TW202306804A - Series-hybrid type straddled vehicle - Google Patents

Abstract

Provided is a series-hybrid type straddled vehicle that makes it possible to efficiently suppress or prevent transmission of the vibration of an engine for electric power generation to a frame while suppressing or preventing an increase in size and complication of the structure. The series-hybrid type straddled vehicle according to the present invention comprises: an engine drive power supply unit which has a biaxial primary balancer for suppressing vibration due to a primary inertia force and a primary inertia couple, an engine for electric power generation, and a generator and which is capable of outputting electric power generated by the generator; and a support mechanism mounted to a vehicle body frame so as to support the engine drive power supply unit in such a manner that suppresses rotational vibration about a crankshaft while allowing cylinder-direction translational vibration due to a residual secondary inertia force. The cylinder-direction translational vibration due to the residual secondary inertia force is translational vibration generated in the cylinder axis direction of the engine for electric power generation as viewed from the crankshaft axis direction by a secondary inertia force remaining in the engine for electric power generation caused by the primary inertia force and the primary inertia couple suppressed by the biaxial primary balancer. The rotational vibration about the crankshaft is rotational vibration about a line parallel to the crankshaft axis.

Description

Series hybrid straddle vehicle

The invention relates to a serial hybrid straddle vehicle.

There is an engine-driven power supply unit that outputs electric power by driving a generator with an engine for power generation (for example, Patent Document 1). The engine drive power supply unit described in Patent Document 1 is mounted on a power supply unit of a range extender EV (Range Extender Electric Vehicle). A balancer is installed in the engine for power generation. The engine drive power supply unit is suspended by the link mechanism. Thereby, transmission of the vibration of the engine drive power supply unit to the frame of the vehicle is suppressed. prior art literature patent documents

Patent Document 1: Specification of International Publication No. 2012/069201

[Problem to be solved by the invention]

Driving the engine for power generation generates various vibrations in the engine for power generation. An engine drive power supply unit including such an engine for generating electricity is mounted on a series hybrid straddle type vehicle. The above-mentioned range-extended EV is an example of a series hybrid straddle-type vehicle. For a series hybrid straddle type vehicle, vibration suppression tends to be strongly required. Furthermore, the series hybrid straddle-type vehicle has the vehicle characteristic that the rider's body weight is shifted to perform posture control, and is used in a wide range of applications, such as daily transportation or entertainment such as touring. Therefore, lightness and simplicity are strongly required for the series hybrid straddle-type vehicle. Therefore, in a series hybrid straddle-type vehicle, it is preferable to suppress or prevent the increase in size and complexity of the structure, and to efficiently suppress or prevent the transmission of the vibration of the power generation engine to the frame. An object of the present invention is to provide a series hybrid straddle vehicle capable of suppressing or preventing an increase in size and a complicated structure, and efficiently suppressing or preventing vibration of a generator engine from being transmitted to a frame. [Technical means to solve the problem]

The inventors of the present invention studied to efficiently reduce the vibration generated in an engine for power generation of an engine-driven power supply unit. In the engine drive power supply unit described in Patent Document 1, a balancer is provided in an engine for power generation to reduce vibration of the engine for power generation. In addition, the engine drive power supply unit is suspended from the frame by the link mechanism, thereby suppressing transmission of vibration generated in the engine for power generation to the frame of the vehicle. Here, the balancer of the power generation engine described in Patent Document 1 is a uniaxial primary balancer. In this case, the vibration caused by the primary inertial force described in Patent Document 1 is suppressed by the uniaxial primary balancer, and the link mechanism suppresses the vibration of the primary inertial force couple and the like from being transmitted to the frame. However, regarding the vibration generated in the engine for power generation, in addition to the vibration caused by the primary inertial force and the primary inertial force couple, the vibration is also generated by the secondary inertial force. Therefore, the engine drive power supply unit described in Patent Document 1 may vibrate due to the secondary inertial force, so that the vibration of the engine for power generation may become complicated, and sometimes it is only supported by a simple engine drive power supply unit The mechanism cannot completely dampen the transmission of vibrations to the frame.

The inventors of the present invention have also studied how to efficiently suppress the vibration generated in the engine from being transmitted to the frame, taking into account the vibration caused by the secondary inertial force generated in the engine for power generation. In this research, the present inventors suppressed the vibration caused by the primary inertial force and the primary inertial couple by using a balancer, and obtained the following insight: By using the supporting mechanism to suppress the vibration caused by the remaining secondary inertial force from being transmitted to the frame, It can suppress or prevent the increase in size and the complexity of the structure, and it can also suppress the vibration caused by the secondary inertial force. Specifically, a two-axis primary balancer that suppresses vibrations caused by primary inertial forces and primary inertial couples is installed on the power generation engine of the engine drive power supply unit of the straddle-type vehicle. In addition, in order to allow the translational vibration of the cylinder direction caused by the residual secondary inertial force and suppress the rotational vibration around the crankshaft, the support mechanism for suspending the engine drive power supply unit is installed on the vehicle in a manner that supports the engine drive power supply unit. body frame. Thereby, the primary inertial force and the primary inertial couple generated in the power generation engine are suppressed by the balancer provided in the power generation engine. At this time, since the vibration caused by the secondary inertial force remains in the power generating engine, the vibration caused by the remaining secondary inertial force can be suppressed from being transmitted to the frame through the supporting mechanism. In this way, the vibration generated by the power generation engine of the engine-driven power supply unit can be reduced, and the supporting mechanism can also be specially used to suppress the vibration caused by the residual secondary inertial force. Thereby, in the series hybrid straddle type vehicle, the increase in size and the complexity of the structure can be suppressed or prevented, and the vibration generated in the power generation engine can be efficiently suppressed from being transmitted to the frame.

