CN111173586A - Locking Mechanisms and Internal Combustion Engines for Switchable Rocker Arms - Google Patents
Locking Mechanisms and Internal Combustion Engines for Switchable Rocker Arms Download PDFInfo
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- CN111173586A CN111173586A CN201811344328.XA CN201811344328A CN111173586A CN 111173586 A CN111173586 A CN 111173586A CN 201811344328 A CN201811344328 A CN 201811344328A CN 111173586 A CN111173586 A CN 111173586A
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- Prior art keywords
- locking pin
- actuator
- locking
- permanent magnet
- rocker arm
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
本发明涉及一种用于可切换摇臂(2)的锁止机构和内燃机。所述可切换摇臂用于内燃机的气门机构，其中，所述可切换摇臂包括两个能够相对彼此运动的分臂(5，8)，所述锁止机构包括锁定销(9)和致动器(7)，其中，所述锁定销被容纳在所述两个分臂中的纵向端部之间且能够连接或分离所述两个分臂，所述致动器能够致动所述锁定销，使得所述锁定销在固定连接所述两个分臂的连接位置与解除所述固定连接的分离位置之间移动，其中，在所述锁定销的朝向所述致动器的一端上设有磁极，所述致动器包括能转动的永磁体(13)，使得所述锁定销在所述连接位置和所述分离位置之间移动。所述内燃机具有上述的锁止机构。
The invention relates to a locking mechanism and an internal combustion engine for a switchable rocker arm (2). The switchable rocker arm is used in a valve train of an internal combustion engine, wherein the switchable rocker arm comprises two sub-arms (5, 8) that can move relative to each other, and the locking mechanism comprises a locking pin (9) and a locking pin (9) and a locking mechanism. an actuator (7), wherein the locking pin is accommodated between the longitudinal ends of the two sub-arms and is capable of connecting or disengaging the two sub-arms, the actuator being capable of actuating the two sub-arms a locking pin such that the locking pin moves between a connected position that securely connects the two sub-arms and a disengaged position that releases the fixed connection, wherein on the end of the locking pin facing the actuator Provided with poles, the actuator includes a rotatable permanent magnet (13) so that the locking pin is moved between the connected position and the disconnected position. The internal combustion engine has the above-described locking mechanism.
Description
Technical Field
The invention relates to a locking mechanism for a switchable rocker arm for a valve train of an internal combustion engine. The invention also relates to an internal combustion engine comprising the locking mechanism.
Background
To improve engine performance, improve fuel economy, and reduce exhaust emissions, variable valve lift systems are often used. One possible solution is a switchable rocker arm, wherein the rocker arm can have a plurality of partial arms, for example an inner arm and an outer arm. Switchable rocker arms may be switched between a locked state and an unlocked state by a latching mechanism to control valve actuation. In one possible form, the locking mechanism has a locking pin which, when the locking pin is in the locked position, moves the inner and outer arms in one unit, whereas, when the locking pin is in the unlocked position, the two partial arms of the rocker arm can move independently of one another. In one possible embodiment, the switchable rocker arm in different states contacts different cam lobes, for example low-lift lobes, high-lift lobes and no-lift lobes, by means of different partial arms, whereby different lifts are transmitted to the valve stem of the associated intake valve or of the exhaust valve. The valve train system switches rocker arm modes in a manner suitable for engine operation.
For example, in US patent document US 8,752,513B2 a switchable rocker arm is disclosed, wherein inner and outer arms of the switchable rocker arm are used to transfer the motion of a camshaft to a valve stem, wherein a locking mechanism comprises a locking pin, a sleeve and a guide member.
Also for example, in US patent document US 8,726,862B2 a switchable rocker arm is disclosed, wherein the switchable rocker arm has a latching mechanism formed by an actuatable locking pin, which locking pin has a flat portion, and which locking pin extends from the inner arm and engages below a stop surface of the outer arm.
However, in the above-described scheme, the lock pin is accommodated in an oil environment, and the lock pin determines a movement direction by comparing a spring force and an oil pressure generated by an oil passage, thereby implementing a locking/unlocking function to implement different valve lifts. Therefore, an oil passage must be provided so that oil can be delivered, for example, from the cylinder head to the receiving cavity of the locking pin, which greatly increases the complexity of the cylinder head, increasing the difficulty of the cylinder head in design and manufacture. In addition, because the working medium is oil, the working mode of the rocker arm is flexibly switched.
