Abstract: A utility vehicle includes: an engine; a drive wheel; a power transmission path between the engine and the drive wheel; a clutch that is provided in the power transmission path and configured to disconnect power transmission when an engine rotational speed is lower than an engage rotational speed; an engine rotational speed sensor configured to sense the engine rotational speed; and a controller configured to control an operation of the engine, the controller including an engine brake necessity determination circuitry configured to determine necessity of engine braking, and an engine rotational speed control circuitry configured to control the engine rotational speed, and when the engine brake necessity determination circuitry determines that engine braking is necessary, the engine rotational speed control circuitry is configured to perform automatic engine brake control that increases the engine rotational speed so as to be equal to or higher than the engage rotational speed.

Abstract: Methods and systems are provided for a transmission housing of a vehicle. In one example, a system comprises a transmission housing comprising at least one cover configured to support a shift fork, wherein the at least one cover is removable from an exterior of the transmission housing.

Abstract: An electric drive unit clutch for an automobile includes a first rotatable shaft, a one-way clutch fixedly mounted onto the first rotatable shaft, a dog clutch slidingly mounted onto the first rotatable shaft and adapted to rotate with the first rotatable shaft, a clutch ring positioned between the one-way clutch and the dog clutch, and a second rotatable shaft rotatable engaged with the clutch ring, wherein the clutch ring is adapted to transfer rotational motion from the second rotatable shaft through the one-way clutch and the dog clutch to the first rotatable shaft.

Abstract: The present invention relates to a transmission apparatus of an agricultural working automobile, the transmission apparatus comprising: a first gear-shifting part for performing gear-shifting to adjust the speed of an agricultural working automobile; and a second gear-shifting part for performing gear-shifting to adjust the speed of the agricultural working automobile, wherein the second gear-shifting part comprises a sub-gear-shifting drive mechanism for performing gear-shifting, using one operation selected from among an operation transferred through a first power transmission path from the first gear-shifting part and an operation transferred through a second power transmission path from the first gear-shifting part.

Abstract: A motor vehicle system comprising a first electric parking brake actuation unit assigned to a first vehicle wheel, and a second electric parking brake actuation unit assigned to a second vehicle wheel. The system further comprises a first control unit which includes at least one first microprocessor and which is designed to control the first electric parking brake actuation unit and does not allow the second electric parking brake actuation unit to be controlled. Furthermore, a second control unit is provided which comprises at least one second microprocessor and which is designed to control the second electric parking brake actuation unit and does not allow the first electric parking brake actuation unit to be controlled. The redundancy of the two control units increases the system safety. At the same time, the system complexity remains low since no individual control unit has to be designed to control all of the electric parking brake actuation units.

Abstract: A dual clutch transmission for motor vehicles has first and second input shafts, two clutches selectively coupling the input shafts the engine, two intermediate shafts arranged parallel to the transmission input shafts, gearwheel pairs configured to transmit power between the input shafts and the intermediate shafts, and output gearwheels arranged on each of the two intermediate shafts. The output gearwheels mesh with the differential wheel and are selectively coupled to the respective intermediate shaft by one of the coupling devices. An additional intermediate gearwheel set is provided, that one gearwheel of the intermediate gearwheel set is seated on the first or second intermediate shaft, that the other gearwheel of the inter-mediate wheel set is arranged on a third intermediate shaft, and that a third output gearwheel, which meshes with one of the output gearwheels of the first or second intermediate shaft, is seated on the third intermediate shaft.

Abstract: A dual clutch transmission for motor vehicles has first and second input shafts, two clutches configured to selectively couple the input shafts to an engine, two intermediate shafts arranged parallel to the input shafts, gearwheel pairs of which a fixed gearwheel is arranged on one of the input shafts and a freely rotating gearwheel is arranged on one of the intermediate shafts, freely rotating output gearwheels arranged on each of the two intermediate shafts and meshing with a differential wheel, and coupling devices configured to selectively couple the freely rotating gearwheels to the respective intermediate shaft, of which at least the coupling devices for the output gearwheels are of double acting design. A dual clutch transmission of this kind makes a large number of gears possible without significantly increasing the dimensions of the transmission or the weight thereof.

Abstract: A drive device for a motor vehicle, having an internal combustion engine that outputs to a gearbox or transmission. A plurality of gear ratios steps provides shiftable driving gears from a starting gear to a highest driving gear. The gearbox has at least one gear ratio step that provides an overrun gear, which cannot be engaged in the traction mode, but only in an overrun mode, in which the vehicle drags the internal combustion engine.

