Electromagnetic connection, brake, braking method, and engine, vehicle

Abstract

The electromagnetic connection portion, the brake, the braking method, and the engine and the vehicle according to the present application include a connection separation unit including a first component that is displaced in a first passage and a second component that is displaced in a second passage, for connecting or separating the first component that is displaced in the first passage and the second component that is displaced in the second passage, and a magnetic force generation member that is provided on the outside of the first component, for generating displacement in the first passage of the first component by attracting the first component using a magnetic force.

Description

Technical Field

[0001] This invention relates to an electromagnetic connector, a brake, an electromagnetic two-stroke brake, a braking method, as well as an engine and a vehicle. Background Technology

[0002] In the publicly disclosed engine compression-release brake system structure, the engine exhaust valve opens near the end of the engine's compression stroke, releasing the compressed gas at top dead center. This compression work is the main source of braking power for the compression-release brake system. The braking power generated during the subsequent expansion and exhaust strokes is only a small amount of mechanical and exhaust losses. If the engine's intake valve can reopen during the expansion stroke to allow air in, and the exhaust valve can reopen near the end of the exhaust stroke to release the compressed gas in the cylinder, then an additional amount of compression work can be obtained on top of the existing braking power of the compression-release brake system, further increasing the maximum braking power. This improvement is particularly significant in the low-to-medium speed range (common operating conditions) of the engine, meeting a wider range of vehicle braking needs.

[0003] The structure in US 2012 / 0024260 can achieve two-stroke braking, but it has the following shortcomings:

[0004] 1. This structure has many parts and is quite complex;

[0005] 2. The loss of movement mechanism in the middle of the valve bridge is prone to problems such as wear, loosening, jamming, and flying off, which can cause the valves to lose normal movement or fail to resume normal movement, resulting in serious consequences such as failure to ignite or damage to the valves.

[0006] 3. The brake piston lift is limited (generally no more than 3mm);

[0007] 4. The oil circuit needs to find a way to transmit the oil to the valve bridge. The valve bridge still needs an oil chamber and oil passage to establish high pressure. At high speed, the hydraulic braking fluctuates and becomes unstable. Summary of the Invention

[0008] The purpose of this invention is to provide an electromagnetic connection, a brake, a braking method, an engine, and a vehicle to solve the problems existing in the prior art.

[0009] To address the aforementioned problems, according to one aspect of the present invention, an electromagnetic connection is provided, comprising a displacement transmission unit, including a first component displacing within a first channel and a second component displacing within a second channel, for converting the displacement of the first component in the first channel into the displacement of the second component in the second channel, wherein the first channel and the second channel are connected but not parallel, and a magnetic force generating component is disposed outside the first component for attracting the first component with magnetic force to generate its displacement in the first channel.

[0010] In one example, when the magnetic force generating component is energized, the first component moves outward toward the first channel, causing the second component to move outward toward the second channel; when the magnetic force generating component is de-energized, the first component moves inward toward the first channel, causing the second component to move inward toward the second channel.

[0011] In one example, the second component includes a piston, a piston cylinder, and a double-link mechanism. The piston cylinder has a first channel and a second channel, which are connected and perpendicular to each other. The first component is disposed in the first channel, and the piston is connected to the double-link mechanism and disposed in the second channel. The magnetic force generating component moves the piston by controlling the movement of the first component to change the position of the link in the double-link mechanism.

[0012] In one example, the double-link mechanism includes an upper link and a lower link, the lower end of the upper link being movably connected to the upper end of the lower link, the upper end of the upper link being movably connected to the lower part of the piston, and the lower end of the lower link being movably connected to a support.

[0013] In one example, the first component includes a first movable member, a second movable member, and an elastic member. The first movable member and the second movable member are connected. The first movable member has a through hole through which the upper connecting rod and the lower connecting rod pass. A protrusion is provided in the through hole. The elastic member is disposed between the card seat and the first movable member. Under the action of the elastic member, the first movable member moves. The protrusion in the through hole of the first movable member contacts the double linkage mechanism, causing the upper connecting rod and the lower connecting rod to be in a < shape.

[0014] In one example, the second moving member is provided with a soft magnet. When the magnetic force generating component exerts an attractive force on the second moving member that is greater than the elastic force of the elastic member, the second moving member drives the first moving member to move. The inner wall of the through hole of the first moving member contacts the double linkage mechanism, so that the positions of the upper linkage and the lower linkage are in a straight line.

[0015] In one example, the protrusion is directly opposite the connection between the upper and lower links.

[0016] According to one aspect of the present invention, an electromagnetic brake is provided, comprising a brake rocker arm, an electromagnetic connecting portion, and a valve bridge. The electromagnetic connecting portion has a piston and a piston cylinder, the piston cylinder being connected to the valve bridge. One end of the brake rocker arm is connected to a brake cam, and the other end is located outside the piston, having a gap with the piston end. The electromagnetic connecting portion is the aforementioned electromagnetic connecting portion.

[0017] In one example, the valve bridge is connected to the brake valve, and in the braking state, the piston contacts the brake rocker arm, and the brake cam is connected to the brake valve.

[0018] According to one aspect of the present invention, an engine is provided, including the electromagnetic brake described above.

