CN102400731B - Cylinder-deactivation tappet device of engine - Google Patents
Cylinder-deactivation tappet device of engine Download PDFInfo
- Publication number
- CN102400731B CN102400731B CN201010281937.2A CN201010281937A CN102400731B CN 102400731 B CN102400731 B CN 102400731B CN 201010281937 A CN201010281937 A CN 201010281937A CN 102400731 B CN102400731 B CN 102400731B
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- lock pin
- deactivation
- cylinder
- engine
- housing
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Abstract
The invention relates to a cylinder-deactivation tappet device of an engine. The cylinder-deactivation tappet device comprises a shell, a bracket and lock pin components, wherein the shell covers a valve mechanism, the upper end of the shell is closed, and the shell is contacted with a cam; at least two openings are arranged on the side wall of the shell; the bracket is arranged inside the shell, and one end of the bracket is pressed against a valve rod of the valve mechanism by using a first elastic part which is clamped between the bracket and the shell; and the lock pin components are arranged in each opening and constructed to be in contact fit with the bracket during normal operation of the engine to keep the shell and the bracket from relatively moving, and during cylinder deactivation of the engine, the lock pin components are separated from the bracket to make the shell capable of moving relative to the bracket under the action of the cam. By adoption of the cylinder-deactivation tappet device of the engine, long-lift and zero-lift two-stage adjustment of valve lift can be realized, so that valve movement can be stopped when necessary so as to cause cylinder deactivation of the engine to reduce oil consumption and discharge of harmful gas; and an original tappet can be directly replaced with the cylinder-deactivation tappet device without replacement of a cylinder cover of the engine. Therefore, the cylinder-deactivation tappet device is good in technical expansibility and high in practical value.
Description
[technical field]
The present invention relates to tappet device, relate in particular to and can realize valve mechanism lift at long lift and the adjustable cylinder-deactivation tappet device of engine of zero lift two-stage, the invention belongs to automobile technical field.
[background technique]
In order to guarantee that automobile possesses and has sufficient power when accelerating or climb, need to when design, be that motor reserves stand-by power.The operating mode that will cause motor to be often in low-load is like this carried out work, thereby exists the problems such as efficiency is low, oil consumption is high.To this, can adopt motor cylinder stopping technique to solve." motor cylinder deactivation " refer to and stop cylinder under specific operation in the work of some cylinder, make valve stop motion simultaneously, so in order to guarantee that the gross output of motor remains unchanged, working cylinder just must move under high load situation, now engine air throttle aperture is large, pumping loss is little and the thermal efficiency is high, thereby can reduce oil consumption.Impel the out-of-work means of cylinder normally to stop oil spout and inlet and exhaust valve motion, therefore need special entity realize valve stop motion and can make it rework.
The disclosed patent that relates to motor cylinder stopping technique is substantially all for rocking arm type valve mechanism at present, because with respect to directly drive the valve mechanism of tappet by cam for; process that the camming movement of rocking arm type valve mechanism is delivered to valve motion is long, part is more; this makes its institute aspect installation dimension restricted less, and it is more and be easy to realize correspondingly to realize the technological scheme of motor cylinder deactivation.Yet, for cam, directly drive tappet type valve mechanism, because its part is few, installing space is little, so realize motor, to endure the technical difficulty of cylinder large.
[summary of the invention]
In view of this, the object of the present invention is to provide a kind of cylinder-deactivation tappet device of engine of structural design uniqueness, it is adjustable in long lift and zero lift two-stage that it can directly drive tappet type valve mechanism to realize its lift for cam, thereby can solve the above-mentioned problems in the prior art.