Abstract: An impact tool performs a processing operation on a workpiece by carrying out an impact operation on a tool bit in a longitudinal axis direction. The impact tool includes a motor having a rotor and a stator, a tool main body housing the motor, a drive shaft parallel to a longitudinal axis of the tool bit and rotatably driven by the motor, and an oscillating member that is supported by the drive shaft and that carries out an oscillating movement in the axial direction of the drive shaft based on the rotational motion of the drive shaft. A tool drive mechanism is coupled to the oscillating member so that the oscillating movement of the oscillating member linearly moves the tool bit in the longitudinal axis direction. The motor is an outer rotor motor in which the rotor is disposed on an radially outer side of the stator.

Abstract: Transmission group for vehicles comprising an engine provided with at least one engaging device, arranged between transmission gears and mobile between a first rest position, wherein the transmission gears are mutually integral and both in mesh with a transmission shaft, and a second working position wherein the first gear is in mesh with the transmission shaft and the second gear is unconstrained both with respect to the transmission shaft and with respect to the gear, provided for being means for actuating of the engage device, wherein the engine, the output gear and an output shaft are integrated in a first module fixed to the vehicle and that the transmission shaft, the transmission gears, the engage device and the actuating means thereof are integrated in a second module independent and demountable with respect to the first module.

Abstract: The shift sequence for a transmission ratio change of a vehicle drive train is determined depending on an operating state of the vehicle drive train existing upon the actual transmission ratio of the transmission device. The operating state is characterized by various operating state quantities of the vehicle drive train, which represent input quantities of a model representing the vehicle drive train. Output quantities of the model supply at least one target value that determines the shift sequence in terms of characterization and application as input quantities of an optimization routine, by which a minimization of the functional connection of at least one target value is carried out. The torque characteristics representing the shift sequence of devices of the vehicle drive train are determined depending on the minimum of the functional connection of at least one target value, taking into account the limits of the operating state quantities.

Abstract: A system for a vehicle includes an active fuel management (AFM) module, an expected engine speed determination module, and a disabling module. The AFM module selectively cuts off fuel to at least one cylinder of an engine and maintains valves of the at least one cylinder in closed positions. The expected engine speed determination module determines an expected engine speed based on a position of a shift lever of a manual transmission measured using a position sensor module. The disabling module selectively disables the AFM module based on the expected engine speed.

Abstract: A circular saw in which cutting speed of a saw blade is smoothly controlled. A speed change mechanism of a circular saw includes first and second rotating shafts disposed parallel to each other, and first and second gear trains having different gear ratios and each having a combination of a drive gear and a driven gear as one unit which are engaged with each other and transmit torque of the first rotating shaft to the second rotating shaft. A torque transmission path via the first gear train is defined as a first power transmission path and a torque transmission path via the second gear train is defined as a second power transmission path, and the transmission path is switched between the first power transmission path and the second power transmission path.

Abstract: A power tool includes a power source, a speed change mechanism and a tool bit. The speed change mechanism includes first and second rotating shafts disposed parallel to each other, a first power transmission path provided with a first gear train and a first clutch and a second power transmission path provided with a second gear train and a second clutch. The power transmission path is switched between the first power transmission path and the second power transmission path while the first and second gear trains are held engaged, by shifting of the first and second clutches between the power transmission state and the power transmission interrupted state according to a load applied to the tool bit. The speed change mechanism further includes a switching retaining mechanism, a switching preventing mechanism, a switching set value adjusting mechanism or a switching mechanism.

Abstract: A mechanical gearbox for motor vehicles presenting: a first shaft; a second shaft; a plurality of gear pairs, each of which mechanically couples the first shaft to the second shaft, defines a corresponding speed and comprises a first gear mounted on the first shaft and a second gear which is mounted on the second shaft and permanently meshes with the first gear; a plurality of synchronizers, each of which is mounted coaxially to a shaft between two gears of two gear pairs and is adapted to be actuated to alternatively engage the two gears to the shaft; and an actuation system for displacing each synchronizer alternatively in the two senses along the respective shaft and comprising a plurality of forks, each of which envelops a corresponding synchronizer; the gear pair of two consecutive speeds are arranged so as to be engaged by two different synchronizers; and the actuation system independently actuates the synchronizers.

