Matches 1 - 50 out of 203 1 2 3 4 5 >
Match Document Document Title
7524267 Control apparatus for vehicular automatic transmission  
In a hydraulic control apparatus for a vehicular automatic transmission, if it is determined that there is a failure that may cause tie-up in an automatic transmission, communication is provided...
7497799 Torque transmitting mechanism engagement control system and method  
A control system operable to engage a torque transmitting mechanism, the control system having at least one variable bleed solenoid valve operable to selectively provide pressurized fluid to...
7464618 Hydraulic control apparatus for an automatic dual clutch transmission  
A hydraulic control apparatus and method of controlling it for an automatic dual clutch transmission, which includes a first clutch with a first partial transmission and a second clutch with a...
7416515 Engine torque control device  
An engine torque control device is configured to lessen shift shock while shortening the shift time during downshifting with an automatic transmission. When a downshift requirement is generated, a...
7390285 Hydraulic control system of automatic transmission for vehicle  
A hydraulic control system of an automatic transmission that precisely control is operating hydraulic pressure supplied to a frictional element during shifting and can eliminate oil leak under a...
7384375 Apparatus for controlling an automatic transmission  
When a charge control is applied to a clutch during a shifting operation of an automatic transmission, a charge counter of this clutch is set to a predetermined value. When a drain control is...
7357754 Mechanism and method of controlling an automatic shifting power transmission to effect a first gear launch  
The present invention provides a mechanism and method of launching a vehicle using a conventional automatic shifting power transmission. By slipping a first gear reaction clutch during a launch, an...
7344477 Up shift control with overrunning clutch  
An automatic transmission for a vehicle includes a multi-plate clutch having an applied state and a released state and an overrunning clutch having an engaged state and an overrunning state. In...
7318789 Hydraulic control system for automatic transmission  
An automatic transmission has an electronic control unit and a hydraulic control unit. The electronic control unit outputs an engagement command pressure to a solenoid disposed in a hydraulic...
7306543 Automatic transmission controller  
An automatic transmission controller has an electronic control circuit, an electromagnetic valve, and a pressure control valve. The electronic control circuit generates a control current. The...
7291092 Shift control apparatus and method for automatic transmission  
In shift control apparatus and method for an automatic transmission in which an engine speed is inputted, and a shift change in a shift stage of the automatic transmission is performed to make a...
7282012 Electronic adaptive swap-shift control for an automatic transmission for automotive vehicles  
A control system and control method for a swap-shift transmission having auxiliary and main gearsets wherein precise synchronization control of ratio changes of each gearset at the start and at the...
7194348 High acceleration time shift control apparatus and control method for vehicle  
A high acceleration time shift control apparatus and method for a vehicle is provided. The high acceleration time shift control apparatus includes a transmission which achieves plural shift speeds...
7115069 Electronic adaptive swap-shift control for an automatic transmission for automotive vehicles  
A control system and control method for a swap-shift transmission having auxiliary and main gearsets wherein precise synchronization control of ratio changes of each gearset at the start and at the...
7077777 Continuously variable transmission  
A continuously variable transmission has: an input shaft, an output shaft, a toroidal type continuously variable transmission, and a planetary gear mechanism including a sun gear, a ring gear and a...
7066862 Method for a shift control of a power shift transmission  
A method for a shift control of a power shift transmission includes closing an incoming, engaging clutch unit assigned to a new gear and opening the outgoing, disengaging clutch unit assigned to an...
7056263 Electronic clutch-to-clutch transmission control system  
A transmission system includes a first clutch, a second clutch, and a controller. The controller communicates with the first and second clutches and commands a gear shift. The controller calculates...
7048673 Shift control method for six-speed automatic transmission  
A shift control method for a gearset with greater than or equal to 5 speeds, allowing to perform a sequential shift and a multi-skip shift in relation to the multi-shift stages, contributing to an...
6997843 Shift control apparatus for automatic transmission  
In a shift control apparatus for an automatic transmission, there is provided a target speed change permitting means which; at the time of a dual changeover shift which is a shift from an Nth speed...
6969340 Control apparatus and control method for automatic transmission  
A control apparatus and method for an automatic transmission, by which a shift is executed by simultaneously controlling release and application of different friction engaging elements, are...
6955629 Shift control apparatus for an automatic transmission  
A shift control apparatus has first, second, third and fourth engagement elements, and a shift control processing unit engaging the first and the second engagement elements in order to realize a...
6887183 System and method of controlling automatic transmission  
In a system for controlling an automatic transmission, an ECU is constructed to carry out changeover control in accordance with shift determination from second speed to first speed to achieve...
6755091 Transmission and method for controlling a transmission for a motor vehicle  
A transmission, in particular an automated shift transmission, includes a plurality of selectable and deselectable gear stages for implementing gear changes. The selection and deselection of the...
6718247 Control method and system for an infinitely variable automatic automobile transmission  
In the method, the transmission ratio of the speed transmission (i_act) is set automatically using stored adjustment characteristic curves, as a function of a variable (FP, tv) which characterizes...
6699156 Method for controlling a transmission of a vehicle  
Described is a method for the control of a transmission of a motor vehicle, especially an automatic transmission, with hydraulically activated shifting elements. The shifting elements are shifted...
6676567 Speed change completion degree estimating system of automatic transmission and speed change control device using same  
An automatic transmission is driven by an engine through a torque converter. The transmission includes a plurality of friction elements which are selectively engaged to provide a selected gear...