For achieving the above object, the technical solution used in the present invention is as follows:
, it comprises:
Housing, it covers on valve mechanism and its upper end closed and contacting with cam, and the sidewall of described housing is provided with at least two openings;
Support, it is installed in the inside of described housing, and its one end is resisted against on the valve stem of described valve mechanism by the first elastic member being located between this support and described housing; And
Lock pin assembly, it is installed in described in each in opening and is configured to contact with described support when engine work and coordinates to stop described housing and support to produce relative movement, is separated with described support so that described housing can be under described cam wheel and support generation relative movement when motor cylinder deactivation.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described lock pin assembly comprises:
Lock pin lining, it is installed in described opening and has closed end and towards the opening end of described enclosure interior;
Lock pin, it has first end and the second end, described first end is closely sheathed in described lock pin lining and can be slided, described the second end towards the opening end of described lock pin lining and and the inwall of described lock pin lining between form cavity;
Lock pin Sealing, it is arranged at the opening end of described lock pin lining and matches that with the second end of described lock pin described cavity is sealed, and is filled with hydraulic transmission liquid in described cavity; And
The second elastic member, it is installed between the closed end and described lock pin of described lock pin bush inside.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described support is provided with the first protuberance, and it is configured to:
When engine work, via described hydraulic transmission, with the active force that liquid and described the second elastic member apply described lock pin respectively, reaching after balance, by described the first protuberance, contacted with described lock pin and coordinate to stop described housing and described support to produce relative movement; And
When motor cylinder deactivation, under the active force respectively described lock pin being applied with liquid and described the second elastic member via described hydraulic transmission, described the first protuberance and described lock pin are separated so that described housing can produce relative movement with described support under described cam wheel.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described lock pin lining is provided with the second protuberance, and it is configured to:
When motor cylinder deactivation, at described the first protuberance and described lock pin, be separated and make after described housing and described support generation relative movement, the cooperation that contacted with described the first protuberance by described the second protuberance is to limit the relative movement distance between described housing and described support.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described hydraulic transmission liquid is hydraulic oil.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described housing and/or described lock pin lining are cylindric.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described opening is provided with 2, and it is radially symmetricly set on described housing.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described opening is provided with 3, and it is along being circumferentially symmetricly set on described housing.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described housing has symplex structure, and described the first elastic member is installed on the central axis of described housing.
In above-mentioned cylinder-deactivation tappet device of engine, preferably, described the first elastic member and/or described the second elastic member are Compress Spring.
Beneficial effect of the present invention is: this cylinder-deactivation tappet device of engine has unique project organization, adopting it can realize engine breathing door opens and closes for a long time two-stage adjusting normal, thereby can by stopping valve motion, realize motor cylinder deactivation when needed, to reduce oil consumption, to reduce noxious gas emission.This cylinder-deactivation tappet device of engine can be applied in valve mechanism that cam overhead directly drives tappet, to directly replace original tappet without changing former engine cylinder cover, so the present invention's significant advantages such as favorable expandability, use value is high, using effect is good that possess skills.
[accompanying drawing explanation]
Below with reference to drawings and Examples, technological scheme of the present invention is described in further detail.Wherein:
Fig. 1 is the stereochemical structure decomposition view of a preferred embodiment of cylinder-deactivation tappet device of engine of the present invention;
Fig. 2 is preferred embodiment in Fig. 1 cross-sectional schematic after integral body assembling;
Fig. 3 is preferred embodiment in Fig. 1 working state schematic representation when engine work;
Fig. 4 is preferred embodiment in Fig. 1 working state schematic representation when motor cylinder deactivation; And
Fig. 5 is that the valve lift curve of the preferred embodiment in Fig. 1 changes schematic diagram.
Description of reference numerals:
1 housing 2 lock pin linings
3 second elastic member 4 lock pins
5 lock pin Sealing 6 first elastic members
7 support 8 openings
9 valve stem 10 valve spring
11 cotter seat 12 lock pin assemblies
21 second protuberance 22 cavitys
41 first end 42 second ends
71 first protuberances
[embodiment]
Please refer to Fig. 1 and Fig. 2, they have schematically demonstrated the general structure of a preferred embodiment of cylinder-deactivation tappet device of engine of the present invention.In this preferred embodiment, cylinder-deactivation tappet device of engine mainly comprises housing 1, support 7 and lock pin assembly 12, below will be elaborated to these constituent elementss.
As shown in Figure 2, housing 1 is located on valve mechanism, and the upper end of housing 1 is enclosed construction and contacting with the cam on valve transmission group camshaft, has also radially been symmetrical arranged two openings 8 simultaneously on the sidewall of housing 1.In some other unshowned embodiment, above-mentioned opening can also be set according to actual needs and flexibly, for example can be along housing 1 be circumferentially symmetrical arranged 3,4 or more openings.
In this cylinder-deactivation tappet device of engine, lock pin assembly 12 is one of its important composition parts.In general, it is be designed to be installed in each opening 8 and be configured to have following functions: the cooperation that contacts with support 7 when engine work, thus stop housing 1 and support 7 to produce relative movement; And when motor cylinder deactivation, it is separated with support 7, thus make housing 1 can cam (not shown) effect lower with support 7 generation relative movement, below by by realize the concrete structure of lock pin assembly 12 in conjunction with above-mentioned preferred embodiment explanation.