Disclosure of Invention
The object of the present invention is therefore to provide a locking mechanism for a switchable rocker arm, the actuation of which does not require the provision of oil channels, so that the design and manufacture of an internal combustion engine, in particular of a valve train of an internal combustion engine, is simplified
The above-mentioned technical problem is solved by a detent mechanism for a switchable rocker arm for a valve train of an internal combustion engine, wherein the switchable rocker arm comprises two partial arms which are movable relative to each other, the latching mechanism comprises a locking pin and an actuator, wherein the locking pin is accommodated between the ends of the two partial arms in the longitudinal direction of the switchable rocker arm and can connect or disconnect the two partial arms, for example, it is possible to provide recesses in the ends of the two partial arms, to provide the locking pin in one of the recesses and to be movable into the other recess, wherein the actuator is capable of actuating the locking pin such that the locking pin is movable between a connecting position and a disconnecting position distributed in the longitudinal direction of the switchable rocker arm, the locking pin fixedly connecting the two sub-arms in the connecting position, the locking pin releasing the fixed connection in the disconnecting position, so that the two sub-arms are capable of relative movement. According to the invention, a magnetic pole is provided on the end of the locking pin facing the actuator, which comprises a permanent magnet that can be rotated, so that the locking pin is moved between the connected position and the disconnected position.
In the present invention, the switchable swing arm has at least two partial arms, for example an inner arm and an outer arm can be provided which are defined by the relative positions of the partial arms. The two partial arms can be moved relative to one another, for example pivoted relative to one another. The locking mechanism according to the present invention can fixedly connect the two sub-arms by moving the locking pin of the locking mechanism so that the two sub-arms move as a unit. Thus, depending on the position of the locking pin, the switchable rocker arm has two states, namely a locked state in the connected position and an unlocked state in the disconnected position. In the locked state, the locking pin is in the connecting position and the two partial arms cannot be moved relative to one another, for example by form-fitting or the like. In the unlocked state, the locking pin is in a disengaged position which differs from the connected position, in which case the two partial arms can be moved relative to one another, for example by releasing the positive-locking connection described above. The present invention does not limit the connection relationship between the multiple sub-arms of the switchable rocker arm and the manner in which the relative movement is performed. Because the motion characteristics of the switchable rocker arm, particularly the two sub-arms, in the two states are different, the switchable rocker arm is used as a driven piece of the cam, the response of the cam driven by the cam shaft is different, the valve lift is different, and the switching function of the rocker arm is realized. The locking pin can be a cylinder or a cuboid as a whole, but can also be of other shapes. The locking pin can be arranged in either of the two partial arms in its longitudinal direction, that is to say it can be accommodated mainly by one partial arm in the axial or long-side direction and is connected to the other partial arm only in the locked state. For this purpose, a receiving space is provided in the respective partial arm for receiving a locking pin, in which the locking pin is moved when switching states.
According to the invention, a magnetic pole is provided on the end of the locking pin facing the actuator, which comprises a rotatable permanent magnet arranged rotatably on a relatively fixed component in the internal combustion engine. The permanent magnet of the actuator can have various shapes, such as a long bar or a U-shape. When the permanent magnet of the actuator is elongated, the two poles of the permanent magnet preferably intersect the permanent magnet at both longitudinal ends thereof, i.e., at both ends in the longer extension direction of the permanent magnet, with the rotational axis of the permanent magnet being substantially perpendicular to the direction of the magnetic induction line inside the permanent magnet and preferably at a middle position of the permanent magnet in the longitudinal direction. When the permanent magnet of the actuator is U-shaped or shoe-shaped, the two poles of the permanent magnet are preferably at the ends of the two legs of the permanent magnet, the axis of rotation of the permanent magnet is perpendicular to the plane formed by the two legs of the permanent magnet and the axis of rotation preferably intersects the permanent magnet at the junction of the two legs of the permanent magnet. Since the locking pin extends substantially in the longitudinal direction of the switchable rocker arm, i.e. in the direction of the largest dimension of the switchable rocker arm, and is located at the longitudinal end of the switchable rocker arm, it is possible to arrange the locking pin and the permanent magnet of the actuator close to and opposite each other with a spacing such that the outer end pole of the locking pin and the permanent magnet of the actuator are within the magnetic range of action, i.e. the magnetic force generated by the pole of the locking pin and the magnetic force generated by the permanent magnet of the actuator are able to attract or repel each other, thereby pushing or pulling the locking pin. For example, if the outer end magnetic pole of the locking pin is N-pole, when the permanent magnet of the actuator is rotated so that its N-pole is close to the locking pin, the locking pin and the actuator generate a repulsive force, thereby pushing the locking pin away from the actuator; and when the permanent magnet of the actuator is rotated so that the S pole thereof is close to the locking pin, the locking pin and the actuator generate an attractive force, thereby drawing back the locking pin to be close to the actuator. Thus, by means of the embodiment according to the invention, the special design of an oil channel for the locking mechanism can be avoided, so that the design and manufacture of the internal combustion engine can be simplified. Further, although the actuator is provided outside the rocker arm, since the design of the oil passage is omitted, a plurality of components such as the rocker arm, the hydraulic lifter, and the like can be designed accordingly in a simplified manner, and thus the size can be reduced, and therefore the overall structure and layout can be made more compact, and a compact internal combustion engine system can be constructed. In addition, because oil is not used as a medium, the flow speed of the oil does not need to be considered during design, and the locking mechanism can be controlled more quickly, flexibly and accurately.