6638196 Shift control apparatus of automatic transmissions  
A shift control apparatus is arranged to effect a shift in an automatic transmission by changeover of friction elements to be engaged with disengagement of a disengagement-side friction element and...
6634990 Method of controlling hydraulic pressure in speed change mechanism having hydraulic clutches  
A speed change mechanism ( 1 ) constructed by connecting in tandem a hydraulic type speed change unit ( 17 ) having a plurality of hydraulic clutches ( 57, 58, 59 ) to be alternatively engaged and...
6634989 Power off upshift control method for automatic transmission  
A power Off upshift control method for an automatic transmission includes the steps of: a) determining if a vehicle is under conditions requiring power Off upshift control; b) starting power Off...
6623404 Reshift control system for automatic transmission  
When a reshift request for a second shift to a second gear ratio is produced during a first shift operation to a first gear ratio in an automatic transmission, a reshift control apparatus performs...
6616560 Shift control apparatus for automatic transmission  
A shift control apparatus that advances activation of an engagement element to be engaged during a shift requiring engagement and release of four engagement elements, thereby reducing the shift...
6572510 Control device of automatic transmission  
In a process wherein a before-shifting gear ratio Gx changes to a gear ratio of the target gear position, an actual shift time is measured by regarding as a shift starting point an earlier one...
6517459 System and method of determining completion of piston stroke in automatic transmission  
An automatic transmission includes a low reverse brake and a reverse clutch that are engaged at different timings to determine a selected gear position, the reverse clutch being engaged immediately...
6511400 Control system for vehicular automatic transmission  
A control system for executing an upshift from an off-going speed ratio to an on-coming speed ratio by controlling the release of the hydraulic pressure from the frictionally engaging element used...
6503172 Control unit and control method of automatic transmission and automotive vehicle  
In a control unit of an automotive vehicle, it is possible to securely prevent a tie-up due to a miss-recognition of a disengage timing of a disengage side friction device, securely prevent an...
6503165 Hydraulic control device for automatic transmission  
A hydraulic control device for an automatic transmission capable of preventing engine racing and tie-up by controlling disengagement side oil pressure in accordance with an input torque and an oil...
6449548 Automatic transmission shift control  
An automatic transmission ratio shift control system and method for a powertrain having a throttle-controlled engine and multiple-ratio gearing, torque flow paths through the gearing being...
6435049 Transmission shift control method  
A method of controlling, in response to a shift command, a commanded shift of a powershift transmission of an engine-driven vehicle includes monitoring speeds transmission component selected...
6390949 Apparatus for controlling frictional coupling device to effect vehicle transmission upshift while accelerator pedal is not in operation  
An apparatus for controlling a vehicle automatic transmission, wherein a moment at which the supply of a pressurized fluid to a hydraulic cylinder for engagement of a frictional coupling device to...
6364811 Model-based transmission upshift control with engine torque management  
An improved control for an automatic transmission upshift, wherein the engine output torque and on-coming clutch pressure are coordinated during the shift based on an inverse dynamic model of the...
6361474 Closed-throttle downshift clutch control for an automatic transmission  
An improved control for an automatic transmission closed-throttle downshift, wherein closed-throttle engine torque is used to raise the transmission input speed to the synchronous speed of the...
6358184 Model-based control of an automatic transmission garage shift  
An improved control for an automatic transmission garage shift, wherein a dynamic model of the transmission is used to estimate the transmission input torque during the shift and to schedule the...
6346063 Vehicle transmission shift control for engagement of frictional coupling device so as to first raise transmission input speed above synchronizing speed  
An apparatus for controlling an automatic transmission of an automotive vehicle, which is shifted to a selected one of operating positions by an engaging action of a frictional coupling device,...
6334833 Control apparatus for automatic transmission and control method for automatic transmission  
With a specific shift pattern, a chronological aging of a clutch used in a friction engagement is judged and an obtained judgement result is reflected to other shifts to which the clutch...
6332860 Model-based on-coming clutch pressure control for an automatic transmission upshift  
An improved control for an automatic transmission upshift, wherein the on-coming clutch pressure (Ponc) is scheduled during the torque and inertia phases of the shift in accordance with the...
6319172 Off-going clutch control for upshifting of an automatic transmission  
An improved transmission upshift control in which the off-going clutch is controlled to emulate the behavior of an ideal free-wheel device to thereby achieve nearly ideal timing of the off-going...
6299565 Control strategy for an automatic transmission  
An automatic control strategy for use with a multiple-ratio transmission in an automotive vehicle driveline in which the crankshaft of an internal combustion engine is connected directly to torque...
6287238 Forced downshift control method for automatic transmission  
A forced downshift control method for automatic transmissions, wherein, if shift signals of a forced 4-2 downshift are input, a first shift control solenoid valve (SCSV-A) is controlled to OFF; a...
6277047 Automatic transmission  
An automatic transmission comprises a friction engaging means having a plurality of first plates spline-fitted to a hub and a plurality of second plates spline-fitted to a drum and disposed in an...
6277049 Shift control system responsive to low oil temperature  
A shift control system executing a shift of an automatic transmission with a manual shift mode from a first speed position to a second speed position. A controller of the shift control system...
Matches 1 - 50 out of 203 1 2 3 4 5 >