Remote clutch control system and fire truck

Abstract

The application discloses a remote clutch control system and a fire engine. The remote clutch control system comprises a clutch drive oil cylinder, a variable cross-section oil cylinder, a foot clutch module and an electric control clutch module. The variable cross-section oil cylinder comprises a cylinder body and a piston rod. The cylinder body is internally provided with a first oil cavity section and a second oil cavity section. The inner diameter of the second oil cavity section is smaller than that of the first oil cavity section. The piston body of the piston rod is arranged in sealing contact with the inner wall of the second oil cavity section. The first oil cavity section and the second oil cavity section are correspondingly provided with a first oil port and a second oil port. The second oil port is connected to the clutch drive oil cylinder. When the piston rod is retracted into the first oil cavity section, the first oil port and the second oil port are in communication. When the piston rod is extended into the second oil cavity section, the first oil port and the second oil port are separated. The foot clutch module is in communication with the first oil port. The electric control clutch module is drivingly connected to the piston rod. The variable cross-section oil cylinder is used for control switching. The system only needs to use one oil source, and the reliability is high.

Description

Technical Field

[0001] This invention belongs to the field of clutch control technology, specifically relating to a remote clutch control system and a fire truck. Background Technology

[0002] For fire trucks equipped with water systems, a clutch is needed to control the power drive of the fire pump. In order to improve the efficiency of firefighters' on-site firefighting operations, the fire pump needs to be remotely controlled in addition to foot clutch control.

[0003] In the existing technology, the manual clutch module and the remote clutch module are set up relatively independently, each with its own oil source to supply oil to the clutch drive cylinder. The connection and disconnection between the two modules and the clutch drive cylinder are achieved through a reversing valve. There is a risk of oil leakage between the manual clutch module and the remote clutch module. Once oil leakage occurs, neither module can work properly. Summary of the Invention

[0004] To address the aforementioned deficiencies or shortcomings, this invention provides a remote clutch control system and a fire truck, aiming to solve the technical problem in the prior art where the manual clutch module and the remote clutch module use independent oil sources and switch oil circuits through a reversing valve, which poses a risk of oil cross-contamination.

[0005] To achieve the above objectives, the present invention provides a remote clutch control system, wherein the remote clutch control system includes a clutch drive cylinder, a variable cross-section cylinder, a foot-operated clutch module, and an electronically controlled clutch module; the clutch drive cylinder is used to control the engagement and disengagement of the clutch; the variable cross-section cylinder includes a cylinder body and a piston rod, the inner cavity of the cylinder body is provided with a first oil chamber section and a second oil chamber section in sequence along the length direction, the inner diameter of the second oil chamber section is smaller than the inner diameter of the first oil chamber section, and the piston body of the piston rod can be sealed and fitted with the inner wall of the second oil chamber section, the first oil chamber section and... The second oil chamber section has a first oil port and a second oil port corresponding to each other. The second oil port is used to connect the clutch drive cylinder. The piston rod is used to connect the first oil port and the second oil port when it is retracted to the first oil chamber section, and to seal the first oil port and the second oil port when it is extended to the second oil chamber section. The foot clutch module is connected to the first oil port and is used to drive the clutch drive cylinder when the piston rod is retracted to the first oil chamber section. The electronic clutch module is driven by the piston rod and can control the piston rod to extend to the second oil chamber section to drive the clutch drive cylinder.

[0006] In an embodiment of the invention, a transition section is formed between the first oil chamber section and the second oil chamber section in the inner cavity of the cylinder body. The transition section is gradually narrowed from the first oil chamber section toward the second oil chamber section.

[0007] In an embodiment of the invention, the piston rod includes a piston body and a first connecting rod portion and a second connecting rod portion extending from both ends of the piston body. The first connecting rod portion extends out of the cylinder body from the first oil chamber section, and the second connecting rod portion extends out of the cylinder body from the second oil chamber section. The electronically controlled clutch module is drivenly connected to the first connecting rod portion.