In a preferred embodiment, the locking pin is in the plane of rotation of the permanent magnet of the actuator. In this case, the two poles of the permanent magnet of the actuator can be as close as possible to the locking pin in different states of the actuator, thereby increasing the attractive or repulsive force between the locking pin and the actuator.
In another preferred embodiment, a permanent magnet is arranged at the end of the locking pin facing the actuator. The permanent magnet can be elongated, for example, a cylinder or a rectangular parallelepiped, or the like. Advantageously, the lines of magnetic induction inside the permanent magnet extend substantially in the axial or long side of the permanent magnet, i.e. the outer end of the permanent magnet facing the actuator has only one pole. A permanent magnet is arranged at the end of the locking pin close to the actuator. So that the distance between the permanent magnet and the actuator can be reduced to enhance the attractive and repulsive forces therebetween.
Alternatively, the locking pin is made of a permanent magnetic material. Advantageously, the line of magnetic induction inside the locking pin extends substantially in the axial or long side of the locking pin, that is to say the outer end of the locking pin facing the actuator has only one magnetic pole. Thereby simplifying the process and facilitating the manufacture.
In a particularly advantageous embodiment, the permanent magnet of the actuator is driven in rotation by an electric motor. For example, a pivot axis can be provided in the longitudinal middle of the elongated magnet, or at the junction of the two legs of the U-shaped magnet. Such a rotary shaft constitutes the axis of rotation of the permanent magnets of the actuator and is driven by a motor. The end of the actuator facing the locking pin can thus be of the same or opposite magnetic polarity as the magnetic polarity of the end of the locking pin, whereby the locking pin is "pushed" by a repelling force or "pulled" by an attracting force.
Advantageously, the operation of the motor is controlled by an electronic control unit. The valve lift of the respective valve can thus be flexibly adjusted according to the configuration of the internal combustion engine and the actual operating conditions of the vehicle equipped with the internal combustion engine.
In another preferred embodiment, a shoulder for the stop is provided on the outer surface of the locking pin. Accordingly, a contour corresponding to the shoulder of the locking pin is provided on the inner wall of the receiving chamber receiving the locking pin, so that the locking pin can be stopped in the longitudinal direction of the switchable rocker arm, for example, can be prevented from sliding out of the rocker arm.
In a further preferred embodiment, a stop is provided on the side of the locking pin remote from the actuator, the stop being fixed in the partial arm accommodating the locking pin. For example, it can be provided that the stop has a sleeve section and, at the end of the sleeve remote from the locking pin, a flange extending outward perpendicular to the longitudinal direction of the switchable rocker arm, which is fixed, for example, positively on the inner wall of the receiving chamber of the respective partial arm for receiving the locking pin. Thereby, it is possible to prevent movement of the locking pin beyond a limit position, for example resulting in an excessive spacing of the magnetic poles of the locking pin and the actuator, such that the actuating force is insufficient to move the locking pin.
In a further preferred embodiment, an elastic element is provided on the side of the locking pin remote from the actuator, which elastic element can be tensioned in the direction of movement of the locking pin. For example, in the case of a stop, an elastic element is provided between the stop and the locking pin, which elastic element is tensioned in the longitudinal direction of the switchable rocker arm. Alternatively, an elastic element that can be tensioned in the direction of movement of the locking pin is provided on the side of the locking pin facing the actuator. The elastic member is, for example, a coil spring. In the actual operation of switching the valve, considering the fixed connection mode of the two sub-arms, the actuating force required by the locking pin in the locking process and the unlocking process may be different, so that the actuating force of the actuator can be designed to move the locking pin in the process of needing less actuating force, and meanwhile, elastic potential energy can be stored by compressing the elastic piece; while in the course of an additional need for more actuation force, the stored elastic potential energy can assist the actuator to move the locking pin together. Thereby ensuring reliable operation of the locking mechanism.
