摘要:
An apparatus for controlling an automatic transmission of an automobile and a method therefor utilize a route guidance system. The apparatus includes a memory which stores road information, a detector for detecting a specific position which is located on a planned driving route from the road information stored in the memory; a position detector for detecting the present position of the automobile; a speed detector for detecting the speed V of the automobile; a sensor for detecting an opening degree .theta. of a throttle of the automobile; a computer for computing a distance "d" between the detected automobile position and the detected specific position; a driving operation detector for detecting an operation by the driver of the automobile; a first gear ratio selecting device for selecting a first gear ratio for the automatic transmission based on the detected speed V and the detected throttle opening degree .theta.; and a second gear ratio selecting device for selecting a second gear ratio based on the detected speed V, the distance "d", the detected operation by the driver and the first gear ratio selected by the first gear ratio selecting device. As a result, it is possible to carry out gear change control taking anticipated changes in the driving conditions into account, thus enabling smooth and comfortable driving. Further, since the driver of the automobile can have advance voice notice of control operations, it is possible to avoid confusion caused by sudden unexpected changes.
摘要:
A vehicle control device controls an automatic transmission by utilizing road information stored in a navigation system unit. In response to the road information stored in a data memory, the upper-limit of a shiftable transmission speed range is determined, thereby allowing shift-change only within the restricted transmission range. The actual down-shift is carried out after confirming a decelerating operation by the driver, such as release of the accelerator pedal, thereby providing favorable transmission control in conformity with the driver's intention.
摘要:
A vehicle, which is either an electric vehicle or a hybrid vehicle, capable of achieving low-pollution emissions and saving energy by maximizing use of the capacity of the battery. A navigation ECU receives input identifying a starting location where the battery is charged, a stopover location, and a destination where battery recharging is planned, and calculates travel distances from the starting location to the stopover location and to the destination based on geographic data for the starting location, the stopover location and the destination, and schedules electric power consumption corresponding to distance travelled, based on the respective calculated distances, to assign a battery residual capacity usage value for each leg of the trip. A vehicle ECU supplies electric power from the battery to the motor in accordance with that schedule.
摘要:
A hybrid vehicle capable of efficiently regenerating a battery when the driving route is previously defined and of decreasing exhaust gases. A controller calculates a battery stored residual charge from the output of a battery current voltage detection sensor, sets a target value for the battery residual charge in accordance with road information and information of the present location of the vehicle, received from a navigation processor, and adjusts the outputs of a motor and an engine to cause the actual battery residual charge to approach the target value.
摘要:
In a linkage through which a manual selector is connected to a manual valve are a power unit and a connecting/disconnecting mechanism. In "P", "R", and "N", the connecting/disconnecting mechanism is connected and the power unit is made inoperative, whereby a movement of the manual selector is mechanically transmitted directly to the manual valve. In other shifts including manual shifts, the connecting/disconnecting mechanism is disconnected and the manual valve is operated directly by the power unit in accordance with positions of the selector lever.
摘要:
A vehicle has a rotary magnetic field member which is rotatably supported at a position near the surface of a roadway along which the vehicle runs and rotatingly driven by a driving device. The rotary magnetic field member has magnetic poles of different polarities alternately arranged around its circumference. The vehicle also has an electrical power collector for receiving electrical power from an electrical power supply associated with the roadway. The received electrical power is supplied under the control of a controller to the driving device thereby rotatably driving the rotary magnetic field member. The rotary magnetic field member when rotated relative to the roadway made of an electrically conductive non-magnetic material, forms a varying magnetic field in cooperation with the roadway, thereby generating propulsion force for propelling the vehicle and force for suspending the vehicle, so that the vehicle is propelled in a floating state. It is therefore possible to reduce friction between wheels of the vehicle and the roadway and, hence, to suppress wear of the wheels. In a high-speed transportation system of the invention, the electrical power collector picks up electrical power from the electrical power supply and the rotary magnetic field member is rotatingly driven by the power picked up by the electrical power collector.
摘要:
A manual speed selector of an automatic vehicle transmission in which a line pressure is supplied from a manual valve capable of being changed over a shift lever to control solenoid valves so as to selectively supply hydraulic pressure to frictional engagement devices by shift valves. The shift lever can be moved between an automatic shift mode position and a manual shift mode position, and a transitive position is provided between these two mode positions. At the transitive position, the manual valve is set in a position such as to enable supply of hydraulic pressure, and the transmission can be set in a neutral state by controlling the solenoid valves. If the preceding shift lever position is neutral, the neutral state can be maintained or, when the shift lever is in the transmissive position, the neutral state can be set according to the time for which the shift lever is continuously placed in the transitive position and to the vehicle speed.
摘要:
Described herein is a hydraulic control system for vehicular automatic transmission, including an accumulator back pressure control circuit which is provided between a line pressure conduit and a back pressure supply conduit, and comprises a first accumulator control valve for dropping the line pressure according to the throttle opening, and a second accumulator control valve receiving an input pressure commensurate with the throttle opening and dropping the output pressure of the first accumulator control valve according to the throttle opening to apply to the piston of the accumulator a back pressure varying in corresponding to the engine output shaft torque.
摘要:
Pulleys are provided with load cam mechanisms which exert axial forces corresponding to transmitted torque, and actuator means such as ball screw mechanisms which shift the movable sheaves of both pulleys in axial direction, wherein the axial forces occuring at the pulleys are carried by their shafts and do not act on the housing. A counter shaft is located between the primary and secondary shafts, the countershaft being rotated to drive the actuator means through gearing such as gearwheels, to alter the drive ratio. During power transmission, the axial forces acting on the movable sheaves of primary and secondary pulleys are converted into torque by the actuator means, where the torques are transmitted to the counter shaft in the form of counteracting torques, so that alteration of drive ratio can be made with slight effort on the counter shaft, equivalent ot the difference between the counteracting torques.By using a non-uniform cam mechanism for the actuator means, or by using non-circular gearwheels for the gearing, the displacements of the movable sheaves are matched with their proper displacements determined by the belt.
摘要:
An automatic four-wheel drive transfer case according to this invention comprises a differential gear connected to the output shaft of a transmission, said differential gear having first and second side gears and a casing, a clutch arranged coaxially with the output shaft for releasably engaging the casing of the differential gear with the side gears thereof, the first side gear being connected with a rearwheel drive output shaft which is arranged on the extension of the output shaft of the transmission, the second side gear being connected with an intermediate shaft arranged coaxially with the output shaft of the transmission, a selective gearing for selectively engaging the second side gear with a front-wheel drive output shaft to change over between two-wheel drive and four-wheel drive, and a clutch control which receives a signal indicating the position of the selective gearing and signals representing the revolution speed of the front-wheel drive output shaft and/or the rear-wheel drive output shaft so as to selectively control the operation of the clutch, whereby the clutch control engages the clutch in two-wheel drive, and in four-wheel drive it engages the clutch when the vehicle speed is below a predetermined level or when the difference in the revolution speed between the front- and rear-wheel drive output shafts is greater than a predetermined value.