Abstract: Provided is a transmission which eliminates torque loss during gear shift and with which the processing of components can be simplified. An axial force is generated in a protrusion by means of a first portion during gear shift from a low gear to a high gear, and when a low-speed transmission gear and a clutch ring separate from each other, a high speed transmission gear and the clutch ring interlock. Since relative movement of the protrusion in a neutral direction is suppressed by means of a first retaining portion during coasting, gear disengagement whereby the transmission gears and the clutch ring separate from each other can be suppressed. Since the first retaining portion can be formed in a first wall when providing a groove portion, an increase in the component processing workload can be suppressed.

Abstract: The invention relates to a drive device, in particular in the form of a pivot drive for material-transferring devices such as mining excavators, comprising an engine, a transmission that is connected to the engine and is lubricated by a transmission lubricant, and a circulation filter device for filtering the transmission lubricant in circulation, wherein the circulation filter device has at least one circulation pump for circulating the transmission lubricant. According to the invention, the circulation pump is integrated into the transmission, wherein the pump wheel of the circulation pump is configured as a peripheral wheel and is arranged for conjoint rotation with a transmission element.

Abstract: A hydraulic power take-off is provided for use with industrial drives that deliver power to industrial equipment. The hydraulic power take-off has a brake disconnect system that can manually release a brake assembly to allow low-effort rotating of the industrial equipment components to facilitate servicing.

Abstract: A method of transmitting power of an inching clutch of a working machine, the power transmitted by the inching clutch is determined and the transmitted power exceeds a predefined inching clutch power, first the rotational speed of the drive engine is reduced and then the torque, that can be transmitted by the inching clutch, is reduced.

Abstract: A transmitter for a synchronizing assembly of a manual transmission has a transmitter disk and at least one clutch disk which is arranged on a side surface of the transmitter disk. The clutch disk and the transmitter disk are fixedly connected together by local welding points. A method for producing a transmitter for a synchronizing assembly of a manual transmission consists of providing a clutch disk and a transmitter disk. Then, the clutch disk and the transmitter disk are fastened together by means of projection welding. Finally, the thus formed assembly is hardened.

Abstract: A method for activating a braking device in the drive train of a vehicle with an automatic gear box, a gear-side parking brake, and a braking system. The vehicle, starting from a parked position with an engaged parking lock, and under the presence of a starting condition, a control apparatus independent from a driver request, controls the braking system to secure against the vehicle rolling away by until the parking lock is released.

Abstract: A transmission system (8) comprising at least one floating gear (14a, 16a, 18a) rotationally mounted upon a first shaft the system comprising a floating gear activation system for controlling torque transfer between the at least one floating gear (14a, 16a, 18a) and the first shaft (10), the gear activation system comprising a first device (28, 30) having a friction interface (28) for frictional engagement with a friction interface (30) disposed on a first side of the at least one floating gear (18a), and a second device (25, 26) having a locking interface (25) for an interpositional engagement with a locking interface (26) disposed on a second side, opposing the first side, of the at least one floating gear (18a), whereby the floating gear (18a) is rotationally coupleable to the first shaft (10) by the friction interface (28/30) and/or the locking interface (25/26).

Abstract: A forward input gear, a backward input gear, a forward clutch, a backward clutch, and a PTO transmission unit for extracting motive power are contiguously arranged in the cover width direction in a case cover, and the PTO transmission unit is constituted by a PTO gear meshed with the forward input gear, and a PTO shaft on which the PTO gear is fixedly disposed in the middle of the shaft, and the PTO shaft is detachably and rotatably supported between a second case and the case cover.

Abstract: A vehicle control device includes a target drive force setting unit configured to set a target drive force based on an operating state, a target speed ratio setting unit configured to set a target speed ratio of a continuously variable transmission to achieve the target drive force and a target torque setting unit configured to set a target torque of a drive source to achieve the target drive force. The target drive force setting unit is configured to set a target drive force reduced in a stepwise manner at the time of upshifting in the continuously variable transmission.

