake cam, the first switching slot of exhaust and exhaust
Second switching slot.
Switching mechanism include at least the first switching mechanism of air inlet, the second switching mechanism of air inlet, exhaust the first switching mechanism and
It is vented the second switching mechanism.
Air inlet drives cam at least to have a protrusion in induction stroke, and air inlet brake cam is near each lower dead center
At least there is a protrusion, exhaust gas drive cam at least has a protrusion in exhaust stroke, and exhaust brake cam is each
Near top dead center and exhaust bottom dead center nearby at least have a protrusion.
Air inlet drives cam or air inlet brake cam to drive intake valve assembly by air inlet driving member.Exhaust gas drive cam or
Exhaust brake cam drives exhaust valve assemblies by exhaust-driven part.
Inlet valve axle sleeve is additionally provided with air inlet zero lift cam and/or exhaust valve axle sleeve to be additionally provided with exhaust zero lift convex
Wheel.The axle sleeve for being provided with zero lift cam adds a switching mechanism.
Integral structure can be used in first switching slot and the second switching slot, and split structure also can be used.
Settable one or more groups of cam sets on axle sleeve, cam set be by driving cam and brake cam cam set or by
Drive the cam set of cam, zero lift cam and brake cam.
The position of switching mechanism and the phase of switching slot can be adjusted according to the actual situation.
Air inlet driving member and exhaust-driven part are referred to as driving member, driving member can be used traditional rocker arm, very cup-rocker arm or
The very valve actuating mechanisms driving member such as cup-push rod-rocker arm, also settable air valve bridge, can also be used hydraulic between rocker arm and valve assembly
Principal and subordinate's piston type transmission mechanism, mechanical type lever or more bar transmission mechanisms etc..
The driving member drives valve assembly directly or by air valve bridge.
The phase of inlet camshaft and/or exhaust camshaft is adjusted using camshaft phase regulating mechanism.
Air inlet drives the axial position arbitrary arrangement of cam and air inlet brake cam, and exhaust gas drive cam and exhaust brake are convex
The axial position arbitrary arrangement of wheel is named as respectively left cam and right cam according to position.
When the cam of driving member being driven to be left cam, the work of the first switching mechanism drives the cam of driving member by left side
Cam switches to right cam.
When the cam of driving member being driven to be right cam, the work of the second switching mechanism drives the cam of driving member by right side
Cam switches to left cam.
Air inlet drives the axial position arbitrary arrangement of cam, air inlet zero lift cam and air inlet brake cam, exhaust gas drive
Cam, the axial position arbitrary arrangement for being vented zero lift cam and exhaust brake cam are named as respectively left side according to position
Cam, intermediate cam and right cam.
When the cam of driving member being driven to be intermediate cam, the work of the first switching mechanism drives the cam of driving member by centre
Cam switches to right cam.
When the cam of driving member being driven to be intermediate cam, the work of third switching mechanism drives the cam of driving member by centre
Cam switches to left cam.
When the cam of driving member being driven to be right cam, the work of the second switching mechanism drives the cam of driving member by right side
Cam switches to intermediate cam.
When the cam of driving member being driven to be left cam, the work of the second switching mechanism drives the cam of driving member by left side
Cam switches to intermediate cam.
The beneficial effects of the present invention are: this general type multi-mode valve actuating mechanism includes valve assembly, import/exhaust cam
Axis, import/exhaust axle sleeve, switching mechanism etc..(a) it realizes the reliable holding of drive mode and two-stroke braking mode and flexibly cuts
It changes, engine brake power has been significantly increased, it is left that the more common two-stroke braking mode of the lower braking power of high speed improves 56%
The right side, improves 103% or so compared with pressure m, and braking of relatively losing heart improves 221% or so, greatly improves vehicle driving safety and fortune
Movement Capabilities.(b) by adding zero lift cam, deactivation mode is realized, and then realize engine classification driving and grading system
It is dynamic, the oil consumption discharge of engine is reduced, and provide different braking power for vehicle, meets the system under vehicle difference operating condition
Dynamic demand.(c) implementation pattern switches by the way of mobile axle sleeve, realizes switching quickly and can realize the function such as exchange-column shift
Can, and realize that the valve lift curve for each cylinder/respectively recycle has good consistency, and not with temperature, engine speed
Etc. the change of factors and change.(d) mechanism is not limited by engine valve arrangement, has extremely wide applicability.
Detailed description of the invention
The present invention is further described with embodiment with reference to the accompanying drawing.
Fig. 1 is general type multi-mode valve actuating mechanism first embodiment schematic diagram.
Fig. 2 is first kind air inlet axle sleeve expanded schematic diagram.