Abstract: An arrangement for inhibiting axial movement of a range clutch in a transmission includes a driver adapted to move the range clutch axially on an output shaft between a high range position and a low range position, a sensor arrangement adapted to sense at least one of reverse rotational direction and potential reverse rotational direction of at least one of a main shaft and the output shaft and to generate an inhibit range shift signal upon sensing at least one of reverse rotational direction and potential reverse rotational direction, and a controller adapted to inhibit operation of the driver upon receipt of the inhibit range shift signal from the sensor arrangement. A transmission and a vehicle including such an arrangement are also disclosed. A method for inhibiting axial movement of a range clutch in a transmission, and a method of retrofitting a transmission with an arrangement for inhibiting axial movement of a range clutch are also disclosed.

Abstract: An automatic transmission that includes oil passages with a simple structure provided for twin clutches can allow the number of production steps to be reduced. The automatic transmission includes a number of gear trains equal to the number of speeds between a primary shaft and a countershaft. The automatic transmission performs connection and disconnection of a rotational driving force between a crankshaft and a gearbox by means of twin hydraulic clutches including first and second clutches, which are made of the same components and disposed on the axis of the primary shaft back to back. Oil passages can be formed into a more simple shape and can be configured to have the same total length. The first clutch performs connection and disconnection for first and third speeds, and the second clutch performs connection and disconnection for second and fourth speeds.

Abstract: A driving apparatus of a multi-function machine includes a scanner unit scanning data recorded on a sheet of document and a document transport part to transport the sheet of document. A printer unit prints data on a sheet of paper for an output and includes a carrier including a print head with an ink jet nozzle mounted thereon to carry out the printing operation by moving the print head. The driving apparatus includes a driving motor, a scanner driving part driving the scanner unit, a printer driving part driving the printer unit, and a power switching part disposed with the driving motor, the scanner driving part, and the printer driving part. The power switching part selectively transmits a power of the driving motor to at least one of the scanner driving part and the printer driving part.

Abstract: A transmission for a tractor comprises a transmission case having an opening that opens to exterior of the transmission case and a speed change device that is housed in the transmission case. The transmission also includes a cover removably attached to the transmission case for closing the opening of the transmission, a main speed change shift fork supported by the cover and capable of engaging with and moving a main speed change shifter, and a sub speed change shift fork supported by the cover and capable of engaging with and moving a sub speed change shifter. The cover is capable of mounting a creep speed change device having a creep speed position.

Abstract: A driving apparatus of a multi-function machine includes a scanner unit scanning data recorded on a sheet of document and a document transport part to transport the sheet of document. A printer unit prints data on a sheet of paper for an output and includes a carrier including a print head with an ink jet nozzle mounted thereon to carry out the printing operation by moving the print head. The driving apparatus includes a driving motor, a scanner driving part driving the scanner unit, a printer driving part driving the printer unit, and a power switching part disposed with the driving motor, the scanner driving part, and the printer driving part. The power switching part selectively transmits a power of the driving motor to at least one of the scanner driving part and the printer driving part.

Abstract: Motor vehicle gearbox with two concentrically mounted input shafts, each driving an individual layshaft, having gears in engagement with gears on an output shaft. One layshaft has a central synchronization device, via which the layshaft which is driveably coupled to the momentarily non-driven input shaft, can be accelerated up to a rotational speed chosen by the selected gear speed. The central synchronization device has a friction clutch and two synchronization gears of different diameter, the gear of smaller diameter being widened relative to the other and being lockable to the shaft by an engagement sleeve, so that drive torque can be transmitted via the synchronization gear. The second layshaft is releasable by an engagement device, whereby torque can be transmitted from one layshaft to the other and to the output shaft.

Abstract: A ribbon mechanism mounted in the lid of a printer includes a ribbon carriage pivotally coupled to the lid for folding out of the lid by virtue of its mass when the lid is open and for folding in the lid as the lid is closed. The invention comprises a clutch disk made of plastic, which may be used in a printer mechanism. The design utilizes two different injection molded plastic clutch disks that run face to face to produce relatively high dynamic and low static frictional forces. The clutch assembly uses raised areas on one of the pair of clutch disks. The raised areas allow a better overall contact between the disks so as to achieve more desirable coefficients of friction. The materials chosen for the clutch disks not only have the desirable coefficients of friction, but also have good wear characteristics against each other.

Abstract: A shiftable gear transmission has a plurality of gear pairs with free gears that can be engaged to one of the shafts by means of shift clutches and fixed gears that are permanently locked to one of the shafts. A start-up clutch arranged at the input side of the transmission couples and uncouples the torque flow. At least one of the shift clutches is a power-shift clutch with the ability to transmit a greater amount of torque than the other shift clutches. The start-up clutch and the power-shift clutch are controlled by at least one actuator unit.

