Abstract:
An off-road vehicle having a belt type continuously variable transmission and an air intake path. A four cycle type engine includes a crank case and a cylinder extending upward from the crank case. A belt type continuously variable transmission is provided on one end of the crank case in a vehicle width direction. A belt chamber is formed inside a transmission case for housing the belt type continuously variable transmission. A part of the transmission case in front of a rear end of the cylinder is connected to an intake path for leading air to the belt chamber. The intake path extends upward from the transmission case.
Abstract:
A motorcycle having a belt type CVT and an engine unit in which an axial length of a cylinder is restricted. A body frame comprises a down frame extending vertically. The engine unit comprises a four-stroke engine, a belt type CVT, a clutch and a crank case. A cylinder is arranged rearwardly of the down frame with an axis thereof extending vertically. The clutch is provided between a secondary sheave shaft and an output shaft. The crank case is formed with an oil reservoir portion below a crank shaft to store lubricating oil. A rear end of the oil reservoir portion is rearward of a front end of a secondary sheave. An axis of the crank shaft is below an axis of the secondary sheave shaft.
Abstract:
A belt type continuous variable transmission comprises a primary sheave, a secondary sheave, and a belt. The primary sheave comprises a first sheave body, a second sheave body that forms between it and the first sheave body a belt groove, about which a belt is entrained, a plurality of push bodies that slide the second sheave body according to centrifugal forces to change a width of the belt groove, and a plurality of stoppers that restrict movements of the push bodies by contacting with outer surfaces of the push bodies when the second sheave body reaches a position of minimum transmission gear ratio, in which the belt groove is made smallest in width. The stoppers are shaped to accelerate partial wear of the outer surfaces of the push bodies.
Abstract:
Abrasion of a V-belt in a belt type continuously variable transmission accommodated in an engine unit of a motorcycle is suppressed. A V-belt wound around and contacting a primary sheave and a secondary sheave 72 is at least partially formed from a resin. A plurality of grooves aligned at a predetermined pitch in a radial direction are formed on sheave surfaces of the primary and secondary sheaves. The average pitch P(mm) of the grooves is P≦−0.08K×10−3+0.18, where K(Hv) indicates surface hardness of the sheave surfaces.
Abstract:
An engine has a continuously variable transmission in which a drive pulley is attached to an end of a crankshaft. The drive pulley is coupled by a flexible transmitter to a driven pulley. The driven pulley is attached to an end of a transmission shaft. A centrifugal clutch mechanism is axially aligned with the transmission shaft. The centrifugal clutch is positioned inboard of the driven pulley. A case supports the crankshaft and the transmission shaft. The case comprises a first case portion and a second case portion that are joined along a plane that is positioned between the driven pulley and a longitudinal plane that intersects an axis of a cylinder of the engine.
Abstract:
A mobile communication terminal stores a plurality of response messages generated according to respectively different audio compression methods. If the mobile communication terminal is not answered when an incoming call is received, the mobile communication terminal transmits the one of the response messages that has been generated according to the audio compression method designated by a base station.
Abstract:
A clutching system comprises a lever mechanism portion and a clutch mechanism portion. The lever mechanism portion comprises a push lever. The push lever comprises a cam surface. The clutch mechanism portion comprises a push rod. The push rod comprises a cam follower. A Belleville spring functions as a clutch spring. The cam surface and the cam follower are formed such that a lever ratio of the push lever at a pivot start position is larger than a lever ratio of the push lever at a pivot finish position. The Belleville spring is formed such that a force required to move the push lever at the pivot finish position is smaller than a force required to move to the push lever at the pivot start position.
Abstract:
In a motorcycle having a V-belt type continuously variable transmission, a resin washer made of a nylon resin is interposed between a boss fixed to a moving sheave half of a secondary sheave and a spring bearing member. The boss contacts the spring bearing member through the resin washer, whereby the moving sheave half is restricted to a Top position, in which a spacing between it and a stationary sheave half becomes maximum. In this manner, the maximum speed is not changed by exchange of the V-belt, the V-belt does not slip or become considerably abraded or deteriorated, and noise generation is suppressed.
Abstract:
A saddle-type vehicle with improved cooling performance of a V-belt continuously variable transmission and a compact body cover. A motorcycle has a downward-recessed space defined by a body cover in front of a seat. An engine unit is supported by a body frame below the recessed space. The engine unit has a transmission case with a belt chamber for accommodating a V-belt continuously variable transmission. An air chamber communicates with the belt chamber through an air intake duct. The air chamber is disposed above the front part of an arm of the rear arm relative to a middle thereof in a front-rear direction.
Abstract:
A saddle-type vehicle has an engine unit with a continuously variable transmission. The transmission has a primary sheave and a secondary sheave that are connected by a flexible transmitter such as a belt. The primary sheave, the secondary sheave and the belt are positioned in a transmission case. A starting kick shaft is positioned on the same side of the engine unit as the transmission case but the starting kick shaft is positioned outside of a profile of the transmission case when the engine unit is viewed from a lateral side.