In order to achieve the above object, according to an aspect of the present invention, a series hybrid straddle type vehicle has the following configuration. (1) A series hybrid straddle-type vehicle, which has: body frame; drive motor; a drive wheel, which is rotatably supported on the vehicle body frame and driven by the drive motor; An engine-driven power supply unit comprising: an engine for power generation, which has one or a plurality of cylinders, and a two-axis primary balancer for suppressing vibration caused by primary inertial forces and primary inertial couples; and a generator, which is installed on the above-mentioned power generation The engine is driven by the rotation of the crankshaft of the above-mentioned power-generating engine to generate electricity, and the electric power generated is supplied to the above-mentioned driving motor through the power storage device or not through the power storage device; and it is configured to be output by the above-mentioned generator and does not transmit the power output by the above-mentioned engine for power generation to the above-mentioned drive wheels; and The supporting mechanism is installed on the above-mentioned vehicle body frame to support the above-mentioned engine drive power supply unit in a manner that allows the translational vibration in the direction of the cylinder caused by the residual secondary inertial force and suppresses the rotational vibration around the crankshaft. The translational vibration in the cylinder direction caused by the inertial force is the translational vibration in the direction of the cylinder axis of the above-mentioned engine for power generation when viewed along the axis of the crankshaft due to the secondary inertial force. The balancer suppresses the primary inertial force and the inertial force that the primary inertial force occasionally remains in the above-mentioned engine for power generation. The above-mentioned rotational vibration around the crankshaft is rotational vibration centered on a line parallel to the crankshaft axis.

The series hybrid straddle vehicle of (1) includes a vehicle body frame, an engine drive power supply unit, and a supporting mechanism. The engine drive power supply unit has an engine for power generation and a generator. The engine for power generation has one or a plurality of cylinders and a biaxial primary balancer. The double-axis primary balancer suppresses the vibration caused by the primary inertial force and the primary inertial couple. The generator is mounted on the engine for power generation. The generator is driven by the rotation of the crankshaft of the power generating engine to generate electricity, and supplies the generated electric power to the above-mentioned drive motor through or without the electricity storage device. The engine drive power supply unit is configured to output electric power generated by the generator, and not to transmit the power output from the generating engine to the drive wheels. The support mechanism is installed on the body frame in a way that supports the engine drive power supply unit in a way that allows the translational vibration in the direction of the cylinder caused by the residual secondary inertial force and suppresses the rotational vibration around the crankshaft. The translational vibration in the cylinder direction caused by the residual secondary inertial force is the translational vibration in the direction of the cylinder axis of the engine for power generation when viewed along the axis of the crankshaft due to the secondary inertial force. The primary balancer suppresses the primary inertial force and the inertial force remaining in the engine for power generation when the primary inertial force couple is suppressed. The rotational vibration around the crankshaft is the rotational vibration centered on a line parallel to the axis of the crankshaft.

The vibration caused by the primary inertial force is the vibration generated with the up and down motion of the piston of the engine for power generation, and it is the vibration generated synchronously with the rotation of the crankshaft of the engine. The vibration caused by the primary inertial force mainly produces vibration in the direction of the cylinder axis. The vibration caused by the primary inertia couple is the vibration generated by the rotation force of the engine around the crankshaft for power generation. The biaxial primary balancer has two balancer shafts that rotate in opposite directions in synchronization with the rotation of the crankshaft and are parallel to the crankshaft. With the dual-axis primary balancer, the vibration of the power generation engine caused by the primary inertial force and the primary inertial couple can be suppressed. The secondary inertial force is the inertial force generated at a frequency twice that of the primary inertial force, and is generated in the direction of the cylinder axis. The so-called configuration to allow the translational vibration in the direction of the cylinder caused by the residual secondary inertial force and to suppress the rotational vibration around the crankshaft refers to setting the support mechanism in such a way that the vibration amplitude and vibration direction caused by the residual secondary inertial force move. Movable distance and direction.

In the series hybrid straddle-type vehicle of (1), a two-axis primary balancer for suppressing vibration caused by primary inertial force and primary inertial couple is installed in the generator engine of the engine-driven power supply unit. In addition, in order to allow the translational vibration of the cylinder direction caused by the residual secondary inertial force and suppress the rotational vibration around the crankshaft, the support mechanism for suspending the engine drive power supply unit is installed on the vehicle in a manner that supports the engine drive power supply unit. body frame.

Thereby, the primary inertial force and the primary inertial couple generated in the power generation engine are suppressed by using the biaxial primary balancer installed in the power generation engine. At this time, since the vibration caused by the secondary inertial force remains in the power generating engine, the vibration caused by the remaining secondary inertial force can be suppressed from being transmitted to the vehicle body frame through the supporting mechanism. In this way, the vibration generated by the power generation engine of the engine-driven power supply unit can be reduced, and the supporting mechanism can also be specially used to suppress the vibration caused by the residual secondary inertial force. Thereby, in the series hybrid straddle type vehicle, it is possible to suppress or prevent the enlargement and the complexity of the structure, and effectively suppress or prevent the transmission of the vibration of the engine for power generation to the frame.

