Abstract: A carabiner includes a body having a first arm extending from the body and a second arm extending from the body, a first gate pivotally coupled to the body adjacent the first arm for movement relative to the first arm, and a second gate pivotally coupled to the body adjacent the second arm for movement relative to the second arm. The carabiner also includes a blocking member supported by the body. The blocking member is movable between a first position, in which the first and the second gates are movable relative to the first and second arms, a second position, in which the first gate is inhibited from moving relative to the first arm and the second gate is movable relative to the second arm, and a third position, in which the first and the second gates are inhibited from moving relative to the first and second arms.

Abstract: A process for manufacturing a ball and socket joint and a joint manufactured according to that process are provided for a simple manufacture of a completely assembled ball and socket joint with a low torque and overturning moment. The joint housing is manufactured in an injection or casting process, in which the joint ball with the bearing shell placed on it is surrounded by a metallic material or a plastic. The joint shell is provided with a bulge, which behaves elastically with respect to the pressure acting during the injection or casting process and arches slightly outwardly after the conclusion of the injection or casting process. It is achieved as a result that the joint shell does not lie over its entire area on the joint ball after the injection or casting process.

Abstract: A hydrodynamic thrust bearing has an annular plate, a plurality of bearing foils, and a plurality of bumper foils. The annular plate has a first face and a second face opposite the first face. The bearing foils have an arcuate shape and are joined to the first face of the annular plate. The bumper foils have an arcuate and corrugated shape and are joined to the second face of the annular plate. A method of making a hydrodynamic thrust bearing includes joining the bearing and bumper foils to the annular plate with integrally-formed spacers in which each bumper foil corresponds to a bearing foil.

Abstract: A fluid bearing motor. The fluid bearing motor includes a stationary sleeve, a backiron, a hub coupled to the backiron, and a gap forming component. The hub is operable to rotate with respect to the stationary sleeve. The gap forming component is attached to the stationary sleeve and forms a gap between the stationary sleeve and the backiron. The size of the gap dynamically changes in response to changes in temperature.

Abstract: A bearing arrangement comprises: first and second thrust bearings, each including an inner race which is disposed on a shaft and an outer race which is supported by at least one resilient element. Applying a shaft thrust load elastically deforms the resilient elements so as to axially displace the respective outer races in order that the thrust load is shared between the first and second thrust bearings.

Abstract: A bearing for a gas turbine engine may comprise a squeeze film damper. A bearing housing may comprise a roughened surface. The roughened surface may increase friction between the bearing housing and the oil in the squeeze film damper. The increased friction may increase the damping force in the squeeze film damper. The increased damping force may prevent oil inertia, and prevent resonant vibrations.

Abstract: There is provided a magnetic bearing drive circuit driven from a pair of Direct Current (DC) link voltage rails, said magnetic bearing drive circuit having at least one amplifier providing an output PWM drive signal for driving a magnetic bearing winding, said output PWM drive signal being provided to the magnetic bearing winding through a plurality of drive signal rails, said magnetic bearing drive circuit comprising a pair of voltage offset devices coupled to the DC link voltage rails and arranged to provide a pair of offset catcher voltage rails from the DC link voltage rails, and primary clamping means coupled between each offset catcher voltage rail and a respective one of the drive signal rails.

Abstract: A slide bearing device, includes an inner ring-shaped internal element, an intermediate element that encloses the internal element in the radial direction of the slide bearing device and is at least approximately ring-shaped, and a ring-shaped external element that encloses the intermediate element in the radial direction. The internal element is rotatable relative to the external element, and the intermediate element is rotatable relative to the internal element and relative to the external element. In a default state of the slide bearing device, the internal element is arranged at a distance to the intermediate element in the radial direction of the slide bearing device, and the intermediate element is arranged at a distance to the external element. The internal element and the external element are made of a metallic material and the intermediate element with a non-metallic material.

Abstract: Provided is a slide bearing with which friction-reducing effects can be obtained and the total volume of effluent oil can be limited. A slide bearing in which halved members made by dividing a cylinder in two in a direction parallel to the axial are disposed vertically, wherein narrow grooves are provided at the ends of the slide bearing in the axial direction, the narrow grooves extending in the circumferential direction from the mating surface on the downstream side of the rotation direction to a specified bearing angle is an angle rotated in the range of ?0 degree to ?90 degrees from the mating surface on the downstream side in the rotation direction (bearing angle of 180 degrees) towards the upstream side in the rotation direction. In other words, the bearing angle is the range of 180 degrees to 270 degrees.