Fig. 3 is first kind exhaust axle sleeve expanded schematic diagram.
Fig. 4 is general type multi-mode valve actuating mechanism second embodiment schematic diagram.
Fig. 5 is general type multi-mode valve actuating mechanism 3rd embodiment schematic diagram.
Fig. 6 is the second class air inlet axle sleeve expanded schematic diagram.
Fig. 7 is the second class exhaust axle sleeve expanded schematic diagram.
Fig. 8 is general type multi-mode valve actuating mechanism braking effect figure.
In figure: 101, exhaust camshaft；102, exhaust valve axle sleeve；103, exhaust-driven part；104, exhaust valve assemblies；
105, intake valve bridge；114, exhaust gas drive cam；112, exhaust brake cam；110, it is vented zero lift cam；121, it is vented
First switching mechanism；122, it is vented the second switching mechanism；123, it is vented third switching mechanism；131, it is vented the first switching slot；
132, it is vented the second switching slot；201, inlet camshaft；202, inlet valve axle sleeve；203, air inlet driving member；204, inlet valve
Component；205, exhaust valve bridge；214, air inlet drives cam；212, air inlet brake cam；210, air inlet zero lift cam；221,
The first switching mechanism of air inlet；222, the second switching mechanism of air inlet；223, air inlet third switching mechanism；231, air inlet first switches
Slot；232, the second switching slot of air inlet；3, camshaft phase regulating mechanism.
Specific embodiment
The present invention relates to a kind of general type multi-mode valve actuating mechanism, it include intake valve assembly 204, exhaust valve assemblies 104,
Inlet camshaft 201, inlet valve axle sleeve 202, air inlet driving member 203, exhaust camshaft 101, exhaust valve axle sleeve 102, row
Gas driving member 103 and switching mechanism.Inlet camshaft 201 drives inlet valve axle sleeve 202 to rotate by spline, and exhaust valve is convex
Wheel shaft 101 drives exhaust valve axle sleeve 102 to rotate by spline.
With reference to the accompanying drawing, structure is further described.
Embodiment 1
Fig. 1 is general type multi-mode valve actuating mechanism first embodiment schematic diagram.Fig. 2 and Fig. 3 is air inlet axle sleeve and exhaust shaft respectively
The expanded schematic diagram of set.
Air inlet driving cam 214, air inlet brake cam 212, the first switching slot of air inlet are provided on inlet valve axle sleeve 202
231 and the second switching slot of air inlet 232.Be provided on exhaust valve axle sleeve 102 exhaust gas drive cam 114, exhaust brake cam 112,
It is vented the second switching slot 132 of the first switching slot 131 and exhaust.Switching mechanism includes the first switching mechanism of air inlet 221, air inlet second
The second switching mechanism 122 of switching mechanism 222, the first switching mechanism 121 of exhaust and exhaust.Air inlet drives cam 214 to rush in air inlet
There is a protrusion, air inlet brake cam 212 has a protrusion, exhaust gas drive cam 114 near each lower dead center in journey
There is a protrusion in exhaust stroke, exhaust brake cam 112 has near each near top dead center and exhaust bottom dead center
One protrusion.Driving member uses the rocker arm with roller.Rocker arm drives a pair of of valve assembly by air valve bridge.Air inlet drives cam
214 or air inlet brake cam 212 by air inlet driving member 203 drive intake valve assembly 204.Exhaust gas drive cam 114 or exhaust
Brake cam 112 drives exhaust valve assemblies 104 by exhaust-driven part 103.Its working method is:
The cam of driving air inlet driving member 203 is air inlet driving cam 214, when the first switching mechanism of air inlet 221 works, air inlet the
One switching mechanism 221 is matched with the first switching slot of air inlet 231, the cam of air inlet driving member 203 will be driven to be driven by air inlet convex
Wheel 214 switches to air inlet brake cam 212.
The cam of driving air inlet driving member 203 is air inlet brake cam 212, when the second switching mechanism of air inlet 222 works, into
The second switching mechanism of gas 222 is matched with the second switching slot of air inlet 232, and the cam of air inlet driving member 203 will be driven by air inlet system
Moving cam 212 switches to air inlet driving cam 214.
The cam for driving exhaust-driven part 103 is exhaust gas drive cam 114, when the first switching mechanism 121 of exhaust works, row
The first switching mechanism of gas 121 is matched with the first switching slot 131 of exhaust, and the cam of exhaust-driven part 103 will be driven to be driven by exhaust
Moving cam 114 switches to exhaust brake cam 112.