According to an aspect of the present invention, the series hybrid straddle-type vehicle can have the following configurations. (2) A series hybrid straddle vehicle as in (1), wherein The above-mentioned supporting mechanism is constituted by a link part which is a combination of a link mechanism and an elastic body, and forms a plurality of pairs.

In the series hybrid straddle-type vehicle of (2), the supporting mechanism is composed of a plurality of pairs of link portions that are a combination of a link mechanism and an elastic body. Thereby, in the series hybrid straddle-type vehicle of (2), when viewed along the axis of the crankshaft, the support mechanism can be set to allow the secondary inertial force generated in the axis of the cylinder of the engine-driven power supply unit The structure of the resulting vibration. In addition, the support mechanism may be configured to suppress vibration in a rotational direction centered on a line passing through the center of gravity and parallel to the axis of the crankshaft. Therefore, in the series hybrid straddle type vehicle of (2), transmission of the vibration generated in the power generating engine to the frame can be efficiently suppressed.

According to an aspect of the present invention, the series hybrid straddle-type vehicle can have the following configurations. (3) A serial hybrid straddle vehicle as in (2), wherein When viewed along the width direction of the vehicle, at least a part of the generator overlaps with the engine for power generation, and is offset from one or more cylinders of the engine for power generation in the width direction of the vehicle; and The above-mentioned link parts are composed of a plurality of pairs arranged respectively on the left and right sides, and each has play allowing displacement in a direction intersecting with the operating direction of the above-mentioned link parts, and each pair of the above-mentioned link parts is In the width direction, the deviation of the distance from each of the paired connecting rod parts to the center of the above-mentioned cylinder is larger than the distance from each of the paired connecting rod parts to the center of gravity of the above-mentioned engine drive power supply unit. The deviation is greater than the deviation of the distance from each of the paired link portions to the center of the series hybrid straddle-type vehicle in the vehicle width direction.

According to (3), in the series hybrid straddle-type vehicle, in the vehicle width direction, the deviation of the distance from each of the paired link parts to the center of the cylinder is larger than that from each of the paired link parts. Or the deviation of the distance from the center of gravity of the engine-driven power supply unit. Also, in the series hybrid straddle-type vehicle of (3), in the vehicle width direction, the deviation of the distance from each of the paired link parts to the center of the cylinder is greater than that of the paired link parts. The deviation of the distance between each of them and the center of the series hybrid straddle-type vehicle in the vehicle width direction. Therefore, in the series hybrid straddle-type vehicle of (3), an inertial force is likely to act on the engine-driven power supply unit. The center of the vehicle is the force that the center rotates in the horizontal direction. However, the serial hybrid straddle vehicle of (3) can suppress the self-generation of inertial force such as rotating the body of the series hybrid straddle vehicle in the horizontal direction by the link portion with play. Passed to the framework with the engine.

According to an aspect of the present invention, the series hybrid straddle-type vehicle can have the following configurations. (4) A series hybrid straddle vehicle as in (2) or (3), in which The connecting rod part is composed of a first pair, a second pair, and a third pair respectively arranged on the left and right sides. The first pair and the second pair are designed to allow translational vibration in the direction of the cylinder caused by the above-mentioned residual secondary inertial force. The above-mentioned third pair suppresses the above-mentioned rotational vibration around the crankshaft.

In the series hybrid straddle-type vehicle of (4), the link portion includes a first pair, a second pair, and a third pair. The first pair and the second pair move in the direction that allows the translational vibration of the cylinder direction caused by the residual secondary inertial force. The third pair suppresses rotational vibration around the crankshaft. Thereby, when viewed along the axis of the crankshaft, the support mechanism can be configured to allow vibration caused by the residual secondary inertial force generated in the axis of the cylinder of the engine-driven power supply unit and to suppress vibration around the direction of rotation of the crankshaft. structure. Therefore, in the series hybrid straddle type vehicle of (4), transmission of the vibration generated in the power generating engine to the frame can be efficiently suppressed.

According to an aspect of the present invention, the series hybrid straddle-type vehicle can have the following configurations. (5) The serial hybrid straddle vehicle according to any one of (1) to (4), wherein The above-mentioned engine for power generation is a single-cylinder engine, a two-cylinder engine other than a parallel two-cylinder engine whose combustion timing is 90° and 270°, a three-cylinder engine, or a four-cylinder engine other than a CROSSPLANE type parallel four-cylinder engine.

In a series hybrid straddle vehicle, the balancer is used to suppress the vibration caused by the primary inertial force and the primary inertial couple, and the support mechanism is used to suppress the vibration caused by the secondary inertial force from being transmitted to the frame, so that even (5) The power generation engine of the series hybrid straddle vehicle can also suppress the transmission of vibration to the frame.

The technical terms used in this specification are only used to define specific embodiments, and are not intended to limit the invention. The term "and/or" used in this specification includes all or all combinations of one or more associated and exemplified constituents. When used in this specification, the use of the terms "including, including (including)", "comprising", "comprising" or "having" and variations thereof specify the features, processes, operations, elements, and components described And/or the existence of equivalents thereof, but may include one or more of steps, actions, elements, components, and/or groups thereof. When used in this specification, the terms "mount", "connect", "couple" and/or their equivalents are used broadly to include direct and indirect mounting, connecting and coupling. Furthermore, "connection" and "combination" are not limited to physical or mechanical connection or combination, and may include direct or indirect electrical connection or combination. Unless otherwise defined, all terms (including technical terms and scientific terms) used in this specification have the same meaning as commonly understood by those skilled in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings in the context of the related art and the present invention, and as long as they are not clearly defined in this specification, they should not be interpreted as idealized or Explain the meaning of over-formalization. In the description of the present invention, it can be understood that various techniques and processes are disclosed. Each of them has individual benefits, and can be used together with one or more of the other disclosed techniques, or as the case may be, with all of them. Therefore, for the sake of clarity, the description limits all possible combinations in which various steps are unnecessarily repeated. Nevertheless, the specification and scope of patent application should be understood and interpreted as that all such combinations are within the scope of the present invention and technical solutions.

