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879 results about "Layshaft" patented technology

A layshaft is an intermediate shaft within a gearbox that carries gears, but does not transfer the primary drive of the gearbox either in or out of the gearbox. Layshafts are best known through their use in car gearboxes, where they were a ubiquitous part of the rear-wheel drive layout. With the shift to front-wheel drive, the use of layshafts is now rarer.

Ranged dual clutch transmission for motor vehicles

A power transmission for a motor vehicle includes an input, first and second input shafts, a layshaft, drive elements connecting the input shafts to the output and layshaft, couplers, a first clutch for connecting and disconnecting the input and the first input shaft, and a second clutch for connecting and disconnecting the input and the second input shaft. A first torque path driveably connects the first input shaft to the layshaft. A second torque path driveably connects the second input shaft to the layshaft. A third torque path driveably connects the layshaft and output. A bridge torque path driveably connects the first input shaft and the output.
Owner:FORD GLOBAL TECH LLC

Axle drive unit for a hybrid electric vehicle

A drive unit for a hybrid electric motor vehicle includes an engine, an electric machine including a rotor, a layshaft gearset including an input driveably connected to the engine and an output, for transmitting power between the input and the output and producing a first speed differential that causes a speed of the input to exceed a speed of the output, first and second driveshafts, a differential mechanism driveably connected to said output, for transmitting power between said output and the driveshafts, and a planetary gear unit driveably connected to the output and the rotor, for transmitting power between said rotor and said output and producing a second speed differential that causes a speed of the rotor to exceed the speed of the output.
Owner:FORD GLOBAL TECH LLC

Drive train for a vehicle with connectable secondary axle

ActiveUS20090277711A1Reduce additional structural costPower Loss MinimizationControl devicesDrive wheelCoupling
The invention relates to a drive train of a vehicle, comprising a permanently driven primary axle and a secondary axle connectable to the primary axle via a switch-on device with a switch-on mechanism, whereby the secondary drive train output via side shaft couplings is transferred to the drive wheels of the secondary axle.A disadvantage to these drive trains is that also when the secondary axles are not connected their components are dragged along by the vehicle drive or by the drive wheels rolling away on the roadway, causing power losses. Complete shutdown of the secondary drive train to date is executed only by manually switchable wheel hub couplings which are however a disadvantage with respect to ease of use and practicability.Because the switch-on mechanism and / or the side shaft couplings have frictionally engaged couplings, it can be that when the secondary axle is uncoupled the section of the secondary drive train located between the switch-on device and the side shaft couplings is uncoupled both from the primary axle and from the secondary drive wheels, such that there is no more power loss in this secondary drive train section, whereby connecting the secondary drive train during travel is possible all the same and losses in comfort and practicability do not have to be tolerated.
Owner:GETRAG DRIVELINE SYST +1

Hybrid powertrain system

A hybrid powertrain system is provided that includes a first prime mover having a rotational output, a second prime mover having a rotational output, and a transmission having a main shaft supporting at least two main shaft gears thereon. The transmission includes a first independent countershaft drivingly connected to the first prime mover and including at least one ratio gear supported thereon that meshes with a respective main shaft gear. A second independent countershaft is drivingly connected to the second prime mover and includes at least one ratio gear supported thereon that meshes with a respective main shaft gear. The ratio gears on the first and second countershafts cooperate with the main shaft gears to provide at least one gear ratio between the first and second countershafts and the main shaft. A shift control mechanism selectively engages and disengages the first and second countershafts for rotation with the main shaft.
Owner:EATON CORP

Dual clutch transmission having a synchronizer actuation interlock circuit

A dual clutch transmission for a motor vehicle having a synchronizer actuation interlock system includes two input shafts, a counter shaft, and a plurality of gear sets rotatively disposed on the shafts. The gear sets are adapted to be operatively engaged to and disengaged from their respective shafts. A plurality of synchronizers are disposed about the gear sets and the synchronizers are adapted to operatively engage and disengage the gear sets to and from their respective shafts. A plurality of hydraulically actuated shift actuators are each operatively connected to one of the plurality of synchronizers. Each shift actuator is adapted to cause its respective synchronizer to engage and disengage its respective gear sets to and from their respective shaft and further adapted to provide a hydraulic interlock that prevents an associated shift actuator on the same shaft from hydraulically actuating when the shift actuator is already engaged.
Owner:BORGWARNER INC