The cam for driving exhaust-driven part 103 is exhaust brake cam 112, when the second switching mechanism 122 of exhaust works, row
The second switching mechanism of gas 122 is matched with the second switching slot 132 of exhaust, and the cam of exhaust-driven part 103 will be driven to be made by exhaust
Moving cam 112 switches to exhaust gas drive cam 114.
Split mechanism also can be used in first switching slot and the second switching slot, in addition, the position of switching mechanism can also basis
Actual conditions are adjusted.
Embodiment 2
Fig. 4 is general type multi-mode valve actuating mechanism second embodiment schematic diagram.For embodiment 1, embodiment 2 is shaken using branch
Arm drives a pair of of valve assembly.
Embodiment 3
Fig. 5 is general type multi-mode valve actuating mechanism second embodiment schematic diagram.Fig. 6 and Fig. 7 is air inlet axle sleeve and exhaust shaft respectively
The expanded schematic diagram of set.Air inlet driving cam 214, air inlet zero lift cam 210, air inlet system are provided on inlet valve axle sleeve 202
Moving cam 212, the first switching slot of air inlet 231 and the second switching slot of air inlet 232.Exhaust gas drive is provided on exhaust valve axle sleeve 102
Cam 114, exhaust zero lift cam 110, the second switching slot of exhaust brake cam 112, the first switching slot 131 of exhaust and exhaust
132.The phase of inlet camshaft 201 is adjusted by camshaft phase regulating mechanism 3.Switching mechanism includes the first switching machine of air inlet
Structure 221, the second switching mechanism of air inlet 222, air inlet third switching mechanism 223, the first switching mechanism 121 of exhaust, exhaust second are cut
Change planes structure 122 and exhaust third switching mechanism 123.Air inlet drives cam 214 to have a protrusion, air inlet system in induction stroke
Moving cam 212 has a protrusion near each lower dead center, and exhaust gas drive cam 114 is convex with one in exhaust stroke
It rises, exhaust brake cam 112 has a protrusion near each near top dead center and exhaust bottom dead center.Driving member uses band rolling
The rocker arm of son.Air inlet drives cam 214, air inlet zero lift cam 210 or air inlet brake cam 212 to pass through air inlet driving member 203
Drive intake valve assembly 204.Exhaust gas drive cam 114, exhaust zero lift cam 110 or exhaust brake cam 112 pass through exhaust
Driving member 103 drives exhaust valve assemblies 104.Its working method is:
The cam for driving air inlet driving member 203 is air inlet zero lift cam 210, when the first switching mechanism of air inlet 221 works, air inlet
First switching mechanism 221 is matched with the first switching slot of air inlet 231, and the cam of air inlet driving member 203 will be driven by zero liter of air inlet
Journey cam 210 switches to air inlet brake cam 212；
The cam for driving air inlet driving member 203 is air inlet zero lift cam 210, when air inlet third switching mechanism 223 works, air inlet
Third switching mechanism 223 is matched with the second switching slot of air inlet 232, and the cam of air inlet driving member 203 will be driven by zero liter of air inlet
Journey cam 210 switches to air inlet driving cam 214；
The cam for driving air inlet driving member 203 is air inlet brake cam 212, when the second switching mechanism of air inlet 222 works, air inlet the
Two switching mechanisms 222 are matched with the second switching slot of air inlet 232, the cam of air inlet driving member 203 will be driven to be braked by air inlet convex
Wheel 212 switches to air inlet zero lift cam 210；
The cam for driving air inlet driving member 203 is that air inlet drives cam 214, when the second switching mechanism of air inlet 222 works, air inlet the
Two switching mechanisms 222 are matched with the first switching slot of air inlet 231, the cam of air inlet driving member 203 will be driven to be driven by air inlet convex
Wheel 214 switches to air inlet zero lift cam 210；
The cam for driving exhaust-driven part 103 is exhaust zero lift cam 110, when the first switching mechanism 121 of exhaust works, exhaust
First switching mechanism 121 is matched with the first switching slot 131 of exhaust, and the cam of exhaust-driven part 103 will be driven by zero liter of exhaust
Journey cam 110 switches to exhaust brake cam 112；
The cam for driving exhaust-driven part 103 is exhaust zero lift cam 110, when exhaust third switching mechanism 123 works, exhaust
Third switching mechanism 123 is matched with the second switching slot 132 of exhaust, and the cam of exhaust-driven part 103 will be driven by zero liter of exhaust
Journey cam 110 switches to exhaust gas drive cam 114；
The cam for driving exhaust-driven part 103 is exhaust brake cam 112, when exhaust the second switching mechanism 122 work, exhaust the
Two switching mechanisms 122 are matched with the second switching slot 132 of exhaust, the cam of exhaust-driven part 103 will be driven convex by exhaust brake
Wheel 112 switches to exhaust zero lift cam 110；
The cam for driving exhaust-driven part 103 is exhaust gas drive cam 114, when exhaust the second switching mechanism 122 work, exhaust the
Two switching mechanisms 122 are matched with the first switching slot 131 of exhaust, the cam of exhaust-driven part 103 will be driven convex by exhaust gas drive
Wheel 114 switches to exhaust zero lift cam 110.