Advantageously, the end of the locking pin provided with the spring is designed hollow, so that the spring is accommodated in the cavity of the locking pin. For example, in the case of a stop, a cavity, for example cylindrical, can be provided on the side of the locking pin facing the stop, the sleeve section of the stop can project partially into the cavity of the locking pin, and the spring element can bear against the stop and against the bottom of the cavity. The longitudinal dimension of the switchable rocker arm can thereby be reduced, resulting in a more compact mechanism of the internal combustion engine. At the same time, the elastomer guides the movement of the locking pin.
In another preferred embodiment, the outer surface of the locking pin is hardened. Alternatively, the locking pin is made of hardened steel. Thereby reducing wear of the locking pin during movement.
The above technical problem is also solved by an internal combustion engine including the above locking mechanism. The internal combustion engine designed according to the invention does not need to separately design an oil passage for the locking mechanism therein, thereby being capable of being designed and manufactured more simply.
Drawings
Preferred embodiments of the present invention are schematically illustrated in the following with reference to the accompanying drawings. The attached drawings are as follows:
fig. 1 is a schematic cross-sectional view of a part of a valve train having a lock mechanism according to a preferred embodiment of the present invention.
Detailed Description
Fig. 1 schematically shows a part of a sectional view of a valve train for an internal combustion engine, which has a locking mechanism according to a preferred embodiment of the invention. Fig. 1 shows a cam 1, a switchable rocker arm 2, a valve stem 3 and a valve tappet 4 of a valve train. In the present embodiment, the switchable rocker arm 2 is a roller rocker arm, but the present invention is not limited to only a roller rocker arm. When the valve system is in operation, the cam 1 rotates with a camshaft (not shown), and the rotation of the cam 1 can move the switchable rocker arm 2, thereby moving the valve stem 3 connected to the switchable rocker arm 2. A valve stem 3 and a hydraulic valve lifter 4 are respectively arranged at both ends of the switchable rocker arm 2 in the longitudinal direction, so that the hydraulic valve lifter 4 can function as a lash adjuster for adjusting the valve clearance.
The switchable rocker arm 2 has an inner arm 5 and an outer arm 8 which can be pivoted relative to one another, the outer arm 8 having two plates which are located on either side of the plate-like inner arm 5 and extend in the longitudinal direction of the switchable rocker arm 2, respectively, with a transverse beam between them, which is shown in fig. 1 as a substantially rectangular cross section, the transverse beam of the outer arm 8 and the inner arm 5 being able to be fixedly connected by means of a latching mechanism.
The locking mechanism comprises a substantially cylindrical locking pin 9 and an actuator 7. A locking pin 9 is provided at the end of the cross-beam of the inner arm 5 near the outer wall 8. In the inner arm 5, a receiving space is provided for receiving the locking pin 9, which extends substantially in the longitudinal direction of the switchable rocker arm 2 and opens towards the transverse beam side of the outer arm 8. The locking pin 9 is moved by an actuator in the longitudinal direction of the switchable rocker arm 2 in a receiving chamber, the inner wall of which, extending in the longitudinal direction of the switchable rocker arm 2, has a guiding effect on the locking pin 9. The outer surface of the locking pin 9 is hardened or the locking pin 9 is made entirely of hardened steel, thereby reducing wear.
When the locking pin 9 is in the position shown in fig. 1, i.e. the connecting position, the locking pin 9 protrudes out of the receiving cavity of the inner arm 5 and pushes the cross beam of the outer arm 8 against the stop surface of the inner arm 5, so that the inner arm 5 and the outer arm 8 move in one unit without relative movement. When the locking pin 9 is in the disengaged position (not shown), the locking pin 9 is fully retracted into the receiving cavity of the inner arm 5, so that the locking pin 9 no longer exerts a force on the cross beam of the outer arm 8 and the cross beam of the outer arm 8 no longer abuts against the stop surface of the inner arm 5, so that the inner arm 5 and the outer arm 8 can pivot relative to each other. Since the locking pin 9 causes different motion characteristics of the inner arm 5 and the outer arm 8 at different positions, the switchable rocker arm acts as a follower of the cam 1, with different response to the cam 1 driven by the camshaft, and thus different valve lift.