In this specification, a new engine drive power supply unit will be described. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without reference to these specific details. The present invention should be considered as an illustration of the present invention and is not intended to limit the present invention to specific embodiments shown by the following drawings or descriptions.

As for a series hybrid straddle vehicle, a straddled vehicle refers to a vehicle in which a rider straddles a saddle. Examples of straddle-type vehicles include light motorcycles with pedals, off-road motorcycles, and road motorcycles. In addition, the straddle-type vehicle is not limited to a motorcycle, and may be, for example, a tricycle, an ATV (All-Terrain Vehicle, all-terrain vehicle), or the like. A tricycle can have 2 front wheels and 1 rear wheel, or 1 front wheel and 2 rear wheels. The driving wheels of the straddle vehicle can be rear wheels or front wheels. Also, the drive wheels of the straddle-type vehicle may be both rear wheels and front wheels. Also, it is preferable that the straddle-type vehicle is configured to be able to turn in an inclined posture. A straddle-type vehicle configured to turn in an inclined posture is configured to turn in a posture inclined toward the center of a curve. Thereby, the straddle type vehicle configured to be able to turn in an inclined posture resists the centrifugal force applied to the vehicle when turning.

The body frame constitutes the skeleton of the straddle-type vehicle, and supports the mounted parts of the straddle-type vehicle such as the power storage device, the engine drive power supply unit, and the drive motor. The car body frame includes a front fork, a frame body and a swing arm. The frame body can be, for example, a single cradle type, a double cradle type, a diamond type, and a monocoque type, but is not limited thereto. In the body frame, the front fork, frame body and swing arm are integrated to bear the load from the front and rear wheels.

The engine for power generation is, for example, an engine having a high-load region and a low-load region. The engine for power generation is, for example, a four-stroke engine. A four-stroke engine has a high-load region and a low-load region between the four-strokes. A four-stroke engine having a high-load region and a low-load region is, for example, a single-cylinder engine. Also, it has a high load area and a low load area. A four-stroke engine having a high-load region and a low-load region includes a continuous non-combustion region of 180 degrees or more within a cycle of 720 degrees. In a four-stroke engine with a high-load region and a low-load region, the variation in rotation at low rotational speeds is greater than in other types of engines. The high load region refers to a region where the load torque in one combustion cycle of the engine is higher than the average value of the load torque in one combustion cycle. The low load area refers to the area other than the high load area in one combustion cycle. When viewed on the basis of the rotation angle of the crankshaft, the low load area in the engine such as the high load area is wide. The compression stroke has an overlap with the high load region. For example, in an engine having a high load region and a low load region, the start position of the crankshaft can be adjusted in such a way as to obtain a start interval for causing the rotational force of the crankshaft to exceed the compression reaction force of the high load region when the engine is started.

The generator is, for example, a permanent magnet starter generator. The generator can also be, for example, a motor that does not use permanent magnets. Permanent magnet generators are, for example, brushless motors. A brushless motor is a motor without a commutator. A generator is a motor generator that is driven by an engine for generating electricity to generate electricity. The generator can also function as a starter motor for starting an engine for generating electricity. The generator is not limited to this. The permanent magnet generator can be, for example, a brushed DC motor. The brushless motor may be, for example, an outer rotor type, or may be an inner rotor type. Also, brushless motors can be axial gap type instead of radial gap type. Also, the generator may be of a type that does not have permanent magnets in the rotor, for example.

The support mechanism refers to, for example, a combination of a link mechanism and an elastic member. The support mechanism may be any one of, for example, a link mechanism and an elastic member. The elastic member is, for example, a rubber bush. The elastic member may also be, for example, damper rubber. The elastic member is a member with elasticity. The elastic member includes, for example, a buffer member, a vibration damping member, a vibration-proof member, and the like. The supporting mechanism is a connecting part or a combination of these connecting parts used to support the engine for power generation on the vehicle body frame. The supporting mechanism allows the vibration of the power generating engine and supports the power generating engine on the vehicle body frame. The connection part that allows the vibration of the power generation engine and supports the power generation engine to the vehicle body frame is, for example, an elastic member that connects the power generation engine and the frame. The combination of connecting parts that allows the vibration of the power generating engine and supports the power generating engine to the vehicle body frame is, for example, a combination of a link mechanism and an elastic member. The elastic member is, for example, a rubber bush. The elastic member may also be, for example, an inner and outer cylinder bush, a sprue bush, or a damper rubber. The elastic member is a member with elasticity. The elastic member includes, for example, a buffer member, a vibration damping member, a vibration-proof member, and the like. The link mechanism is, for example, a combination of a link plate and a rotation support portion. The rotation supporting part is, for example, a bearing supporting part constituted by a bearing. Instead of the bearing, the rotation support may be supported by, for example, an elastic body configured to allow the link mechanism to rotate. [Effect of Invention]

According to the present invention, it is an object of the present invention to provide a series hybrid straddle type vehicle capable of efficiently suppressing transmission of vibration generated in an engine for power generation to a frame.

