CN102400731A - Cylinder-deactivation tappet device of engine - Google Patents

Cylinder-deactivation tappet device of engine Download PDF

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Publication number
CN102400731A
CN102400731A CN2010102819372A CN201010281937A CN102400731A CN 102400731 A CN102400731 A CN 102400731A CN 2010102819372 A CN2010102819372 A CN 2010102819372A CN 201010281937 A CN201010281937 A CN 201010281937A CN 102400731 A CN102400731 A CN 102400731A
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CN
China
Prior art keywords
lock pin
housing
cylinder deactivation
motor cylinder
tappet
Prior art date
Application number
CN2010102819372A
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Chinese (zh)
Other versions
CN102400731B (en
Inventor
武涛
李冲霄
钱承炬
张华�
郝晓伟
孔毅
Original Assignee
上海汽车集团股份有限公司
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Priority to CN201010281937.2A priority Critical patent/CN102400731B/en
Publication of CN102400731A publication Critical patent/CN102400731A/en
Application granted granted Critical
Publication of CN102400731B publication Critical patent/CN102400731B/en

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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

Motor cylinder deactivation tappet device

[technical field]

The present invention relates to the tappet device, relate in particular to and to realize that valve mechanism lift at long lift and the adjustable motor cylinder deactivation tappet device of zero lift two-stage, the invention belongs to automobile technical field.

[background technique]

In order to guarantee that automobile possesses the power that abundance is arranged when quickening or climbing, need when design, be that motor reserves stand-by power.The operating mode that will cause motor often to be in low-load is like this carried out work, thereby exists problems such as efficient is low, oil consumption height.To this, can adopt the motor cylinder stopping technique to solve." motor cylinder deactivation " is meant the work of some cylinder in the shutting engine down cylinder under specific operation; Make the valve stop motion simultaneously; So for the gross output that guarantees motor remains unchanged; Working cylinder just must move under the high load situation, and the engine air throttle aperture is big at this moment, 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 to realize the valve stop motion and it is reworked.

The disclosed patent that relates to the motor cylinder stopping technique all is to be directed against the rocking arm type valve mechanism basically at present; Because for the valve mechanism that directly drives tappet through cam; the process that the cam of rocking arm type valve mechanism is delivered to valve motion is long, part is more; this makes that its institute aspect installation dimension is restricted less, and realize that correspondingly the technological scheme of motor cylinder deactivation is more and be easy to realize.Yet, directly drive tappet type valve mechanism for cam, because its part is few, installing space is little, so it is big to realize that motor is endured the technical difficulty of cylinder.

[summary of the invention]

In view of this; The object of the present invention is to provide the unique motor cylinder deactivation tappet device of a kind of structural design; It can directly drive tappet type valve mechanism to cam and realize that its lift is adjustable in long lift and zero lift two-stage, thereby can solve the problems referred to above that exist in the existing technology.

For realizing the foregoing invention purpose, the technological scheme that the present invention adopts is following:

A kind of motor cylinder deactivation tappet device, it comprises:

Housing, it covers on the valve mechanism and its upper end closed and contacting with cam, and the sidewall of said housing is provided with at least two openings;

Support, it is installed in the inside of said housing, and the one of which end is resisted against on the valve stem of said valve mechanism through first elastic member that is located between this support and the said housing; And

The lock pin assembly; It is installed in each said opening and is configured to and when the motor proper functioning, contacts cooperation to stop said housing and support generation relative movement with said support, when the motor cylinder deactivation, then is separated with said support so that said housing can produce relative movement with support under said cam action.

In above-mentioned motor cylinder deactivation tappet device, preferably, said lock pin assembly comprises:

The lock pin lining, it is installed in the said opening and has closed end and towards the opening end of said enclosure interior;

Lock pin, it has first end and second end, said first end closely is sheathed in the said lock pin lining and can be slided, said second end towards the opening end of said lock pin lining and and the inwall of said lock pin lining between form cavity;

The lock pin Sealing, it is arranged at the opening end of said lock pin lining and matches so that said cavity is sealed with second end of said lock pin, is filled with hydraulic transmission in the said cavity and uses liquid; And

Second elastic member, it is installed between the closed end and said lock pin of said lock pin bush inside.

