Throttle valve mechanism of V-shaped engine

Abstract

The invention discloses a throttle valve mechanism of a V-shaped engine, and relates to the technical field of motorcycle engines, the throttle valve mechanism comprises a first intake valve and a second intake valve, throttle valve sheets are rotatably arranged in ports of the first intake valve and the second intake valve, and the throttle valve sheets are used for controlling the opening degree of the first intake valve and the second intake valve; the first air inlet manifold and the second air inlet manifold communicate the first air inlet valve and the second air inlet valve with all the air cylinders, the ends, connected with the air cylinders, of the first air inlet manifold and the second air inlet manifold are bent in the direction away from each other, and inner cavities of the first air inlet manifold and the second air inlet manifold communicate with the idle speed control valve and the oil tank through a breather pipe and an oil rail pipe set correspondingly; the technical problems that an existing single-valve throttle valve cannot stably supply air to two air cylinders, so that the output efficiency of an engine is affected, and a double-valve throttle valve is large in transverse size and prone to interference with an engine cylinder head, so that the double-valve throttle valve is difficult to install are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the motorcycle engine technical field, and particularly relates to a throttle mechanism of a V-type engine. BACKGROUND

[0002] The V-type double-cylinder engine of the motorcycle engine is used for reducing the longitudinal size of the engine to make the engine look more compact, and the included angle between the cylinder centers of the front and rear cylinders is designed to be as small as possible, and the angle is generally about 60 degrees. Meanwhile, the shape of the cylinder head is designed to be as wide as possible to make the engine look more full, and therefore the gap between the front and rear cylinders is further reduced. At this time, the structure arrangement of the throttle body becomes a big difficulty. The throttle body of the existing V-type double-cylinder engine generally has two structures. One is a single-valve throttle body, and the two cylinders are respectively connected to the two cylinders through the intake manifold. This structure will interfere with the intake of the two cylinders due to the shared intake passage, which will cause the insufficient air volume of the rear cylinder, the misfire, the unstable speed, the shaking during low-speed riding, the unqualified emission and other problems, but the structure is simple and small in size, and is easy to arrange. The other is a double-valve throttle body, and the two cylinders are respectively connected to the two cylinders through two independent passages. The two valve passages of the valve body are generally horizontally arranged at the same height, and are arranged in front and behind. The horizontally arranged double-valve throttle body is large in transverse size, and will interfere with the cylinder head of the V-type engine, which will cause the arrangement difficulty or the impossibility of arrangement.

[0003] In summary, how to provide a throttle mechanism which greatly reduces the transverse size of the throttle body, saves the arrangement space and ensures the stable output power of the engine cylinder is a problem to be solved by the person skilled in the art. SUMMARY

[0004] The purpose of the present application is to provide a throttle mechanism of a V-type engine, which solves the technical problems that the current single-valve throttle cannot stably supply air to the two cylinders, which affects the output efficiency of the engine, and the double-valve throttle is large in transverse size, which is easy to interfere with the cylinder head of the engine, and causes the difficulty in installation of the throttle.

[0005] To achieve the above purpose, the present application provides a throttle mechanism of a V-type engine, which comprises:

[0006] The first intake valve and the second intake valve are arranged in sequence along the vertical direction, and the throttle valve is rotatably arranged in the port of the first intake valve and the second intake valve.

[0007] A first intake manifold and a second intake manifold, both of which communicate the first intake valve and the second intake valve with the cylinders, the first intake manifold and the second intake manifold are bent in a direction away from each other at one end for connecting the cylinders, the inner cavities of the first intake manifold and the second intake manifold are communicated with the idle control valve and the oil tank through the air pipe and the oil rail pipe group, and the oil rail pipe group is further provided with an oil injector between the first intake manifold and the second intake manifold.

[0008] Preferably, the side of the first intake valve away from the second intake valve is provided with a pull wire disc, the pull wire disc is used to receive a throttle opening signal and control the opening size of the first intake valve and the second intake valve.

[0009] Preferably, the pull wire disc is provided with a driving rod along the axial direction thereof, the extending direction of the driving rod is the side close to the second intake valve, the driving rod penetrates the first intake valve and the second intake valve in sequence and is connected with the throttle valve plate, and the driving rod is used to drive the rotation of the throttle valve plate.