Fig. 8 general type multi-mode valve actuating mechanism braking effect figure.(exhaust of exhaust brake cam is lower only for mechanism and former scheme
Point does not have protrusion nearby) it is two-stroke braking mode, mechanism realizes engine brake power and is significantly mentioned
Height, the lower braking power of high speed improve 56% or so；103% or so are improved compared with pressure m；Braking of relatively losing heart improves 221% or so.
This is extremely advantageous to the raising of vehicle driving safety and transport capacity.
Claims (7)
1. a kind of general type multi-mode valve actuating mechanism, it includes intake valve assembly (204), exhaust valve assemblies (104), feature
Be: it further includes inlet camshaft (201), inlet valve axle sleeve (202), air inlet driving member (203), exhaust camshaft
(101), exhaust valve axle sleeve (102), exhaust-driven part (103) and switching mechanism；
The inlet camshaft (201) drives inlet valve axle sleeve (202) rotation by spline, and exhaust camshaft (101) is logical
It crosses spline and drives exhaust valve axle sleeve (102) rotation；
At least provided with air inlet driving cam (214), air inlet brake cam (212), air inlet the on the inlet valve axle sleeve (202)
One switching slot (231) and the second switching slot of air inlet (232)；
At least provided with exhaust gas drive cam (114), exhaust brake cam (112), exhaust the on the exhaust valve axle sleeve (102)
One switching slot (131) and exhaust the second switching slot (132)；
The switching mechanism includes at least the first switching mechanism of air inlet (221), the second switching mechanism of air inlet (222), exhaust first
Switching mechanism (121) and exhaust the second switching mechanism (122)；
Air inlet driving cam (214) at least has a protrusion in induction stroke, and air inlet brake cam (212) is each
Lower dead center nearby at least has a protrusion, and exhaust gas drive cam (114) at least has a protrusion, exhaust in exhaust stroke
Brake cam (112) at least has a protrusion near each near top dead center and exhaust bottom dead center；
Air inlet driving cam (214) or air inlet brake cam (212) pass through air inlet driving member (203) driving intake valve assembly
(204)；The exhaust gas drive cam (114) or exhaust brake cam (112) pass through exhaust-driven part (103) driving exhaust valve group
Part (104).
2. general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: the inlet valve axle sleeve (202) is also
It is provided with air inlet zero lift cam (210) and/or exhaust valve axle sleeve (102) is additionally provided with exhaust zero lift cam (110)；It is described
The axle sleeve for being provided with zero lift cam adds a switching mechanism.
3. general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: air inlet driving member (203) and exhaust
Driving member (103) is referred to as driving member, and the driving member uses rocker arm, very cup-rocker arm or very cup-push rod-rocker arm driver
Structure or driving member use Hydraulic Main from piston type transmission mechanism, mechanical type lever or more bar transmission mechanisms.
4. general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: the driving member is directly or by gas
The raft of pontoons drives valve assembly.
5. general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: the inlet camshaft (201)
And/or the phase of exhaust camshaft (101) is adjusted using camshaft phase regulating mechanism.
6. the working method of general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: the mechanism has drive
Moving cam and brake cam；The axial position arbitrary arrangement of the air inlet driving cam (214) and air inlet brake cam (212),
The axial position arbitrary arrangement of exhaust gas drive cam (114) and exhaust brake cam (112) is respectively left side according to position name
Cam and right cam；
When the cam of driving member being driven to be left cam, the work of the first switching mechanism drives the cam of driving member by left cam
Switch to right cam；
When the cam of driving member being driven to be right cam, the work of the second switching mechanism drives the cam of driving member by right cam
Switch to left cam.