Hereinafter, the present invention will be described with reference to the drawings.

[the first embodiment] FIG. 1 is a diagram showing the configuration of a series hybrid straddle vehicle 1 according to a first embodiment of the present invention. In addition, hereinafter, the series hybrid type straddle type vehicle will also be simply referred to as a straddle type vehicle. Fig. 1(a) is a left side view showing the configuration of a straddle-type vehicle 1 according to the first embodiment of the present invention, and Fig. 1(b) is a power supply unit for driving the engine of the straddle-type vehicle 1 in Fig. 1(a) Figure 20 is the left side view of the enlarged representation. In this specification and drawings, F represents the forward direction of the straddle type vehicle 1 . B represents the rearward direction of the straddle type vehicle 1 . FB represents the front-back direction of the straddle-type vehicle 1 . U represents the upward direction of the straddle type vehicle 1 . D represents the downward direction of the straddle type vehicle 1 . UD represents the up-down direction of the straddle-type vehicle 1 . L indicates the left direction of the straddle vehicle 1 . R indicates the right direction of the straddle vehicle 1 . LR represents the left-right direction of the straddle-type vehicle 1 . LR is also the vehicle width direction of the straddle vehicle 1 . That is, the vehicle width direction LR of the straddle-type vehicle 1 includes both the right direction R and the left direction L of the straddle-type vehicle 1 .

The straddle type vehicle 1 of FIG. 1( a ) includes a vehicle body frame 10 , an engine drive power supply unit 20 and a support mechanism 30 . The engine drive power supply unit 20 has an engine 21 for power generation and a generator 25 . The engine 21 for power generation has one or a plurality of cylinders 211 and a biaxial primary balancer 212 . The biaxial primary balancer 212 suppresses the vibration caused by the primary inertial force and the primary inertial couple. The generator 25 is attached to the engine 21 for power generation. The generator 25 is driven by the rotation of the crankshaft 213 of the generator engine 21 to generate electricity, and supplies the generated electric power to the driving motor 16 through the power storage device 15 or without the power storage device 15 . The engine drive power supply unit 20 is configured to be able to output the electric power generated by the generator 25 and not to transmit the power output by the generator engine 21 to the drive wheels 17 . The support mechanism 30 is installed on the vehicle body frame 10 in a manner of supporting the engine-driven power supply unit 20 in a manner that allows the translational vibration in the cylinder direction caused by the residual secondary inertial force and suppresses the rotational vibration around the crankshaft 213 . The translational vibration in the cylinder direction caused by the residual secondary inertial force is the translational vibration generated in the cylinder axis T direction of the engine 21 for power generation when viewed along the crankshaft axis S direction due to the secondary inertial force. The primary inertial force and the inertial force occasionally remaining in the generator engine 21 are suppressed by the biaxial primary balancer 212 . The rotational vibration around the crankshaft 213 is the rotational vibration centered on a line parallel to the axis S of the crankshaft.

The vibration X1 caused by the primary inertial force shown in FIG. 1( b) is the vibration generated along with the reciprocating motion of the piston 214 of the engine 21 for power generation, and is the vibration generated synchronously with the rotation of the crankshaft 213 of the engine 21 for power generation. The vibration X1 caused by the primary inertial force mainly generates vibration in the cylinder axis T direction of the cylinder 211 . The vibration X2 caused by the primary inertial couple is the vibration generated by the rotational force of the engine 21 around the crankshaft 213 for power generation. The biaxial primary balancer 212 suppresses the vibration X1 of the power generation engine 21 caused by the primary inertial force and the vibration X2 of the power generation engine 21 caused by the primary inertial force through the balancer. Two balancer shafts 213-1 and 213-2 that rotate in opposite directions and are parallel to the crankshaft 213 respectively. The secondary inertial force is the inertial force generated at a frequency twice that of the primary inertial force, and is generated in the direction of the cylinder axis T. The amplitude of the vibration Y1 caused by the secondary inertial force is smaller than the vibration X1 caused by the primary inertial force. The so-called configuration is to allow the translational vibration in the direction of the cylinder caused by the residual secondary inertial force, and to suppress the rotational vibration around the crankshaft 213. The movable distance and direction of the supporting mechanism 30.

In the saddled vehicle 1 of the present embodiment, a biaxial primary balancer 212 for suppressing primary inertial forces and vibrations caused by primary inertial couples is provided in the generator engine 21 of the engine drive power supply unit 20 . In addition, the support mechanism 30 of the engine-driven power supply unit 20 is suspended to support the engine-driven power supply unit 20 in such a way that the translational vibration in the direction of the cylinder caused by the residual secondary inertial force is allowed and the rotational vibration around the crankshaft 213 is suppressed. installed on the vehicle body frame 10 in a manner.

The engine drive power supply unit 20 of this embodiment suppresses the primary inertial force and primary inertial couple generated in the power generating engine 21 by the biaxial primary balancer 212 provided in the power generating engine 21 . At this time, since the vibration due to the secondary inertial force remains in the power generating engine, the vibration due to the remaining secondary inertial force can be suppressed from being transmitted to the vehicle body frame 10 through the support mechanism 30 . In this way, the vibration generated by the generator engine 21 of the engine-driven power supply unit 20 can be reduced, and the support mechanism can also be specially used to suppress the vibration caused by the residual secondary inertial force. Thereby, in the series hybrid straddle-type vehicle 1 , it is possible to suppress or prevent the increase in size and the complexity of the structure, and to efficiently suppress or prevent transmission of the vibration of the power generating engine 21 to the vehicle body frame 10 .