[0010] Preferably, the side of the second intake valve away from the first intake valve is provided with a throttle position sensor, the throttle position sensor is used to detect the opening size of the throttle valve.

[0011] Preferably, the side wall of the second intake valve is provided with a sensor mounting seat, the sensor mounting seat is used to set the throttle position sensor, the driving rod extends into the sensor mounting seat and corresponds to the throttle position sensor, a sealing ring is arranged at the port of the sensor mounting seat communicated with the second intake valve, and the sealing ring is attached to the side wall of the driving rod.

[0012] Preferably, the side wall of the first intake valve is provided with a mounting seat, the pull wire disc is rotatable on the mounting seat, a return spring is arranged between the mounting seat and the pull wire disc, and the two ends of the return spring are connected with the side wall of the first intake valve and the pull wire disc respectively.

[0013] Preferably, the outer periphery of the two ends of the driving rod is provided with a sliding bearing, the sliding bearing is used to assist the rotation of the driving rod.

[0014] Preferably, the side wall of the first intake manifold is provided with an intake temperature sensor and a pressure sensor, the intake temperature sensor and the pressure sensor are used to detect the air pressure and temperature in the cylinders.

[0015] Preferably, the idle control valve is carried on a control valve seat, and the control valve seat is communicated with each air pipe and an air filter.

[0016] An engine comprising the throttle mechanism of the V-type engine described above.

[0017] With respect to the above background art, the throttle mechanism of the V-type engine provided by the present application comprises: a first intake valve and a second intake valve connected with each other by a side wall, the two are arranged in sequence along a vertical direction with their axes parallel to each other, a throttle valve is rotatably arranged in the inner cavity of the first intake valve and the second intake valve, the rotation axis of the throttle valve is a diameter of itself along the vertical direction, the opening size of the first intake valve and the second intake valve is controlled by adjusting the rotation angle of the throttle valve, one side port of the first intake valve and the second intake valve is respectively communicated with a first intake manifold and a second intake manifold, the other end of the first intake manifold and the second intake manifold is arranged at a certain angle with the first intake valve and the second intake valve, so that the throttle mechanism can be adapted to the cylinder arranged at an angle with the V-type engine, an air pipe and an oil injector are arranged on the side wall of the first intake manifold and the second intake manifold, the air pipe is communicated with an idle control valve, the idle control valve is used to adjust the intake amount under the idle working condition of the engine, so as to ensure that the engine can operate stably, the oil injector is communicated with an oil rail group to deliver air to the oil rail group, the oil rail group generates combustible mixture from fuel and air, so that the engine can perform subsequent power stroke.

[0018] The first intake valve and the second intake valve are arranged in the vertical direction in the present application, which reduces the size of the throttle mechanism in the horizontal direction, the first intake valve and the second intake valve are respectively communicated with cylinders and independently supply air to the corresponding cylinders, which realizes the technical effect of reducing the horizontal size of the throttle mechanism, facilitates the installation of the throttle mechanism, makes the engine structure compact, and ensures the stable output power of the independent operation of each cylinder of the engine. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the provided drawings.

[0020] Figure 1 The front view of the throttle mechanism of the V-type engine provided by the embodiment of the present application;

[0021] Figure 2 The top view of the throttle mechanism of the V-type engine provided by the embodiment of the present application;

[0022] Figure 3 The side view of the throttle mechanism of the V-type engine provided by the embodiment of the present application;

[0023] Figure 4 The first cross-sectional view of the throttle mechanism of the V-type engine provided by the embodiment of the present application;

[0024] Figure 5The second sectional view of the throttle mechanism of the V-type engine provided by the embodiment of the present application.

[0025] Wherein, 1-first intake valve; 2-second intake valve; 3-throttle blade; 4-first intake manifold; 5-second intake manifold; 6-injector; 7-oil rail tube group; 8-lay wire disc; 9-sensor mounting seat; 10-mounting seat; 11-driving rod; 12-return spring; 13-idle speed adjusting bolt; 14-sliding bearing; 15-idle speed control valve; 16-control valve seat; 17-vent pipe. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present application.

