摘要:
A mesh-type automatic transmission includes a power input shaft for introducing power of an engine, a plurality of transmission gears, a plurality of cogged clutches, a power output shaft for outputting driving force, a counter shaft, and a plurality of counter gears, for transmitting power of the engine to the power output shaft by rotating the power input shaft with the power of the engine, rotating the counter shaft, and transmitting rotation of the counter shaft to the power output shaft with automatic gear change by engaging and disengaging the cogged clutches to one of the transmission gears corresponding to the speed. The counter shaft is provided with an assist mechanism for transmitting rotational force of the power input shaft to the power output shaft by transmitting rotation of the counter shaft via the assist gear, during the period of disengagement of a gear to the engagement of a new gear during gear change.
摘要:
A control device for giving an existing gear type transmission a parking lock function to lock a vehicle; a control method thereof; and an automobile having an improved transmission. The gear type transmission comprises a gear type speed change mechanism (5) provided with a mesh type clutch (3), and a second friction clutch (4) installed between the shafts of the speed change mechanism to enable torque transfer during shifting. A parking demand detecting means (9) detects the driver's parking demand. And, when it detects the driver's parking demand, a control device (10) sends an instruction signal to an actuator to instruct the latter to engage both the mesh type clutch (3) and the second friction clutch (4).
摘要:
At the time of the change-speed, by correcting the torque reducing portion of an output shaft during the change-speed, the revolution number of an input shaft is controlled on the basis of the corrected torque reduction correcting value. Also, the torque of said input shaft is adjusted at the end of the change-speed on the basis of said torque correcting value.
摘要:
A method and system for controlling creep in an automatic transmission, comprising a first creep torque control means which, upon generation of an accelerator- and brake-pedal undepressed state in a running mode, generates a target creep speed, the target creep speed increasing as a function of time and settling to a predetermined value, the first creep torque control means then calculating a creep torque from the target creep speed, detecting a change in vehicle load from a speed deviation, correcting a target creep torque on the basis of the detected change in vehicle load, and controlling the engine torque on the basis of the correction, and a second creep torque control means which controls a transfer torque of a starting clutch (a first friction clutch) on the basis of a slipping speed of the starting clutch and the target creep torque, the creep controlling method and system being able to realize a stable creep running even against a change in running environment such as the existence of a slope or an increase of payload while suppressing wear and heat generation of the friction clutch.
摘要:
An automatic transmission has a first axis (input axis) 102 for inputting the power, a second axis (output axis or couner axis) 103 for outputting the driving force source, at least one or more first gear group which consists of drive gears 111, 112 fixed on the first axis, and a driven gear 122 provided so as to engage or run idle with respect to the second axis with being engaged with the drive gear, and at least one or more second gear group which consists of driven gears 123, 124, 125 fixed on the second axis, and a drive gear 114, 115 provided so as to engage or run idle with respect to the first axis with being engaged with the driven gear. The automatic transmission further comprises a torque transferring mechanism 140 for transfering the torque between said driven gear which can run idle with respect to the second axis and the driven gear fixed to the second axis.
摘要:
A mesh type automatic transmission is equipped with a plurality of shift gears arranged to rotate freely to an output shaft for providing driving force to the wheels. Cogged clutches 12, 15 engage with the output shaft. Counter shift gears corresponding to each speed are fixed to a counter shaft rotated by the rotation of an input shaft and mesh with the shift gears for performing automatic shifting by controlling engagement of one of the cogged clutches with the voluntary shift gears determined from the accelerator command value and the vehicle speed. An assist mechanism transmits rotational force of the input shaft to the output shaft via the assist shaft which rotates from the rotation of the counter shaft when no cogged clutch of the plurality of cogged clutches is engaged with any of the plurality of shift gears occurring during switching when an engaged cogged clutch of the plurality of cogged clutches is disengaged and one of the cogged clutch of the plurality of cogged clutches is to be engaged.
摘要:
At the time of the change-speed, by correcting the torque reducing portion of an output shaft during the change-speed, the revolution number of an input shaft is controlled on the basis of the corrected torque reduction correcting value. Also, the torque of said input shaft is adjusted at the end of the change-speed on the basis of said torque correcting value.
摘要:
At the time of the change-speed, by correcting the torque reducing portion of an output shaft during the change-speed, the revolution number of an input shaft is controlled on the basis of the corrected torque reduction correcting value. Also, the torque of said input shaft is adjusted at the end of the change-speed on the basis of said torque correcting value.
摘要:
An apparatus and a method of controlling a vehicle is provided for correcting a lowered value of the torque of en output shaft in the gear shifting and suppressing a revolution speed of an input shaft on the basis of the lowered torque correction. The torque of the input shaft is adjusted at the termination of the gear shifting on the basis of the lowered torque correction.
摘要:
The present invention provides an apparatus and a method for controlling an automatic transmission of a motor vehicle having an engine and an automatic transmission including a clutch with an actuator for changing gear position comprising a detecting means for detecting a completion of the gear change and a signal generating means for generating a control signal to the actuator for applying continued pressure to the clutch for a predetermined time after the detection means detects the completion of the gear change.