Abstract: A positive pressure generating mechanism comprising a positive pressure generating groove is provided to a high-pressure side of one of two sliding surfaces that slide relative to each other in a pair of sliding components, and a negative pressure generating mechanism comprising a negative pressure generating groove is provided to a low-pressure side. The positive pressure generating groove and negative pressure generating groove are communicated with a high-pressure fluid side and separated from a low-pressure fluid side by a seal surface.

Abstract: A ball bearing (rolling bearing) containing lubricant sealed therein is provided between a shaft and a sleeve. A labyrinth seal (seal gap) is provided at an end portion of the shaft or the sleeve in the axial direction. A permanent magnet is disposed such that a magnetic pole is located in proximity to the labyrinth seal. A magnetic seal effect that utilizes diamagnetism acting on evaporating oil is provided at the labyrinth seal.

Abstract: A hydraulic power unit comprising a rear face and a front face spaced from one another includes an air inlet configured to receive air into the unit, and an air outlet configured to expel the air received into the unit. The hydraulic power unit further includes controls configured to provide a user interface. The controls and the air inlet are located on the front face, and the air outlet is located on the rear face. A coupler for a hydraulic power unit, configured to couple a drive shaft of the unit to a pump shaft of a hydraulic pump, includes a first aperture configured to receive the drive shaft, a second aperture configured to receive the pump shaft, and a hub configured to be received in a fan. The hub is configured to fixedly couple to the fan so that the fan is driven by the drive shaft.

Abstract: A tube yoke for a driveshaft assembly includes a tube seat. The tube seat comprises a base, a wall, and a plurality of stiffening ribs. The stiffening ribs extend between an inner surface of the base and an end surface of the wall. Each stiffening rib comprises an outer end portion which is attached to a middle portion and a pair of side portions. The tube yoke also includes a pair of lugs outwardly projecting from the tube seat. Each lug has a crosshole and the crossholes are aligned so as to have a common centerline. Each stiffening rib is oriented at an acute angle with respect to the common centerline of the crossholes and each stiffening rib gradually decreases in thickness from the side portions to the outer end portion and from the middle portion to the outer end portion.

Abstract: A sealing boot assembly comprises a flexible boot having a first end in sealing engagement with an outer surface of a shaft to define an inner chamber therein. A venting orifice extends from the inner chamber through the flexible boot to ambient and a moisture-blocking, vapor-breathable membrane is disposed across the venting orifice between the inner chamber and ambient to vent gas from the inner chamber during high temperature operation of the shaft and to allow air to returns to the inner chamber upon cooling thereof.

Abstract: A torque limiter limits transmission of torque between an input shaft an output shaft. The torque limiter may be incorporated in a geared rotary actuator for actuating an aircraft control surface. The torque limiter is responsive to output torque associated with the output shaft instead of input torque associated with the input shaft. The torque limiter includes a structural ground and a gear assembly for transmitting rotational motion of the input shaft to the output shaft. The gear assembly includes a reference gear coupled to the structural ground such that movement of the reference gear relative to the structural ground is dependent upon an output torque at the output shaft. The reference gear is stationary relative to the structural ground when the output torque is below an output torque limit, and the reference gear moves relative the structural ground when the output torque exceeds the output torque limit.

Abstract: A clutch device transmits rotational energy between a drive input and a drive output, in particular between an electric actuating unit and an actuating element of an adjustable motor vehicle exterior mirror. The clutch device permits a transmission of a load torque MR from the electric actuating unit to the actuating element in both directions, and in the event of an overload torque greater than a predefined threshold torque MK, automatically permits a relative rotation between the electric actuating unit and the actuating element. Furthermore, the clutch device is designed such that, in the event of a torque direction reversal, no load torque is transmitted over a predetermined free-travel angle (?).

Abstract: A claw shifting element for a motor vehicle transmission includes a sliding sleeve that is axially fixed in its two end positions by frictional locking.

Abstract: A wedge clutch, including: an inner and outer hubs; a wedge element including separate circumferentially disposed segments radially located between the inner and outer hubs; an outer ring; and first and second displacement elements. The ring is radially located between the wedge element and the outer hub and is non-rotatably connected to the segments and urges the segments radially inward into contact with the inner hub. For a closed mode, the first displacement element is arranged to urge the wedge element in a first axial direction, parallel to an axis of rotation for the wedge clutch, to non-rotatably connect the inner and outer hubs, the wedge element, and the outer ring. For an open mode, the second displacement element is arranged to displace the wedge element in a second axial direction, opposite the first axial direction, to enable relative rotation between the inner and outer hubs.