[0027] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0028] The present application provides a throttle mechanism of a V-type engine, please refer to the sectional view of the throttle mechanism of the V-type engine provided by the embodiment of the present application Figures 1 to 5The application comprises a first intake valve 1 and a second intake valve 2, which are arranged in parallel and have side walls connected to each other, preferably, the first intake valve 1 and the second intake valve 2 are arranged in the vertical direction, and the first intake valve 1 is located above the second intake valve 2. The inner cavities of the first intake valve 1 and the second intake valve 2 are rotatably provided with throttle plates 3, and the rotation axis of the throttle plates 3 is the diameter of the throttle plates 3 in the vertical direction. When each throttle plate 3 is flush with the port of the first intake valve 1, the edge of each throttle plate 3 is attached to the inner wall of the first intake valve 1 and the second intake valve 2. At this time, each throttle plate 3 closes the throttle. Rotating each throttle plate 3 adjusts the throttle opening by adjusting the rotation angle of the throttle plate 3. The first intake manifold 4 and the second intake manifold 5 are respectively communicated at the same side port of the first intake valve 1 and the second intake valve 2. The end of the first intake manifold 4 and the second intake manifold 5 away from the first intake valve 1 and the second intake valve 2 is bent in the direction away from each other. The direction of the side port of the first intake manifold 4 and the second intake manifold 5 has a certain included angle, which is about 60°. This makes the throttle mechanism be able to be arranged at an included angle with the cylinder of the V-type engine. The air pipe 17 and the oil rail pipe group 7 are arranged on the side wall of the first intake manifold 4 and the second intake manifold 5. The air pipe 17 is communicated with the idle control valve 15. The idle control valve 15 is used to adjust the intake amount under the idle condition of the engine to ensure that the engine can operate stably. The oil rail pipe group 7 is communicated with the oil tank. In addition, the oil rail pipe group 7 is also provided between the first intake manifold 4 and the second intake manifold 5. The fuel injector 6 receives the fuel and air to form atomized fuel vapor, which is used for subsequent power stroke.

[0029] It should be noted that the unoptimized throttle structure horizontally arranges two intake valves. The throttle mechanism provided by the application arranges the first intake valve 1 and the second intake valve 2 in the vertical direction. Compared with the unoptimized throttle, the first intake valve 1 and the second intake valve 2 of the application are stacked with each other, the overall width of the intake valve is reduced by half, the width of the throttle structure is greatly reduced, and the interference between the throttle structure and the cylinder head is avoided. In addition, the application provides the first intake valve 1 and the second intake valve 2 for separately supplying air to the front-end cylinder and the rear-end cylinder of the engine. The air supply systems of the front-end cylinder and the rear-end cylinder are independent of each other, which avoids the interference between the front-end cylinder and the rear-end cylinder due to sharing an air inlet, causes insufficient air volume of the rear cylinder, and causes misfire, unstable speed, shaking during low-speed riding, unqualified emission, and other problems.

[0030] Preferably, a pull wire disc 8 is arranged on the side wall of the first intake valve 1 away from the second intake valve 2, an end face of the pull wire disc 8 is vertically extended with a driving rod 11, the axis of the driving rod 11 coincides with the rotation axis of the pull wire disc 8, the extension direction of the driving rod 11 is the side of the first intake valve 1 pointing to the second intake valve 2, the driving rod 11 penetrates the first intake valve 1 and the second intake valve 2 in sequence, the driving rod 11 is fixedly connected with the throttle valve 3 in the first intake valve 1 and the second intake valve 2, preferably, the driving rod 11 passes the center of each throttle valve 3, the pull wire disc 8 drives each throttle valve 3 to rotate through the driving rod 11, it is to be noted that the side wall of the pull wire disc 8 is provided with a winding groove, a certain length of pull wire is wound in the winding groove, the two ends of the pull wire are connected with the bottom face of the winding groove and the accelerator handle of the vehicle respectively, when the operator twists the accelerator handle, the accelerator handle drives the pull wire disc 8 to rotate through the pull wire, the throttle valve 3 arranged on the driving rod 11 rotates a certain angle, the throttle valve opens a corresponding opening degree, preferably, the driving rod 11 is fixedly connected with each throttle valve 3 through a screw.