[0019] According to one aspect of the present invention, a vehicle is provided, comprising the engine described above.

[0020] According to one aspect of the present invention, a braking method for an electromagnetic brake is provided, comprising the following steps:

[0021] In the non-braking state, the electromagnet is not energized, the first moving part moves inward to change the position of the upper connecting rod and the lower connecting rod, causing the piston to move inward, and the brake cam is disconnected from the brake valve;

[0022] In the braking state, the electromagnet is energized, and the magnetic force generating component generates an attractive force on the second moving part, which overcomes the elastic force of the elastic element and drives the first moving part to move outward. This changes the position of the upper connecting rod and the lower connecting rod, causing the piston to move outward, and the brake cam establishes a connection with the brake valve.

[0023] According to one aspect of the present invention, an electromagnetic connection is provided, comprising a connection and separation unit, including a first component displaced in a first channel and a second component displaced in a second channel, for connecting or separating the first component displaced in the first channel and the second component displaced in the second channel, and a magnetic force generating component disposed outside the first component for attracting the first component with magnetic force to generate displacement in its first channel.

[0024] In one example, when the magnetic force generating component is energized, the first component moves outward toward the first channel, separating the first component from the second component; when the magnetic force generating component is de-energized, the first component moves inward toward the first channel, connecting the first component to the second component.

[0025] In one example, the connection / disconnection unit further includes a piston cylinder, the second component includes a piston and a spring, the first component includes a movable latch and a soft magnet, the piston cylinder has a first channel and a second channel, the first channel and the second channel are connected and not parallel, the piston and the spring are both disposed in the second channel, the movable latch is disposed in the first channel, the piston has a concave groove, the movable latch has a protrusion that matches the groove, and the magnetic force generating component applies force to the movable latch to control the movement of the movable latch in the first channel to achieve connection and disconnection with the piston.

[0026] According to one aspect of the present invention, an electromagnetic brake is provided, comprising: a braking unit and an exhaust unit. The braking unit includes a brake rocker arm, a first electromagnetic connection portion, and a first valve bridge. The first electromagnetic connection portion is the aforementioned electromagnetic connection portion, having a first piston and a first piston cylinder. One end of the brake rocker arm is connected to a brake cam, and the other end is located outside the first piston, with a gap between it and the end of the first piston. The first valve bridge is connected to the first piston cylinder and a brake valve. The exhaust unit includes an exhaust rocker arm, a second electromagnetic connection portion, and a second valve bridge. The second electromagnetic connection portion is the aforementioned electromagnetic connection portion, having a second piston and a second piston cylinder. One end of the exhaust rocker arm is connected to an exhaust cam, and the other end is located outside the second piston, with a gap between it and the end of the second piston. The second valve bridge is connected to the second piston cylinder and an exhaust valve. The first valve bridge and the second valve bridge are integrally connected. In the exhaust state, the brake cam is disconnected from the brake valve, and the exhaust cam is connected to the exhaust valve and the brake valve. In the braking state, the brake cam is connected to the brake valve, and the exhaust cam is disconnected from the exhaust valve and the brake valve.

[0027] According to one aspect of the present invention, an electromagnetic brake is provided, comprising an exhaust unit and a braking unit. The exhaust unit includes a magnetic force generating component, an exhaust rocker arm, and a valve bridge unit. The electromagnetic connection part is the aforementioned electromagnetic connection part. The magnetic force generating component is disposed outside the exhaust piston unit and is used to control the movement of the moving latch in the first channel. One end of the exhaust rocker arm is connected to an exhaust cam, and the other end is located outside the exhaust piston, having a gap with the end of the exhaust piston. The braking unit includes a braking rocker arm and a braking piston unit. The braking piston unit includes a braking piston, a braking piston cylinder, and a braking spring. The brake lever has one end connected to the brake cam and the other end located outside the brake piston, with a gap between it and the end of the brake piston. The valve bridge unit includes a valve bridge, a linkage mechanism, and a linkage spring. The brake piston cylinder and the exhaust piston cylinder are mounted on the valve bridge. One end of the valve bridge is connected to the exhaust valve and the other end is connected to the brake valve. In the exhaust state, the brake cam is disconnected from the brake valve, and the exhaust cam is connected to both the exhaust valve and the brake valve. In the braking state, the brake cam is connected to the brake valve, and the exhaust cam is disconnected from both the exhaust valve and the brake valve.

[0028] According to one aspect of the present invention, an electromagnetic 1.5-stroke brake is provided, comprising the electromagnetic brake described above.

[0029] According to one aspect of the present invention, an electromagnetic two-stroke brake is provided, comprising an intake-side electromagnetic brake and an exhaust-side electromagnetic brake, wherein the intake-side electromagnetic brake is the electromagnetic brake described above, and the exhaust-side electromagnetic brake is the electromagnetic brake described above.

[0030] According to one aspect of the present invention, an engine is provided, including the electromagnetic brake described above.

[0031] According to one aspect of the present invention, a vehicle is provided, comprising the engine described above.

[0032] According to one aspect of the present invention, a braking method for an electromagnetic brake is provided, comprising the following steps:

[0033] In the exhaust state, the electromagnet is not energized, the exhaust latch moves inward, locking the exhaust piston, and the exhaust piston establishes a rigid connection with the valve bridge. The exhaust cam establishes a connection with the exhaust valve and the brake valve.