[0008] In this embodiment of the invention, the first connecting rod portion and the second connecting rod portion have the same diameter.

[0009] In this embodiment of the invention, the remote clutch control system further includes a position sensor, which is located at one end of the second connecting rod extending out of the second oil chamber section and is used to emit a detection signal toward the cylinder block.

[0010] In this embodiment of the invention, the electronically controlled clutch module includes a power source, a reversing valve, and a telescopic cylinder connected in sequence to a piston rod. The power source is used to provide driving fluid to the telescopic cylinder, and the reversing valve is configured to be energized to conduct the power source and the telescopic cylinder when a start signal is received.

[0011] In this embodiment of the invention, the electronically controlled clutch module further includes a reset component disposed in the telescopic cylinder, which is used to drive the telescopic cylinder to reset when the reversing valve is de-energized.

[0012] In this embodiment of the invention, the reversing valve has an inlet and two outlets. The inlet is connected to a power source, and the two outlets are respectively connected to the two working chambers of the telescopic cylinder. The reversing valve is used to select one of the two outlets to be connected to the inlet.

[0013] In this embodiment of the invention, the telescopic cylinder and the variable cross-section cylinder are arranged in parallel, and the drive rod of the telescopic cylinder and the piston rod of the variable cross-section cylinder extend in the same direction. The electronically controlled clutch module also includes a connecting member that connects the drive rod and the piston rod.

[0014] To achieve the above objectives, the present invention also provides a fire truck, wherein the fire truck includes the aforementioned remote clutch control system.

[0015] Through the above technical solutions, the remote clutch control system provided by the embodiments of the present invention has the following beneficial effects:

[0016] When using the aforementioned remote clutch control system, which includes a clutch drive cylinder, a variable cross-section cylinder, a foot-operated clutch module, and an electronic clutch module, and where the variable cross-section cylinder has a first and second oil chamber section with different inner diameters arranged sequentially along its length, when the operator is in the cab, the clutch is controlled by the foot-operated clutch module. When the operator depresses the foot-operated clutch module, the hydraulic oil in the foot-operated clutch module enters the variable cross-section cylinder through the first oil port. At this time, the piston rod is in the first oil chamber section, and the first and second oil chamber sections are in a conductive state. Hydraulic oil flows sequentially through the first and second oil chambers, entering the clutch drive cylinder through the second port to control the clutch. When the operator is outside the cab, the controller sends a command to the electronic clutch module, causing it to drive the piston rod. After the piston rod enters the second oil chamber from the first, the piston body on the piston rod seals against the inner wall of the second oil chamber. As the piston rod continues to move forward, the hydraulic oil on the front side of the piston body is squeezed into the clutch drive cylinder through the second port, thus controlling the clutch. Both the foot-operated clutch module and the electronic clutch module use the same oil source, eliminating the problem of oil cross-contamination and preventing system failure due to oil cross-contamination. Furthermore, since the switching control of the clutch drive cylinder by the two modules is achieved through the structural features of the variable cross-section cylinder itself, compared to the solution using an electronic component like an electronic directional valve, it is less prone to damage, has a longer service life, and better reliability.

[0017] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0018] The accompanying drawings are provided to illustrate the invention and form part of the specification. They are used together with the following detailed description to explain the invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of a remote clutch control system according to an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of a variable cross-section hydraulic cylinder according to an embodiment of the present invention when the piston rod is in the first oil chamber section;

[0021] Figure 3 This is a schematic diagram of a variable cross-section hydraulic cylinder according to an embodiment of the present invention when the piston rod is in the second oil chamber section;

[0022] Figure 4 This is a schematic diagram of a remote clutch control system according to an embodiment of the present invention;

[0023] Figure 5This is a detailed schematic diagram of a remote clutch control system according to another embodiment of the present invention;

[0024] Figure 6 This is a detailed schematic diagram of a remote clutch control system according to another embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of a remote clutch control system according to another embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures

[0027] 1. Clutch drive cylinder; 2. Variable cross-section cylinder

[0028] 21 Cylinder Block 211 First Oil Chamber Section

[0029] 212 Transition section 213 Second oil cavity section

[0030] 214 First oil port 215 Second oil port

[0031] 22 Piston rod 221 Piston body

[0032] 222 First Linkage Section 223 Second Linkage Section

[0033] 3 Foot-operated clutch module 4 Electronic clutch module

[0034] 41 Power source 42 Reversing valve

[0035] 43 Telescopic cylinder 44 Pressure reducing valve

[0036] 45 Reset component 46 Connector component

[0037] 47 Electric telescopic cylinder 48 Motor Detailed Implementation

[0038] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0039] The remote clutch control system and fire truck of the present invention are described below with reference to the accompanying drawings.

[0040] like Figure 1 and Figure 2 As shown, the present invention provides a remote clutch control system, wherein the remote clutch control system includes:

[0041] Clutch drive cylinder 1 is used to control the engagement and disengagement of the clutch;

[0042] The variable cross-section hydraulic cylinder 2 includes a cylinder body 21 and a piston rod 22. The inner cavity of the cylinder body 21 is provided with a first oil chamber section 211 and a second oil chamber section 213 in sequence along the length direction. The inner diameter of the second oil chamber section 213 is smaller than the inner diameter of the first oil chamber section 211. The piston body 221 of the piston rod 22 can be sealed and fitted with the inner wall of the second oil chamber section 213. The first oil chamber section 211 and the second oil chamber section 213 are provided with a first oil port 214 and a second oil port 215 corresponding to each other. The second oil port 215 is used to engage the clutch to drive the hydraulic cylinder 1. The piston rod 22 is used to connect the first oil port 214 and the second oil port 215 when it is retracted to the first oil chamber section 211, and to seal the first oil port 214 and the second oil port 215 when it is extended to the second oil chamber section 213.

[0043] The foot-operated clutch module 3 is connected to the first oil port 214 and is used to drive the clutch drive cylinder 1 when the piston rod 22 is retracted to the first oil chamber section 211.

[0044] The electronically controlled clutch module 4 is drivenly connected to the piston rod 22 and can control the piston rod 22 to extend to the second oil chamber section 213 to drive the clutch drive cylinder 1.

[0045] When using the aforementioned remote clutch control system, which includes a clutch drive cylinder 1, a variable cross-section cylinder 2, a foot-operated clutch module 3, and an electronically controlled clutch module 4, and where the cylinder body 21 of the variable cross-section cylinder 2 has a first oil chamber section 211 and a second oil chamber section 213 with different inner diameters along its length, when the operator is in the cab, the clutch can be controlled by the foot-operated clutch module 3. When the operator depresses the foot-operated clutch module 3, the hydraulic oil in the foot-operated clutch module 3 enters the variable cross-section cylinder 2 through the first oil port 214. At this time, the piston rod 22 is in the first oil chamber section 211, and the first oil chamber section 211 and the second oil chamber section 213 are in a conductive state, and the hydraulic... Oil flows sequentially through the first oil chamber section 211 and the second oil chamber section 213, and enters the clutch drive cylinder 1 through the second oil port 215 to control the clutch. When the operator is outside the cab, the controller sends a command to the electronic clutch module 4, causing the electronic clutch module 4 to drive the piston rod 22 to move. After the piston rod 22 enters the second oil chamber section 213 from the first oil chamber section 211, the piston body 221 on the piston rod 22 seals against the inner wall of the second oil chamber section 213. As the piston rod 22 continues to move forward, the hydraulic oil on the front side of the piston body 221 is squeezed into the clutch drive cylinder 1 through the second oil port 215 to control the clutch. Both the foot-operated clutch module 3 and the electronic clutch module 4 use the same oil source, eliminating the problem of oil cross-contamination and preventing system failure due to oil cross-contamination. Furthermore, since the switching control of the clutch drive cylinder 1 by the two modules is achieved through the structural features of the variable cross-section cylinder 2 itself, it is less prone to damage and has a longer service life and better reliability compared to the solution that uses an electronic component such as the electronic reversing valve 42 for control.

