Abstract: A deceleration control apparatus for a vehicle, which performs deceleration control on the vehicle by an operation of a brake system that applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, changes, as the deceleration control, the braking force applied to a non-driven wheel of the vehicle and the braking force applied to a driven wheel of the vehicle based on a deceleration F applied to the vehicle and an engine braking force Fe that acts on the driven wheel of the vehicle. The engine braking force includes inertia force and changes in the engine braking force produced by a shift, as well as engine braking force produced as a result of the accelerator being turned off.

Abstract: A control apparatus for a power train including a continuously variable transmission and a clutch arranged in series with the continuously variable transmission is provided in which an engaging pressure of the clutch is first reduced until a slip occurs, and is then increased after detection of the slip so as to re-engage the clutch, and an engaging pressure of the clutch to be established is calculated by giving an excess pressure to the engaging pressure at which the clutch is re-engaged, such that an excess amount of the transmitted torque of the clutch is set smaller than that of the continuously variable transmission. The control apparatus is adapted to determine a learned value as a correction value of the engaging pressure that is set in advance in accordance with an input torque applied to the clutch, based on the engaging pressure calculated by giving the excess pressure to the engaging pressure at which the clutch is re-engaged.

Abstract: A control system for controlling a belt-type continuously variable transmission having a pulley capable of varying its groove width to which a belt is applied, in which the pulley is provided with an oil chamber to which the oil pressure is fed so that the pulley clamps the belt, in which the capacity of the oil chamber is varied in accordance with a change in the groove width, and in which the oil pressure in the oil chamber is controlled in accordance with a deviation between a target oil pressure and an actual oil pressure, comprising: a pressure-receiving capacity change detecting device for detecting a change in the capacity of the oil chamber; and an oil pressure control contents altering device for altering a degree to reflect the deviation on the oil pressure control of the oil chamber on the basis of a change in the capacity.

Abstract: A deceleration control apparatus and method for a vehicle, which performs deceleration control on the vehicle by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, performs the shift operation and the operation of the brake system such that a target deceleration set based on a curvature or curvature radius of a curve in a road ahead of the vehicle, a distance to the curve, and a vehicle speed, acts on the vehicle. As a result, a desired deceleration according to the distance to the curve is able to be applied to the vehicle.

Abstract: A control system for a continuously variable transmission of a vehicle, in which a clamping pressure of rotary members to clamp a transmission member is learned and set in every operating state of a prime mover connected to an input side of the continuously variable transmission having those rotary members and transmission member.

Abstract: In a deceleration control method for a vehicle, by which deceleration control of the vehicle is performed based on a distance between the vehicle had an obstacle including a preceding vehicle ahead of the vehicle, a target deceleration at which the vehicle is to be decelerated is obtained based on the distance; a speed or speed ratio that will apply a deceleration equal to, or less than, the target deceleration to the vehicle is selected as the speed or speed ratio of a transmission of the vehicle during a shift operation; and the deceleration control is executed by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts the transmission of the vehicle into a relatively low speed or speed ratio.

Abstract: A declaration control apparatus and method for a vehicle, which performs deceleration control such that a deceleration acting on the vehicle becomes equal to a target deceleration by an operation of a brake system which applies a braking force to the vehicle and a shift operation which shifts a transmission of the vehicle into a relatively low speed or speed ratio, increases the target deceleration over time at a predetermined gradient to a predetermined value when a determination that there is a need to shift the transmission into a relatively low speed or speed ratio has been made, and after the target deceleration reaches the predetermined value, maintains the target deceleration at a generally constant value. As a result, a deceleration transitional characteristic of the vehicle is able to be improved.

Abstract: A control system of a power transmission mechanism, in which a transmission torque capacity between transmission members varies according to a pressure to be applied to the transmission members and in which the pressure to be applied to the transmission members is controlled on the basis of such a slip condition between the transmission members as accompanies the lowering of the pressure. The control system comprises: a pressure lowering device for lowering the pressure by a preset value; and a pressure setter for setting the pressure, in case the slip between the transmission members is not detected even by lowering the pressure by a preset value with the pressure lowering device, on the basis of the lowered minimum value of the pressure.

Abstract: 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 pulley, an output-side pulley, and a belt running between the input-side pulley and the out-side pulley; an input revolution detection sensor that detects a number of input revolutions of the input-side pulley; an output revolution detection sensor that detects a number of output revolutions of the output-side pulley; an input torque detection unit that detects an input torque to the input-side pulley; a reference clamping pressure computing unit that computes a reference clamping pressure, based on the number of input revolutions detected by the input revolution detection sensor, the number of output revolutions detected by the output revolution detection sensor, and the input torque detected by the input torque detection unit; and a belt clamping pressure computing unit that computes the belt clamping pressure to be set

Abstract: A control apparatus for a power train including a continuously variable transmission and a clutch arranged in series with the continuously variable transmission is provided in which an engaging pressure of the clutch is first reduced until a slip occurs, and is then increased after detection of the slip so as to re-engage the clutch, and an engaging pressure of the clutch to be established is calculated by giving an excess pressure to the engaging pressure at which the clutch is re-engaged, such that an excess amount of the transmitted torque of the clutch is set smaller than that of the continuously variable transmission. The control apparatus is adapted to determine a learned value as a correction value of the engaging pressure that is set in advance in accordance with an input torque applied to the clutch, based on the engaging pressure calculated by giving the excess pressure to the engaging pressure at which the clutch is re-engaged.