Abstract: A parking brake system that uses a locking device to maintain a parking release condition may include a control lever that may be rotatably connected to the exterior of a transmission, a shift cable that may be rotatably connected to an end of the control lever, the locking device that may be connected to the other end of the shift cable and selectively maintains the parking release condition, and a parking device that includes a piston member in a cylinder and that may be connected to the end of the control lever and uses hydraulic pressure to move the control lever and the shift cable such that the parking release condition may be maintained.

Abstract: A transmission is disclosed for a wheeled vehicle. The transmission has a rotary input (14) to be driven by a rotary power source, e.g. an internal combustion engine. It has a rotary output (16) for driving a vehicle wheel. A transmission unit is coupled between the rotary input and the rotary output to transfer drive between them at a speed ratio which is continuously variable through a range which includes both negative ratios (providing a reversal of rotational direction between the rotary input and the rotary output), positive ratios (in which the rotary input and the rotary output rotate in the same direction), and a geared neutral ratio, in which the rotary output is stationary. In accordance with the invention, the transmission further comprises a brake (20) for braking the rotary output. The brake is provided with a control arrangement adapted to apply it when the speed ratio is set to the geared neutral ratio and to release the brake as the speed ratio is adjusted away from the geared neutral ratio.

Abstract: A system and method for conserving vacuum within a vehicle is described. In one example, vacuum is conserved via limiting volume expansion of a brake booster working chamber.

Abstract: A system and method for conserving vacuum within a vehicle is described. In one example, a vacuum level in a working chamber of a vacuum operated brake booster is controlled so as to limit vacuum consumption.

Abstract: A gear change device for a motor vehicle has a braking member for stopping a rotation of a primary shaft before engagement of a reverse gear. The braking member includes a lever pivotally mounted on a gearbox about a separate axis with respect to axes of the primary and secondary shafts of the gear change device. The braking lever is controlled by an electrically-driven actuator by a pusher member displaceable by the actuator in a direction substantially tangential with respect to the primary shaft, towards an operative position in which it interposes with a wedge-like action between the braking lever and a fixed abutment wall, so as to press the brake pad against a cooperating part which is connected in rotation with the primary shaft.

Abstract: A controller is provided and may monitor a pressure of brake fluid and a state of a transmission of a vehicle. The controller may maintain predetermined brake pressure below a threshold pressure required to prevent movement of the vehicle in response to movement of the transmission into a park state and in response to a drop in brake pressure below the threshold pressure to permit the vehicle to roll with resistance for a predetermined time following the drop of brake pressure below the threshold pressure.

Abstract: A transmission with a countershaft brake includes a countershaft, a positive displacement pump including a pump housing having a chamber with an inlet and an outlet, the pump being driven by the countershaft, and a flow restrictor disposed at or downstream of the chamber outlet, the flow restrictor being adjustable to increase and decrease an amount of flow restriction from, the outlet of the chamber. Torque needed to drive the pump increases with an increasing flow restriction by the flow restrictor. A method for braking a countershaft in a transmission is also provided.

Abstract: A method and system are provided for controlling overspeeding of a vehicle carrying an internal combustion engine having one or more exhaust brake devices controllable to apply braking torque to the engine. The system may be operable determine a desired speed of the vehicle, to determine a road speed of the vehicle, and if the road speed of the vehicle exceeds the desired speed of the vehicle by more than a threshold speed, to determine a target brake torque required to reduce the road speed of the vehicle speed to the desired speed of the vehicle, and to then control the one or more exhaust brake devices to apply the target brake torque to the engine to thereby control the road speed of the vehicle to the desired speed of the vehicle.

Abstract: The work vehicle includes a braking device, a lubricant feeding section, and a controlling section. The controlling section configured to execute a first control in which an amount of the lubricant fed to the braking device is controlled based on a temperature of a rotating member of the braking device. The controlling section sets the amount of the lubricant to a predetermined first feed amount when the braking device is in a braking state, calculates the temperature of the rotating member, and makes a decision in the first control, based on the calculated temperature of the rotating member, to change the amount of the lubricant from the first feed amount to a second feed amount, which is smaller than the first feed amount, when the braking device is switched from the braking state to a non-braking state.