[0046] Specifically, the foot-operated clutch module 3 includes a clutch pedal, a linkage mechanism, and a clutch master cylinder connected in sequence. When the operator depresses the clutch pedal, the linkage mechanism drives the clutch master cylinder to inject hydraulic oil into the variable cross-section cylinder 2.

[0047] like Figure 2 As shown, in this embodiment of the invention, a transition section 212 is formed between the first oil chamber section 211 and the second oil chamber section 213 in the inner cavity of the cylinder body 21. The transition section 212 is gradually tapered from the first oil chamber section 211 toward the second oil chamber section 213. The transition section 212 allows the piston body 221 to smoothly transition from the first oil chamber section 211 to the second oil chamber section 213, avoiding collisions between the piston body 221 and the wall surface of the second oil chamber section 213 facing the first oil chamber section 211 due to manufacturing tolerances.

[0048] In this embodiment of the invention, the piston rod 22 includes a piston body 221 and a first connecting rod portion 222 and a second connecting rod portion 223 extending from both ends of the piston body 221. The first connecting rod portion 222 extends out of the cylinder body 21 from the first oil chamber section 211, and the second connecting rod portion 223 extends out of the cylinder body 21 from the second oil chamber section 213. The electronically controlled clutch module 4 is drivenly connected to the first connecting rod portion 222. For a normally functioning remote clutch control system, the length of the second connecting rod portion 223 extending out of the cylinder body 21 is a fixed value. The operator can then determine if there is a system malfunction by observing the position of the extended second connecting rod portion 223 and perform timely repairs. Specifically, a pull ring, pull rod, or other structure can be provided at the end of the second connecting rod portion 223 away from the piston body 221. When a system malfunction occurs, the operator can use the pull ring or pull rod to perform an emergency drive on the piston rod 22 to force emergency operation of the clutch.

[0049] In this embodiment of the invention, the first connecting rod portion 222 and the second connecting rod portion 223 have the same diameter. Therefore, when the piston rod 22 moves, the hydraulic oil changes on both sides of the piston body 221 in the same way, meaning the flow rates of the hydraulic oil at the first oil port 214 and the second oil port 215 are the same, resulting in a relatively stable hydraulic oil state within the system.

[0050] In this embodiment of the invention, the remote clutch control system further includes a position sensor. The position sensor is located at one end of the second connecting rod 223 extending out of the second oil chamber section 213 and is used to emit a detection signal toward the cylinder block 21. The position sensor can detect the working stroke of the second connecting rod 223 and transmit the detection data to a corresponding data processing device. The data processing device analyzes the stroke data of the second connecting rod 223. If the actual stroke deviates from the specified stroke, the data processing device can issue a warning to the operator to remind the operator to perform timely maintenance on the remote clutch control system.

[0051] like Figure 4 As shown, in this embodiment of the invention, the electronically controlled clutch module 4 includes a power source 41, a reversing valve 42, and a telescopic cylinder 43 connected in sequence to the piston rod 22. The power source 41 provides driving fluid to the telescopic cylinder 43. The reversing valve 42 is configured to be energized and conduct the power source 41 and the telescopic cylinder 43 upon receiving a start signal. Therefore, the remote clutch logic relies solely on the energization and de-energization of the reversing valve 42, resulting in simple control without complex control timing requirements.

[0052] Specifically, a pressure reducing valve 44 is also provided between the power source 41 and the reversing valve 42 to prevent damage to the telescopic cylinder 43 due to excessive pressure.