[0031] Please refer to the drawings in the description Figure 3 With 4 A mounting seat 10 is arranged on the side wall of the first intake valve 1 away from the second intake valve 2, the pull wire disc 8 is borne on the end port of the mounting seat 10, preferably, the lower end face of the pull wire disc 8 is connected with a support rod on the side wall of the first intake valve 1, the pull wire disc 8 is connected with the support rod through a rolling bearing, so that the pull wire disc 8 can rotate in the axial direction, a reset spring 12 is arranged between the support rod and the inner wall of the mounting seat 10, the two ends of the reset spring 12 are connected with the side wall of the first intake valve 1 and the lower end face of the pull wire disc 8 respectively, when the operator twists the accelerator handle, the pull wire drives the pull wire disc 8 to rotate, the pull wire disc 8 twists the reset spring 12, when the operator releases the accelerator handle, the accelerator handle cannot exert the pulling force on the pull wire, the elastic force generated by the deformation of the reset spring 12 drives the pull wire disc 8 to reset, the driving rod 11 connected with the pull wire disc 8 drives the throttle valve 3 to reset, and the closure of the throttle valve is completed.

[0032] In addition, an idling speed adjusting screw 13 is further arranged on the mounting seat 10, when the engine is in the idling state, the throttle valve needs to keep a very small opening degree, so as to ensure that the engine has enough air intake to maintain operation, by adjusting the idling speed adjusting screw 13, the minimum opening degree of the throttle valve 3 under the action of the reset spring 12 is changed, so as to accurately control the air intake of the engine in the idling state, and the stability of the rotating speed in the idling state is realized.

[0033] Preferably, a sensor mounting seat 9 is arranged on the side wall of the second intake valve 2 away from the first intake valve 1, a throttle position sensor is arranged in the sensor mounting seat 9, in addition, the drive rod 11 continues to extend for an end length after penetrating the second intake valve 2, so that the extended end of the drive rod 11 is located in the sensor mounting seat 9, the throttle position sensor corresponds to the end side wall of the drive rod 11, the throttle position sensor judges the opening degree of the throttle valve by detecting the rotation angle of the drive rod 11, preferably, a sliding bearing 14 is arranged in the sensor mounting seat 9 and the mounting seat 10, both ends of the drive rod 11 are sleeved on the inner side of each sliding bearing 14, the inner ring of each sliding bearing 14 is in interference fit with the drive rod 11, so as to assist the rotation of the drive rod 11, in addition, since the outer diameter of the sliding bearing 14 is larger than the diameter of the drive rod 11, the through hole formed by the drive rod 11 and the groove of the sliding bearing 14 form an annular stepped surface, the end of the sliding bearing 14 abuts against the annular stepped surface, which limits the axial freedom degree of the drive rod 11 and ensures the stability of the drive rod 11. In addition, each sliding bearing 14 is provided with an oil seal structure, and the sliding bearing 14 with the structure provides high sealing performance for the ports of the sensor mounting seat 9 and the mounting seat 10, preventing oil and water in the channel from seeping into the throttle position sensor due to gravity.

[0034] Please refer to the drawings in the description Figure 4 The side wall of the first intake manifold 4 is provided with an intake temperature sensor and a pressure sensor, which are used to detect the air pressure and temperature in the cylinder. Compared with the unimproved throttle valve assembly, the sensors are integrally arranged, which occupies a large space in the first intake manifold 4, thereby blocking the air or atomized fuel vapor from entering the cylinder. The intake temperature sensor, the pressure sensor and the throttle position sensor are independent in the application, which avoids mutual interference of the sensors and prevents the blocking from occurring.

[0035] Please continue to refer to the drawings in the description Figure 2 The idle control valve 15 is carried on the control valve seat 16, the control valve seat 16 is communicated with the air pipes 17, and the end of the control valve seat 16 for inhaling air is also communicated with an air filter. The air filter filters the inhaled air to prevent foreign matters from entering the engine. When the engine is in an idle state and needs a certain amount of intake air, the idle control valve 15 provides air for the engine cylinder through the bypass intake passage. The idle control valve 15 is signal connected with the engine control unit to realize stable operation of the engine in the idle state.

