Valve locking mechanism for engine cylinder deactivation and vehicle
阅读说明:本技术 一种发动机停缸用气门锁定机构及车辆 (Valve locking mechanism for engine cylinder deactivation and vehicle ) 是由 郭立新 于 2020-07-06 设计创作,主要内容包括:本发明涉及发动机停缸技术领域,尤其涉及一种发动机停缸用气门锁定机构及车辆。气门锁定机构包括:摇臂,其中部和摇臂轴配合,并能够绕摇臂轴摆动,摇臂用于将凸轮轴上凸轮的运动传递给气门,摇臂的一端设置有相互连通的摇臂孔和锁销孔,锁销孔与摇臂孔呈夹角设置;摇臂柱,其滑动地设置于摇臂孔内,摇臂柱的外侧壁上设置有配合缺口,摇臂柱能够作用于气门桥;锁销,其滑动地设置于锁销孔内;第一弹性件,其作用于锁销,以使锁销的第一端伸入于摇臂孔内插入于配合缺口内;电磁阀,其阀杆连接于锁销的第二端,电磁阀用于驱使锁销运动,以使锁销的第一端脱离配合缺口。结构简单,通过电磁阀驱动消除了发动机工况及温度对停缸机构响应时间的影响。(The invention relates to the technical field of engine cylinder deactivation, in particular to a cylinder locking mechanism for engine cylinder deactivation and a vehicle. The valve locking mechanism includes: the middle part of the rocker arm is matched with the rocker arm shaft and can swing around the rocker arm shaft, the rocker arm is used for transmitting the motion of a cam on the cam shaft to the valve, one end of the rocker arm is provided with a rocker arm hole and a lock pin hole which are communicated with each other, and the lock pin hole and the rocker arm hole form an included angle; the rocker arm column is slidably arranged in the rocker arm hole, a matching notch is arranged on the outer side wall of the rocker arm column, and the rocker arm column can act on the valve bridge; a lock pin slidably disposed in the lock pin hole; the first elastic piece acts on the lock pin so that the first end of the lock pin extends into the rocker arm hole and is inserted into the matching notch; and the valve rod of the electromagnetic valve is connected to the second end of the lock pin, and the electromagnetic valve is used for driving the lock pin to move so that the first end of the lock pin is separated from the matching notch. The electromagnetic valve driving device has a simple structure, and eliminates the influence of the working condition and temperature of the engine on the response time of the cylinder deactivation mechanism through the electromagnetic valve driving.)
1. A valve locking mechanism for engine deactivation, comprising:
the middle of the rocker arm (11) is matched with the rocker arm shaft and can swing around the rocker arm shaft, the rocker arm (11) is used for transmitting the motion of a cam on a cam shaft to a valve, one end of the rocker arm (11) is provided with a rocker arm hole (111) and a lock pin hole (112) which are communicated with each other, and the lock pin hole (112) and the rocker arm hole (111) are arranged in an included angle;
the rocker arm column (12) is arranged in the rocker arm hole (111) in a sliding mode, a matching notch (121) is formed in the outer side wall of the rocker arm column (12), and the rocker arm column (12) can act on a valve bridge (100);
a locking pin (13) slidably disposed within the locking pin hole (112);
the first elastic piece (14) acts on the lock pin (13) so that a first end of the lock pin (13) extends into the rocker arm hole (111) and is inserted into the matching notch (121);
and the valve rod (151) of the electromagnetic valve (15) is connected to the second end of the lock pin (13), and the electromagnetic valve (15) is used for driving the lock pin (13) to move so as to enable the first end of the lock pin (13) to be separated from the matching notch (121).
2. The valve locking mechanism for engine deactivation according to claim 1, further comprising an adjustment lever (16) and an adjustment lever seat (17), wherein said adjustment lever (16) is connected to one end of said rocker arm post (12), said adjustment lever (16) is in ball contact with said adjustment lever seat (17), and said adjustment lever seat (17) is provided on a valve bridge (100).
3. The cylinder deactivation cylinder lock locking mechanism for engine according to claim 2, wherein the end of said adjusting lever (16) away from said rocker arm post (12) is provided with a spherical protrusion (161), and said adjusting lever seat (17) is provided with a spherical groove matching said spherical protrusion (161).
