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7604557 |
Vehicle transmission
A vehicle transmission includes a crankshaft box unit, a clutch unit, and a transmission box unit. The crankshaft box unit includes a crankshaft box, a crankshaft extending through the clutch unit...
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7556576 |
V-belt continuously variable transmission and straddle-type vehicle
In a V-belt continuously variable transmission (CVT), a sheave drive mechanism includes a movable tube coupled to a movable sheave half of a primary sheave so as to be rotatable with respect...
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7546196 |
Line pressure control apparatus for belt-drive continuously variable transmission
In a line pressure control apparatus of a belt-drive CVT, a shift is achieved by varying V- groove widths of primary and secondary pulleys by a differential pressure between primary and secondary...
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7517295 |
Conical disk pair for a belt-driven conical-pulley transmission
A conical disk pair for a belt-driven conical-pulley transmission includes a fixed disk, and a movable disk that is axially movable and rotationally fixed to an input shaft. A torque sensor is...
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7465244 |
Utility machinery and associated control arrangements
A power transmission device for utility machinery is disclosed, the device including:
a) a sleeve supporting a first sheave member having a first face; b) a hub received through said sleeve and...
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7402118 |
Control device for controlling V-belt continuously variable transmission
A control device for controlling a continuously variable transmission ( 5 ) is disclosed. The control device has an oil pressure control unit ( 100 ) which supplies an oil pressure to a primary...
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7387589 |
Shift control apparatus of belt type continuously variable transmission
A shift control apparatus of a belt type continuously variable transmission is comprised of a controller which is arranged to set a first hydraulic pressure controlled variable based on a first...
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7320654 |
Ratio control system for an automatic transmission in a vehicle
A procedure for the control of ratio-change occurrences of an automatic transmission in a motor vehicle, which vehicle possesses a hydraulic system with at least two hydraulic pressure branches (...
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7311624 |
Apparatus for controlling speed of a water pump
For enhancement of heating performance of a vehicle, operating speed of a water pump of an engine is varied in accordance with engine operation conditions, so a speed of a coolant temperature...
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7291078 |
Control of belt-type continuously variable transmission
A gear change control system of a belt-type continuously variable transmission includes: a movable pulley piston chamber for causing a thrust force to a movable pulley varying a groove width of...
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7264564 |
Cone disc infinitely-variable gearbox
A cone disc infinitely-variable gearbox including a shaft, a cone disc preferably embodied in one piece with the shaft, a cone disc connected to the shaft in a non-rotating axially-displaceable...
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7241238 |
Device for controlling contact pressure in a continuously variable transmission
The invention relates to a device for controlling the contact pressure of a transmission element of a continuously variable transmission, especially the traction element of a flexible drive for...
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7229372 |
Slippage prevention apparatus of belt-drive continuously variable transmission for automotive vehicle
During a downshift of a belt-drive continuously variable transmission, occurring owing to vehicle deceleration, a CVT controller foretells that a slippage between a drive belt and each of primary...
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7229373 |
Engine torque control system
In case information such as an actual gear ratio is not stored in an EEPROM 28 due to a trouble of a backup power source 29 or like when an initialization operation of a step motor 27 is...
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7222005 |
Abnormal oil pressure reduction determination device for vehicle transmission
An abnormal oil pressure reduction determining device has an oil pressure sensor which detects a real oil pressure, a sensor which detects a vehicle running state, and a controller which sets an...
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7211013 |
Hydraulic control apparatus for V-belt type continuously variable transmission
There is provided a hydraulic control apparatus for a belt CVT, which is comprised of a pulley pressure control section that controls the line pressure in accordance with the oil amount balance of...
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7197385 |
Method and apparatus for adjusting a contact force in a motor vehicle drive train
A method and apparatus for regulating the contact force between two frictionally-engaged torque-transmitting components of a motor vehicle drive system. A contact force between an endless...
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7192371 |
System and method of controlling V-belt type continuously variable transmission
A system for controlling a V-belt type CVT is constructed to change a first position of a step motor to a second position of the step motor corresponding to a second target shift ratio if it is...
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7169070 |
Transmission controller of V-belt type continuously variable automatic transmission
There are provided with a determination means for determining whether or not the correlation between the pressure value detected by the primary pressure sensor and the pressure value detected by...
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7140990 |
Control for belt-type continuously-variable transmission
In a belt drive continuously-variable transmission control apparatus, a line pressure control section controls a line pressure to be supplied to a shift control valve for controlling a fluid...
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7140991 |
Shift control system, and control apparatus and method for belt-type continuously variable transmission
A shift control system includes a belt-type continuously variable transmission (CVT) with primary and secondary pulleys, a shift actuator that regulates an oil pressure supplied to the primary or...
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7131921 |
Belt-driven conical-pulley transmission
A continuously variable transmission having two pairs of conical disks operatively connected by an endless torque-transmitting belt. One of each of the disk pairs is axially movable relative to the...
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7121967 |
Control circuit and method for generating a control signal for controlling a continuously variable belt transmission
The invention relates to a control circuit for generating a control signal (I) for controlling the transmission ratio adjustment of a belt transmission continuously adjustable with respect to its...
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7118501 |
V-belt continuously variable transmission
A V-belt continuously variable transmission includes a primary pulley and a secondary pulley. The primary pulley is connected to an input shaft and the secondary pulley is connected to an output...
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7112154 |
System and method for hydraulically controlling automatic transmission
Hydraulic control system and method for an automatic transmission. The hydraulic control system includes a hydraulic pressure source, a flow rate control valve having a spool with an orifice and a...