[0036] The application also provides a motorcycle having the throttle valve mechanism of the V-type engine described above, and the remaining parts of the motorcycle are the existing public technology, which will not be described in detail herein.

[0037] It should be noted that the relative terms, such as first and second, are used merely to differentiate one entity from another entity, and do not require or imply that any such actual relationship or order exists between the entities.

[0038] The principles and implementations of the present application are described in the specific examples herein, and the above examples are only used to help understand the method of the present application and its core idea. It should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, the present application can be improved and modified, and these improvements and modifications also fall within the protection scope of the present application.

Claims

1. A throttle valve mechanism for a V-type engine, characterized in that, include: The first intake valve (1) and the second intake valve (2) are arranged in a vertical direction along the axis of the first intake valve (1) and the axis of the second intake valve (2). A throttle plate (3) is rotatably provided in the port of the first intake valve (1) and the second intake valve (2). The throttle plate (3) is used to control the opening degree of the first intake valve (1) and the second intake valve (2). The first intake manifold (4) and the second intake manifold (5) connect the first intake valve (1), the second intake valve (2) and each cylinder. The first intake manifold (4) and the second intake manifold (5) are bent in opposite directions at one end to each other. The inner cavities of the first intake manifold (4) and the second intake manifold (5) are connected to the idle speed control valve (15) and the fuel tank through the vent pipe (17) and the fuel rail assembly (7), respectively. A fuel injector (6) is also provided between the fuel rail assembly (7) and the first intake manifold (4) and the second intake manifold (5).

2. The throttle valve mechanism of the V-type engine according to claim 1, characterized in that, The first intake valve (1) is provided with a cable tray (8) on the side opposite to the second intake valve (2). The cable tray (8) is used to receive the throttle opening signal and control the opening size of the first intake valve (1) and the second intake valve (2).

3. The throttle valve mechanism of the V-type engine according to claim 2, characterized in that, The cable reel (8) is provided with a drive rod (11) along its axial direction. The extension direction of the drive rod (11) is close to the side of the second intake valve (2). The drive rod (11) passes through the first intake valve (1) and the second intake valve (2) in sequence and is connected to each of the throttle valve plates (3). The drive rod (11) is used to drive the throttle valve plates (3) to rotate.

4. The throttle valve mechanism of the V-type engine according to claim 3, characterized in that, The second intake valve (2) is provided with a throttle position sensor on the side opposite to the first intake valve (1), and the throttle position sensor is used to detect the throttle opening size.

5. The throttle valve mechanism of the V-type engine according to claim 4, characterized in that, A sensor mounting base (9) is provided on the side wall of the second intake valve (2). The sensor mounting base (9) is used to set the throttle position sensor. The drive rod (11) extends into the sensor mounting base (9) and corresponds to the throttle position sensor. A sealing ring is provided at the port where the sensor mounting base (9) communicates with the second intake valve (2). The sealing ring is in contact with the side wall of the drive rod (11).

6. The throttle valve mechanism of the V-type engine according to claim 2, characterized in that, A mounting base (10) is provided on the side wall of the first intake valve (1). The cable reel (8) is rotatably mounted on the mounting base (10). A return spring (12) is provided between the mounting base (10) and the cable reel (8). The two ends of the return spring are respectively connected to the side wall of the first intake valve (1) and the cable reel (8).

7. The throttle valve mechanism of the V-type engine according to claim 5, characterized in that, The drive rod (11) is provided with sliding bearings (14) on the outer periphery of both ends, and the sliding bearings (14) are used to assist the drive rod (11) in rotating.

8. The throttle valve mechanism of the V-type engine according to claim 1, characterized in that, An intake temperature sensor and a pressure sensor are provided on the side wall of the first intake manifold (4). The intake temperature sensor and the pressure sensor are used to detect the air pressure and temperature in the cylinder.

9. The throttle valve mechanism of the V-type engine according to claim 1, characterized in that, The idle speed control valve (15) is mounted on the control valve seat (16), which is connected to each of the vent pipes (17) and the air filter.

10. An engine, characterized in that, Including the throttle mechanism of a V-type engine as described in any one of claims 1-9.

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