Dual clutch transmission having low gear mesh loss

A power transmission for a motor vehicle In realizing these advantages, a power transmission according to this invention includes an input shaft, an output, and a layshaft disposed parallel to the input shaft. A pair of drive elements includes a first element secured to the input shaft, and a second element journalled on the layshaft and driveably connected to the first element. A first coupler is secured to the layshaft for releasably coupling the second element and the layshaft. A planetary gear unit driveably connecting the layshaft and the output, includies a sun gear secured to the layshaft, a ring gear surrounding the sun gear and fixed against rotation, a carrier driveably connected to the output, and a set of planet pinions meshing with the sun gear and ring gear and rotatably supported on the carrier.
Owner:FORD GLOBAL TECH LLC

Double-shaft needling machine

The invention discloses a double-shaft needling machine, belonging to the technical field of non-woven textile machinery. The machine comprises a rack, a power transmission mechanism, a main shaft, an auxiliary shaft and an auxiliary shaft transition transmission mechanism. The machine is characterized in that the auxiliary shaft transition transmission mechanism comprises a first belt wheel, a second belt wheel, a transition belt wheel, a tension belt wheel and a transmission belt, wherein the first belt wheel is fixed at the other end part of the main shaft; the second belt wheel is fixed on the auxiliary shaft and corresponds to the first belt wheel; the transition belt wheel and the tension belt wheel are arranged on the rack; the transmission belt is sleeved on the first and second belt wheels, the transition belt wheel and the tension belt wheel; and the transition belt wheel, the tension belt wheel and the first belt wheel are in a triangular positional relation. The double-shaft needling machine disclosed by the invention has the advantages of avoiding noise, reducing the manufacturing and mounting difficulty, being beneficial to maintaining and replacing a bearing, shortening the shutdown time, ensuring the operation efficiency, saving resources and lowering the cost.
Owner:常熟市伟成非织造成套设备有限公司

Shifting claw transmission and shifting method therefor

In a shifting claw transmission for a motor vehicle including a main shaft and a countershaft and an electric motor for rotating the countershaft or being rotated thereby with freely rotatable gear wheels supported on the counter shaft and engageable with the countershaft by claw engagement structures, the speed of the countershaft is adjustable by the electric motor to be close to, but somewhat different from, the speed of the freely rotatable gear wheels to be engaged in order to facilitate shifting but avoid a tooth-on-tooth problem which would inhibit shifting.
Owner:DAIMLER AG

Drive train for a vehicle with connectable secondary axle

A drive train of a vehicle is disclosed which comprises a permanently driven primary axle and a secondary axle connectable to the primary axle via a switch-on device with a switch-on mechanism, whereby the secondary drive train output via side shaft couplings is transferred to the drive wheels of the secondary axle. Because the switch-on mechanism and / or the side shaft couplings have frictionally engaged couplings, it can be that when the secondary axle is uncoupled, the shutdown section of the secondary drive train located between the switch-on device and the side shaft couplings is uncoupled both from the primary axle and from the secondary drive wheels, such that there is no more power loss in this shutdown section, whereby connecting the secondary drive train during travel is possible all the same and losses in comfort and practicability do not have to be tolerated.
Owner:GETRAG DRIVELINE SYST +1

Mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle

The invention discloses a mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle. The drive axle comprises an axle shell, a drive motor is externally arranged,a transmission system is located in the axle shell and comprises a low gear transmission mechanism, a reverse gear transmission mechanism and an adaptive transmission assembly; the reverse gear mechanism has a transmission ratio I which transmits a reverse gear power from an auxiliary shaft to a main shaft, the low gear transmission mechanism has a transmission ration II which transmits a low gearpower from the auxiliary shaft to the main shaft, and the transmission ratio I is greater than or equal to the transmission ratio II. According to the mechanical double-overrunning clutch adaptive automatic transmission external motor drive axle, reasonable cooperation of two overrunning clutches is utilized, so that the overall structure is simple and compact, a transmission line is shared by reverse gear transmission, low gear transmission and fast gear transmission, and no interference is produced, the overall performance is ensured, the adaptive capacity is relatively strong, the cooperation with the adaptive automatic transmission mechanism is smooth and natural, the overall efficiency is improved, the whole transmission system is located in the axle shell, the overall structure is compact, the strength and rigidity of the whole axle is improved, and the occupying volume is small.
Owner:SOUTHWEST UNIVERSITY

