A cylinder head 42 of an internal combustion engine 4 is formed therein with a first exhaust port section 72A having an upstream inlet 72Aa opened and closed by a first exhaust valve 74A, a second exhaust port section 72B having an upstream inlet 72Ba opened and closed by a second exhaust valve…
In a vehicle with a swing-type engine, the air cleaner box (31) includes a first air cleaner box portion (31a) and a second air cleaner box portion (31 b) that are separate left and right box portions. The first air cleaner box portion (31a) and the second air cleaner box portion (31 b) are joined…
To provide a suspension device for a saddle-ride-type vehicle which can suppress the large-sizing of a bracket while suppressing a length of a link mechanism. A link mechanism 20L includes: a first link member 21 which has a first link upper end portion 21a thereof rotatably supported on a vehicle…
To provide a wiring structure of a throttle cable in a straddle type vehicle in which it is hard to exert the influence upon the volume of a container box. A wiring structure of a throttle cable 58 comprises a vehicle body frame 11, a unit swing engine 50 being supported on the vehicle body frame…
A two-wheeled motor vehicle comprising a battery case (21) which is positioned in front of the air cleaner (51) beside the throttle body (55) at least when the engine unit (5) is positioned at the top position in swinging.
A motorcycle has a frame, a seat supported at the frame, a storage box provided under the seat, a power unit including a cylinder in the front portion and provided under the storage box, a pivot shaft that extends in the vehicle widthwise direction under the cylinder and supports the power unit in…
A motor driving device includes a motor and a brake mechanism which brakes rotation of the motor. The motor and the brake mechanism are disposed in parallel to each other. A connection portion for connecting the motor and the brake mechanism is disposed between the motor and the brake mechanism. A…
The motorcycle according to the invention includes a main frame 20b that curves downward, an engine 1 and an air cleaner 26 positionedbelow the main frame 20b and an intake pipe provided below the main frame 20b, between the engine 1 and air cleaner 26. The engine 1 is mounted with an injector 11…
The invention relates to an air intake structure of an engine of a motorcycle and to a motorcycle to which such an air intake structure is mounted. The invention aims to improve the construction of the air intake structure and of the motorcycle. The invention proposes an air intake structure for an…
The invention provides a power unit for small-size vehicles which covers many pa
Motorcycle, especially scooter type vehicle, with swinging type engine unit comprising an internal combustion engine with a throttle body, a suction piston mounted on said throttle body and projecting therefrom, wherein a fuel injector and an intake air pressure sensor are provided within a range…
A scooter type vehicle comprises: a unit swing type engine provided with an engine body having a cylinder assembly forward inclined in a horizontal direction and having a central axis arranged along a longitudinal direction of a vehicle body and a transmission case rearward extending from one side…