[0053] Of course, the present invention is not limited thereto; see also... Figure 6The electronic clutch module 4 can also be configured as an electric telescopic cylinder 47, which directly drives the piston rod 22, thus occupying less chassis space; see [link / reference] Figure 7 The electronic clutch module 4 can also be configured as a motor 48. A gear is provided on the output shaft of the motor 48, and a rack structure that cooperates with the gear is formed on the first connecting rod 222. The piston rod 22 is moved by the motor 48 through the gear and rack transmission.

[0054] It should be noted that the driving fluid output by the power source 41 can be either gas or liquid. In a specific embodiment of the present invention, the power source 41 is preferably a gas source and the driving fluid is air.

[0055] In this embodiment of the invention, the electronically controlled clutch module 4 further includes a reset member 45 disposed within the telescopic cylinder 43. The reset member 45 is used to drive the telescopic cylinder 43 to reset when the reversing valve 42 is de-energized, thereby causing the piston rod 22 to retract from the second oil chamber section 213 to the first oil chamber section 211, so that the first oil port 214 and the second oil port 215 are reconnected, and the system can be controlled again by the foot-operated clutch module 3. Specifically, the reset member 45 can be a coil spring or an air compression spring.

[0056] like Figure 5 As shown, in this embodiment of the invention, the reversing valve 42 has an inlet and two outlets. The inlet is connected to the power source 41, and the two outlets are respectively connected to the two working chambers of the telescopic cylinder 43. The reversing valve 42 is used to select one of the two outlets to connect with the inlet. This solution is a parallel technical solution to the aforementioned reset component 45, eliminating the reset component 45 and instead using the reversing valve 42 to change the direction of the driving fluid entering and exiting the telescopic cylinder 43 to drive the telescopic cylinder 43 to reset. Compared with the reset component 45, the advantage is that the reset is faster and the reset effect of the telescopic cylinder 43 can be avoided due to the failure of the reset component 45.

[0057] In this embodiment of the invention, the telescopic cylinder 43 and the variable cross-section cylinder 2 are arranged in parallel, and the drive rod of the telescopic cylinder 43 and the piston rod 22 of the variable cross-section cylinder 2 extend in the same direction. The electronically controlled clutch module 4 also includes a connector 46 connecting the drive rod and the piston rod 22. Thus, the variable cross-section cylinder 2 and the telescopic cylinder 43 are located on the same side and can be arranged back-to-back on the chassis of the vehicle, making reasonable use of the chassis space and preventing the variable cross-section cylinder 2 or the telescopic cylinder 43 from extending laterally beyond the chassis.

[0058] Specifically, in a specific embodiment of the present invention, the remote clutch operation process is as follows:

[0059] When the system receives a start signal, the reversing valve 42 is energized, and the air source is depressurized through the pressure reducing valve 44, which pushes the drive rod of the telescopic cylinder 43 to move to the right. This causes the piston rod 22 of the variable cross-section cylinder 2 to also move to the right. After the piston body 221 enters the second oil chamber section 213, it contacts the inner wall of the cylinder body 21, thereby sealing the oil chamber on the right side of the piston body 221. Under the continued push of the drive rod, the hydraulic oil is driven into the clutch drive cylinder 1.

[0060] When the system receives a shutdown signal, the reversing valve 42 is de-energized, the telescopic cylinder 43 is depressurized, the drive rod of the telescopic cylinder 43 moves to the left under the action of the spring, and the piston rod 22 moves to the left along with it. The hydraulic oil in the clutch drive cylinder 1 is drawn back. Under the continued push of the spring, the piston rod 22 retracts into the first oil chamber section 211, and the oil passage between the first oil port 214 and the second oil port 215 is reconnected.

[0061] To achieve the above objectives, the present invention also provides a fire truck, wherein the fire truck includes the above-mentioned remote clutch control system. Since the fire truck adopts all the technical solutions of the above-mentioned remote clutch control system, it also has the same beneficial effects, which will not be described in detail here.