Apparatus for driving an accessory gearbox in a gas turbine engine

A mechanical drive system for an accessory gearbox of a gas turbine engine is provided. The engine has a high-pressure drive shaft and a low-pressure drive shaft. The mechanical drive system includes a first tower shaft, a second tower shaft, a first lay shaft, and a second lay shaft. The first tower shaft is driven by the high-pressure drive shaft. The second tower shaft is driven by the low-pressure drive shaft. The first lay shaft is driven by the first tower shaft, and is connected to the accessory gearbox. The second lay shaft is driven by the second tower shaft, and is connected to the accessory gearbox.
Owner:UNITED TECH CORP

Multi-Mode Powersplit Powertrain for Electric Vehicle

A powertrain includes a countershaft, a gearset including a sun gear, a carrier connected to an engine, a ring gear releaseably held against rotation and connectable to the countershaft, and pinions supported on the carrier and meshing with the sun gear and ring gear, an electric machine connected to the sun gear and connectable to the countershaft, and a second electric machine driveably connected to the countershaft.
Owner:FORD GLOBAL TECH LLC

Six speed motorcycle transmission

A six speed gear assembly for a motorcycle transmission is provided that includes a mainshaft gear shaft with a plurality of mainshaft gears mounted in sequence thereon, wherein the sequence includes a mainshaft 4th gear, a mainshaft 3rd gear, one of a mainshaft 1st gear and a mainshaft 2nd gear, the other of the mainshaft 1st gear and the mainshaft 2nd gear, a mainshaft 6th gear, and a mainshaft 5th gear. The six speed gear assembly also includes a countershaft gear shaft with a plurality of countershaft gears mounted in sequence thereon, wherein the sequence includes a countershaft 4th gear, a countershaft 3rd gear, one of a countershaft 1st countershaft 1st gear and a countershaft 2nd gear, the other of the countershaft 1st gear and the countershaft 2nd gear, a countershaft 6th gear, and a countershaft 5th gear.
Owner:THIESSEN PRODS

Hybrid powertrain with a gearbox and method to control the hybrid drivetrain

A hybrid powertrain that includes a combustion engine (4); a gearbox (2) with an input shaft (8) and an output shaft (20); a first planetary gear (10) connected to the input shaft (8) a second planetary gear (12) connected to the first planetary gear (10); a first electrical machine (14) connected to the first planetary gear (10); a second electrical machine (16) connected to the second planetary gear (12); a first gear pair (G1, 60) and a third gear pair (G1, 72) situated between the first planetary gear (10) and the output shaft (20); and a second gear pair (66) and a fourth gear pair (G2, 78) situated between the second planetary gear (12) and the output shaft (20); a countershaft (18) provided between the respective first and the second planetary gears (10, 12) and the output shaft (2), and (18) connected to the output shaft (20) via a fifth gear pair (G3M 21). Also, disclosed is a method for controlling the hybrid powertrain. Also a method for controlling a hybrid powertrain (3) and a computer program (P) for controlling the hybrid powertrain (3).
Owner:SCANIA CV AB

Single clutch transmission

A two speed transmission includes an input shaft; a lay shaft spaced from the input shaft; a first gear train connecting the input shaft to the lay shaft; a second gear train connecting the lay shaft to an output shaft the gear train including a one way clutch or similar; and a clutch for engaging the input shaft with the output shaft. The transmission is arranged such that when the output shaft is disengaged from the input shaft power is transmitted to the output shaft via the first and second gear trains and the lay shaft. When the clutch is disengaged, power is transmitted from the input shaft via the gear trains and the lay shaft via the one way clutch to the output shaft which typically provides first or low gear for use in low speed maneuvering or where greater torque is required. With the clutch engaged, power may be transmitted from the input shaft directly to the output shaft to provide a second gear for when the watercraft is cruising. This transmission system has the advantage of being extremely compact and since, it requires only a single clutch, provides reduced drag compared with transmission systems incorporating more than one clutch. Advantageously, the default for the transmission has the one way clutch or similar in the first or lower gear, with the clutch normally on, so that if the system fails, it is always possible for the boat owner to get the boat home albeit at a slower speed.
Owner:CONSULTING INT

Apparatus for driving an accessory gearbox in a gas turbine engine

ActiveUS20050183529A1Increased versatility and capabilityEngine fuctionsToothed gearingsDrive shaftPressure.drive
A mechanical drive system for an accessory gearbox of a gas turbine engine is provided. The engine has a high-pressure drive shaft and a low-pressure drive shaft. The mechanical drive system includes a first tower shaft, a second tower shaft, a first lay shaft, and a second lay shaft. The first tower shaft is driven by the high-pressure drive shaft. The second tower shaft is driven by the low-pressure drive shaft. The first lay shaft is driven by the first tower shaft, and is connected to the accessory gearbox. The second lay shaft is driven by the second tower shaft, and is connected to the accessory gearbox.
Owner:RTX CORP