Incorporated by reference to reference to figure 2, Fig. 3 and Fig. 4, in this preferred embodiment, lock pin assembly 12 comprises lock pin lining 2, lock pin 4, lock pin Sealing 5 and the second elastic member 3.Wherein, lock pin lining 2 is to be installed in opening 8, and this lock pin lining 2 has closed end and opening end, and this opening end is configured to towards housing 1 inside.Lock pin 4 has first end 41 and the second end 42, first end 41 is configured to be closely set in the inside of lock pin lining 2 and can slide within it, the second end 42 be configured to towards the opening end of lock pin lining 2 and and the inwall of lock pin lining 2 between form cavity 22, in this cavity 22, be filled with liquid for hydraulic transmission (for example, hydraulic oil or other applicable liquids).Lock pin Sealing 5 is the opening ends that are arranged on lock pin lining 2, and it matches for cavity 22 is sealed with the second end 42 of lock pin 4, thereby makes with liquid, to come lock pin 4 to form hydraulic action by hydraulic transmission.It is installed in and between the closed end of lock pin lining 2 inside and lock pin 4, has installed the second elastic member 3, to its same Compress Spring that adopts.
In this preferred embodiment, also on support 7, be provided with the first protuberance 71, so that as shown in Figure 3 when engine work (not cylinder deactivation), via hydraulic transmission, with liquid, be applied to the second active force that the first active force on lock pin 4 is less than 3 pairs of lock pins 4 of the second elastic member, make like this lock pin 4 to the direction motion near housing 1 central axis, at the first above-mentioned active force, the second active force reaches after balance, by the first protuberance 71, contacted with lock pin 4 and coordinate to stop housing 1 and support 7 to produce relative movement, now whole tappet device is done straight line motion under the driving of cam, and drive valve stem 9 motions that contact with it.
Again as shown in Figure 4, when motor cylinder deactivation, by other devices, hydraulic transmission is increased with the flow of liquid, pressure raises, when its first active force that acts on lock pin 4 is greater than the second active force of 3 pairs of lock pins 4 of the second elastic member, lock pin 4 is to the direction motion away from housing 1 central axis, and move to always the first protuberance 71 is separated with lock pin 4, thereby realize housing 1 and can under cam wheel, produce relative movement with support 7, by actuated by cams tappet device, and because the lower end of support 7 is subject to being installed on the active force of the valve spring 10 in cotter seat 11 much larger than the active force of 6 pairs of supports 7 of the first elastic member, thereby housing 1 is moved downward and support 7 does not move, valve will can not move and keep closed condition like this.
Further, on lock pin lining 2, be also provided with the second protuberance 21, during with convenient motor cylinder deactivation, at the first protuberance 71, be separated and produce after relative movement with lock pin 4, the cooperation that contacts with the first protuberance 71 by the second protuberance 21, limits the distance that can produce relative movement between housing 1 and support 7 with this.
Without doubt, those skilled in the art completely can be based on design principle as herein described and with reference to the above preferred embodiment describing in detail, by adopting any applicable mode of the prior art to realize the function of lock pin assembly 12.For example, can carry out to be as required adjusted at neatly the concrete setting position of the first protuberance 71 shown in above-mentioned preferred embodiment and/or the second protuberance 21, or change the structural type of the first protuberance 71 and/or the second protuberance 21, or the first elastic member 6 and/or the second elastic member 3 are arranged to form adopting by a plurality of springs etc.
As mentioned above, by adopting cylinder-deactivation tappet device of engine of the present invention, to open and close for a long time two-stage adjustable normal can to realize engine breathing door, in Fig. 5, correspondingly show the curve that valve lift changes, schematically having demonstrated in the figure valve lift can regulate in long lift (being indicated with symbol A in figure) and zero lift (being indicated with symbol B in figure), therefore can be when needed very convenient, realize motor cylinder deactivation reliably, thereby obtain the good technique effect that reduces oil consumption, reduces noxious gas emission.
More than enumerate some specific embodiments and illustrated in detail cylinder-deactivation tappet device of engine of the present invention, these a few examples are only for explanation principle of the present invention and mode of execution thereof, but not limitation of the present invention, without departing from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement, and therefore all technological schemes that are equal to all should belong to category of the present invention and be limited by every claim of the present invention.
Claims (10)
1. a cylinder-deactivation tappet device of engine, is characterized in that, it comprises:
Housing, it covers on valve mechanism and its upper end closed and contacting with cam, and the sidewall of described housing is provided with at least two openings;
Support, it is installed in the inside of described housing, and its one end is resisted against on the valve stem of described valve mechanism by the first elastic member being located between this support and described housing; And
Lock pin assembly, its be installed in described in each in opening and described the first elastic member between described lock pin assembly, described lock pin assembly is configured to contact with described support when engine work and coordinates to stop described housing and support to produce relative movement, is separated with described support so that described housing can produce relative movement with support under described cam wheel when motor cylinder deactivation.