[the second embodiment] A second embodiment of the present invention will be described. Fig. 2(a) is an enlarged left side view of the engine drive power supply unit 20 of the straddle type vehicle 2 according to the second embodiment of the present invention, and Fig. 2(b) is the straddle type vehicle of Fig. 2(a) 2 shows an enlarged rear view of the engine drive power supply unit 20, and FIG. 2(c) is an enlarged left side view of the support mechanism 30 of the straddle vehicle 2 shown in FIG. 2(a). In this embodiment, the straddle type vehicle 2 is configured as follows. In this embodiment, the same code|symbol as that of the straddle type vehicle 1 shown in FIG. 1 is attached|subjected to the same structure as 1st Embodiment.

As shown in FIG. 2( b ), the supporting mechanism 30 is formed in plural pairs. Specifically, the support mechanism 30 is installed at one place on the left and right of the power generating engine 21, and is installed at the same position when viewed in the left and right direction, and these are regarded as a pair (see FIGS. 2( a ) and ( b )). In the present embodiment, such pairs are provided at a plurality of locations of the engine 21 for power generation. Moreover, as shown in FIG. 2(c), the support mechanism 30 includes a link portion 31 which is a combination of a link mechanism and an elastic body. Specifically, the connecting rod portion 31 is connected by a connecting rod plate 312 extending in a direction perpendicular to the crankshaft axis S direction (left-right direction LR), and a bearing support portion 313 having a rotating shaft parallel to the crankshaft axis S direction. Rod mechanism 311 . The link mechanism 311 is configured such that the link plate 312 is rotatable relative to the vehicle body frame 10 in a direction perpendicular to the crankshaft axis S direction. The link mechanism 311 is supported by the vehicle body frame 10 via an elastic body 314 , and is supported by the generator engine 21 via an elastic body 315 . The link mechanism 311 suppresses the large rotation of the link plate 312 by the elastic body 314 , and supports the generator engine 21 by the elastic body 315 so that it can vibrate.

In this embodiment, by constituting the support mechanism 30 as described above, the support mechanism 30 can be set as the two sides that are allowed to be generated in the direction of the cylinder axis T of the engine drive power supply unit 20 when viewed along the direction of the crankshaft axis S. The structure of the vibration caused by the secondary inertial force. In addition, the support mechanism 30 may be configured to suppress rotational vibration around the crankshaft 213 . Therefore, in the straddle-type vehicle 2 according to the present embodiment, transmission of the vibration generated in the power generating engine 21 to the vehicle body frame 10 can be efficiently suppressed.

[the third embodiment] A third embodiment of the present invention will be described. Fig. 3(a) is an enlarged left side view of the engine drive power supply unit 20 of the straddle-type vehicle 3 according to the third embodiment of the present invention, and Fig. 3(b) is the straddle-type vehicle of Fig. 3(a) 3 is an enlarged top view of the engine drive power supply unit 20. In this embodiment, the straddle type vehicle 3 is configured as follows. In this embodiment, the same code|symbol as that of the straddle type vehicle 1 shown in FIG. 1 is attached|subjected to the same structure as 1st Embodiment.

As shown in FIG. 3( a ), at least a part of the generator 25 of the straddle-type vehicle 3 overlaps with the generator engine 21 when viewed along the vehicle width direction LR. As shown in FIG. 3( b ), the generator 25 and one or a plurality of cylinders 211 of the power generating engine 21 are shifted in the vehicle width direction LR. The link portion 31 constitutes a plurality of pairs including pairs arranged on the left and right sides, respectively. The link portion 31 has a play q1 allowing displacement in a direction Q intersecting the operating direction P of the link portion 31 . For each pair of link parts 31, the deviation of the distance (q21, q22) from each of the paired link parts 31 to the center of the cylinder 211 (cylinder axis T) in the vehicle width direction LR, Greater than the deviation of the distance (q31, q32) from each of the paired link parts 31 to the center of gravity G of the engine drive power supply unit 20, and greater than that from each of the paired link parts 31 to the straddle type The deviation of the distance (q41, q42) to the center C in the vehicle width direction LR of the vehicle 1.

According to the straddle type vehicle 3 of this embodiment, in the vehicle width direction LR, the deviation q2 of the distance from each of the paired link parts 31 to the center of the cylinder 211 is larger than that from the paired link parts 31. The deviation q3 of the distance between each of them to the center of gravity G of the engine drive power supply unit 20 . Also, according to the straddle-type vehicle 3, in the vehicle width direction LR, the deviation q2 of the distance from each of the paired link portions 31 to the center of the cylinder 211 is larger than that from each of the paired link portions 31. Or the deviation q4 of the distance to the center C in the vehicle width direction LR of the straddle-type vehicle. Therefore, in the straddle type vehicle 3 of the present embodiment, the inertial force H is likely to act on the engine drive power supply unit 20. The force of the horizontal rotation. However, the straddle type vehicle 3 of this embodiment can suppress the inertial force such as rotating the body of the series hybrid type straddle type vehicle 3 in the horizontal direction by the link portion 31 which is a link with play. H is transmitted from the power generation engine 21 to the vehicle body frame 10 .