Twin-clutch manual transmission

A twin-clutch manual transmission including: first and second input shafts provided with respective clutches; a counter shaft parallel to these input shafts; gear sets of an odd-numbered gear range group disposed between the rear end portion of the first input shaft and the counter shaft; gear sets of the even-numbered gear range group disposed between the second input shaft and the counter shaft; an output shaft being concentric with and abutting on a rear end of the first input shaft; and a synchronizer provided between the rear end of the first input shaft and the output shaft to provide a direct-coupling gear range. The odd-numbered gear range group includes the direct-coupling gear range.
Owner:NISSAN MOTOR CO LTD

Hybrid powertrain and a vehicle with such a hybrid powertrain

The present invention relates to a hybrid powertrain, comprising an internal combustion engine; a gearbox with an input shaft and an output shaft; a first planetary gear, connected to the input shaft; a second planetary gear, connected to the first planetary gear; a first electrical machine, connected to the first planetary gear; a second electrical machine, connected to the second planetary gear; at least one gear pair, connected with the first planetary gear and the output shaft; and at least one gear pair, connected with the second planetary gear and the output shaft, wherein the internal combustion engine is connected with the first planetary gear via the input shaft, wherein a countershaft is arranged between the respective first and second planetary gears and the output shaft; and the countershaft is connected with the output shaft via a range gearbox.
Owner:SCANIA CV AB

Multistep transmission of a layshaft type

A multi-speed transmission of countershaft design having a main countershaft and a hollow countershaft arranged concentrically and having likewise two load-shift elements. A first half of the shift elements is connected with a drive unit and a second half of the shift elements is connected to a gearbox input shaft. The gearbox input shafts and countershafts are mounted in a housing and connected to gear wheels, which intermesh in pairs as gear wheel pairs and can be connected or disconnected in order to reduce the overall gear ratio in the power flow. The main countershaft is mounted directly on the housing in the area of its first end and in the hollow countershaft in the area of its second end. The hollow countershaft is mounted in the housing in the area of its end that faces toward the end of the main countershaft that is mounted in the hollow countershaft.
Owner:ZF FRIEDRICHSHAFEN AG

Axle drive unit for a hybrid electric vehicle

A drive unit for a hybrid electric motor vehicle includes an engine, an electric machine including a rotor, a layshaft gearset including an input driveably connected to the engine and an output, for transmitting power between the input and the output and producing a first speed differential that causes a speed of the input to exceed a speed of the output, first and second driveshafts, a differential mechanism driveably connected to the output, for transmitting power between the output and the driveshafts, and a planetary gear unit driveably connected to the output and the rotor, for transmitting power between the rotor and the output and producing a second speed differential that causes a speed of the rotor to exceed the speed of the output.
Owner:FORD GLOBAL TECH LLC

Mechanical double-overrunning clutch main shaft outputting adaptive automatic transmission high speed motor wheel chair hub

The invention discloses a mechanical double-overrunning clutch main shaft outputting adaptive automatic transmission high speed motor wheel chair hub. A reverse gear mechanism has a transmission ratioI which transmits a reverse gear power from an auxiliary shaft to a main shaft, a low gear transmission mechanism has a transmission ration II which transmits a low gear power from the auxiliary shaft to the main shaft, and the transmission ratio I is greater than or equal to the transmission ratio II. According to the mechanical double-overrunning clutch main shaft outputting adaptive automatictransmission high speed motor wheel chair hub, reasonable cooperation of two overrunning clutches is utilized, reasonable set of the transmission ratios are realized on the reverse gear structure andthe low gear mechanism, so that the overall structure is simple and compact, a transmission line is shared by reverse gear transmission, low gear transmission and fast gear transmission, and no interference is produced, the overall performance of the mechanical adaptive automatic transmission provided by the invention is ensured, the adaptive capacity is relatively strong, the cooperation with theadaptive automatic transmission mechanism is smooth and natural, the mechanical adaptive automatic transmission is applicable to the field of electric cars, meanwhile, a reducing input structure is utilized, the mechanical adaptive automatic transmission is suitable for power input of the high speed motor, and the overall efficiency is improved.
Owner:SOUTHWEST UNIV
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