[0034] The corresponding connecting rod at the other end of the brake latch moves outward, the brake piston can move freely in the vertical direction, and the brake cam is disconnected from the brake valve;

[0035] When braking, the electromagnet is energized, and the soft magnet on the outside of the exhaust latch is driven by the force of the electromagnet to overcome the spring force and move the exhaust latch outward, thereby causing the exhaust latch to disengage from the exhaust piston. The exhaust piston can slide freely in the vertical direction relative to the valve bridge, and the exhaust cam is disconnected from the exhaust valve and the brake valve.

[0036] The corresponding connecting rod moves the brake latch inward, locking the brake piston, thus establishing a rigid connection between the brake piston and the valve bridge, and establishing a connection between the brake cam and the brake valve.

[0037] In one example, the function of a traditional compression-release brake can be achieved by controlling only the braking unit with an electromagnet.

[0038] According to one aspect of the present invention, a two-stroke braking method is provided, comprising an intake-side electromagnetic brake and an exhaust-side electromagnetic brake, wherein both the braking method of the intake-side electromagnetic brake and the braking method of the exhaust-side electromagnetic brake employ the aforementioned braking method of the electromagnetic brake. Attached Figure Description

[0039] Figure 1 This is a three-dimensional schematic diagram of an electromagnetic brake according to Embodiment 1 of the present invention;

[0040] Figure 2 This is a schematic cross-sectional view of the double-link shape when the electromagnet is not energized in Embodiment 1 of the present invention;

[0041] Figure 3This is a schematic cross-sectional view of the double-link shape when the electromagnet is energized in Embodiment 1 of the present invention;

[0042] Figure 4 This is a three-dimensional schematic diagram of the piston in Embodiment 1 of the present invention;

[0043] Figure 5 This is a three-dimensional schematic diagram of the first moving part in Embodiment 1 of the present invention;

[0044] Figure 6 This is a cross-sectional schematic diagram of a moving component when the electromagnet is energized in Embodiment 1 of the present invention;

[0045] Figure 7 This is a cross-sectional schematic diagram of a moving component when the electromagnet is not energized in Embodiment 1 of the present invention;

[0046] Figure 8 This is a three-dimensional schematic diagram of another first moving part in Embodiment 1 of the present invention;

[0047] Figure 9 This is a schematic diagram of the connection between the piston and the moving part in Embodiment 2 of the present invention;

[0048] Figure 10 This is a three-dimensional schematic diagram of the electromagnetic brake in Embodiment 3 of the present invention;

[0049] Figure 11 This is a three-dimensional schematic diagram of the linkage mechanism and valve bridge in Embodiment 3 of the present invention;

[0050] Figure 12 This is a cross-sectional schematic diagram of the connection between the exhaust moving latch and the exhaust piston in Embodiment 3 of the present invention;

[0051] Figure 13 This is a cross-sectional schematic diagram of the separation of the brake moving latch and the brake piston in Embodiment 3 of the present invention;

[0052] Figure 14 This is a cross-sectional schematic diagram of the separation of the exhaust moving latch and the exhaust piston in Embodiment 3 of the present invention;

[0053] Figure 15 This is a cross-sectional schematic diagram of the connection between the brake moving latch and the brake piston in Embodiment 3 of the present invention;

[0054] Figure 16 This is a three-dimensional schematic diagram of the movable latch in Embodiment 3 of the present invention. Detailed Implementation

[0055] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so as to better understand the purpose, features and advantages of the present invention. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the present invention, but are only for illustrating the essential spirit of the technical solution of the present invention.

[0056] In the following description, certain specific details are set forth for the purpose of illustrating various disclosed embodiments in order to provide a thorough understanding of the various disclosed embodiments. However, those skilled in the art will recognize that embodiments may be practiced without one or more of these specific details. In other instances, well-known apparatuses, structures, and techniques associated with this application may not have been shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

[0057] Throughout this specification, references to "an embodiment" or "an embodiment" indicate that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Therefore, the appearance of "in an embodiment" or "an embodiment" in various places throughout the specification does not necessarily refer to the same embodiment. Furthermore, a particular feature, structure, or characteristic may be combined in any manner in one or more embodiments.

[0058] In the following description, in order to clearly demonstrate the structure and working method of the present invention, a number of directional terms will be used. However, terms such as "front", "back", "left", "right", "outside", "inside", "outward", "inward", "up", and "down" should be understood as convenient terms and not as limiting terms.

[0059] Example 1

[0060] This embodiment provides an electromagnetic connector, a brake, a braking method, an engine, and a vehicle.

[0061] This embodiment provides an electromagnetic connection part, including a displacement transmission unit, a first component displacing within a first channel, and a second component displacing within a second channel, for converting the displacement of the first component in the first channel into the displacement of the second component in the second channel. The first channel and the second channel are connected but not parallel. A magnetic force generating component is disposed outside the first component, for using magnetic force to attract the first component and generate its displacement in the first channel. In this embodiment, the first channel is vertically arranged, the second channel is horizontally arranged, and the first and second channels are connected and perpendicular.