[the fourth embodiment] A fourth embodiment of the present invention will be described. Fig. 4(a) is an enlarged left side view of the engine drive power supply unit 20 of the straddle type vehicle 4 according to the fourth embodiment of the present invention, and Fig. 4(b) to (d) are the diagrams of Fig. 4(a). An enlarged left side view of the link portions 32L to 34L of the support mechanism 30 of the engine drive power supply unit 20 of the straddle-type vehicle 4 . In this embodiment, the straddle type vehicle 4 is configured as follows. In this embodiment, the same code|symbol as that of the straddle type vehicle 1 shown in FIG. 1 is attached|subjected to the same structure as 1st Embodiment.

The link portion of the straddle type vehicle 4 of FIG. The third pair of link parts 34L and 34R constitutes. The link parts 32L and 32R as the first pair and the link parts 33L and 33R as the second pair operate in a direction that allows translational vibration (vibration Y1) in the cylinder direction caused by the residual secondary inertial force, and act as the third pair The connecting rod portions 34L and 34R suppress rotational vibration around the crankshaft 213 (vibration X2). Furthermore, in Fig. 4 (a) to (d), only the link parts 32L- 34L in the left direction L on the left-right direction LR of the straddle-type vehicle 4 are shown, ie the link parts 32L- 34L are not shown. The link portions in the right direction R in the left-right direction LR of the seated vehicle 4 are the link portions 32R to 34R.

Specifically, the connecting rod portion 32 is connected by a connecting rod plate 322 extending in a direction perpendicular to the crankshaft axis S direction (left-right direction LR), and a bearing support portion 323 having a rotating shaft parallel to the crankshaft axis S direction. Rod mechanism 321 . The link mechanism 321 is configured such that the link plate 322 is rotatable relative to the vehicle body frame 10 in a direction perpendicular to the crankshaft axis S direction. The link mechanism 321 is supported by the vehicle body frame 10 by the elastic body 325 via the elastic body support portion 324 , and is supported by the generator engine 21 by the elastic body 327 by the vehicle body support portion 326 . The elastic body 325 suppresses the large rotation of the link plate 322, and the elastic body 327 supports the generator engine 21 so that it can vibrate. The link portion 33 constitutes a link mechanism 331 by a link plate 332 extending in a direction perpendicular to the crank axis S direction (left-right direction LR), and a bearing support portion 333 having a rotation axis parallel to the crank axis S direction. The link mechanism 331 is configured such that the link plate 332 is rotatable relative to the vehicle body frame 10 in a direction perpendicular to the crankshaft axis S direction. The link mechanism 331 is supported by the vehicle body frame 10 by the elastic body 335 via the elastic body support portion 334 , and is supported by the generator engine 21 by the elastic body 337 by the vehicle body support portion 336 . The elastic body 335 suppresses the large rotation of the link plate 332, and the elastic body 337 supports the generator engine 21 so that it can vibrate. The link portion 34 constitutes a link mechanism 341 by a link plate 342 extending in a direction perpendicular to the crank axis S direction (left-right direction LR), and a bearing support portion 343 having a rotation axis parallel to the crank axis S direction. The link mechanism 341 is configured such that the link plate 342 is rotatable relative to the vehicle body frame 10 in a direction perpendicular to the crankshaft axis S direction. The link mechanism 341 is supported by the generator engine 21 by the elastic body 347 via the vehicle body support portion 346 . The elastic body 347 supports and vibrates the generator engine 21 .

In the straddle-type vehicle 4 of the present embodiment, the link portions include the link portions 32 as the first pair, the link portions 33 as the second pair, and the link portions 34 as the third pair. When the first pair of connecting rod parts 32 rotate around the bearing support part 323 and the second pair of connecting rod parts 33 rotate around the bearing supporting part 333, the generator engine 21 is allowed to vibrate in translation in the direction of the cylinder. direction and the direction that allows the rotational vibration around the crankshaft to move. Here, the third pair of link portions 34 suppresses rotational vibration of the generator engine 21 around the crankshaft. When the generator engine 21 rotates around the crankshaft, a force acts on the line Z connecting the bearing support portion 343 of the link portion 34 and the vehicle body support portion 346 . At this time, the rotational vibration of the generator engine 21 around the crankshaft is suppressed by suppressing the generator engine 21 from moving in the direction of the line Z beyond the expansion and contraction range of the elastic body 347 . Thereby, when viewed along the direction of the crankshaft axis S, the support mechanism 30 can be set to allow the vibration caused by the residual secondary inertial force generated in the direction of the cylinder axis T of the engine drive power supply unit 20, and suppress the rotation around the crankshaft. The structure of the vibration of the direction. Therefore, in the series hybrid straddle type vehicle 4 of the present embodiment, transmission of the vibration generated in the power generating engine 21 to the vehicle body frame 10 can be efficiently suppressed.

(Application example) The engines for power generation in the above-mentioned first to fourth embodiments are, for example, single-cylinder engines, two-cylinder engines other than parallel twin-cylinder engines whose crankshaft angles at combustion timings are 90 degrees and 270 degrees, three-cylinder engines, or crossplane engines. A four-cylinder engine other than a parallel four-cylinder engine. The above-mentioned engines for power generation other than the single-cylinder engine may be parallel-type engines or V-type engines. When the engines for power generation in the first to fourth embodiments are these engines, the vibration caused by the primary inertial force and the primary inertial couple can be suppressed by using the balancer, and the secondary inertial force can be suppressed by the support mechanism. The induced vibration is transmitted to the frame, and the vibration is suppressed from being transmitted to the frame.