Abstract: A bi-directional actuator for a motor vehicle drive train is provided. The actuator includes a first axially stationary part; a second axially stationary part; an activation part between the first axially stationary part and the second axially stationary part, the activation part being axially movable to alternately contact the first axially stationary part and the second axially stationary part; and an actuation part engaging the first axially stationary part and the second axially stationary part, contact between the activation part and the first axially stationary part causing the first axially stationary part to force the actuation part in a first axial direction, contact between the activation part and the second axially stationary part causing the second axially stationary part to force the actuation part in a second axial direction.

Abstract: A clutch mechanism for coupling and decoupling a motor to a rack is disclosed herein. The clutch mechanism having: a clutch lever pivotally mounted to an axis for movement from a first position to a second position; a cam gear having a cam surface, wherein rotational movement of the cam gear causes the cam surface to move the clutch lever from the first position to the second position; and a gear train configured to cause linear movement of the rack in response to rotational movement of the motor, wherein movement of the clutch lever from the first position to the second position disconnects a pair of gears of the gear train.

Abstract: A device that employs shear forces to transmit energy includes an outer housing assembly, a disk, and a reservoir with a working fluid. The disk is received in and rotatable relative to the outer housing assembly. A working cavity is formed between a rotor portion of the disk and the outer housing assembly into which the working fluid is received to create shear forces. A plurality of flow altering structures are disposed on the outer housing assembly and are configured to reduce a thickness of a boundary layer of the working fluid in the working cavity in areas that are local to the flow altering structures.

Abstract: A dry clutch control apparatus may include a vibration component extractor configured to generate a virtual target input shaft speed from a wheel speed and detect a vibration component based on a difference between an actually measured input shaft speed and the virtual target input shaft speed; and a feedback controller configured to feedback-apply as an anti judder control input a clutch control torque corresponding to only an amplitude in any one direction from a center of an amplitude of the vibration component recognized in the vibration component extractor.

Abstract: An irreversible mechanism is provided with an input shaft that receives input of rotational drive force, an output shaft that receives transmission of torque from the input shaft, a ball ramp part that generates radial force when load torque is applied to the output shaft, a brake lining that receives the radial force from the ball ramp part, a brake drum that the brake lining is pressed against when the brake lining receives the radial force from the ball ramp part, and a housing that accommodates the input shaft, the output shaft, the ball ramp part, the brake lining and the brake drum inside.

Abstract: An assembly device for a parking cable may include: a driving cable part having one end connected to a driving unit; a braking cable part having one end connected to a braking unit; a first coupling part coupled to the other end of the driving cable part; and a second coupling part coupled to the other end of the braking cable part and screw-coupled to the first coupling part. A distance between the other end of the driving cable part and the other end of the braking cable part may be adjusted according to the extent to which the first and second coupling parts are screwed coupled to each other.

Abstract: Provided is an electro-mechanical brake having a wear compensation function including a carrier fixed to a vehicle body, a brake disk rotatably installed in a wheel of a vehicle, a pad unit including an inner pad disposed on one side of the disk and an outer pad disposed on the other side of the disk, a moving unit configured to move the pad unit in a direction toward the disk, and a wear compensating unit installed between the carrier and the moving unit and moving the pad unit in the direction toward the disk through the moving unit when the pad unit wears in order to maintain the corresponding state, wherein a distance between the pad unit and the disk is maintained within a predetermined distance by the wear compensating unit.

Abstract: Provided by the present invention are: a non-asbestos frictional material composition containing a binder, an organic filler, an inorganic filler, and a fiber substrate, wherein, in the non-asbestos frictional material composition, content of a copper is 5% or less by mass as a copper element, content of a metal fiber other than a copper fiber and a copper alloy fiber is 0.5% or less by mass, and a titanate salt is contained therein with antimony trisulfide or zinc powders, with content of the titanate salt being in the range of 10 to 35% by mass; and a frictional material and a friction member that use the said non-asbestos frictional material composition.

Abstract: A friction member for a bicycle brake that is obtained through combustion synthesis is disclosed. One example of the bicycle brake friction member includes an intermetallic compound, which is obtained from a first metal and a second metal, and a metal phase, which is obtained from the first metal.