7. the working method of general type multi-mode valve actuating mechanism according to claim 1, it is characterized in that: the mechanism has drive
Moving cam, zero lift cam and brake cam；
The axial position of air inlet driving cam (214), air inlet zero lift cam (210) and air inlet brake cam (212) is appointed
Meaning arrangement, the axial position of exhaust gas drive cam (114), exhaust zero lift cam (110) and exhaust brake cam (112) are any
Arrangement, is named as respectively left cam, intermediate cam and right cam according to position；
When the cam of driving member being driven to be intermediate cam, the work of the first switching mechanism drives the cam of driving member by intermediate cam
Switch to right cam；
When the cam of driving member being driven to be intermediate cam, the work of third switching mechanism drives the cam of driving member by intermediate cam
Switch to left cam；
When the cam of driving member being driven to be right cam, the work of the second switching mechanism drives the cam of driving member by right cam
Switch to intermediate cam；
When the cam of driving member being driven to be left cam, the work of the second switching mechanism drives the cam of driving member by left cam
Switch to intermediate cam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236816.7A CN110005499A (en) | 2019-03-27 | 2019-03-27 | A kind of general type multi-mode valve actuating mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910236816.7A CN110005499A (en) | 2019-03-27 | 2019-03-27 | A kind of general type multi-mode valve actuating mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110005499A true CN110005499A (en) | 2019-07-12 |
Family
ID=67168437
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910236816.7A Pending CN110005499A (en) | 2019-03-27 | 2019-03-27 | A kind of general type multi-mode valve actuating mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110005499A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007002802A1 (en) * | 2007-01-18 | 2008-07-24 | Audi Ag | Valve train changing method for internal combustion engine, involves shifting cam carrier between axial position, which is assigned to two stroke operation, and another axial position, which is assigned to four-stroke operation |
| CN104136724A (en) * | 2012-02-21 | 2014-11-05 | 戴姆勒股份公司 | Internal combustion engine valve drive adjustment device |
| CN107060940A (en) * | 2017-06-07 | 2017-08-18 | 大连理工大学 | A kind of multi-mode valve-driving system |
| CN107060941A (en) * | 2017-06-07 | 2017-08-18 | 大连理工大学 | A kind of twin cam shaft switch fulcrum type becomes pattern valve-driving system |
-
2019
- 2019-03-27 CN CN201910236816.7A patent/CN110005499A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007002802A1 (en) * | 2007-01-18 | 2008-07-24 | Audi Ag | Valve train changing method for internal combustion engine, involves shifting cam carrier between axial position, which is assigned to two stroke operation, and another axial position, which is assigned to four-stroke operation |
| CN104136724A (en) * | 2012-02-21 | 2014-11-05 | 戴姆勒股份公司 | Internal combustion engine valve drive adjustment device |
| CN107060940A (en) * | 2017-06-07 | 2017-08-18 | 大连理工大学 | A kind of multi-mode valve-driving system |
| CN107060941A (en) * | 2017-06-07 | 2017-08-18 | 大连理工大学 | A kind of twin cam shaft switch fulcrum type becomes pattern valve-driving system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104481628A (en) | Mechanical connection type engine integration rocker arm brake device with valve lift reset function | |
| CN108049931B (en) | Variable-mode continuously variable valve mechanism | |
| CN109779716B (en) | Compact movable driving fulcrum | |
| CN109854325B (en) | Two-stroke auxiliary braking mechanism | |
| CN109973168A (en) | A kind of full changeable mechanism of multi-mode | |
| CN102787879B (en) | A kind of engine air distribution system valve lift continuous variable mechanism | |
| CN110005499A (en) | A kind of general type multi-mode valve actuating mechanism | |
| CN105507974A (en) | Auxiliary valve actuating mechanism of engine | |
| CN204851355U (en) | A integrated form rocking arm for producing engine brake | |
| CN203626910U (en) | Exhaust brake linking mechanism for engine | |
| CN104590012B (en) | Vehicle creep control system and its clutch | |
| CN109915223A (en) | A kind of highly reliable multi-mode valve actuating mechanism of compact | |
| CN109958494A (en) | A kind of compact high efficient multi-mode valve actuating mechanism | |
| CN108071442B (en) | Variable-mode valve mechanism | |
| CN108071444A (en) | A kind of change mode continuous variable valve actuator for air | |
| CN204098976U (en) | Motor auxiliary valve driving mechanism | |
| CN208982134U (en) | The auxiliary brake mechanism of medium and heavy engine | |
| CN109736912B (en) | Multi-mode valve mechanism and control method thereof | |
| CN209818130U (en) | Two-stroke auxiliary braking mechanism | |
| CN208010420U (en) | Realize the engine braking apparatus of three-stage brake performance | |
| CN105927395A (en) | Multi-mode type internal combustion engine and control method thereof | |
| CN109488405B (en) | Multi-mode valve mechanism and control method thereof | |
| CN109488403B (en) | Multi-mode valve mechanism and control method thereof | |
| CN109488404A (en) | A kind of multi-mode valve actuating mechanism and its control method | |
| CN109458238B (en) | Multi-mode valve mechanism and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20190712 |