Abstract:
An electronic clutch control apparatus is provided for a vehicle having a clutch assembly and a clutch lever operatively associated with the clutch assembly. The electronic clutch control apparatus includes an actuator for driving a clutch assembly, an operation amount sensor for sensing an operation amount of a clutch lever, an electronic control unit for controlling the operation of the actuator based on the detected operation amount received from the operation amount sensor, and a feedback unit for applying an operation reaction force to the clutch lever. The feedback unit includes a plurality of springs having different spring constants. The feedback unit is configured such that when the clutch lever is operated in an operation amount increasing direction thereof, the operational reactive elastic forces of the plural springs are sequentially applied to the clutch lever.
Abstract:
A cam face 81 and a cam face 181 are formed in such a manner that an angular velocity ω represented by the following equation increases when a parameter R increases and the angular velocity ω decreases when the parameter R decreases, ω2=(1/m)·[F(tan α+tan β)/R], where the mass of the centrifugal weight (41) is m, the revolution radius that is the distance from the rotation center (0) of the centrifugal weight (41) to the center of gravity of the centrifugal weight (41) is R, the angle formed by a radial line (L0) and a tangent line (L1) of a point of the cam face (81) being in contact with the centrifugal weight (41) is α, the angle formed by a radial line (L0) and a tangent line (L2) of a point in the cam face (181) being in contact with the centrifugal weight (41) is β, and the urging force of a Belleville spring that urges a roller retainer (78) is F.
Abstract:
A motorcycle clutch for a drive connection between an engine and a transmission of a motorcycle is provided, and is some embodiments includes a manually operable clutch lever, engaging inner and outer disks, and disengaging means operable by means of the clutch lever for a pressure body which is spring-loaded by at least one clutch spring assembly for pressurization of the inner and outer disks, wherein a servo mechanism for reducing the operating force of the clutch lever is provided, the servo mechanism being effectively connected to the intake section of the engine and utilizing the negative intake pressure in the intake section to build up a servo force acting against the direction of the spring load of the clutch spring assembly.
Abstract:
Disclosed herein is a pulley cover assembly for a motorcycle transmission which can securely support a pulley to minimize an shivering phenomenon thereof caused when a load is applied to the rotating pulley, thereby attenuating noise due to the shivering phenomenon and improving a rotational performance of the pulley. Further, the pulley cover assembly can ensure convenient clutch operation through the use of a hydraulic clutch operating mechanism. The clutch operating mechanism includes a hydraulic casing integrally formed at the pulley cover and having a hydraulic oil inlet passage and a hydraulic oil outlet passage, and a piston disposed inside the hydraulic casing while being fixed to an end of the clutch rod of the motorcycle transmission. Such a clutch operating mechanism is adapted to supply hydraulic power into the hydraulic casing to permit the piston to linearly move the clutch rod by a predetermined distance. The pulley cover assembly comprises a pulley supporting means positioned at one side of the pulley opposite to a transmission cover to permit the pulley to be securely supported at both ends thereof by both the pulley supporting means and the transmission cover.
Abstract:
An automatic change gear control device for a motorcycle having a manually operated clutch operation member achieves both easy clutch operation and secure freedom of drive. A clutch is connected and disconnected to change gears in a transmission capable of freely changing gears in plural stages. A clutch actuator drives the clutch. A clutch operation unit has a manually-operated clutch lever. An ECU controls the clutch actuator based on driver operation of the clutch lever.
Abstract:
A clutch-manipulation assist mechanism of a vehicle clutch mechanism is capable of disconnecting power of an engine and is provided to a power transmission path which transmits the power of the engine to a rear wheel. The clutch-manipulation assist mechanism includes a push rod member which is arranged near the clutch mechanism and which is movable in the axial direction interlockingly with a power cutoff of the clutch mechanism due to the manipulation of a clutch lever by a rider. An axial movement of the push rod member is assisted by an actuator in response to a detection of the clutch lever manipulation by the rider using a stroke sensor, thus reducing a manipulation force of the clutch lever. A detection lug of the stroke sensor detects a movement quantity of a shaft end of the push rod member.
Abstract:
A clutch actuator comprises a clutch motor comprising motor shaft. The clutch actuator also comprises a worm shaft that is spline connected to the motor shaft. The rotary motion of the worm shaft 103 is transferred to a worm wheel 105, which is engaged with the worm shaft 103. The worm shaft 103 has a threaded portion 103c. The threaded portion 103c comprises multiple threads.
Abstract:
A clutch engagement control system 100 for engaging a friction clutch 1 by means of an actuator 3, can comprise a magnetostrictive sensor 71 for detecting the state of power transmission over the friction clutch 1, and can be configured to engage the friction clutch 1 at first engagement velocity until the magnetostrictive sensor 71 detects the start of the power transmission, and to change the engaging velocity to second engagement velocity lower than the first engagement velocity when the magnetostrictive sensor 71 detects the start of the power transmission such that the friction clutch 1 starts transmitting power after no power transmitted over the friction clutch 1, and the power transmissibility is gradually enhanced.
Abstract:
A device for transmitting movement to a fan for cooling the coolant in a motor vehicle has a shaft on which the fan is mounted by means of an idle support, and a first electromagnetic clutch, engagement of which causes rotation of the fan at a speed equal to that of the shaft. A second clutch causes rotation of the fan at a speed lower than that of the shaft or at zero speed. The second clutch has an actuator coaxially displaceable, in both directions, with respect to the shaft, but idle upon rotation of the latter. A coupling which is coaxially locked in rotation with the shaft is connected to the actuator and is suitable for engagement with the rotor of the second clutch.
Abstract:
A hydraulic release mechanism for automobile clutches comprising a housing open at one end and a bearing. The bearing comprises a rotating race ring adapted to be connected to the operating member of the clutch, a non-rotating race ring and a plurality of roller elements located therebetween. The non-rotating race ring is slidably arranged with respect to the housing, and seal means is arranged on the non-rotating race ring between it and the surface of the housing to enclose the housing to form a pressure chamber while permitting the race ring to move on introduction of pressurized fluid into the housing.