Abstract: A method and apparatus for dampening a structure in an aircraft. The apparatus comprises a housing, a first compartment located along an axis extending centrally through the housing, a second compartment located adjacent to the first compartment on the axis extending centrally through the housing, a first piston, a rod, and a second piston. The housing has an elongate shape. The first piston is located within the first compartment of the housing. The first piston defines a first chamber and a second chamber of the first compartment as the first piston moves within the housing. The rod is associated with the first piston and extends centrally through the first compartment and the second compartment. The second piston is coaxial to the first piston and located within the second compartment. The second piston moves relative to the rod to accommodate a flow of a fluid into the second compartment.

Abstract: A liquid-sealed anti-vibration device comprising: an inner tube (1), an outer tube (2); rubber bodies (3), (4) interconnecting the inner and outer tubes (1), (2) in a liquid-tight manner at two positions spaced in an axial direction; a partition wall disposed between the rubber bodies (3), (4) to divide a space between the inner and outer tubes into two parts in the axial direction, the partition wall having an annular rigid member (5a) and an elastic member (5b); liquid chambers (8), (9) configured in such a way that the spaces partitioned by the partition wall (5) are filled with non-compressible liquid; and a limiting passage (7) provided in the partition wall (5) to allow the liquid chambers (8), (9) to communicate with each other, wherein the annular rigid member (5a), protrudes from the inner tube (1) toward the outer tube, the elastic member (5b) connects the annular rigid member (5a) to the outer tube (2), and the limiting passage (7) is formed by at least one passage groove (5c), the passage groove b

Abstract: In the inverted type liquid sealed engine mount in which a secondary liquid chamber is located above, an insulator protrudes in a mountain shape into a primary liquid chamber, and a resistor is provided within an annular recess section formed around the protruding portion. The resistor is mounted by insertion into an engaging recess of a lining layer and elastically supported by ribs so as to be movable in the annular recess section due to liquid flowing in the circumferential direction. A regulation gap is provided between the resistor and the insulator. Although a peculiar resonance occurs when the liquid passes through the regulation gap, the peak of the anti-resonance is decreased and the frequency is moved, since the resistor is movable.

Abstract: A vibration mitigation device configured to be fixedly coupled to a generally horizontally extending support member. The vibration mitigation device includes a generally vertically extending housing extending from the generally horizontally extending support member and a reciprocating assembly coupled with and fully enclosed inside of the generally vertically extending housing.

Abstract: A torque rod includes a rod main body, a first bushing and a second bushing. The rod main body is made of resin and provided integral with a first ring section and a second ring section on each end of an arm section. A first rib extends from the arm section to a front lateral surface of the second ring section. In a plan view, a second rib is provided to overlap with the first rib. The first rib projects forwardly of and in the left and right directions of the second rib. This projecting portion forms an enlarged diameter portion. Due to this enlarged diameter portion, an area of the first rib is made larger than an area of the second rib thereby to increase a rigidity of a forward side of the second ring.

Abstract: A torque coupler includes an input side and an output side, which are situated rotatably around an axis of rotation, and in addition an intermediate plate for coupling with the input side, an output flange for coupling with the output side, a spring damper for coupling the intermediate plate with the output flange, and a centrifugal force pendulum having a pendulum flange and a pendulum mass. Here the pendulum flange extends between a first area, in which the pendulum flange is attached to the intermediate plate, and a second area, in which the pendulum mass is attached to the pendulum flange. The output flange has a cutout, through which a section of the pendulum flange which connects the two areas runs.

Abstract: A pendulum absorber fixed to the crankshaft of an engine comprises a pendulum and a pendulum carrier attached to the pendulum carrier attachment boss of the crankshaft. Each pendulum carrier has a pair of parallel ears extending therefrom. The carrier is tightly attached to the attachment boss such that the attachment boss is captured between the ears of the carrier. Attachment of the pendulum carrier to the sides of the attachment boss allows for feasibility in production, unlike known arrangements which require attachment of the pendulum carrier to the top of the crankshaft web. The fastener may be a pair of pressed-in pins, a single shrink-fit pin, shoulder bolts, Z-Form™ fastener assemblies, or rivets. Regardless of the type of fastener used, the side attachment arrangement of the disclosed inventive concept is sufficient to carry the load in sheer and prevent the pendulum assemblies from moving relative to the crankshaft.