In above-mentioned motor cylinder deactivation tappet device, preferably, said support is provided with first protuberance, and it is configured to:

When the motor proper functioning; After the active force that respectively said lock pin is applied with liquid and said second elastic member via said hydraulic transmission reaches balance, contact cooperation with said lock pin to stop said housing and said support generation relative movement by said first protuberance; And

When the motor cylinder deactivation; Under the active force that respectively said lock pin is applied with liquid and said second elastic member via said hydraulic transmission, said first protuberance and said lock pin are separated so that said housing can produce relative movement with said support under said cam action.

In above-mentioned motor cylinder deactivation tappet device, preferably, said lock pin lining is provided with second protuberance, and it is configured to:

When the motor cylinder deactivation; After said first protuberance and said lock pin are separated and make that said housing and said support produce relative movement, contact cooperation with said first protuberance to limit the relative movement distance between said housing and the said support by said second protuberance.

In above-mentioned motor cylinder deactivation tappet device, preferably, said hydraulic transmission is a hydraulic oil with liquid.

In above-mentioned motor cylinder deactivation tappet device, preferably, said housing and/or said lock pin lining are cylindric.

In above-mentioned motor cylinder deactivation tappet device, preferably, said opening is provided with 2, and it radially is symmetricly set on the said housing.

In above-mentioned motor cylinder deactivation tappet device, preferably, said opening is provided with 3, and it is along circumferentially being symmetricly set on the said housing.

In above-mentioned motor cylinder deactivation tappet device, preferably, said housing has symplex structure, and said first elastic member is installed on the central axis of said housing.

In above-mentioned motor cylinder deactivation tappet device, preferably, said first elastic member and/or said second elastic member are pressure spring.

Beneficial effect of the present invention is: this motor cylinder deactivation tappet device has the unique design structure; Adopt it can realize that the engine breathing door opens and close two-stage for a long time and regulate normal; Thereby can realize the motor cylinder deactivation through stopping valve motion when needed, to reduce oil consumption, to reduce noxious gas emission.Can this motor cylinder deactivation tappet device be applied in the valve mechanism that the cam overhead directly drives tappet; Need not to change former engine cylinder cover so that directly replace original tappet, so the present invention's significant advantages such as favorable expandability, use value are high, using effect is good that possess skills.

[description of drawings]

Below will combine accompanying drawing and embodiment, technological scheme of the present invention is done further to describe in detail.Wherein:

Fig. 1 is the stereochemical structure decomposition view of a preferred embodiment of motor cylinder deactivation tappet device of the present invention;

Fig. 2 is the cross-sectional schematic of preferred embodiment after the integral body assembling among Fig. 1;

Fig. 3 is the working state schematic representation of preferred embodiment when the motor proper functioning among Fig. 1;

Fig. 4 is the working state schematic representation of preferred embodiment when the motor cylinder deactivation among Fig. 1; And

Fig. 5 is that the valve lift curve of the preferred embodiment among Fig. 1 changes schematic representation.

Description of reference numerals:

1 housing, 2 lock pin linings

3 second elastic members, 4 lock pins

5 lock pin Sealings, 6 first elastic members

7 supports, 8 openings

9 valve stems, 10 valve spring

11 cotter seats, 12 lock pin assemblies

21 second protuberances, 22 cavitys

41 first ends, 42 second ends

71 first protuberances

[embodiment]

Please consult Fig. 1 and Fig. 2 simultaneously, they have schematically demonstrated the general structure of a preferred embodiment of motor cylinder deactivation tappet device of the present invention.In this preferred embodiment, motor cylinder deactivation tappet device 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 the valve mechanism, and the upper end of housing 1 is enclosed construction and contacting with cam on the valve transmission group camshaft, on the sidewall of housing 1, also radially has been symmetrical set two openings 8 simultaneously.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 circumferentially be symmetrical set 3,4 or more a plurality of openings.

Support 7 is the inside that is installed in housing 1, and through being folded in first elastic member 6 between support 7 and the housing 1, and an end of support 7 is resisted against on the valve stem 9 of valve mechanism.In this preferred embodiment, what first elastic member 6 adopted is pressure spring, and is arranged to housing 1 and/or lock pin lining 2 cylindric.In addition,, housing 1 is arranged to have symplex structure, and the elastic member 6 of winning is installed on the central axis of housing 1 based on the consideration that designs for ease, makes.