4. The cylinder locking mechanism for engine deactivation according to claim 2, wherein the adjusting rod (16) is provided with an external thread, the rocker arm column (12) is provided with a threaded hole, the adjusting rod (16) is in threaded connection with the threaded hole, the adjusting rod (16) is in threaded connection with an adjusting nut (18), and the adjusting nut (18) abuts against the rocker arm column (12).
5. The valve locking mechanism for engine deactivation according to claim 1, further comprising a second elastic member (19) and a spring seat (20), wherein the second elastic member (19) is disposed in the rocker hole (111), the spring seat (20) is fixed to an end of the rocker hole (111) remote from the adjustment rod (16), and both ends of the second elastic member (19) abut against the spring seat (20) and the rocker post (12), respectively.
6. Valve locking mechanism for engine deactivation according to claim 1, wherein a first end of the lock pin (13) is provided with an insertion projection (131), the insertion projection (131) being insertable into the engagement notch (121), the engagement notch (121) having a width larger than a thickness of the insertion projection (131).
7. The valve locking mechanism for engine deactivation according to claim 6, wherein the lock pin hole (112) is a stepped hole, a small-diameter section (1121) of the stepped hole communicates with the rocker arm hole (111), a large-diameter section of the stepped hole is a square hole (1122), and a guide block (135) that matches the square hole (1122) is provided at an end of the lock pin (13) where the insertion projection (131) is not provided.
8. The valve locking mechanism for engine deactivation according to claim 1, wherein the lock pin (13) is ball-hinged to the valve rod (151), the first elastic member (14) is fitted over the valve rod (151), and both ends thereof are respectively abutted to the lock pin (13) and the solenoid valve (15).
9. The valve locking mechanism for engine deactivation according to claim 6, wherein a lubricating oil passage (114) communicating with the rocker hole (111) is provided in the rocker arm (11), and the lubricating oil passage (114) communicates with an engine main oil passage through the rocker shaft; a first oil hole (133) is formed in the lock pin (13), and a second oil hole (132) communicated with the first oil hole (133) is formed in the side surface of the insertion boss (131);
the rocker arm (11) is provided with a throttling oil hole (1123), and the throttling oil hole (1123) is positioned at the end part of the lock pin hole (112) and communicated with the lock pin hole (112); lubricating oil enters through the lubricating oil passage (114), flows through the rocker arm hole (111), the second oil hole (132), the first oil hole (133) and the lock pin hole (112), and is then discharged from the throttle oil hole (1123).
10. A vehicle characterized by comprising the valve locking mechanism for engine deactivation according to any one of claims 1 to 9.
Technical Field
The invention relates to the technical field of engine cylinder deactivation, in particular to a cylinder locking mechanism for engine cylinder deactivation and a vehicle.
Background
When the engine works under medium and small loads, the pumping loss is large; poor ventilation, large residual exhaust gas amounts in the engine cylinder, poor combustion stability and completeness, leading to poor fuel consumption. If the cylinder deactivation technology is adopted in the middle and small load working conditions of the multi-cylinder engine, part of cylinders stop working, for example: when the four-cylinder engine stops working with two cylinders, in order to ensure the same power output, the air inflow of the rest working cylinders is necessarily increased, the air inlet pressure is increased, and the pumping loss is reduced; meanwhile, the charging efficiency of the engine is improved due to the increase of the air inlet pressure, the residual waste gas amount in the residual air cylinder is reduced, and the combustion quality of the mixed gas is improved. After the engine adopts the cylinder deactivation technology, the total surface area of the combustion chamber can be greatly reduced, so that the heat transfer loss is reduced, and the improvement of the cycle thermal efficiency and the oil consumption of the engine is facilitated.
In an engine adopting the cylinder deactivation technology, fuel injection of a cylinder to be deactivated is stopped, and a cylinder valve deactivation mechanism which does not work is designed to stop the motion of a cylinder valve of the cylinder to be deactivated so as to realize cylinder deactivation of the cylinder. In the prior art, a cylinder deactivation technology implementation mechanism is driven by engine oil hydraulic pressure. The oil control valve is configured to selectively supply pressurized oil to the latch assembly to move the latch assembly between the first configuration and the second configuration. The hydraulic mechanism controls the latch assembly to achieve control of valve deactivation.