[0062] In one example, the second component includes a piston, a piston cylinder, and a double-link mechanism. The piston cylinder has a first channel and a second channel, which are connected and perpendicular to each other. The first component is disposed in the first channel, and the piston is connected to the double-link mechanism and disposed in the second channel. The magnetic force generating component moves the piston by controlling the movement of the first component to change the position of the link in the double-link mechanism.

[0063] In one example, the double-link mechanism includes an upper link and a lower link, the lower end of the upper link being movably connected to the upper end of the lower link, the upper end of the upper link being movably connected to the lower part of the piston, and the lower end of the lower link being movably connected to a support.

[0064] In one example, the first component includes a first movable member, a second movable member, and an elastic member. The first movable member and the second movable member are connected. The first movable member has a through hole through which the upper connecting rod and the lower connecting rod pass. A protrusion is provided in the through hole. The elastic member is disposed between the card seat and the first movable member. Under the action of the elastic member, the first movable member moves. The protrusion in the through hole of the first movable member contacts the double linkage mechanism, causing the upper connecting rod and the lower connecting rod to be in a < shape.

[0065] In one example, the second moving member is provided with a soft magnet. When the magnetic force generating component exerts an attractive force on the second moving member that is greater than the elastic force of the elastic member, the second moving member drives the first moving member to move. The inner wall of the through hole of the first moving member contacts the double linkage mechanism, so that the positions of the upper linkage and the lower linkage are in a straight line.

[0066] In one example, the protrusion is directly opposite the connection between the upper and lower links.

[0067] In one example, when the magnetic force generating component is energized, the first component moves outward toward the first channel, causing the second component to move outward toward the second channel; when the magnetic force generating component is de-energized, the first component moves inward toward the first channel, causing the second component to move inward toward the second channel.

[0068] like Figure 1 , Figure 2 , Figure 3 As shown, the electromagnetic brake includes an electromagnetic connection part, a brake rocker arm 38, and a valve bridge 39.

[0069] The electromagnetic connection includes a piston unit and an electromagnetic unit.

[0070] Piston unit, including such Figure 4 The piston 11, piston cylinder 12, double linkage mechanism, and moving assembly shown are...

[0071] The piston cylinder 12 has a first channel 121 and a second channel 122, which are connected and perpendicular to each other. The piston 11 is connected to a double linkage mechanism and both are located in the cylinder. Figure 2 The moving component is located in the first vertical channel 121 and the second horizontal channel 122.

[0072] In this embodiment, the double linkage mechanism includes an upper linkage 16 and a lower linkage 17. The lower end of the upper linkage 16 is movably connected to the upper end of the lower linkage 17. The upper end 161 of the upper linkage is movably connected to the lower part of the piston 11. The lower end 171 of the lower linkage 17 is movably connected to the support 15.

[0073] In this embodiment, the moving component includes a first moving member 141, a second moving member 142, and an elastic member 143. The first moving member 141 and the second moving member 142 are connected, such as... Figure 5 As shown, the first moving member 141 is provided with a first through hole 1411 and a second through hole 1412. The first through hole 1411 and the second through hole 1412 are connected and perpendicular. The upper connecting rod 16 and the lower connecting rod 17 pass through the first through hole 1411. One end of the second moving member 142 passes through the second through hole 1412, and the other end is provided with a soft magnet, located outside the opening of the second channel 122. The elastic member 143 is disposed between the card holder 144 and the first moving member 141. In this embodiment, the elastic member 143 is a spring. The card holder 144 is disposed inside the second channel 122. Under the action of the elastic member 143, the first moving member 141 drives the second moving member 142 to move. The end of the second moving member 142 contacts the double linkage mechanism, so that the positions of the upper connecting rod 16 and the lower connecting rod 17 are in a < shape.

[0074] In one embodiment, such as Figure 6 , Figure 8 As shown, the first moving member 141A may not have a second through hole. Instead, a protrusion 1413 (equivalent to the end of the second moving member 142) is provided in the first through hole 1411. Under the action of the elastic member 143, the first moving member 141A moves, and the protrusion 1413 in the through hole of the first moving member contacts the double linkage mechanism, so that the upper link 16 and the lower link 17 are in a < shape.

[0075] The electromagnetic unit includes a magnetic force generating component 20, which is disposed on the outside of the moving assembly, specifically on the outside of the end of the second moving member 142A. The magnetic force generating component 20 is positioned directly opposite the soft magnet at the end of the second moving member 142A. The magnetic force generating component 20 controls the attraction and release of the soft magnet by energizing or de-energizing it, thereby controlling the movement of the second moving member 142A in the second channel 122, thus realizing the control of the position and shape of the double-link mechanism by the moving assembly. The magnetic force generating component includes an electromagnet and control circuitry, and the control logic is the same as that of the solenoid valve in existing brakes.

[0076] like Figure 1 , Figure 2 , Figure 3 As shown, one end of the brake rocker arm 38 is connected to the brake cam ZT, and the other end is located above the end of the piston 11, with a gap between it and the end of the piston 11, which is adjustable.