Abstract: A controller is provided and may monitor a pressure of brake fluid and a state of a transmission of a vehicle. The controller may maintain predetermined brake pressure below a threshold pressure required to prevent movement of the vehicle in response to movement of the transmission into a park state and in response to a drop in brake pressure below the threshold pressure to permit the vehicle to roll with resistance for a predetermined time following the drop of brake pressure below the threshold pressure.

Abstract: An electromagnetic inertia brake for a vehicle transmission in a vehicle powertrain has a non-rotatable armature and a brake reaction plate in which a friction brake retarding force is developed on both sides of the brake reaction plate, the brake reaction plate being secured to a transmission torque input shaft, whereby rotary elements of transmission gearing are braked during a transmission shift interval to improve shift quality.

Abstract: A method and a apparatus for operating an automatic synchronized transmission for motor vehicles. The transmission having a countershaft design, with a countershaft parallel to input and an output shafts, which communicate with each other and the countershaft by means of gear wheel pairs. The transmission further having at least one coupling and synchronization device for at least one idler gear, with the aid of which at least one idler gear can be rotationally fixed to a transmission shaft, such that when the motor vehicle is stationary and a starting gear is engaged, torque of the countershaft is not drive-effectively reduced. Thus, ensuring that when the starting gear is engaged, no undesired acceleration of the vehicle occurs.

Abstract: A device for a work vehicle eliminates uncomfortable operation feeling, improves the working efficiency, and reduces thermal load on a clutch and transmission shock. It is determined whether the current travel direction of the vehicle body is a forward travel direction F or a reverse travel direction R based clutch oil pressure of the forward clutch or reverse clutch. Braking force of a brake device is controlled such that the brake device is activated on the conditions that the travel direction position selected by the travel operation lever and the travel direction determined by a travel direction flag are opposite to each other, and the detected vehicle body speed is equal to or greater than a predetermined threshold value.

Abstract: When a vehicle stops, a brake control unit maintains a braking force applied on a wheel by a braking-force application unit for maintaining a halted state. In this state, if a driver depresses the accelerator pedal to execute starting of the vehicle, the braking force is gradually decreased, and the vehicle starts at a speed that accords with a degree of accelerator opening and a gradient of a road on which the vehicle is stopped. When a movement direction at this time is the same as a movement direction intended by the driver, the braking force is decreased to zero for smooth starting. When the movement direction is opposite to the intended movement direction, the braking force is increased to control the movement in the opposite direction, such that the movement changes from the opposite direction to the same direction, and finally, smooth starting in the desired direction is executed.

Abstract: A motor vehicle transmission device is described. The transmission has an actuating unit, used for canceling a tooth-on-tooth position of coupling elements, wherein the actuating unit actuates a transmission brake when the tooth-on-tooth position is detected. The transmission also has a second actuating unit for actuating a disconnect clutch, the second actuating unit actuating the disconnect clutch when the tooth-on-tooth position is detected. The actuating unit for actuating the transmission brake and the second actuating unit for actuating the disconnect clutch are actuated in coordination with one another, in order to cancel the tooth-on-tooth position.

Abstract: During a period wherein a manual shift valve moves to a P gear range position after issuance of a D-to-P instruction instructing that a vehicle be stopped, an interior of an automatic transmission is interlocked. Specifically, the interior of the automatic transmission is interlocked by, in addition to engagement of a first clutch serving as a friction engagement element of a first gear range of the automatic transmission, by engaging a second brake causing an engine brake to act and a third brake forming a reverse gear range, and therefore, motion of the vehicle is prevented in a period between issuance of the P instruction instructing a vehicle stop operation, and actual shifting to the P gear range.

Abstract: In one embodiment, a hybrid propulsion system for a passenger vehicle is provided. The system comprises at least one drive wheel; a first motor coupled to the drive wheel; a second motor; a transmission including a first end coupled to the drive wheel and a second end coupled to the second motor; and a control system configured to control operation of the first and second motor to each provide vehicle braking torque, wherein transmission state is adjusted in response to an amount of braking torque provided by the first motor and an amount of braking torque provided by the second motor.