A permanent magnet 6 is arranged on the locking pin of the locking mechanism, which permanent magnet 6 is, for example, a cylindrical or rectangular magnet, and the permanent magnet 6 is arranged at the end of the locking pin 9 close to the opening of the receiving cavity of the inner arm 5. In the present embodiment, the N pole of the permanent magnet 6 is disposed near the outer end.
The actuator 7 of the locking mechanism is designed as a rotatable bar-shaped permanent magnet 13, the bar-shaped permanent magnet 13 being rotatably arranged on a relatively fixed component in the internal combustion engine. As shown in the figure, a rotating shaft 12 perpendicular to the longitudinal direction of the bar permanent magnet 13 is arranged at the middle position of the longitudinal direction of the bar permanent magnet 13, and the axis of the rotating shaft 12 is the rotation axis of the bar permanent magnet 13. When the bar permanent magnet 13 is rotated so that the N pole of the bar permanent magnet 13 is close to the N pole of the permanent magnet 6 of the locking pin 9, the two permanent magnets 6, 13 repel each other, and this repelling force pushes the locking pin 9 to retract from the connection position into the receiving cavity of the inner arm 5 to the disconnection position. When the bar permanent magnet 13 is turned so that the S pole of the bar permanent magnet 13 is close to the N pole of the permanent magnet 6 of the locking pin 9, the two permanent magnets 6, 13 attract each other, which pulls the locking pin 9 to move from the disconnected position out of the receiving cavity of the inner arm 5 to the connected position. The rotary shaft 12 is driven by a motor, and the driving of the motor is controlled by an electronic control unit, so that the valve lift of the corresponding valve can be flexibly adjusted according to the configuration of the internal combustion engine and the actual operation of the vehicle equipped with the internal combustion engine.
A shoulder for a stop is provided on the outside of the locking pin 9. Accordingly, a contour corresponding to a shoulder of the locking pin 9 is provided at the inner arm of the receiving cavity of the inner arm 5, so that the locking pin 9 can be prevented from slipping out of the inner arm 5. A stop element 11 is arranged between the locking pin 9 and the bottom of the receiving space of the inner arm 5, the stop element 11 having a sleeve section and, at the end of the sleeve remote from the locking pin 9, a radially outwardly extending flange section, which for example clamps the stop element 11 to the inner arm of the receiving space of the inner arm 5, so that an excessive retraction of the locking pin into the receiving space of the inner arm 5 is prevented.
A cylindrical cavity is provided on the end face of the locking pin 9 facing the stop 11, into which cavity the sleeve section of the stop 11 can partially protrude. A coil spring 10 is also arranged in the cavity of the locking pin 9, which coil spring 10 encloses the sleeve section of the stop 11 at one end and bears against the flange section of the stop 11, and which coil spring 10 bears against the bottom of the cavity of the locking pin 9 at the other end, so that the coil spring 10 can be tensioned in the longitudinal direction of the switchable rocker arm. When the locking pin 9 is retracted into the housing of the inner arm 5, less power is required and the repulsive power of the actuator moves the locking pin 9 while compressing the helical spring 10, storing elastic potential energy. When the locking pin 9 extends out of the accommodating cavity of the inner arm 5, the required power is large, and the stored elastic potential energy can assist the actuator to pull out the locking pin 9 together, so that the reliable operation of the locking mechanism is ensured. At the same time, the helical spring 10 has a guiding effect on the locking pin 9.
Although possible embodiments have been described by way of example in the above description, it should be understood that numerous embodiment variations exist, still by way of combination of all technical features and embodiments that are known and that are obvious to a person skilled in the art. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the invention in any way. From the foregoing description, one of ordinary skill in the art will more particularly provide a technical guide to convert at least one exemplary embodiment, wherein various changes may be made, particularly in matters of function and structure of the components described, without departing from the scope of the following claims.