[0077] When the magnetic force generating component 20 exerts a greater attractive force on the second moving member 142 than the elastic force of the elastic member 143, the second moving member 142 drives the first moving member 141 to move. The inner wall of the through hole of the first moving member 141 contacts the double linkage mechanism, causing the upper link 16 and the lower link 17 to be positioned as follows: Figure 3 or Figure 7 The straight line shown.

[0078] In one example, the protrusion 1413 is directly opposite the connection between the upper and lower connecting rods.

[0079] The valve bridge 39 is connected to the brake valve 101. In the braking state, the top of the piston 11 contacts the brake rocker arm 38, and the brake cam is connected to the brake valve.

[0080] This embodiment also provides an engine, including the electromagnetic brake described above.

[0081] This embodiment also provides a means of transportation, including the engine described above. The means of transportation includes automobiles, ships, etc.

[0082] This embodiment provides a braking method for an electromagnetic brake, including the following steps:

[0083] In the non-braking state, the electromagnet is not energized, the first moving part moves inward to change the position of the upper connecting rod and the lower connecting rod, causing the piston to move inward into the first channel, and the brake cam is disconnected from the brake valve;

[0084] In the braking state, the electromagnet is energized, and the magnetic force generating component generates an attractive force on the second moving part, which overcomes the elastic force of the elastic element and drives the first moving part to move outward. This changes the position of the upper connecting rod and the lower connecting rod, causing the piston to move outward toward the second channel, and the brake cam establishes a connection with the brake valve.

[0085] Example 2

[0086] The other structures in this embodiment are the same as in Embodiment 1, except that in this embodiment, the moving component 1 replaces the moving component in Embodiment 1, and the translation mechanism replaces the double linkage mechanism in Embodiment 1.

[0087] In the embodiments, such as Figure 9 As shown, the moving component 1 includes a moving part 148, an elastic part 143, and a card holder 144.

[0088] The translation mechanism includes a wedge block 37, a lifting rod 36, and a roller 361.

[0089] The inclined block 37 has a right-angled triangle cross section. One end of the lifting rod 36 is connected to the lower part of the piston 11A, and the other end is provided with a roller 361. The roller 361 is set on the inclined surface of the inclined block 37. One end of the moving part 148 is connected to the lower end of the inclined block 37 on the inclined surface, and the other end is provided with a soft magnet, located outside the second channel 123 of the piston 12A.

[0090] When the magnetic force generating component exerts an attractive force on the moving member 148 that is greater than the elastic force of the elastic member 143, the moving member 148 drives the inclined block 37 to move. The outward movement of the inclined block 37 causes the lifting rod 36 to rise along the inclined plane, thereby causing the piston 11A to move upward.

[0091] In the non-braking state, the electromagnet is not energized, and the moving part 148 moves inward, causing the inclined block 37 to move inward, so that the lifting rod 36 descends along the inclined plane, causing the piston 11 to... Figure 9 As the brake cam moves downwards, it disconnects from the brake valve.

[0092] When the electromagnet is energized, the magnetic force generating component exerts an attractive force on the moving part 148, overcoming...

[0093] The elastic force of the elastic element causes the moving part 148 to move outward, which in turn causes the inclined block 37 to move outward, so that the lifting rod 36 rises along the inclined plane, causing the piston 11A to... Figure 9 As the brake cam moves upward, it connects with the brake valve.

[0094] Compared with existing technologies, the electromagnet-driven double-link structure of this embodiment can eliminate many parts or structures:

[0095] The rocker arm shaft does not require a brake hydraulic circuit;

[0096] The braking rocker arm eliminates the need for a braking mechanism, reducing the rocker arm's moment of inertia.

[0097] The valve bridge requires no oil passages or high-pressure oil lines;

[0098] It eliminates the need for solenoid valve seats and solenoid valves, and its response speed is faster than that of solenoid valves controlling oil circuits.

[0099] The entire braking system requires less height, which can reduce the height of the cover (engine unit).

[0100] Example 3

[0101] This embodiment provides an electromagnetic connector, a brake and an electromagnetic two-stroke brake, a braking method, an engine, and a vehicle.

[0102] This embodiment provides an electromagnetic connection part, including a connection and separation unit, comprising a first component displaced in a first channel and a second component displaced in a second channel, for connecting or separating the first component displaced in the first channel and the second component displaced in the second channel. A magnetic force generating component is disposed outside the first component, for attracting the first component with magnetic force to generate displacement in its first channel.

[0103] In one example, when the magnetic force generating component is energized, the first component moves outward toward the first channel, separating the first component from the second component; when the magnetic force generating component is de-energized, the first component moves inward toward the first channel, connecting the first component to the second component.

[0104] In one example, the connection / disconnection unit further includes a piston cylinder, the second component includes a piston and a spring, the first component includes a movable latch and a soft magnet, the piston cylinder has a first channel and a second channel, the first channel and the second channel are connected and not parallel, the piston and the spring are both disposed in the second channel, the movable latch is disposed in the first channel, the piston has a concave groove, the movable latch has a protrusion that matches the groove, and the magnetic force generating component applies force to the movable latch to control the movement of the movable latch in the first channel to achieve connection and disconnection with the piston.

[0105] In this embodiment, an exhaust-side electromagnetic brake is used for illustration. Figure 10 , Figure 11 , Figure 12 As shown, the electromagnetic brake on the exhaust side includes an exhaust unit and a braking unit.