Abstract: A ZTR lawnmower having first and second drive wheels and first and second control levers to control the direction and speed of rotation of the first and second drive wheels. The lawnmower further includes a park brake system operatively interconnected with at least one of the drive wheels, and an interlock mechanism interfacing with the parking system. The park brake interlock mechanism includes a parking brake handle movable between an engaged position and a disengaged position to cause the park brake system to respectively resist and not resist rotation of the at least one drive wheel.

Abstract: A vehicle transmission apparatus includes an engine generating a driving force; a transmission having, therein, at least one input shaft being connectable to the engine and an output shaft connected to a drive wheel, the transmission being capable of establishing, therein, one of plural shift stages in response to a vehicle driving condition; at least one clutch mechanism for establishing and interrupting transmission of a driving force of the engine to the transmission, the at least one clutch mechanism being capable of being connected to the at least one input shaft; and a braking means for applying a braking force to the engine.

Abstract: The invention relates to a hydrostatic drive (1) and to a method of braking a hydrostatic drive (1). In the hydrostatic drive (1), in a closed circuit a hydraulic pump (3) is connected by a first and a second working line (11, 12) to a hydraulic motor (4). The hydrostatic drive (1) comprises a brake actuation device (37) as well as at least one pressure relief valve (26, 30), which is connected to the working line disposed downstream of the hydraulic motor (4). The hydraulic pump (3) upon detection of an actuation of the brake actuation device (37) is adjustable to a braking delivery rate. The hydraulic motor (4) is adjusted in dependence upon the actuating intensity of the brake actuation device (37) in the direction of a larger absorption volume if the actuating intensity of the brake actuation device (37) increases.

Abstract: A motor vehicle includes a drive train having a drive unit, a gearbox having a first gearbox input shaft and a second gearbox input shaft, and a clutch having a first clutch device which is associated with the first gearbox input shaft, and a second clutch device which is associated with the second gearbox input shaft, for transferring torque between the drive unit and the gearbox. The first and second clutch devices are plate clutches to which an operating fluid, such as a cooling oil, is supplied to operate the same. The gearbox is associated with an actuator device and a control device for controlling the actuator device, the arrangement of which enables the gears associated with the first and second gearbox input shafts to be engaged and disengaged. The control device is designed such that at least one gear is automatically engaged by the actuator device, as a result of the clutch release of the vehicle.

Abstract: A vehicle stability control system includes a controller configured to deactivate a traction control clutch, provide a reverse torque across the traction control clutch, and apply a braking torque according to a vehicle stability control strategy. The reverse torque across the traction control clutch may be provided by reducing an engine torque output, applying a pulse of brake pressure, or other means.

Abstract: The present invention provides a running control device for an industrial vehicle which generates no speed change shock when the traveling direction is switched to the opposite direction by the forward-reverse selection member during the running of the vehicle.

Abstract: A P-ECU determines whether or not energization to an actuator is shut off when a shift-range switch instruction is unissued. If energization to the actuator is shut off, the P-ECU obtains a current rotational position of the actuator according to a count value obtained by an encoder. If a difference between a target rotational position and the current rotational position exceeds a predetermined amount, positional correction control is exercised.

Abstract: A shift interlock mechanism that requires an operator to press a brake mechanism before changing transmission gears to prevent extra motion in the transmission, insuring a smoother shifting operation. The shift interlock mechanism with a brake arm that moves in a first direction to stop motion of at least a first ground engaging drive wheel and a shift arm that moves in a second direction to change movement of a vehicle.

Abstract: Method and apparatus for reversing the driving direction of a vehicle in motion, in which a movement of a gear selector to a position that indicates the new intended driving direction is detected, and the vehicle's driving brakes are applied depending upon the depression of the vehicle's gas pedal.