In this motor cylinder deactivation tappet device, lock pin assembly 12 is one of its important composition parts.In general, it is to be designed to be installed in each opening 8 and to be configured to have following function: the cooperation that when the motor proper functioning, contacts with support 7, thus stop housing 1 and support 7 to produce relative movement; And when the motor cylinder deactivation, it then is separated with support 7, thereby makes housing 1 under cam (not shown) effect, to produce relative movement with support 7, below will concrete structure that realize lock pin assembly 12 be described through combining above-mentioned preferred embodiment.

Please combine with 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 second elastic member 3.Wherein, lock pin lining 2 is to be installed in the 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 second end 42; First end 41 is configured to closely be set in the inside of lock pin lining 2 and can slide within it; Second end 42 then 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 hydraulic transmission with liquid (for example, hydraulic oil or other applicable liquids).Lock pin Sealing 5 is the opening ends that are set at lock pin lining 2, and it matches with second end 42 of lock pin 4 and cavity 22 is sealed being used for, thereby makes and can come lock pin 4 is formed hydraulic actions with liquid through hydraulic transmission.It is installed between the closed end of lock pin lining 2 inside and lock pin 4 and has installed second elastic member 3, to its same pressure spring that adopts.

In this preferred embodiment; Also on support 7, be provided with first protuberance 71; So that as shown in Figure 3 when motor proper functioning (promptly not cylinder deactivation), be applied to first active force on the lock pin 4 less than second active force of 3 pairs of lock pins 4 of second elastic member via hydraulic transmission with liquid, make lock pin 4 to direction motion like this near housing 1 central axis; After the first above-mentioned active force, second active force reach balance; Contact cooperation with lock pin 4 to stop housing 1 and support 7 generation relative movement by first protuberance 71, and this moment, whole tappet device was done straight line motion under the driving of cam, and contacted with it valve stem 9 motions of driving.

As shown in Figure 4 again; When the motor cylinder deactivation; Through other devices make hydraulic transmission with the flow of liquid increase, pressure raises, when its first active force that acts on lock pin 4 during greater than second active force of 3 pairs of lock pins 4 of second elastic member, lock pin 4 is to the direction motion away from housing 1 central axis; And move to always the protuberance 71 of winning is separated with lock pin 4; Thereby realize that housing 1 can produce relative movement with support 7 under cam action, promptly by cam drive tappet device, and because the lower end of support 7 receives the active force of the active force of the valve spring 10 that is installed in the cotter seat 11 much larger than 6 pairs of supports 7 of first elastic member; Thereby make housing 1 move downward and support 7 does not move, valve will can not move and keep shut state like this.

Further; On lock pin lining 2, also be provided with second protuberance 21; During with convenient motor cylinder deactivation; Be separated and after producing relative movement at first protuberance 71 and lock pin 4,, limit the distance that can produce relative movement between housing 1 and the support 7 with this through the cooperation that contacts with first protuberance 71 of second protuberance 21.

Be that those skilled in the art can realize the function of lock pin assembly 12 through adopting any suitable mode of the prior art based on the preferred embodiment of design principle as herein described and the above detailed description of reference fully without doubt.For example; That can come to be adjusted at neatly first protuberance 71 shown in the above-mentioned preferred embodiment and/or second protuberance 21 as required specifically is provided with the position; Perhaps change the structural type of first protuberance 71 and/or second protuberance 21, perhaps first elastic member 6 and/or second elastic member 3 are arranged to form that adopts by a plurality of springs or the like.

As stated; Through adopting motor cylinder deactivation tappet device of the present invention; Can realize that the engine breathing door opens and close the two-stage can regulate for a long time normal; In Fig. 5, correspondingly show the curve that valve lift changes; Schematically having demonstrated valve lift in the figure can regulate in long lift (indicating with symbol A among the figure) and zero lift (indicating with symbol B among the figure), therefore can realize the motor cylinder deactivation very convenient when needed, reliably, thus the good technique effect that obtains to reduce oil consumption, reduces noxious gas emission.

More than enumerate some specific embodiments and come sets forth in detail motor cylinder deactivation of the present invention tappet device; These a few examples only supply to explain the usefulness of principle of the present invention and mode of execution thereof; But not limitation of the present invention; Under the situation that does not break away from the spirit and scope of the present invention, those of ordinary skill in the art can also make various distortion and improvement, so all technological schemes that are equal to all should belong to category of the present invention and being limited by each item claim of the present invention.