List of reference numerals
1 cam
2 Rocker arm
3 valve stem
4 valve lifter
5 inner arm
6 permanent magnet
7 actuator
8 outer wall
9 locking pin
10 spring
11 stop piece
12 rotating shaft
13 permanent magnet
Claims (10)
1. A latch mechanism for a switchable rocker arm (2), the switchable rocker arm (2) being for a valve train of an internal combustion engine, wherein the switchable rocker arm (2) comprises two sub-arms (5, 8) which are movable relative to each other, the latch mechanism comprising a locking pin (9) and an actuator (7), wherein the locking pin (9) is accommodated between longitudinal ends of the two sub-arms and can connect or disconnect the two sub-arms (5, 8), the actuator (7) being capable of actuating the locking pin (9) such that the locking pin (9) is moved between a connected position in which the two sub-arms (5, 8) are fixedly connected and a disconnected position in which the fixed connection is released,
characterized in that a magnetic pole is provided on the end of the locking pin (9) facing the actuator (7), the actuator (7) comprising a rotatable permanent magnet (13) such that the locking pin (9) is moved between the connected position and the disconnected position.
2. Locking mechanism according to claim 1, characterized in that the locking pin (9) is in the plane of rotation of the permanent magnet (13) of the actuator (7).
3. Locking mechanism according to claim 1, characterized in that a permanent magnet (6) is arranged on the end of the locking pin (9) facing the actuator (7).
4. Locking mechanism according to claim 1, characterized in that the locking pin (9) is made of a permanent magnetic material.
5. Locking mechanism according to claim 1, characterized in that the permanent magnet (13) of the actuator (7) is driven in rotation by an electric motor.
6. Locking mechanism according to claim 1, characterized in that a stop (11) is provided on the side of the locking pin (9) remote from the actuator (7), the stop (11) being fixed in a partial arm accommodating the locking pin (9).
7. Locking mechanism according to claim 1, characterized in that an elastic element (10) is provided on the side of the locking pin (9) remote from the actuator (7), which element can be tensioned in the direction of movement of the locking pin (9).
8. Locking mechanism according to claim 1, characterized in that an elastic element (10) is provided on the side of the locking pin (9) facing the actuator (7), which elastic element can be tensioned in the direction of movement of the locking pin (9).
9. Locking mechanism according to claim 7 or 8, characterized in that the end of the locking pin (9) provided with the elastic element is designed hollow, so that the elastic element (10) is accommodated in the cavity of the locking pin (9).
10. An internal combustion engine, characterized in that it has a locking mechanism according to any one of the preceding claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344328.XA CN111173586A (en) | 2018-11-13 | 2018-11-13 | Locking Mechanisms and Internal Combustion Engines for Switchable Rocker Arms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811344328.XA CN111173586A (en) | 2018-11-13 | 2018-11-13 | Locking Mechanisms and Internal Combustion Engines for Switchable Rocker Arms |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111173586A true CN111173586A (en) | 2020-05-19 |
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ID=70646186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811344328.XA Pending CN111173586A (en) | 2018-11-13 | 2018-11-13 | Locking Mechanisms and Internal Combustion Engines for Switchable Rocker Arms |
Country Status (1)
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| CN (1) | CN111173586A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238205B1 (en) * | 2000-05-13 | 2001-05-29 | Optimus International Ab | Burner assembly |
| CN102892977A (en) * | 2010-03-19 | 2013-01-23 | 伊顿公司 | Switching rocker arm |
| KR20130133545A (en) * | 2012-05-29 | 2013-12-09 | 현대자동차주식회사 | Engine that is equipped with variable valve device |
| DE102016210475A1 (en) * | 2016-06-14 | 2017-12-14 | Schaeffler Technologies AG & Co. KG | Switchable drag lever |
| US20180252306A1 (en) * | 2017-03-01 | 2018-09-06 | Schaeffler Technologies AG & Co. KG | Valve train retention clip with integrated locking pin anti-rotation feature |
-
2018
- 2018-11-13 CN CN201811344328.XA patent/CN111173586A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6238205B1 (en) * | 2000-05-13 | 2001-05-29 | Optimus International Ab | Burner assembly |
| CN102892977A (en) * | 2010-03-19 | 2013-01-23 | 伊顿公司 | Switching rocker arm |
| KR20130133545A (en) * | 2012-05-29 | 2013-12-09 | 현대자동차주식회사 | Engine that is equipped with variable valve device |
| DE102016210475A1 (en) * | 2016-06-14 | 2017-12-14 | Schaeffler Technologies AG & Co. KG | Switchable drag lever |
| US20180252306A1 (en) * | 2017-03-01 | 2018-09-06 | Schaeffler Technologies AG & Co. KG | Valve train retention clip with integrated locking pin anti-rotation feature |
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Application publication date: 20200519 |