Abstract: A control apparatus for controlling a drive mechanism including a continuously variable transmission and a clutch device torque capacities of which are variable and which are disposed in series with each other between a drive power source and drive wheel, the control apparatus including a clutch-torque-capacity adjusting portion for adjusting the torque capacity of the clutch device such that the clutch device is capable of transmitting an output torque of the drive power source, without a slipping action of the clutch device, and a transmission-torque-capacity adjusting portion for adjusting the torque capacity of the continuously variable transmission after the torque capacity of the clutch device has been adjusted by the clutch-torque-capacity adjusting means, such that the continuously variable transmission is operable without a slipping action thereof.

Abstract: A vehicle control system comprising a vehicle speed sensor for detecting the speed of a vehicle; a road situation storage device for storing road structures and conditions; a recommended gear stage determining device for determining a recommended gear stage of an automatic transmission on the basis of the vehicle speed and the road structures and conditions; a present position detecting device for detecting the present position of the vehicle; a present position recognizing device for recognizing the present position of the vehicle, as detected by the present position detecting device; a control content selecting device for evaluating at least one of the present position detecting device and the present position recognizing device to select the control content on the basis of the evaluation result; and a speed change processing device for changing the speed in accordance with the control content selected by the control content selecting device.

Abstract: A vehicle control system comprising a vehicle speed sensor for detecting the speed of a vehicle; a recommended gear stage determine device for determining a recommended gear stage of an automatic transmission based on the vehicle speed and road situation; an upper limit gear stage set device for setting an upper limit gear stage on the basis of the recommended gear stage; and a shift device for changing the speed at the upper limit gear stage. The recommended gear stage determine device includes a suppress device for suppressing the number of determinations of the recommended gear stage at a corner.

Abstract: A control system for a vehicle includes a route information detector, which detects route information for the vehicle, and behavior control system, which is controlled by the route information detector and which controls the behavior of the vehicle. The control system also includes a means for detecting the accuracy of the detection of the route information, and a changing controller which changes the control of the behavior control system based on the accuracy of the detection of the route information. In this case, the behavior control system can be a transmission, a suspension system, a brake system, a steering system, an engine, or an auto drive control system. The behavior control system is controlled by control patterns that can be changed by a changing controller.

Abstract: A control system for an automatic transmission includes a route information detector which detects route information for the vehicle and a transmission which is controlled by the route information detector. The control system also includes a device for detecting the places where it is necessary to decrease speed in the determined traveling distance, a device for calculating the vehicle target speed for each corner, a device for calculating the required vehicle speed at the present position of the vehicle to decrease present vehicle speed to the vehicle target speed for the place where it is necessary to decrease speed. And if the target deceleration from the present speed to the required vehicle speeds lager than a threshold value, the place is regarded as the target place, and it is counted as the target place, and the automatic transmission is shifted down.

Abstract: The present invention offers a control device for an automatic transmission mounted on a vehicle which prevents a shock caused by sudden working of a one-way clutch, when the vehicle accelerates after a deceleration near an intersection or in an intersection. The control device includes an automatic transmission having at least a one-way clutch and achieving a down-shift by applying the one-way clutch, a driving environment detector, a low speed condition detector, and a prohibition means. The driving environment detector detects a driving environment of a vehicle including the automatic transmission. The low speed condition detector detects when the vehicle approaches or enters into a place indicative of a down-shift of the automatic transmission, and the prohibition means prohibits a down-shift caused by applying the one-way clutch when the low speed condition detector detects that the down-shift is indicated.

Abstract: A control system for a transmission, comprises a shift control function to output a shift instruction signal on the basis of a predetermined shift pattern and a road data detecting function to detect the road data of a route to be followed by a vehicle. This control system further comprises a start detecting function to detect the start of the vehicle; and a shift pattern control function to set a shift pattern for a curve, as having a control content for making it liable to set a larger gear ratio, as the shift pattern when the vehicle start is detected by the start detecting function and when a curved road is detected in the route to be followed, by the road data detecting function.

Abstract: In an automatic transmission, torque shocks are effectively reduced in specific downshifting conditions where relatively strong engine braking occurs as a result of downshifting. When a downshift command to the automatic transmission is detected when an accelerator pedal is not depressed, a valve opening command is issued to a throttle valve so that engine output will have increased by the time the downshifting action of the automatic transmission actually begins, ignition timing is delayed so that an increase in engine output resulting from the opening of the throttle valve by a throttle valve control means is offset for a period starting at the time the engine output actually increases as a result of the opening of the throttle valve by the throttle valve control means and ending at the time the downshifting action of the automatic transmission actually beings, and the ignition timing delaying is cancelled upon initiation of the downshifting action of the automatic transmission.

Abstract: A lock-up clutch slip control system for controlling a lock-up clutch, which is arranged in parallel with a hydraulic power transmission for connecting a prime mover and a speed change unit, selectively into a slip state. It is decided whether or not a slip control of changing the lock-up clutch from a complete apply state to a slip state is to be executed according to the operation of lowering the output of the prime mover. The output of said prime mover is changed to suppress the output fluctuation of the prime mover when it is decided that the slip control of the lock-up clutch is to be executed.

Abstract: It is an object of the invention to provide a shift control apparatus which does not cause a vehicle driver to feel uncomfortable when shift control means resumes normal shift control using a predetermined shift pattern. Where return-to-normal determining means 105 determines that a condition or conditions under which the shift control means 102 resumes shift control using a MEDIUM MODE shift pattern is/are satisfied, return-to-normal permitting means 116 permits the shift control means 102 to resume the shift control using the MEDIUM MODE shift pattern when an output control member release determining means 108 determines that an accelerator pedal 58 has been released. In this arrangement, the driver does not feel uncomfortable even if the transmission is shifted up immediately after the shift control means 102 resumes the shift control using the MEDIUM MODE shift pattern.