Abstract: The invention relates to a parking brake system for transmissions of motor vehicle, especially for an automatic transmission and an automated selector transmission, having one parking brake for blocking or releasing the transmission according to actuation signals of a control device, especially by a pawl engaging and disengaging in a parking brake gear connected with the output of the transmission, an electric operative connection between the control device in the interior of the motor vehicle and the parking brake, a spring accumulator (9) for actuating the parking brake and a pressure-controlled release device of the parking brake. It is proposed to load the release device (10) when releasing the parking brake with a negative pressure independent of the transmission and which is preferably taken from the suction system (15) of the internal combustion engine of the motor vehicle or from a negative pressure brake force booster of the motor vehicle.

Abstract: A system for a motor vehicle has a motor vehicle gearbox by means of which a reversal of the direction of travel can be initiated, a vehicle brake unit which is separate from the motor vehicle gearbox, and a control unit. When there is a reversal of the direction of travel from at least one first direction into a second direction when there is still a positive vehicle velocity in the first direction, the control unit generates a braking torque which reduces the vehicle velocity, by means of an actuation unit and by means of the vehicle brake unit. The actual direction of travel of the motor vehicle is determined here by means of a sensor unit.

Abstract: A gearshift unit (1) for electronic transmission control in motor vehicles including a gearshift lever housing (4) and a gearshift lever (5) moveable in relation to the gearshift lever housing (4), the gearshift lever being rotatable about a main pivot axis (6) of the gearshift lever (5) within an active position range for active gearshift positions and a neutral position.

Abstract: In a method for operating a motor vehicle having an automatic transmission in the time of a selection action for a driving-mode range, first a driver's requirement for a change in the driving-mode range is transferred to a selection device, a change signal is then generated by the selection device, the change signal is subsequently transferred to a control unit, and, finally, a change in the driving-mode range of the automatic transmission is brought about by the control unit according to the change signal. In the time of the selection action for the driving-mode range, at least one braking device is actuated in an automated manner by the or a control unit. Drive-train oscillations may be reduced or avoided by the method.

Abstract: A control apparatus of an automated manual transmission includes an input shaft provided with a plurality of drive gears, an output shaft provided with a plurality of driven gears engaged with the drive gears, and a reverse idler gear engaging with gears for backward movement respectively provided at the input and output sides when a backward moving stage is selected, as a mechanism for backward moving. Further, there is provided with a bypass clutch capable of selectively transmitting or shutting a power of the input shaft to the output shaft. When the backward moving stage is selected (S1), the bypass clutch is engaged (S3) so as to stop a rotation of the input shaft (S4), and thereafter, the reverse idler gear and the backward moving gears are engaged with each other (S5). Thus, a shift operation to a reverse mode can be securely and smoothly executed for a short time.

Abstract: An executed time of a backward slipping moderation control is counted by a timer, and after a predetermined period of time is elapsed, the control is terminated. Upon the termination of the control, a control of operation of a brake actuator is executed so that a wheel cylinder pressure is decreased with a gentle slope in comparison with a normal operation of the brake actuator for terminating the control. Where the backward slipping moderation control is executed by controlling a brake fluid pressure of the brake actuator, an acceleration &agr; of a vehicle is estimated. If the acceleration is larger than a predetermined value, a target pressure P is increased, thus generating a relatively large braking force.

Abstract: A park interlock device for a land-based vehicle including a driver-selectable shifter for selecting a respective one of the propulsion modes of the vehicle is provided. The device includes a generally elongated, hollowed body. The device further includes an actuating rod configured to be axially disposed in said hollowed body. The actuating rod is responsive to increments in linear motion produced when the shifter is set to a new propulsion mode. A detent assembly is configured to securely engage into a respective one of a plurality of notches in correspondence with a selected propulsion mode of the vehicle. A plunger is disposed at one end of the actuating rod.

Abstract: A control unit for the gear or shift program selection of an automatic transmission of a motor vehicle is presented, which has a emergency release mechanism, by which a parking brake of the motor vehicle transmission can be released by means of an operating device that can be actuated by the driver, with a housing (3) and a selector lever (1), which can be brought into at least two end positions, in which [control unit] the operating device of the emergency release mechanism is an integral part of the control unit, and in which the operating device has a detachable stop element (7), which is secured in a mount (9) of the control unit by means of a coded release mechanism (15) and which acts as a movement limitation for the release movement of the parking brake by the operating device of the emergency release mechanism in the non-actuated state.