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7104907 |
System and method of controlling automatic transmission
In a system for controlling an automatic transmission, at the time of ultra-low temperature start with the oil temperature of −20° C. or less, control is carried out such that when the state...
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7090601 |
Tractor hitch transmission
The invention involves an agricultural machine with a drive train to be coupled onto the power take-off shaft of a tractor, with a transmission integrated into the drive train. In these types of...
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7074144 |
Hydraulic control apparatus for vehicle with belt-drive continuously variable transmission
Hydraulic control apparatus includes a belt-drive CVT, a pressure regulator valve (P.REG.V) regulating the oil pressure produced by an oil pressure source, a controller programmed to develop a...
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7066855 |
Line pressure control apparatus for continuously variable transmission
There is provided a line pressure control apparatus that is comprised of a line pressure control section that controls line pressure according to its target value calculated based on input torque...
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7059982 |
Utility machinery and associated control arrangements
A power transmission device for utility machinery is disclosed, the device including:
a) a sleeve supporting a first sheave member having a first face; b) a hub received through said sleeve and...
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7048657 |
Belt-driven conical-pulley transmission
A transmission with a drive side and an output side conical disk pair. One conical disk pair includes a fixed disk carried by a shaft, a movable disk non-rotatably connected with and axially...
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7041018 |
Hydraulic control system and method for belt-drive continuously variable transmission
Hydraulic control system and method for a belt-drive continuously variable transmission (CVT). The system includes an oil pump operative to produce an oil pressure and an oil flow amount which are...
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7029409 |
Hydraulic system for a CVT-transmission of a vehicle
A hydraulic system of a CVT transmission of a motor vehicle is proposed, which has an oil pump for conveying oil from an oil sump to a variator comprising a first pulley set and a second pulley...
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7029410 |
System for preventing belt slip of belt-type continuously variable transmission
CVT control unit of a belt CVT checks whether a reverse rotation of pulleys is generated. When the reverse rotation is generated, a PLpri torque capacity is calculated from a primary pressure Ppri,...
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7014583 |
Continuously variable transmission
The invention concerns a continuously variable belt-drive transmission, especially for motor vehicles. In the pressure less state of the transmission, the axially displaceable cone pulley of the...
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6997834 |
Device for guiding a moveable conical pulley disc of a CVT variator
A device, in a continuously variable belt transmission system, for guiding a conical pulley ( 3 ) of a variator on a variator shaft ( 1 ). The moveable conical pulley ( 3 ) is fitted onto two...
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6980897 |
Oil pressure reduction rate restricting apparatus for V-belt type continuously variable transmission
There is provided an oil pressure reduction rate restricting apparatus for a V-belt type continuously variable transmission, which is comprised of a reduction rate restricting section that...
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6962542 |
Continuously variable transmission and pulley
A transmission includes a set of pulleys, in which at least one disc is axially displaceable and provided with cylinder piston elements. The cylinder/piston elements include at least one pressure...
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6890275 |
Continuously variable transmission
A continuously variable transmission for a motor vehicle, possessing a variator ( 2, 2 ′) with a primary V-pulley set ( 3, 3 ′) and a secondary V-pulley set ( 4, 4 ′). In this arrangement are...
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6846255 |
Pressure feed to a shaft
A pressure feed in a shaft ( 1 ) of a transmission with a hydraulic or pneumatic control device through which the pressure feed can be acted upon with the pressure medium, with a gearbox ( 2 ), in...
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6840875 |
System for adjusting the contact pressure of a continuously variable gear
A system ( 10 ), in particular an electrohydraulic system ( 10 ), for adjusting the contract pressures of a continuously variable gear, in particular a double-cone pulley belt-contact gear, which...
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6840876 |
Variator
A variator for ratio adjustment of a continuously variable chain drive transmission having one variator shaft ( 1 ) and one variator pulley ( 2 ) supported upon the variator shaft ( 1 ) and axially...
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6835147 |
Hydraulic pressure controller for automatic transmission
A hydraulic controller of an automatic transmission which releases the lockup clutch when it fails. An output port of a solenoid valve is connected to a port of a lockup control valve and a port of...
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6832965 |
Speed change control apparatus for continuously variable transmission
A continuously variable transmission having a primary pulley and a secondary pulley on which a belt wound on the primary pulley is fitted. The width of the groove on the primary pulley is adjusted...
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6824483 |
Control system for continuously variable transmission and continuously variable transmission wherein such is utilized
A control system for a continuously variable transmission and continuously variable transmission wherein such is utilised, includes a drive belt located between pulley discs of a first pulley and...
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6739994 |
Control system for a continuously variable v-belt transmission
A continuously variable transmission, having a first pair of conical disks including an axially moveable disk and an axially non-movable disk whereby a running radius of the first pair of disks is...
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6723014 |
Control device of continuously variable transmission
A transmission mechanism of continuously variable transmission in a vehicle comprises a primary pulley and a secondary pulley provided with a first cylinder chamber and a second cylinder chamber,...
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6712724 |
Belt-type continuously variable transmission
A belt-type CVT is comprised of a driving pulley and a driven pulley each of which has having a transmission piston chamber and a clamp piston chamber. An effective cross sectional area of the...
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6688999 |
Method and device for controlling a drive-line including a CVT
The invention describes a method and a device for controlling a drive train of a motor vehicle with a drive assembly and a continuously variable automatic transmission with a variable speed gear,...
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6682451 |
Hydraulic control for a continuously variable transmission
A hydraulic controller ( 10, 10 a , 10 b ) for a continuously variable transmission ( 12 ) is proposed. Using a pump ( 42 ), the delivery chambers ( 24, 26 ) of a first and second adjusting device...
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