Abstract: A straddle-type vehicle comprises a front cowling covering a front portion of a vehicle body; and an aerodynamic device including an aerodynamic force generating section which generates a downforce by air flowing in a rearward direction along an upper surface of the front cowling, and the aerodynamic force generating section is placed to overlap with the upper surface of the front cowling, when viewed from above.

Abstract: A vehicle body frame structure of a straddle-type vehicle comprises a head pipe into which a steering shaft connected to a handle is inserted; and a pair of main frames extending rearward and outward in a vehicle width direction from the head pipe in such a manner that the main frames are spaced apart from each other in the vehicle width direction. Each of the main frames includes an upper frame extending rearward from an upper portion of the head pipe, and a lower frame extending rearward from a lower portion of the head pipe. Between the upper frame and the lower frame, a retraction space which is located inward in the vehicle width direction relative to an end portion of the handle in a turn operation state is provided.

Abstract: Provided is a vehicle body frame structure which can reduce a burden in the assembly of a straddle-type vehicle. The vehicle body frame comprises a main frame; and a rear frame connected to and extending rearward from the main frame. The main frame includes first and second members which are connected to each other. The main frame includes first and second connection portions spaced apart from each other in a direction perpendicular to a vehicle width direction. The connection portions are provided at the first member and the second member, respectively. The rear frame includes a first connected portion connected to the first connection portion by a first fastener member, and a second connected portion connected to the second connection portion by a second fastener member. The restricting direction of the first fastener member is orthogonal to the restricting direction of the second fastener member.

Abstract: A vehicle body frame structure is applied to a straddle-type vehicle in which a driving power transmission mechanism which transmits rotational power of a driving source to a rear wheel is placed on a first side in a vehicle width direction with respect to a center line of a vehicle body. The structure comprises a head pipe; and a pair of main frames extending rearward and outward in the vehicle width direction from the head pipe such that the main frames are spaced apart in the vehicle width direction. The pair of main frames include right- and left-side portions, respectively, facing the transmission mechanism in the vehicle width direction, and the right-side portion located on a second side in the vehicle width direction has a stiffness lower than that of the left-side portion located on the first side in the vehicle width direction.

Abstract: Provided is a vehicle body frame structure which can reduce a burden in assembly of a straddle-type vehicle. The structure comprises a head pipe; and a pair of main frames extending rearward from the head pipe and outward in a vehicle width direction such that the main frames are spaced apart from each other in the vehicle width direction. Rear portions of the pair of main frames are detachably coupled to each other in the vehicle width direction via a coupling member. The pair of main frames include a pair of front frame members including respective first mounts to which a drive unit of the vehicle is mounted, and a pair of respective rear frame members located rearward relative to the front frame members. The pair of rear frame members have a stiffness lower than that of the front frame members in the vehicle width direction.

Abstract: Provided is a motorcycle incorporating a supercharger which can prevent an increase in a size of a vehicle body. A motorcycle comprises a supercharger which compresses intake air; an air-intake chamber which is placed downstream of the supercharger, stores the intake air compressed in the supercharger, and guides the intake air from the air-intake chamber to a combustion chamber of an engine; a fuel tank placed above the engine, wherein the air-intake chamber is placed between the fuel tank and the engine, and wherein the fuel tank includes a recess-forming section provided with a recess on a bottom surface of the fuel tank in such a manner that the bottom surface of the fuel tank does not interfere with the air-intake chamber.

Abstract: A motorcycle includes a fuel tank, a vehicle body frame, a pair of front forks, and a canister. The fuel tank contains gasoline therein. The vehicle body frame supports the fuel tank. The pair of front forks are placed spaced apart from each other in a vehicle width direction to support a front wheel from both sides in the vehicle width direction such that the front wheel is rotatable, and mounted to the vehicle body frame such that the pair of front forks are rotatable around a head pipe. The canister adsorbs gasoline contained in a gasoline vapor present inside the fuel tank and supplies the gasoline to an engine. The canister is placed inward in the vehicle width direction relative to the pair of front forks when viewed from a front, and in front of an engine when viewed from a side.

Abstract: A straddle-type vehicle comprises a vehicle body frame including a head pipe, and a front frame extending rearward from the head pipe; a motor placed below the front frame and supported on the front frame; a control device which controls the motor; and a support member placed in front of the head pipe, the control device being fastened to the support member.

Abstract: A component mounting structure of a vehicle comprises a frame assembly having a recess which is recessed in a predetermined direction; an intermediate section accommodated in the recess and removably fastened to the frame assembly, and a mounting member used to mount a first adjacent component adjacent to the frame assembly to the frame assembly, and the mounting member includes a connection element connected to the intermediate section in an inner space of the recess and a support element which is continuous with the connection element and supports the first adjacent component in a state in which the connection element is exposed outside through an opening of the recess.

Abstract: A straddle-type vehicle comprises a pair of vehicle body frames arranged in a vehicle width direction of a vehicle body and extending in a vehicle length direction of the vehicle body, a fuel tank placed between the pair of vehicle body frames, a tank bracket fastened to an upper surface of the fuel tank, and a support member which couples the tank bracket to at least one of the pair of vehicle body frames. The support member includes a frame coupling section detachably coupled to a mounting section provided on at least one of the pair of vehicle body frames, and a tank coupling section placed inward in the vehicle width direction relative to the frame coupling section and detachably coupled to the tank bracket.