Abstract: A dual clutch type transmission has first and second sections which respectively include first and second clutches. The clutches may be operated to allow torque transfer from an input to an output by way of the first section or the second section. One or more additional gear ratios is provided by a torque transfer pathway connecting the first and second sections such that torque is delivered from the input to the output by way of one or more stages of the first section and one or more stages of the second section. The additional gear ratios may comprise extra low gear ratios. Some embodiments provide transmissions suitable for driving pumps for use in hydraulic fracturing of geological formations.

Abstract: The present disclosure provides a multiple speed transmission having an input member, an output member, a plurality of planetary gearsets, a plurality of interconnecting members and a plurality of torque-transmitting mechanisms. Each of the plurality of planetary gearsets includes a sun gear, a ring gear, and a carrier member with pinion gears. The input member is continuously interconnected with at least one member of one of the plurality of planetary gear sets, and the output member is continuously interconnected with another member of one of the plurality of planetary gear sets. At least ten forward speeds and one reverse speed are achieved by the selective engagement of the plurality of torque-transmitting mechanisms.

Abstract: A power transmission system of a hybrid vehicle includes an input shaft, an output shaft, a first planetary gear set, a second planetary gear set, a third planetary gear set, a first rotational shaft, a second rotational shaft, a third rotational shaft, a fourth rotational shaft, a fifth rotational shaft, a sixth rotational shaft, a seventh rotational shaft, and three friction elements selectively connecting the rotational shafts to each other or selectively connecting the respective rotational shafts and the transmission housing such that the power transmission system can suppress conversion to an ENG mode by providing sufficient power performance upon wide open throttle (WOT) launching and maximally use power of an engine upon conversion to a first HEV mode and a third HEV mode.

Abstract: In a hydraulic tensioner device in which a high hydraulic pressure chamber is configured between a plunger accommodation hole of a tensioner body accommodating a plunger and the plunger to attenuate reactive force acting on the plunger, the tensioner body includes, in a discharge oil passage for discharging oil leaked from the high hydraulic pressure chamber, a pressure maintenance valve for opening and closing the discharge oil passage, air release passages are formed inside the pressure maintenance valve, and an air release valve for releasing air and preventing air from back flowing is provided in the air release passages.

Abstract: A vehicle power steering assembly comprises a steering member having a screw portion. The screw portion has an external screw thread convolution with a first lead spacing. A ball nut is operatively connected to the screw portion. A bushing is operatively connected to the screw portion. The bushing has a bushing screw thread convolution with a second lead spacing. The second lead spacing is different than the first lead spacing. The bushing biases the ball nut against the screw portion.

Abstract: An articulating surgical instrument is disclosed, and includes an end effector and a drive assembly operably coupled with the end effector. The end effector includes a first drive shaft defining a first axis, and a second drive shaft operably engaged with and extending away from the first drive shaft. The second drive shaft is operably coupled with the end effector and defines a second axis, the second axis different from the first axis. The first drive shaft and the second drive shaft are pivotably arranged such that the first drive shaft and the second drive shaft are configured to transition between a first, substantially straight arrangement and a second, substantially perpendicular arrangement.

Abstract: The straight tracking control system can use a control method to achieve a desired straight motion of a machine with a dual path electronically controlled hydrostatic transmission. In the control method, the first drive system, e.g., the left or right drive system, pump solenoid current can be modified based on first and second drive system velocity feedback when the machine is commanded to move in a straight line path in the forward or reverse direction. A memory latching concept is used to latch the straight tracking factor at the initiation of and during the turn so the same straight tracking factor is used throughout the turn. The straight tracking factor is unlatched at the completion of a turn after a specific time delay and a new straight tracking factor can be calculated. The straight tracking method also utilizes transmission fluid temperature and utilizes additional fluid reserve in order to maintain straight machine movement.

Abstract: In a driveline in a front wheel drive vehicle the distribution of drive torque to the drive wheels (1) via a differential (6) is controlled by means of a differential brake with a hydraulically controlled limited slip clutch (7). A low preparatory hydraulic pressure is applied to the clutch at the occurrence of any one of certain predetermined driving situations for decreasing the response time for the clutch.