[0062] In the description of this invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A remote clutch control system, characterized in that, The remote clutch control system includes: Clutch drive cylinder (1) is used to control the engagement and disengagement of the clutch; A variable cross-section hydraulic cylinder (2) includes a cylinder body (21) and a piston rod (22). The inner cavity of the cylinder body (21) is provided with a first oil chamber section (211) and a second oil chamber section (213) in sequence along the length direction. The inner diameter of the second oil chamber section (213) is smaller than the inner diameter of the first oil chamber section (211). The piston body (221) of the piston rod (22) can be sealed and fitted with the inner wall of the second oil chamber section (213). The first oil chamber section (211) and the second oil chamber section... (213) A first oil port (214) and a second oil port (215) are provided in a one-to-one correspondence. The second oil port (215) is used to connect the clutch drive cylinder (1). The piston rod (22) is used to connect the first oil port (214) and the second oil port (215) when it is retracted to the first oil chamber section (211), and to block the first oil port (214) and the second oil port (215) when it is extended to the second oil chamber section (213). The foot-operated clutch module (3) is connected to the first oil port (214) and is used to drive the clutch drive cylinder (1) when the piston rod (22) is retracted to the first oil chamber section (211); The electronically controlled clutch module (4) is drivenly connected to the piston rod (22) and can control the piston rod (22) to extend to the second oil chamber section (213) to drive the clutch drive cylinder (1).

2. The remote clutch control system according to claim 1, characterized in that, The inner cavity of the cylinder (21) also forms a transition section (212) between the first oil cavity section (211) and the second oil cavity section (213), and the transition section (212) is gradually narrowed from the first oil cavity section (211) toward the second oil cavity section (213).

3. The remote clutch control system according to claim 1, characterized in that, The piston rod (22) includes a piston body (221) and a first connecting rod portion (222) and a second connecting rod portion (223) extending from both ends of the piston body (221). The first connecting rod portion (222) extends out of the cylinder body (21) from the first oil chamber section (211), and the second connecting rod portion (223) extends out of the cylinder body (21) from the second oil chamber section (213). The electronically controlled clutch module (4) is drivenly connected to the first connecting rod portion (222).

4. The remote clutch control system according to claim 3, characterized in that, The first connecting rod portion (222) and the second connecting rod portion (223) have the same diameter.

5. The remote clutch control system according to claim 3, characterized in that, The remote clutch control system also includes a position sensor, which is located at one end of the second connecting rod (223) extending out of the second oil chamber section (213) and is used to transmit a detection signal toward the cylinder (21).

6. The remote clutch control system according to any one of claims 1 to 5, characterized in that, The electronically controlled clutch module (4) includes a power source (41), a reversing valve (42), and a telescopic cylinder (43) connected in sequence to the piston rod (22). The power source (41) is used to provide driving fluid to the telescopic cylinder (43). The reversing valve (42) is configured to be energized to conduct the power source (41) and the telescopic cylinder (43) when a start signal is received.

7. The remote clutch control system according to claim 6, characterized in that, The electronically controlled clutch module (4) also includes a reset component (45) disposed in the telescopic cylinder (43), the reset component (45) being used to drive the telescopic cylinder (43) to reset when the reversing valve (42) is de-energized.

8. The remote clutch control system according to claim 6, characterized in that, The reversing valve (42) has an inlet and two outlets. The inlet is connected to the power source (41), and the two outlets are respectively connected to the two working chambers of the telescopic cylinder (43). The reversing valve (42) is used to select one of the two outlets to connect to the inlet.

9. The remote clutch control system according to claim 6, characterized in that, The telescopic cylinder (43) and the variable cross-section cylinder (2) are arranged in parallel, and the drive rod of the telescopic cylinder (43) and the piston rod (22) of the variable cross-section cylinder (2) extend in the same direction. The electronically controlled clutch module (4) also includes a connector (46) that connects the drive rod and the piston rod (22).

10. A fire truck, characterized in that, The fire truck includes a remote clutch control system according to any one of claims 1 to 9.

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