However, these mechanisms all use engine oil of the engine, the oil pressure of the engine is related to the engine speed, and the oil pressure difference is large at different speeds. In addition, the viscosity of the engine oil at different temperatures is very different, and the difference in viscosity affects the friction and leakage of the cylinder deactivation mechanism. The cylinder stopping mechanism caused by the difference of the engine oil pressure and the viscosity has different responses, so that the cylinder stopping mechanism needs to be calibrated respectively under different working conditions and different temperatures of the engine, an engine oil way needs to be modified, the system is complex, the arrangement is difficult, the cost is high, and the influence of the temperature and the working conditions of the engine is large.
Therefore, a valve locking mechanism for engine cylinder deactivation and a vehicle are needed to solve the above technical problems.
Disclosure of Invention
The invention aims to provide a valve locking mechanism for engine cylinder deactivation and a vehicle, wherein the cylinder deactivation mechanism is directly driven by an electromagnetic valve, so that the influence of the working condition and temperature of an engine on the response time of the cylinder deactivation mechanism is eliminated, the influence of hydraulic response is avoided, and the response time of the mechanism is faster; and the structure is simple.
In order to achieve the purpose, the invention adopts the following technical scheme:
in one aspect, there is provided a valve locking mechanism for engine deactivation, comprising:
the middle part of the rocker arm is matched with the rocker arm shaft and can swing around the rocker arm shaft, the rocker arm is used for transmitting the motion of a cam on a cam shaft to the valve, one end of the rocker arm is provided with a rocker arm hole and a lock pin hole which are communicated with each other, and the lock pin hole and the rocker arm hole form an included angle;
the rocker arm column is arranged in the rocker arm hole in a sliding mode, a matching notch is formed in the outer side wall of the rocker arm column, and the rocker arm column can act on a valve bridge;
a lock pin slidably disposed in the lock pin bore;
the first elastic piece acts on the lock pin so that the first end of the lock pin extends into the rocker arm hole and is inserted into the matching notch;
and the valve rod of the electromagnetic valve is connected to the second end of the lock pin, and the electromagnetic valve is used for driving the lock pin to move so as to enable the first end of the lock pin to be separated from the matching notch.
As an engine cylinder deactivation is with preferred technical scheme of lock mechanism, still include and adjust pole and regulating rod seat, adjust the pole connect in the one end of rocking arm post, adjust the pole with the contact of regulating rod seat ball, the regulating rod seat sets up on the valve bridge.
As an optimal technical scheme of the air door locking mechanism for cylinder deactivation of the engine, one end, far away from the rocker arm column, of the adjusting rod is provided with a spherical protrusion, and a spherical groove matched with the spherical protrusion is formed in the adjusting rod seat.
As a preferred technical scheme of engine cylinder deactivation air door locking mechanism, be provided with the external screw thread on the regulation pole, be provided with the screw hole on the rocking arm post, adjust pole threaded connection in the screw hole, threaded connection has adjusting nut on the regulation pole, adjusting nut butt in the rocking arm post.
As a preferred technical scheme of engine cylinder deactivation air door locking mechanism, still include second elastic component and spring holder, the second elastic component set up in the rocking arm is downthehole, the spring holder is fixed in the rocking arm hole is kept away from the one end of adjusting the pole, the both ends of second elastic component respectively the butt in the spring holder with the rocking arm post.
As a preferable technical solution of the cylinder deactivation air lock locking mechanism for the engine, an insertion protrusion is provided at a first end of the lock pin, the insertion protrusion can be inserted into the fitting notch, and a width of the fitting notch is larger than a thickness of the insertion protrusion.
As a preferred technical scheme of the air door locking mechanism for engine cylinder deactivation, the lock pin hole is a stepped hole, a small-bore section of the stepped hole is communicated with the rocker arm hole, a large-bore section of the stepped hole is a square hole, and a guide block matched with the square hole is arranged at one end, not provided with the insertion protrusion, of the lock pin.
As a preferred technical scheme of the cylinder locking mechanism for engine cylinder deactivation, the lock pin is in ball hinge with the valve rod, the first elastic member is sleeved on the valve rod, and two ends of the first elastic member are respectively abutted against the lock pin and the electromagnetic valve.
