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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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7575528 |
Continuously variable transmission
A continuously variable transmission having an input cone pulley pair and an output cone pulley pair linked by and an encircling mechanism. One pulley of each pair is axially fixed and one pulley...
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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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7445572 |
Hydraulic pressure control apparatus and method for continuously variable transmission
In hydraulic pressure control apparatus and method for a continuously variable transmission, a line pressure of the continuously variable transmission is developed with a working oil supplied from...
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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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7294075 |
Device and method for setting belt clamping pressure
A belt clamping pressure setting device includes: a belt clamping pressure setting unit that sets a belt clamping pressure of a continuously variable transmission that includes an input-side...
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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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7258636 |
Method and apparatus for performing a slippage regulation in a continuously variable transmission
A method and apparatus for carrying out a drive belt slippage regulation in a continuously variable transmission. A driving disk set and a driven disk set are connected together for torque transfer...
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7258182 |
Device and method for continuous regulation of the erection of a tandem axle
The present invention relates to a device for continuously regulating the erection of a tandem axle of a vehicle or a self-moving working machine having a vehicle frame and at least one drive axle,...
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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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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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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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7217205 |
Compact inline longitudinal CVT
A series inline continuously variable transmission (SICVT) in which two series coupled continuously variable transmissions are in an inline configuration is provided to be used in rear-wheel drive...
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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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7201684 |
Speed-changing hydraulic pressure control system for belt-type continuously variable transmission
A belt-type continuously variable transmission having a forward clutch is incorporated with a speed-changing hydraulic pressure control system. The control system includes an engaging pressure...
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7192372 |
Hydraulic pressure sensor failure control system for belt-type continuously variable transmission
In case a primary hydraulic pressure sensor is normal, when reverse rotation of pulleys is detected a primary pulley (Plpri) torque capacity is calculated from a primary pressure detected by the...
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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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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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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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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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7044873 |
Belt-type continuously variable transmission
A continuously variable transmission includes: (a) a drive pulley and a driven pulley in which the pulley width between a fixed disk and a movable disk may be varied in accordance with oil...
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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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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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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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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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6958024 |
Automotive V-belt nonstage transmission
An automotive V-belt nonstage transmission includes a drive pulley having a fixed sheave fixedly mounted on a drive shaft, a movable sheave mounted on the drive shaft, a return coil spring, a...
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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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6887174 |
Hydraulic pressure control apparatus
A hydraulic pressure control apparatus has an actuator for controlling an automatic transmission. A case for receiving the actuator is constituted by an upper case, a lower case and a plate...
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6881165 |
Hydraulic control apparatus of vehicle and control method
A first hydraulic pump and a second hydraulic pump are respectively mounted to both ends of a rotary shaft in an electric motor, whereby it is possible to drive both of the first hydraulic pump and...
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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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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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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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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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6813551 |
Control apparatus for continuously variable transmission
Estimated change in operating fluid volume within a primary fluid chamber over a predetermined period of time during gear change operation is calculated using a physical model. On the other hand,...
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6749530 |
Belt-type continuously variable transmission
The rigidity of a movable pulley half is enhanced by the rigidity of a cylinder fixed to a back surface of the movable pulley half and influences of a controlled hydraulic pressure and a...
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