Abstract:
A method for controlling a pneumatic actuator (1) of a transmission having at least one sealing element (6, 7) that is arranged between two elements (2, 3) of the actuator (1) that move relative to one another, and within a specifiable operating temperature range in which a leakproofness of the actuator (1) is ensured. The pneumatic actuator is acted upon with compressed air from an air supply system for actuating a transmission component. When a temperature of the actuator (1) is below a glass transition temperature of the at least one sealing element (6, 7), the actuator (1) is acted upon with pre-heated compressed air from the air supply system to warm up the at least one sealing element (6, 7) above the glass transition temperature.
Abstract:
The present device is an improved clutch system that conveys rotational energy from a power source to the gearbox input shaft of a motorcycle. A clutch basket is mechanically coupled to the power source and slidably engaged to pronged clutch drive plates, which are frictionally engaged to splined steel driven plates. Pressurized air moves a piston against a pressure plate, causing the clutch hub and splined steel driven plates to engage. The rotating splined steel driven plates will then rotate the clutch hub to convey rotational energy to the gearbox input shaft of the motorcycle.
Abstract:
A method of controlling an automated friction clutch arranged as a starting and shifting clutch in a vehicle between an engine driveshaft and an input shaft of a transmission. The clutch can be engaged passively by a contact pressure spring and disengaged and engaged by a pneumatic control cylinder. The air inlet and outlet valves are opened in a sustained-pulse operating mode, over a duration ΔtV calculated as the quotient of air mass difference ΔmK between the nominal mass mK—soll present in the pressure chamber of the control cylinder when the control piston is in its nominal position xK—soll and the actual air mass mK—ist present when the control piston is in its actual position xK—ist (ΔmK=mK—soll−mK—ist) and air mass flow mv passing through the control valve concerned, which depends on the existing pressure situation and the flow characteristics of the open inlet or air outlet valve (ΔtV=ΔmK/mv).
Abstract:
A coupling device of a motor vehicle with a clutch arranged in the force flow between a drive motor and a transmission and a dedicated servo-assisted control mechanism. The clutch is designed by way of a pressing spring as a passively lockable and via a clutch release sleeve disengageable and insertable dry friction coupling and the control mechanism includes an operative primary drive between a clutch pedal and the clutch release sleeve and a pneumatically operative servo drive with a pneumatic actuator ordered immediately to the clutch release sleeve and with a control valve controllable by the clutch pedal.
Abstract:
A coupling device of a motor vehicle with a clutch arranged in the force flow between a drive motor and a transmission and a dedicated servo-assisted control mechanism. The clutch is designed by way of a pressing spring as a passively lockable and via a clutch release sleeve disengageable and insertable dry friction coupling and the control mechanism includes an operative primary drive between a clutch pedal and the clutch release sleeve and a pneumatically operative servo drive with a pneumatic actuator ordered immediately to the clutch release sleeve and with a control valve controllable by the clutch pedal.
Abstract:
An electro-pneumatic control system for a motorcycle transmission. A pneumatic clutch cylinder used to disengage the clutch by pulling in a clutch lever via a clutch cylinder rod. Optionally, manual override of the clutch control may be provided for by linking the clutch lever to a clutch cable by a through rod and slip device. To change gear a pneumatic gear change cylinder, attached to the gear change lever, push-pulls lever to upshift and downshift transmission. The system is equipped with launch control that allows the motorcycle to start from a standstill.
Abstract:
A clutch assembly (20) for a fan drive system (12) of an engine (14) includes a translatable clutch housing (30) that is coupled to a fan (16). A rotating shaft (32) is coupled to a drive pulley (22) of the engine (14). A liner (34) resides between and is engageable with the translatable clutch housing (30) and the rotating shaft (32). A clutch spring (35) engages the translatable clutch housing (30) with the rotating shaft (32). A spring carrier (42) retains a portion of the clutch spring (35) and comprises a passage (46) for fluid pressure adjustment within a clutch spring area (38) of the clutch assembly (20).
Abstract:
An electro-pneumatic control system for a motorcycle transmission. A pneumatic clutch cylinder used to disengage the clutch by pulling in a clutch lever via a clutch cylinder rod. Optionally, manual override of the clutch control may be provided for by linking the clutch lever to a clutch cable by a through rod and slip device. To change gear a pneumatic gear change cylinder, attached to the gear change lever, push-pulls lever to upshift and downshift transmission. The system is equipped with launch control that allows the motorcycle to start from a standstill.
Abstract:
The power train of a motor vehicle employs an electronic control unit which selects the extent of engagement of the friction clutch between the engine and the transmission by way of an electronic or fluid-operated actuator. The throttle valve for the engine is adjustable by the control unit and/or by the accelerator pedal to ensure predictable starting of the motor vehicle from standstill on a road surface having a pronounced slope and/or when the motor vehicle carries a heavy load.
Abstract:
The friction clutch comprises a clutch disk arrangement which can be brought into frictional engagement with associated friction surfaces by the action of a movably mounted thrust plate arrangement. The actuation device includes a pressure medium force cylinder arrangement by means of which the friction clutch can be actuated by an actuating member; a measuring arrangement detects an actual actuation. A control/regulating valve arrangement is connected with a pressure medium source, with a pressure compensation opening or a pressure compensation reservoir and with the pressure medium force cylinder arrangement, by means of which control/regulating valve arrangement the pressure medium force cylinder arrangement can be actuated depending on the actual actuation and on a reference actuation which can be predetermined. According to one aspect of the invention the measuring arrangement detects an adjusting path of at least one thrust plate of the thrust plate arrangement as actual actuation. According to another aspect, an energy accumulator acting so as to produce the frictional engagement has an at least approximately linear actuation-force characteristic. According to another aspect, the pressure medium force cylinder arrangement is coupled or can be coupled with the thrust plate arrangement so that a contact pressing force generated by the pressure medium force cylinder arrangement and is transmitted to the thrust plate arrangement produces the frictional engagement.