[0106] The exhaust unit includes an electromagnetic connector, an exhaust rocker arm 18, and a valve bridge unit.

[0107] The electromagnetic connection includes a connection separation unit and an electromagnetic unit.

[0108] Figure 12 In the middle, the connecting and separating unit is the exhaust piston unit 10, which has an exhaust piston 11, an exhaust piston cylinder 12, a spring 13 and an exhaust moving latch 14.

[0109] The exhaust piston cylinder 12 has a first channel 121 and a second channel 122. The first channel 121 and the second channel 122 are connected but not parallel. In the embodiment, the first channel 121 and the second channel 122 are perpendicular.

[0110] The exhaust piston 11 and spring 13 are both disposed in the vertical first channel 121, and the exhaust moving latch 14 is disposed in the horizontal second channel 122. The exhaust piston 11 has an inwardly recessed groove 111, and the exhaust moving latch 14 has a groove matching the groove 111. Figure 7 The protrusion 140 shown connects the exhaust piston 11 to the exhaust moving latch 14 through the engagement of the protrusion 140 and the groove 111. Figure 12 The connection status of protrusion 140 and groove 111 is shown.

[0111] The exhaust moving latch 14 is also provided with a soft magnet 142 at the end away from the protrusion 140.

[0112] The electromagnetic unit includes a magnetic force generating component, which is disposed outside the exhaust piston unit 10, specifically facing the soft magnet 142. The magnetic force generating component controls the attraction and release of the soft magnet 142 by energizing or de-energizing it, thereby controlling the movement of the exhaust moving latch 14 in the second channel 122, realizing the connection and separation of the exhaust moving latch 14 from the exhaust piston 11. The magnetic force generating component includes an electromagnet and control circuitry, and the control logic is the same as that of the solenoid valve in existing compression-release brakes.

[0113] One end of the exhaust rocker arm 18 is provided with a transmission wheel 181 connected to the exhaust cam PT, and the other end is located outside the top of the exhaust piston 11, with a gap between it and the top of the exhaust piston 11, which is adjustable.

[0114] The braking unit includes a brake rocker arm 28 and a brake piston unit 20.

[0115] The structure of the brake piston unit 20 is the same as that of the exhaust piston unit 10, including a brake piston 21, a brake piston cylinder 22, a brake spring 23, and a brake moving latch 24.

[0116] One end of the brake rocker arm 28 is provided with a transmission wheel 281 connected to the brake cam ZT, and the other end is located on the outer side of the top of the brake piston 21, with a gap between it and the top of the brake piston 21. This gap is adjustable.

[0117] like Figure 10 , 11 As shown, the valve bridge unit includes a valve bridge 191, a linkage mechanism, and a spring 193.

[0118] The brake piston cylinder and exhaust piston cylinder 12 are mounted on the valve bridge 191. One end of the valve bridge 191 is connected to the exhaust valve 101, and the other end is connected to the brake valve 201. In this embodiment, the brake piston cylinder 22, exhaust piston cylinder 12, and valve bridge 191 are integrated, with the exhaust piston cylinder 12 located in the middle of the valve bridge 191. In the exhaust state, the valve bridge 191 can simultaneously open both the exhaust valve 101 and the brake valve 201. In the braking state, the valve bridge 191 tilts at an angle, opening only the brake valve 201, while the exhaust valve 101 on the other side remains closed.

[0119] like Figure 11 As shown, the linkage mechanism has a link 192, in which a fulcrum (a fixed hinge in the embodiment) 1921 is provided. The link 192 can rotate around the fulcrum 1921. One end of the link 192 is connected to the exhaust moving latch 14, and the other end is connected to the brake moving latch 24. A spring 193 is provided on the side of the link 192 near the brake moving latch 24. Under the action of the spring 193, the exhaust moving latch 14 moves inward and connects with the exhaust piston 11, so that the exhaust piston 11 and the valve bridge 191 are rigidly connected.

[0120] In the exhaust state, the brake cam ZT is disconnected from the brake valve 201, and the exhaust cam PT is connected to the exhaust valve 101 and the brake valve 201.

[0121] The valve bridge 191 integrates an exhaust piston unit 10 and a brake piston unit 20. Each piston unit has a spring as a clearance compensation device. Horizontal holes are arranged in the horizontal direction corresponding to the two pistons, and the movable latches can slide inside. There is a connecting rod between the two movable latches, and a fulcrum at the midpoint of the connecting rod ensures that the movement directions of the latches on both sides are opposite.

[0122] like Figure 12 As shown, in the exhaust state, the electromagnet is not energized, and the connecting rod 192, under the spring force of the spring 193, pushes the exhaust moving latch 14 inward, causing the exhaust moving latch 14 to lock the exhaust piston 11. The exhaust piston 11 is rigidly connected to the valve bridge 191, and the exhaust cam is connected to the valve. Simultaneously, the connecting rod 192 causes the other end of the valve to... Figure 13 The brake movement latch 24 shown moves outward without limiting the brake piston 21. The brake piston 21 can move freely in the vertical direction under the action of the spring 23, which can play the role of gap compensation. The brake cam ZT is disconnected from the brake valve 201.