Abstract: A harmonic drive gear reduction mechanism includes a rigid inner spline with 2(n+1) teeth and a tooth module of m, a flexible outer spline inserted in the rigid inner spline has 2n teeth and a tooth module of m, a flexible bearing inserted in the flexible outer spline, and a wave generator inserted in the flexible bearing. A thickness between an inner diameter of the flexible bearing and a pitch diameter of the flexible outer spline is t, a cross sectional profile of the wave generator consists four curves, the first and third curves have a radius of curvature R, R=m (n+1)?t, a central angle of the first and third curves is k, and 10<k?60, the second and fourth curves and conjunction points between the second, fourth curves and the first, third curves can be first-order differentiated.

Abstract: Embodiments herein relate to piece-part, sub-assembly, assembly, and component levels of a differential composed of a sun gear configuration and utilized in an integrated drive generator. An integrated drive generator is a hydro-mechanical transmission that drives a synchronous salient pole generator. The integrated drive generator is a constant speed output, variable speed input transmission that includes the differential and a hydraulic unit. In general, the integrated drive generator utilizes the variable speed input from an accessory gear box of an engine to drive or control a hydraulic unit, which in turn drives or controls a churn leg member of the differential. As the differential is driven, speeds of each speed member of the differential are then summed to generate the constant speed output to drive the synchronous salient pole generator.

Abstract: A gearbox assembly includes a gearbox housing and a gear located in the housing and rotatable about a central axis. One or more gear shields are fixed in the housing and at least partially surround the gear. The one or more gear shields define a cavity between the gear and the one or more gear shields. The one or more gear shields are configured such that a pumping action is created by the gear rotation to direct gearbox lubricant out of the cavity. A method of scavenging lubricant from a gearbox includes pumping a flow of lubricant circumferentially around a cavity defined between a gear and a gear shield at least partially surrounding the gear via rotation of the gear about a central axis. The flow of lubricant is urged from the cavity into a lubricant outlet. The lubricant is urged through a lubricant channel in an axial direction.

Abstract: A vehicle having a gearbox, a gear control unit and a manually operable selector device, which is electrically connected to the gear control unit and which is provided for selecting different states of the gearbox, includes a sensor device, by which it is possible on actuation of the selector device, to detect whether the selector device is being actuated by a human body part or in some other way.

Abstract: Variable speed control systems and methods for walk-behind working machines, such as lawnmowers and similar powered machines, can include a control lever with a lever arm that is selectively pivotable with respect to a machine handle between a first angular position at which a grip portion of the control lever is spaced apart from the handle by a first angle and a second angular position at which the control lever is proximate to the handle to control the working machine to be in one of a range of operating states corresponding to the angular position of the control lever. A control lever adjustment system is configured to selectively adjust the first angle to adjust a total possible angular travel of the control lever between the first angular position and the second angular position. In this way, an operator can set a range of operating states of the working machine.

Abstract: The invention is provided with an operation lever one end side of which is supported by the trunnion axis so as to be incapable of relative rotation and which is configured to be capable of rotating the trunnion axis, a follower lever a middle portion of which is supported by the trunnion axis so as to be capable of free relative rotation, and a detection switch. For the operation lever, a link for operating the operating lever is connected to the middle portion thereof so that, when rotated by the link, the other side end portion of the operating lever comes into tactile contact with other side end portion of the follower lever so as to rotate the follower lever in order to on/off the detection switch.

Abstract: A method of operating a vehicle drive-train including a drive engine, a transmission device and a drive output. At least one shifting element is provided in the transmission, whose transmission capacity for obtaining an operating condition of the transmission device can at least, in part, be continuously varied. During overdrive operation of the drive-train, torque present at the output can be supported at least partially by the transmission device in the area of the drive engine. During overdrive operation, the transmission capacity of one of the transmission shifting elements, which to obtain the current operating condition of the transmission device is essentially at least approximately zero, is set to a value at which at least part of the torque present at the drive output can be supported in the area of the transmission device, and the rotational speed of the drive engine has a value below a predefined limit value.

Abstract: The present invention relates to a method of engaging an input gear with an output gear in a drivetrain (3). The input gear is coupled to an input shaft (7) and the output gear is coupled to an output shaft (9). The method includes calculating a target input speed (S1?) for the input shaft (7) to match a rotational speed of the input gear to a rotational speed of the output gear. The calculated target input speed (S1?) is then modified to include an offset and the input speed (S1) of the input shaft (7) is then modified in dependence on the modified target input speed (S1?). The input gear and the output gear engage when the input speed (S1) of the input shaft (7) at least substantially matches the modified target input speed (S1?). The present invention also relates to an apparatus.