Abstract: A system for a motor vehicle has a motor vehicle gearbox by means of which a reversal of the direction of travel can be initiated, a vehicle brake unit which is separate from the motor vehicle gearbox, and a control unit. When there is a reversal of the direction of travel from at least one first direction into a second direction when there is still a positive vehicle velocity in the first direction, the control unit generates a braking torque which reduces the vehicle velocity, by means of an actuation unit and by means of the vehicle brake unit. The actual direction of travel of the motor vehicle is determined here by means of a sensor unit.

Abstract: Tracked vehicle with at least one engine and one gear-change and steering transmission and with lateral intermediate transmissions as final drives for track sprockets on both side of the drive. Each lateral intermediate transmissions is shiftable between at least two gears.

Abstract: The invention relates to a parking brake system for a gearbox of a motor vehicle. An electric engagement is provided between the operating device in the interior of the motor vehicle and the parking brake. The inventive system comprises a spring-type cylinder (9) for activating the parking brake and a pressure-controlled release device of the parking brake. According to the invention, the release device (10) is impinged upon a gearbox-independent negative pressure when the parking brake is released. Said pressure is preferably taken from the suction system (15) of the internal combustion engine pertaining to the motor vehicle or from a negative pressure brake booster pertaining to the motor vehicle.

Abstract: A vehicle auxiliary braking system is provided to accomplish a braking effect similar to engine braking inexpensively, to extend the life of the brakes, and to reduce the work cycle time in order to improve work efficiency. The system has a centrifugal sensor 20, an accelerator sensor 21, and a braking clutch engaging means that includes a braking hydraulic circuit 22. The centrifugal sensor 20 detects that the vehicle is traveling when the vehicle is moving at or above a prescribed speed. Accelerator sensor 21 detects when the depression amount of the accelerator pedal 6 is at or below a prescribed amount. The braking clutch engaging means engages the clutch that corresponds to the opposite travel direction when the vehicle is traveling at or above the prescribed speed and the accelerator depression amount is at or below the prescribed depression amount.

Abstract: A parking lock device comprises a parking lock mechanism (12) which locks an output shaft (1A) of a vehicle automatic transmission (1) when a shift lever (18) is changed over to a parking range, and an automatic brake device (14) which brakes the vehicle. When the shift lever (18) is changed over to the parking range at a vehicle speed is not less than a predetermined vehicle speed VSP1, a control unit (15) first operates the automatic brake device (14) to decelerate the vehicle and then operates the parking lock mechanism (12) after the vehicle speed has dropped to less than the predetermined vehicle speed VSP1. By this deceleration, the shock given to the vehicle by locking the output shaft (1A) while the vehicle is running is suppressed. The load of the parking lock mechanism due to the locking of the output shaft (1A) is also alleviated.

Abstract: A transmission having an integral lubrication (stem for delivering lubrication fluid to transmission components is provided. The lubrication system has a housing with a sump portion for holding the fluid. The lubrication system also includes a pump assembly with inlet and outlet chambers wherein the pump assembly moves the fluid from the inlet chamber to the outlet chamber. The housing has a collection system with an inlet passageway which interconnects the inlet chamber and the sump to provide fluid communication between them. The housing has a distribution system with a plurality of fluid distribution ports for delivering the fluid to the transmission components. The distribution system interconnects said distribution ports and said outlet chamber to provide fluid communication between them. First, second, and third passageways are integrally formed within various portions of the housing and deliver the fluid to bearing portions of the shafts and to the transmission gears.

Abstract: The invention relates to an indexing gear (21) for a synchronizing device (1) for a geared speed change transmission installed in motor vehicles to which a coupling body (22) as well as a friction ring (23) are allocated. In accordance with the invention, the indexing gear (21), the coupling body (22) as well as the friction ring (23) are constructed as component parts which can be prefabricated, which are joined in a rotatably fixed manner.