[0123] In braking condition, the brake cam ZT is connected to the brake valve 201, and the exhaust cam PT is disconnected from the exhaust valve 101 and the brake valve 201.

[0124] like Figure 14As shown, in the braking state, the electromagnet is energized, and the soft magnet 142 on the outside of the exhaust moving latch 14 is attracted by the electromagnet, overcoming the spring force of the spring 193, causing the exhaust moving latch 14 to move outward. This cancels the limiting action of the exhaust piston 11, allowing the exhaust moving latch 14 to disengage from the exhaust piston 11. The exhaust piston 11 and the valve bridge 191 enter a collapsible state, enabling relative movement and cutting off the drive chain between the exhaust cam PT and the valve 101. Simultaneously, the connecting rod 192 causes the other end to... Figure 15 The brake moving latch 24 shown moves inward, locking the brake piston 21, so that the brake piston 21 is rigidly connected to the valve bridge 191, and the brake cam ZT is connected to the brake valve 201.

[0125] In this embodiment, a control unit is also included to control the action of the electromagnetic unit on the exhaust moving latch 14.

[0126] In one embodiment, instead of a linkage mechanism, two electromagnetic units can be used to control the movement of the exhaust moving latch 14 and the brake moving latch 24 respectively.

[0127] In one embodiment, the electromagnetic brake described above can be used to form a 1.5-stroke brake, which has a significantly higher braking power than the traditional compression-release brake.

[0128] In one embodiment, if the intake side also uses the electromagnetic brake described above, a complete two-stroke brake system can be formed. Its braking power is significantly improved compared to traditional compression-release brakes, theoretically reaching more than twice the power.

[0129] In one embodiment, if only the braking unit is arranged in the valve bridge 191, the electromagnet can independently control the brake latch (disconnecting from the brake piston in the exhaust state and locking the brake piston in the braking state), which can also achieve the traditional compression braking function.

[0130] This embodiment also provides an engine, including the electromagnetic brake described above.

[0131] This embodiment also provides a means of transportation, including the engine described above. The means of transportation include automobiles, ships, etc.

[0132] This embodiment also provides a braking method for an electromagnetic brake, including the following steps:

[0133] In the exhaust state, the electromagnet is not energized, the exhaust latch moves inward, locking the exhaust piston, and the exhaust piston establishes a rigid connection with the valve bridge. The exhaust cam establishes a connection with the exhaust valve and the brake valve.

[0134] The corresponding connecting rod at the other end of the brake latch moves outward, the brake piston can move freely in the vertical direction, and the brake cam is disconnected from the brake valve;

[0135] When braking, the electromagnet is energized, and the soft magnet on the outside of the exhaust latch is driven by the force of the electromagnet to overcome the spring force and move the exhaust latch outward, thereby causing the exhaust latch to disengage from the exhaust piston. The exhaust piston can slide freely in the vertical direction relative to the valve bridge, and the exhaust cam is disconnected from the exhaust valve and the brake valve.

[0136] The corresponding connecting rod moves the brake latch inward, locking the brake piston, thus establishing a rigid connection between the brake piston and the valve bridge, and establishing a connection between the brake cam and the brake valve.

[0137] Compared with existing technologies, the structure of the electromagnet-driven latch in this embodiment can eliminate many parts or structures:

[0138] The rocker arm shaft does not require a brake hydraulic circuit;

[0139] The braking rocker arm requires no braking mechanism;

[0140] The valve bridge requires no oil passages or high-pressure oil lines;

[0141] The rocker arm does not require a clearance compensation mechanism, therefore the entire braking system does not require a compression spring bracket; and it does not require a solenoid valve seat or solenoid valve.

[0142] In addition, the motion loss mechanism in the middle of the valve bridge adopts a new structure, which can solve problems such as wear, loosening, jamming, and fly-out.

[0143] In the structure of the embodiment, it is not necessary to integrate the braking mechanism into the brake rocker arm, so the brake piston lift can be increased;

[0144] The latch structure replaces high-pressure oil, enabling the piston and valve bridge to establish a truly rigid connection, thus preventing brake instability at high engine speeds.

[0145] The embodiments have the following advantages:

[0146] The simple structure, with the latch driven by an electromagnet, eliminates many parts and structures: the rocker arm shaft requires no brake oil circuit; the brake rocker arm requires no brake mechanism; the valve bridge requires no oil passage or high-pressure oil circuit; the rocker arm requires no clearance compensation mechanism, thus the entire braking system does not require a compression spring bracket; and there is no need for an electromagnetic valve seat or electromagnetic valve. This reduces the height of the braking system, facilitating its layout, and also reduces the height of the engine cover.

[0147] The key to the embodiment lies in the electromagnet. With the addition of the electromagnet, the mechanism can perform the switching between ignition and braking.

[0148] Furthermore, the movable latch can be modified in structure, employing, for example, a rocker block or a pin structure.

[0149] The preferred embodiments of the present invention have been described in detail above. However, it should be understood that after reading the above teachings, those skilled in the art can make various alterations or modifications to the present invention. These equivalent forms also fall within the scope defined by the appended claims.