Abstract: The transmission and clutch assembly including a conventional casing, a slidable input shaft directly engageable to the drive member for high gear, and further including an output shaft which is rotatably engaged in the open end of the input shaft, and further including a countershaft for change speed mode and reverse speed, a reverse speed shaft, a clutch housing, a clutch shaft connected to the clutch housing, a pair of pressure members, and a throw-out bearing for change speed mode including reverse speed. This transmission and clutch assembly does not use any internal oil pressure to effect changing of gears and substantially reduces the rotating weight of the transmission when the vehicle is in high gear, because the clutch housing, clutch shaft, input gear and pressure members do not rotate when the transmission is in direct drive speed mode unlike other known transmissions.

Abstract: The present invention provides an apparatus for locking a gear train in high and low gear modes. A printed circuit board has first, second and third conductive pads, each of which are in electrical communication with a main circuit. A conductive clip having first and second contact portions is in slidable contact with the conductive pads, and is adapted to shift between a high gear position and a low gear position in response to actuation by an actuator. The low gear position is defined when the first contact portion contacts the first conductive pad and the second contact portion contacts the second conductive pad, and the high gear position is defined when the first contact portion contacts the second conductive pad and the second contact portion contacts the third conductive pad. The actuator is adapted to actuate the clip into the respective high and low gear positions in response to a signal from the main circuit and to cease actuation when the clip is at the respective high and low gear positions.

Abstract: A landing gear for semitrailers includes a two speed double reduction gear assembly having fewer, smaller, and simpler parts, resulting in a compact double reduction gear assembly housed in a relatively small gear box or entirely within one of the landing gear legs, which is a cost efficient landing gear unit with a unique clutch-shifting mechanism to provide for shifting from one ratio to another. The double reduction gear assembly is disposed on and about in-line input and output shafts further resulting in an easy to crank and shift landing gear unit capable of achieving standard crank handle turn to vertical leg travel distance ratios. The low gear or low speed ratio of the landing gear unit can be varied within a broad range during manufacture, if desired, generally without increasing the overall size or complexity of the two speed double reduction gear assembly. The landing gear can further include a universal mounting feature and is durable and simple to use.

Abstract: A gear reversal mechanism for a hand held power tool is selectively operative to reverse the output of a unidirectional motor and provides a direct drive forward mode and an indirect drive reverse mode, with the selection therebetween being implemented by a manual shift collar operating a cam mechanism selectively to reorient the gear train and consequent direction of motor output. The shift collar is temporarily locked to the gear housing during tool operation by using the operative air pressure of the tool to expand a locking mechanism into locking engagement with such shift collar. With or without the locking mechanism, an exhaust shutoff shift interlock may be provided to permit exhaust air to exit the housing when the shift collar is in either its forward or reverse operating positions or alternatively to close the housing exhaust ports to block exhaust air flow to preclude motor operation when the shift collar is between its operating positions.

Abstract: A manually shiftable transmission for use in automobiles with the usual driven shaft, axially aligned with a drive shaft. The usual gears, (for example, first, second, third, and fourth gear) are present on said shafts, to transmit a drive from any one gear to said driven shaft. Four sleeves, or driven members, are mounted by splines upon the main shaft and each is slidable thereon longitudinally of the shaft to pair with a gear. Each pair of driven member-and-gear has confronting lateral faces: on each said lateral face is formed one or more dogs to engage with the corresponding dog on a respective confronting face to transmit a drive from the gear to the driven member. The driven members are adapted for sliding travel by shifting forks between a neutral position and a drive position, in which the driven dogs on the driven member engage with the driving dogs on its companion gear.

Abstract: Transfer gearing for converting a vehicle with a single power-driven axle to four-wheel-drive is housed partially within the vehicle's gearbox. The transfer gearing comprises a train of gears on vertically spaced shafts, the lowermost shaft having a coupling flange adapted to be driveably connected by a cardan shaft to an auxiliary power-driven axle, and the uppermost shaft being disengageably connectible by clutch means to the output shaft of the vehicle's gearbox. The clutch means comprise a dog clutch sleeve slideable axially by a selector fork operated manually by means including an arm pivotally mounted externally upon the vehicle's gearbox.

Abstract: A lever bank for implement controls on large construction or agricultural vehicles has a "home" position for operation of the levers. One of the levers has a handle which is larger than the handles of the other levers. This large handle provides a rest position for the operator such that the operator will know the location of the other handles relative to this one handle. The operator may thus rest a hand on this one lever, and know where the other levers are relative to the one lever without looking away from the direction of movement of the vehicle. This simplifies operation of the vehicle.