2. cylinder-deactivation tappet device of engine according to claim 1, is characterized in that, described lock pin assembly comprises:
Lock pin lining, it is installed in described opening and has closed end and towards the opening end of described enclosure interior;
Lock pin, it has first end and the second end, described first end is closely sheathed in described lock pin lining and can be slided, described the second end towards the opening end of described lock pin lining and and the inwall of described lock pin lining between form cavity;
Lock pin Sealing, it is arranged at the opening end of described lock pin lining and matches that with the second end of described lock pin described cavity is sealed, and is filled with hydraulic transmission liquid in described cavity; And
The second elastic member, it is installed between the closed end and described lock pin of described lock pin bush inside.
3. cylinder-deactivation tappet device of engine according to claim 2, is characterized in that, described support is provided with the first protuberance, and it is configured to:
When engine work, via described hydraulic transmission, with the active force that liquid and described the second elastic member apply described lock pin respectively, reaching after balance, by described the first protuberance, contacted with described lock pin and coordinate to stop described housing and described support to produce relative movement; And
When motor cylinder deactivation, under the active force respectively described lock pin being applied with liquid and described the second elastic member via described hydraulic transmission, described the first protuberance and described lock pin are separated so that described housing can produce relative movement with described support under described cam wheel.
4. cylinder-deactivation tappet device of engine according to claim 3, is characterized in that, described lock pin lining is provided with the second protuberance, and it is configured to:
When motor cylinder deactivation, at described the first protuberance and described lock pin, be separated and make after described housing and described support generation relative movement, the cooperation that contacted with described the first protuberance by described the second protuberance is to limit the relative movement distance between described housing and described support.
5. according to the cylinder-deactivation tappet device of engine described in claim 2,3 or 4, it is characterized in that, described hydraulic transmission liquid is hydraulic oil.
6. according to the cylinder-deactivation tappet device of engine described in any one in claim 1-4, it is characterized in that, described housing and/or lock pin lining are cylindric.
7. cylinder-deactivation tappet device of engine according to claim 6, is characterized in that, described opening is provided with 2, and it is radially symmetricly set on described housing.
8. cylinder-deactivation tappet device of engine according to claim 6, is characterized in that, described opening is provided with 3, and it is along being circumferentially symmetricly set on described housing.
9. according to the cylinder-deactivation tappet device of engine described in any one in claim 1-4, it is characterized in that, described housing has symplex structure, and described the first elastic member is installed on the central axis of described housing.
10. according to the cylinder-deactivation tappet device of engine described in any one in claim 1-4, it is characterized in that, described the first elastic member and/or the second elastic member are Compress Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010281937.2A CN102400731B (en) | 2010-09-15 | 2010-09-15 | Cylinder-deactivation tappet device of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010281937.2A CN102400731B (en) | 2010-09-15 | 2010-09-15 | Cylinder-deactivation tappet device of engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102400731A CN102400731A (en) | 2012-04-04 |
| CN102400731B true CN102400731B (en) | 2014-01-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010281937.2A Expired - Fee Related CN102400731B (en) | 2010-09-15 | 2010-09-15 | Cylinder-deactivation tappet device of engine |
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| Country | Link |
|---|---|
| CN (1) | CN102400731B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102852578B (en) * | 2012-09-28 | 2016-01-20 | 长城汽车股份有限公司 | A kind of gasoline engine tappet |
| CN112228178B (en) * | 2020-05-11 | 2022-06-17 | 一汽解放汽车有限公司 | Engine valve driving rocker arm |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4436952A1 (en) * | 1994-10-15 | 1996-04-18 | Schaeffler Waelzlager Kg | Switchable tappet of a valve train of an internal combustion engine |
| JP4163315B2 (en) * | 1999-01-11 | 2008-10-08 | 本田技研工業株式会社 | Engine valve gear |
| DE102008052499A1 (en) * | 2007-11-21 | 2009-05-28 | Schaeffler Kg | Detachable mechanical tappet i.e. bucket tappet, for valve train of internal combustion engine, has pressure spring, and interface that is provided between housing and inner element, and is free of lifting accessories |
| KR20090058840A (en) * | 2007-12-05 | 2009-06-10 | 현대자동차주식회사 | Adjustable tappet |
| CN101655020B (en) * | 2009-09-21 | 2012-03-21 | 芜湖杰锋汽车动力系统有限公司 | Novel mechanical variable tappet mechanism and control method thereof |
-
2010
- 2010-09-15 CN CN201010281937.2A patent/CN102400731B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN102400731A (en) | 2012-04-04 |
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Granted publication date: 20140115 Termination date: 20210915 |