Claims

1. An electromagnetic connection part for an electromagnetic brake of an engine, characterized in that, include: The connection / separation unit includes a first component that displaces within a first channel and a second component that displaces within a second channel, for connecting or separating the first component that displaces within the first channel and the second component that displaces within the second channel. A magnetic force generating component, disposed on the outside of the first component, is used to generate displacement in its first channel by using magnetic force to attract the first component. When the magnetic force generating component is energized, the first component moves outward from the first channel, causing the first component to separate from the second component. When the magnetic force generating component is de-energized, the first component moves inward into the first channel, connecting the first component with the second component. The connection / separation unit also includes a piston cylinder, the second component includes a piston and a spring, and the first component includes a moving latch and a soft magnet. The piston cylinder has a first channel and a second channel, which are connected but not parallel. Both the piston and the spring are disposed within the second channel, and the movable latch is disposed within the first channel. The piston has a recessed groove, and the movable latch has a protrusion that matches the groove. The magnetic force generating component applies force to the movable latch, controlling the movement of the movable latch in the first channel to achieve connection and separation with the piston.

2. An electromagnetic brake, characterized in that, include: Braking unit and exhaust unit, The braking unit includes a brake rocker arm, a first electromagnetic connector, and a first valve bridge. The first electromagnetic connector is the electromagnetic connector as described in claim 1, and has a first piston and a first piston cylinder. One end of the brake rocker arm is connected to a brake cam, and the other end is located outside the first piston, with a gap between it and the end of the first piston. The first valve bridge is connected to the first piston cylinder and the brake valve. The exhaust unit includes an exhaust rocker arm, a second electromagnetic connector, and a second valve bridge. The second electromagnetic connector is the electromagnetic connector as described in claim 1, and has a second piston and a second piston cylinder. One end of the exhaust rocker arm is connected to an exhaust cam, and the other end is located outside the second piston, with a gap between it and the end of the second piston. The second valve bridge is connected to the second piston cylinder and the exhaust valve. The first valve bridge and the second valve bridge are integrated. In the exhaust state, the brake cam is disconnected from the brake valve, and the exhaust cam is connected to both the exhaust valve and the brake valve. In braking mode, the brake cam is connected to the brake valve, and the exhaust cam is disconnected from both the exhaust valve and the brake valve.

3. An electromagnetic brake, characterized in that, include: Exhaust unit and braking unit, The exhaust unit includes an electromagnetic connector, an exhaust rocker arm, and a valve bridge unit. The electromagnetic connection part is the electromagnetic connection part as described in claim 1. The magnetic force generating component is located on the outside of the exhaust piston unit and is used to control the movement of the moving latch in the first channel. One end of the exhaust rocker arm is connected to the exhaust cam, and the other end is located outside the exhaust piston, with a gap between it and the end of the exhaust piston. The braking unit includes a brake rocker arm and a brake piston unit. The brake piston unit includes a brake piston, a brake piston cylinder, a brake spring, and a brake moving latch. One end of the brake rocker arm is connected to a brake cam, and the other end is located outside the brake piston, with a gap between it and the end of the brake piston. The valve bridge unit includes a valve bridge, a connecting rod mechanism, and a connecting rod spring. The brake piston cylinder and the exhaust piston cylinder are mounted on the valve bridge. One end of the valve bridge is connected to the exhaust valve, and the other end is connected to the brake valve. In the exhaust state, the brake cam is disconnected from the brake valve, and the exhaust cam is connected to both the exhaust valve and the brake valve. In braking mode, the brake cam is connected to the brake valve, and the exhaust cam is disconnected from both the exhaust valve and the brake valve.

4. An electromagnetic 1.5-stroke brake, characterized in that, include: The electromagnetic brake as described in claim 2 or 3.

5. An electromagnetic two-stroke brake, characterized in that: This includes an intake-side electromagnetic brake and an exhaust-side electromagnetic brake. The intake-side electromagnetic brake is the electromagnetic brake described in claim 2 or 3. The exhaust-side electromagnetic brake is the electromagnetic brake as described in claim 2 or 3.

6. An engine, characterized in that, Including the electromagnetic brake as described in claim 2 or 3.

7. A means of transportation, characterized in that, Includes the engine as described in claim 6.

8. A braking method for an electromagnetic brake, wherein the electromagnetic brake is the electromagnetic brake as described in claim 3, characterized in that, Includes the following steps: In the exhaust state, the electromagnet is not energized, the exhaust latch moves inward, locking the exhaust piston, and the exhaust piston establishes a rigid connection with the valve bridge. The exhaust cam establishes a connection with the exhaust valve and the brake valve. The corresponding connecting rod at the other end of the brake latch moves outward, the brake piston can move freely in the vertical direction, and the brake cam is disconnected from the brake valve; In braking mode, the electromagnet is energized. The soft magnet on the outside of the exhaust latch is pushed outward by the force of the electromagnet, overcoming the spring force. This causes the exhaust latch to disengage from the exhaust piston, allowing the exhaust piston to slide freely vertically relative to the valve bridge. The exhaust cam is then disconnected from the exhaust valve and the brake valve. The corresponding connecting rod moves the brake latch inward, locking the brake piston, thus establishing a rigid connection between the brake piston and the valve bridge, and establishing a connection between the brake cam and the brake valve.

Images