Claims (10)

1. motor cylinder deactivation tappet device is characterized in that it comprises:
Housing, it covers on the valve mechanism and its upper end closed and contacting with cam, and the sidewall of said housing is provided with at least two openings;
Support, it is installed in the inside of said housing, and the one of which end is resisted against on the valve stem of said valve mechanism through first elastic member that is located between this support and the said housing; And
The lock pin assembly; It is installed in each said opening and is configured to and when the motor proper functioning, contacts cooperation to stop said housing and support generation relative movement with said support, when the motor cylinder deactivation, then is separated with said support so that said housing can produce relative movement with support under said cam action.
2. motor cylinder deactivation tappet device according to claim 1 is characterized in that said lock pin assembly comprises:
The lock pin lining, it is installed in the said opening and has closed end and towards the opening end of said enclosure interior;
Lock pin, it has first end and second end, said first end closely is sheathed in the said lock pin lining and can be slided, said second end towards the opening end of said lock pin lining and and the inwall of said lock pin lining between form cavity;
The lock pin Sealing, it is arranged at the opening end of said lock pin lining and matches so that said cavity is sealed with second end of said lock pin, is filled with hydraulic transmission in the said cavity and uses liquid; And
Second elastic member, it is installed between the closed end and said lock pin of said lock pin bush inside.
3. motor cylinder deactivation tappet device according to claim 2 is characterized in that said support is provided with first protuberance, and it is configured to:
When the motor proper functioning; After the active force that respectively said lock pin is applied with liquid and said second elastic member via said hydraulic transmission reaches balance, contact cooperation with said lock pin to stop said housing and said support generation relative movement by said first protuberance; And
When the motor cylinder deactivation; Under the active force that respectively said lock pin is applied with liquid and said second elastic member via said hydraulic transmission, said first protuberance and said lock pin are separated so that said housing can produce relative movement with said support under said cam action.
4. motor cylinder deactivation tappet device according to claim 3 is characterized in that said lock pin lining is provided with second protuberance, and it is configured to:
When the motor cylinder deactivation; After said first protuberance and said lock pin are separated and make that said housing and said support produce relative movement, contact cooperation with said first protuberance to limit the relative movement distance between said housing and the said support by said second protuberance.
5. according to claim 2,3 or 4 described motor cylinder deactivation tappet devices, it is characterized in that said hydraulic transmission is a hydraulic oil with liquid.
6. according to each described motor cylinder deactivation tappet device among the claim 1-4, it is characterized in that said housing and/or said lock pin lining are cylindric.
7. motor cylinder deactivation tappet device according to claim 6 is characterized in that said opening is provided with 2, and it radially is symmetricly set on the said housing.
8. motor cylinder deactivation tappet device according to claim 6 is characterized in that said opening is provided with 3, and it is along circumferentially being symmetricly set on the said housing.
9. according to each described motor cylinder deactivation tappet device among the claim 1-4, it is characterized in that said housing has symplex structure, and said first elastic member is installed on the central axis of said housing.
10. according to each described motor cylinder deactivation tappet device among the claim 1-4, it is characterized in that said first elastic member and/or said second elastic member are pressure spring.
CN201010281937.2A 2010-09-15 2010-09-15 Cylinder-deactivation tappet device of engine CN102400731B (en)

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

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CN102400731A true CN102400731A (en) 2012-04-04
CN102400731B CN102400731B (en) 2014-01-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852578A (en) * 2012-09-28 2013-01-02 长城汽车股份有限公司 Gasoline engine tappet

Citations (5)

* Cited by examiner, † Cited by third party
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
CN1260443A (en) * 1999-01-11 2000-07-19 本田技研工业株式会社 Driving device for valve of engine
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 Variable tappet
CN101655020A (en) * 2009-09-21 2010-02-24 芜湖杰锋汽车动力系统有限公司 Novel mechanical variable tappet mechanism and control method thereof

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
WO1996012092A1 (en) * 1994-10-15 1996-04-25 Ina Wälzlager Schaeffler Kg Engageable tappet for a valve drive of an internal combustion engine
CN1260443A (en) * 1999-01-11 2000-07-19 本田技研工业株式会社 Driving device for valve of engine
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 Variable tappet
CN101655020A (en) * 2009-09-21 2010-02-24 芜湖杰锋汽车动力系统有限公司 Novel mechanical variable tappet mechanism and control method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102852578A (en) * 2012-09-28 2013-01-02 长城汽车股份有限公司 Gasoline engine tappet
CN102852578B (en) * 2012-09-28 2016-01-20 长城汽车股份有限公司 A kind of gasoline engine tappet

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