Abstract: A motorcycle of the present invention comprises a vehicle body; and a protruding section which is mounted to the vehicle body such that the protruding section protrudes from the vehicle body to at least one of right and left, and the protruding section has a structure which causes air to flow from front to back along an upper surface of the protruding section to generate a force for pushing the vehicle body downward.

Abstract: A front wheel supporting structure for a straddle-type vehicle includes a front arm which supports a front axle and which extends rearward from the front axle to a location behind a front wheel, and a pair of upper and lower link members which are turnably connected to two vertically separated portions of a rear end of a front arm. The link members extend rearward from the rear end of the front arm. Rear ends of the link members are turnably connected to a vehicle body-configuring member. The front wheel supporting structure includes a front suspension mechanism which suppresses turning motion of the front arm.

Abstract: A steering apparatus for a two-wheeled motor vehicle includes a handlebars-side steering shaft supported by a head pipe, a wheel supporting cylindrical shaft supported by a front axle and over which a hub is fitted, and a steering link mechanism. First and second link members of the link mechanism are connected to each other in a plurality of articulations such that the link members can angularly move. An amount of angular movement is limited to a predetermined range, and a distance between a front wheel-side end and the steering shaft-side end of the steering link mechanism can be changed. The front wheel-side end of the steering link mechanism is connected to the wheel supporting cylindrical shaft through a brake caliper bracket member.

Abstract: A front wheel supporting structure for a vehicle includes a front arm for supporting a front axle and a suspension mechanism for resiliently suppressing vertical swinging motion of the front arm. The suspension mechanism includes a damper member disposed along a lateral direction between a head pipe and the front arm, and a connecting member for connecting the front arm with the damper member such that vertical swinging motion of the front arm is converted into lateral motion of the damper member.

Abstract: A steering apparatus for a two-wheeled motor vehicle includes a handlebars-side steering shaft supported by a head pipe, a wheel supporting cylindrical shaft supported by a front axle and over which a hub is fitted, and a steering link mechanism. First and second link members of the link mechanism are connected to each other in a plurality of articulations such that the link members can angularly move. An amount of angular movement is limited to a predetermined range, and a distance between a front wheel-side end and the steering shaft-side end of the steering link mechanism can be changed. The front wheel-side end of the steering link mechanism is connected to the wheel supporting cylindrical shaft through a brake caliper bracket member.

Abstract: To provide a swingarm supporting structure which can prevent rigidity of a case from becoming excessive and which can improve a degree of freedom of design. The swingarm supporting structure comprises: a case (3) in which a power unit is stored; and a bracket (4) for freely pivotally supporting a swingarm (5) up and down through a pivot shaft (10), the swingarm (5) supporting an axle, wherein the bracket (4) is detachably fixed to the case (3) from a fixed direction (DF) intersecting the pivot shaft (10).

Abstract: A front wheel supporting structure for a straddle-type vehicle includes a front arm which supports a front axle and which extends rearward from a front axle to a location behind a front wheel, and a pair of upper and lower link members which is turnably connected to two vertically separated portions of a rear end of a front arm. The link members extend rearward. Rear ends of the link members are turnably connected to a vehicle body-configuring member. The front wheel supporting structure includes a front suspension mechanism which suppresses turning motion of the front arm.

Abstract: A front wheel supporting structure for a vehicle comprises a front arm for supporting a front axle and a suspension mechanism for resiliently suppressing vertical swinging motion of the front arm. The suspension mechanism includes a damper member disposed along a lateral direction between a head pipe and the front arm, and a connecting member for connecting the front arm with the damper member such that vertical swinging motion of the front arm is converted into lateral motion of the damper member.

Abstract: An air intake duct (54) for fluid connecting between an air intake control valve unit (52) and a supercharger (60) includes a duct inlet (56) fluid connected with an outlet port (52b) of the air intake control valve (52) and oriented in a first direction (D1), a duct outlet (58) fluid connected with a suction port (60a) of the supercharger (60) and oriented in a second direction (D2) substantially perpendicular to the first direction (D1), and a duct body (74) for defining an air intake passage (78) extending from the duct inlet (56) to the duct outlet (58). The duct body (74) has a portion confronting the duct outlet (58), which is formed with a guide projection (80) that protrudes towards the duct outlet (58).

Abstract: A motorcycle includes a combustion engine (E) of a type, in which a cylinder block (34) protrudes upwardly from a crankcase (32), an air cleaner unit (42) for substantially purifying an air, and a supercharger (44) for taking a substantially purified air from the air cleaner unit (42) thereinto and supplying the air towards the combustion engine (E). The supercharger (44) is disposed rearwardly of the cylinder block (34) and the air cleaner unit (42) is disposed rearwardly thereof. Also, a surge tank (48) is disposed rearwardly upwardly of the cylinder block (34) of the combustion engine (E) and above the supercharger (44).