As a preferred technical scheme of the air door locking mechanism for engine cylinder deactivation, a lubricating oil passage communicated with the rocker hole is formed in the rocker and is communicated with a main oil passage of an engine through the rocker shaft; a first oil hole is formed in the lock pin, and a second oil hole communicated with the first oil hole is formed in the side surface of the insertion bulge;
the rocker arm is provided with a throttling oil hole, and the throttling oil hole is positioned at the end part of the lock pin hole and is communicated with the lock pin hole; lubricating oil enters through the lubricating oil channel, flows through the rocker arm hole, the second oil hole, the first oil hole and the lock pin hole, and is discharged from the throttling oil hole.
In another aspect, a vehicle is provided that includes the cylinder deactivation cylinder lock mechanism as described above.
The invention has the beneficial effects that:
the valve locking mechanism for engine cylinder deactivation is simple in structure, the cylinder deactivation mechanism is directly driven by the electromagnetic valve, the influence of the working condition and temperature of the engine on the response time of the cylinder deactivation mechanism is eliminated, the valve locking mechanism is not influenced by hydraulic response, and the response time of the mechanism is faster. The cylinder can be stopped only by partially changing the valve rocker, the existing cylinder cover does not need to be changed, the valve actuating mechanism is slightly changed, the structure is simple, and the valve actuating mechanism is easy to arrange on an engine.
Drawings
FIG. 1 is a cross-sectional view of a valve locking mechanism for engine deactivation provided in accordance with the present invention;
FIG. 2 is a partial cross-sectional view of a first valve locking mechanism for engine deactivation provided in accordance with the present invention;
FIG. 3 is a partial cross-sectional view of the valve locking mechanism for engine deactivation provided in accordance with the present invention (the bottom surface of the insertion projection does not abut against the bottom surface of the engagement notch);
FIG. 4 is a partial cross-sectional view of the valve locking mechanism for engine deactivation provided in accordance with the present invention in an unlocked condition;
FIG. 5 is a second partial cross-sectional view of the engine deactivation valve locking mechanism provided in accordance with the present invention;
FIG. 6 is a schematic structural view of a rocker arm provided by the present invention;
FIG. 7 is a cross-sectional view of a rocker arm provided by the present invention;
FIG. 8 is a schematic view of the lock pin structure provided by the present invention
In the figure: 100. a valve bridge;
11. a rocker arm; 111. a rocker arm hole; 112. a lock pin hole; 1121. a small bore section; 1122. a square hole; 1123. a throttle oil hole; 113. a shaft hole; 114. a lubricating oil passage; 115. a first column; 116. a second cylinder;
12. a rocker arm post; 121. a matching notch; 122. a first limit protrusion;
13. a lock pin; 131. inserting the projection; 1311. an arc-shaped slot; 132. a second oil hole; 133. a first oil hole; 134. a second spherical groove; 135. a guide block;
14. a first elastic member; 15. an electromagnetic valve; 151. a valve stem; 1511. a spherical block; 152. a valve housing; 1521. an oil drain hole; 153. an armature; 154. a coil;
16. adjusting a rod; 161. a spherical bulge; 17. an adjusting rod seat; 18. adjusting the nut; 19. a second elastic member; 20. a spring seat; 201. and a second limiting bulge.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that are conventionally placed when the products of the present invention are used, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements to be referred to must have specific orientations, be constructed in specific orientations, and operate, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1 to 8, the present embodiment discloses a valve locking mechanism for engine deactivation, which includes a
the shaft hole 113 is formed in the middle of the
The
Preferably, the cylinder deactivation valve locking mechanism further includes a second
The
The
The
When the engine operates in the normal mode, the valve is normally opened and closed, the
The
When the other end of the
When the other end of the
When the cam profile valve lift is in a reduction stage along with the continuous rotation of the camshaft, the cam cannot extrude the
When the engine is operated in a cylinder deactivation mode and the valve motion needs to be stopped, the
Referring to fig. 4, as the camshaft continues to rotate, when the other end of the
the valve locking mechanism for engine cylinder deactivation is simple in structure, the cylinder deactivation mechanism is directly driven by the
The embodiment also discloses a vehicle which comprises the valve locking mechanism for engine cylinder deactivation. The valve locking mechanism for engine cylinder deactivation of the vehicle is simple in structure, the cylinder deactivation mechanism is directly driven by the
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
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