1: Series hybrid straddle vehicle 2: Series hybrid straddle vehicle 3: Series hybrid straddle vehicle 4: Series hybrid straddle vehicle 5: Series hybrid straddle vehicle 10: Body frame 15: Power storage device 16: Drive motor 17: Drive wheel 20: Engine drive power supply unit 21: Engine for power generation 25: generator 30: Supporting institutions 31: Connecting rod 32L: Connecting rod 33L: Connecting rod 34L: Connecting rod 211: Cylinder 212: Biaxial primary balancer 213: crankshaft 213-1, 213-2: balancer shaft 214: piston 311: Linkage 312: Connecting rod plate 313: Bearing support department 314:Elastomer 315: Elastomer 321: Linkage 322: Connecting rod plate 323: Bearing support department 324: Elastomer support 325: Elastomer 326: Car body support department 327:Elastomer 331: Linkage 332: Connecting rod plate 333: Bearing support department 334: Elastomer support 335:Elastomer 336: Car body support department 337:Elastomer 341: Linkage 342: Connecting rod plate 343: Bearing support department 346: Car body support department 347:Elastomer

Fig. 1(a) is a left side view showing the configuration of a series hybrid straddle-type vehicle according to the first embodiment of the present invention, and (b) is a drive power supply unit for the engine of the straddle-type vehicle 1 in (a). Composing the left side view of the magnified representation. Fig. 2(a) is an enlarged left side view of the engine-driven power supply unit of the series hybrid straddle-type vehicle according to the second embodiment of the present invention, and (b) is the series hybrid straddle of (a). (c) is an enlarged left side view of the supporting mechanism of the series hybrid straddle-type vehicle in (a). Fig. 3(a) is an enlarged left side view of the engine-driven power supply unit of the series hybrid straddle-type vehicle according to the third embodiment of the present invention, and (b) is the series hybrid straddle of (a). A top view of an enlarged representation of the engine drive power supply unit of a small vehicle. Fig. 4(a) is an enlarged left side view of the engine-driven power supply unit of a series hybrid straddle-type vehicle according to a fourth embodiment of the present invention, and (b) to (d) are series hybrids of (a) An enlarged left side view of the link portion of the support mechanism of the engine drive power supply unit of the powered straddle vehicle.

1: Series hybrid straddle vehicle

10: Body frame

15: Power storage device

16: Drive motor

17: Drive wheel

20: Engine drive power supply unit

21: Engine for power generation

25: generator

30: Supporting institutions

211: Cylinder

212: Biaxial primary balancer

213: crankshaft

213-1, 213-2: balancer shaft

214: piston

Claims (5)

A series hybrid straddle vehicle, which has: body frame; drive motor; a drive wheel, which is rotatably supported on the vehicle body frame and driven by the drive motor; An engine-driven power supply unit having: an engine for power generation, which has one or a plurality of cylinders, and a two-axis primary balancer for suppressing vibration caused by primary inertial forces and primary inertial couples; and a generator, which is installed on the above-mentioned power generation The engine is driven by the rotation of the crankshaft of the above-mentioned power-generating engine to generate electricity, and the electric power generated is supplied to the above-mentioned driving motor through the power storage device or not through the power storage device; and it is configured to be output by the above-mentioned generator and does not transmit the power output by the above-mentioned engine for power generation to the above-mentioned drive wheels; and The supporting mechanism is installed on the above-mentioned vehicle body frame to support the above-mentioned engine drive power supply unit in a manner that allows the translational vibration in the direction of the cylinder caused by the residual secondary inertial force and suppresses the rotational vibration around the crankshaft. The translational vibration in the cylinder direction caused by the inertial force is the translational vibration in the direction of the cylinder axis of the above-mentioned engine for power generation when viewed along the axis of the crankshaft due to the secondary inertial force. The balancer suppresses the primary inertial force and the inertial force that the primary inertial force occasionally remains in the above-mentioned engine for power generation. The above-mentioned rotational vibration around the crankshaft is rotational vibration centered on a line parallel to the crankshaft axis. Such as the serial hybrid straddle vehicle of claim 1, wherein The above-mentioned supporting mechanism is constituted by a link part which is a combination of a link mechanism and an elastic body, and forms a plurality of pairs. Such as the serial hybrid straddle vehicle of claim 2, wherein When viewed along the width direction of the vehicle, at least a part of the generator overlaps with the engine for power generation, and is offset from one or more cylinders of the engine for power generation in the width direction of the vehicle; and The above-mentioned link parts are composed of a plurality of pairs arranged respectively on the left and right sides, and each has play allowing displacement in a direction intersecting with the operating direction of the above-mentioned link parts, and each pair of the above-mentioned link parts is In the width direction, the deviation of the distance from each of the paired connecting rod parts to the center of the above-mentioned cylinder is larger than the distance from each of the paired connecting rod parts to the center of gravity of the above-mentioned engine drive power supply unit. The deviation is greater than the deviation of the distance from each of the paired link portions to the center of the series hybrid straddle-type vehicle in the vehicle width direction. Such as the serial hybrid straddle vehicle of claim 2 or 3, wherein The above-mentioned connecting rod part is composed of a first pair, a second pair and a third pair arranged respectively on the left and right sides. direction, the above-mentioned third pair suppresses the above-mentioned rotational vibration around the crankshaft. A serial hybrid straddle-type vehicle according to any one of claims 1 to 4, wherein The above-mentioned engine for power generation is a single-cylinder engine, a two-cylinder engine other than a parallel two-cylinder engine whose combustion timing is 90° and 270°, a three-cylinder engine, or a four-cylinder engine other than a CROSSPLANE type parallel four-cylinder engine.

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