摘要:
Vehicle control apparatus including a running stability controller for performing a predetermined operation for improving stability of running of the vehicle by reducing engine output, braking the vehicle, holding automatic transmission in a predetermined position or shifting up the transmission, for example, and a device for preventing an interference between the operation of the running stability controller and an operation of a device, such as the automatic transmission, a torque converter lock-up clutch and a differential limiting clutch, which device is provided in a power transmitting system and which is controlled by an appropriate controller.
摘要:
Vehicle control apparatus including a running stability controller for performing a predetermined operation for improving stability of running of the vehicle by reducing engine output, braking the vehicle, holding automatic transmission in a predetermined position or shifting up the transmission, for example, and a device for preventing an interference between the operation of the running stability controller and an operation of a device, such as the automatic transmission, a torque converter lock-up clutch and a differential limiting clutch, which device is provided in a power transmitting system and which is controlled by an appropriate controller.
摘要:
Vehicle control apparatus including a running stability controller for performing a predetermined operation for improving stability of running of the vehicle by reducing engine output, braking the vehicle, holding automatic transmission in a predetermined position or shifting up the transmission, for example, and a device for preventing an interference between the operation of the running stability controller and an operation of a device, such as the automatic transmission, a torque converter lock-up clutch and a differential limiting clutch, which device is provided in a power transmitting system and which is controlled by an appropriate controller.
摘要:
A shift control system of an automatic transmission sets a predetermined gear stage by applying a first frictional engagement element and releasing a second frictional engagement element. A pressure regulating mechanism regulates an oil pressure to be fed to or drained from the first frictional engagement element. A failure detector detects a failure of an apparatus to participate in the regulation and control of the oil pressure which is to be fed to or drained from at least one of the first and second frictional engagement elements. A gear stage inhibitor inhibits the setting of the predetermined gear stage if the failure is detected by the failure detector.
摘要:
An integral control system for an engine and an automatic transmission, in which the engine torque is reduced at a shifting time by the automatic transmission. The control system comprises a mechanism for limiting the engine torque to a predetermined value or less prior to the start of a shift by the automatic transmission when a predetermined condition is satisfied at the time of the shift. The engine torque is continuously reduced to a predetermined value by throttling the throttle opening gradually by a throttle valve mechanism till the start of an inertia phase in the shift; is reduced by further throttling the throttle opening by the throttle valve mechanism in accordance with the start of the inertia phase; and is gradually returned by increasing the throttle opening continuously by the throttle valve mechanism after the torque reduction control.
摘要:
A control system for an automatic transmission connected to an engine, in which a fundamental throttle opening is set with a predetermined delay characteristic from a depression stroke of an accelerator pedal and in which a present throttle opening is set with an inevitable delay and with a selective delay control for the fundamental throttle opening. A gear stage to be set in the automatic transmission is decided on the basis of the fundamental throttle opening, and an oil pressure to be fed to a frictional engagement unit for achieving a gear stage is set on the basis of the present throttle opening.
摘要:
A hydraulic control system for an automatic transmission to establish a predetermined stage by applying a first frictional engagement element and releasing a second frictional engagement element, comprising: a first hydraulic servo for actuating the first frictional engagement element; a second hydraulic servo for actuating the second frictional engagement element; change-over means for switching the feed of an oil pressure to the first hydraulic servo; signal pressure generating means for generating a signal pressure; and a pressure regulator valve for regulating the pressure to be fed to the second hydraulic servo. The pressure regulator valve includes: a first valve member having a first pressure receiving area to be fed with the signal pressure in one direction; a second valve member arranged coaxially with the first valve member and adapted to come into abutment against the first valve member in the other direction, the second valve member having a second pressure receiving area to be fed with the oil pressure to the first hydraulic servo in the other direction, when the oil pressure is fed by the change-over means; and bias means so disposed at the side of the second valve member axially opposed to the first valve member as to bias the second valve member into abutment against the first valve member.
摘要:
An integrated vehicle engine/transmission control apparatus for an automotive vehicle having an engine capable of changing an operating speed thereof by itself, and an automatic transmission operatively connected to the engine and including a lock-up clutch, the apparatus including a lock-up clutch control device operable to control an engaging force of the lock-up clutch, during a shifting action of the transmission, for reducing a shifting shock of said automatic transmission, and a engine speed control device operable to control the engine so as to reduce its operating speed, during the shifting action of the transmission, such that reduction of the engine speed is initiated after a moment of initiation of reduction of the engaging force of the lock-up clutch by the lock-up clutch control means.
摘要:
A shift control system for an automatic transmission, includes: a plurality of frictional engagement elements adapted to be hydraulically engaged for setting a plurality of gear stages; and a shift lever for switching between an automatic mode, in which a gear stage is set on the basis of the running state of a vehicle, and a manual mode in which a gear stage is selected by manipulating the shift lever. A shift detector detects that a gear stage should be selected for the shift in the manual mode state and a shift start timing adjuster, if the shift in the manual mode state is detected, the switching rate of the frictional engagement elements which are switched for executing the detected shift.
摘要:
A control system for an automatic transmission, which is capable of controlling the hydraulic pressures for frictional engagement units when a predetermined shift is performed such that a first frictional engagement unit is engaged and a second frictional engagement unit is released, being connected to a power source, the revolving speed of which is temporarily raised when a predetermined shift down is performed, the control unit for the automatic transmission for a vehicle being structured such that shift which is performed by engaging and releasing the two frictional engagement units is judged, whether the judged shift is shift down in which the revolving speed of the power source is temporarily raised or shift down in which the revolving speed of the power source is not raised is judged, and the contents of control of the hydraulic pressures for the frictional engagement units are changed between shift down in which the revolving speed of the power source is temporarily raised and shift down in which the revolving speed of the power source is not raised.