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Title: Automatic transmission

Abstract

An automatic transmission is described combining a stator reversing type torque converter and speed changer having first and second sun gears comprising: (a) a planetary gear train composed of first and second planetary gears sharing one planetary carrier in common; (b) a clutch and requisite brakes to control the planetary gear train; and (c) a speed-increasing or speed-decreasing mechanism is installed both in between a turbine shaft coupled to a turbine of the stator reversing type torque converter and the first sun gear of the speed changer, and in between a stator shaft coupled to a reversing stator and the second sun gear of the speed changer.

Inventors:
Publication Date:
OSTI Identifier:
5032670
Patent Number(s):
US 4724720
Assignee:
Kabushiki Kaisha Daikin Seisakusho, Osaka NOV; NOV-88-006550; EDB-88-103275
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 3 Feb 1986
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; MECHANICAL TRANSMISSIONS; CONTROL EQUIPMENT; DESIGN; AUTOMATION; GEARS; OPERATION; STATORS; TORQUE; VELOCITY; EQUIPMENT; MACHINE PARTS; 330602* - Vehicle Design Factors- Engine-Transmission Matching

Citation Formats

Ohkubo, M. Automatic transmission. United States: N. p., 1988. Web.
Ohkubo, M. Automatic transmission. United States.
Ohkubo, M. 1988. "Automatic transmission". United States. doi:.
@article{osti_5032670,
title = {Automatic transmission},
author = {Ohkubo, M.},
abstractNote = {An automatic transmission is described combining a stator reversing type torque converter and speed changer having first and second sun gears comprising: (a) a planetary gear train composed of first and second planetary gears sharing one planetary carrier in common; (b) a clutch and requisite brakes to control the planetary gear train; and (c) a speed-increasing or speed-decreasing mechanism is installed both in between a turbine shaft coupled to a turbine of the stator reversing type torque converter and the first sun gear of the speed changer, and in between a stator shaft coupled to a reversing stator and the second sun gear of the speed changer.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1988,
month = 2
}
  • This patent describes an automatic transmission system for a vehicle, comprising a main transmission unit which can be set to any one of speed stages, an auxiliary transmission unit which is connected in series with the main transmission unit and can be selectively set to either a first speed reduction ratio or a second speed reduction ratio substantially larger than the first speed reduction ratio. A means for manually controlling the auxiliary transmission unit selects either first speed reduction ratio or the second speed reduction ratio. The transmission control system comprises: (a) a means for controlling the main transmission unitmore » automatically to provide each selected one of speed stages according to operational conditions of the vehicle; and (b) a means for controlling the auxiliary transmission unit to override the manual control means in a manner only to prevent shifting of the auxiliary transmission unit to the second speed reduction ratio according to vehicle speed; throttle opens in accord with speed stages the main transmission unit is set. The override means includes means responsive to a specific combined range of vehicle speeds and throttle openings for each of the speed stages.« less
  • This patent describes a multispeed automatic transmission system for vehicles having transmission gears which shift from low to high to low in response to the acceleration and deceleration of the vehicle wherein a vacuum modulator control is mounted in the vacuum line between the vacuum modulator and the intake manifold. The improvement described here is in the vacuum modulator control. The control is adapted for mounting at any desired location in the engine compartment comprising a cylinder, a piston slidably positioned in the cylinder. The cylinder has a front end face and a rear end face and a peripheral surface.more » A resilient means is in the cylinder for urging the piston toward one of the end faces and a stop means in the cylinder remote from the resilient means limits the amount of movement of the piston in the cylinder. A first port communicates with the interior of the cylinder through the peripheral surface, the first port communicating with the vacuum modulator, second and third ports communicating with the interior of the cylinder through the peripheral surface. The second and third ports communicate with the intake manifold whereby during deceleration air flows into the cylinder through the first port and exits from the cylinder through the second and third ports with the piston being urged against the resilient means and whereby during acceleration air flows into the cylinder through the second and third ports and exits from the first port with the piston being urged away from the resilient means.« less
  • A transmission is described comprising: an input shaft operatively connected with a source of rotational energy; a first intermediate shaft arranged to be coaxial with the input shaft; a first clutch for selectively providing a drive connection between the input shaft and the first intermediate shaft; a second intermediate shaft arranged to be coaxial with the input shaft; a second clutch for selectively providing a drive connection between the input shaft and the second intermediate shaft; a countershaft arranged to be parallel with the input shaft; a first group of intermeshing input and output gears arranged between the first intermediatemore » shaft and the countershaft to provide a first predetermined speed change ratio; a second group of intermeshing input and output gears arranged between the second intermediate shaft and the countershaft to provide a second predetermined speed change ratio; output means for connection with the countershaft to transmit power from the countershaft to an external drive means; a primary means which comprises a first input gear rotatably disposed about the first intermediate shaft, a first synchronizer-clutch arranged between the first input gear and the first intermediate shaft to selectively connect and disconnect the first input gear and the first intermediate shaft and a first output gear secured to the countershaft and constantly meshed with the first input gear to rotate therewith; a secondary means which comprises a second input gear rotatably disposed about the second intermediate shaft, a second synchronizer-clutch arranged between the second input gear and the intermediate shaft to selectively connect and disconnect the second input gear and the second intermediate shaft and a second output gear secured to the countershaft and constantly meshed with the second input gear to rotate therewith.« less
  • This patent describes an automotive vehicle having driven wheels comprising an engine a transmission having an input member drivingly connected with the engine and an output member drivingly connected with the driven wheels. The transmission includes frictional element means for interrupting a power delivery path between the engine and the driven wheels; a source of pressurized fluid; a manual valve communicating with the source of pressurized fluid and the fractional element means. The manual valve is shiftable to a forward drive position wherein the manual valve establishes a fluid feed line through which the pressurized fluid is supplied to themore » frictional element means from the source of pressurized fluid, a neutral position wherein the manual valve establishes an elongate handle member; an elongate guiding track member for a terminal portion of a coaxial cable to be stripped. The guiding track member exposes a part of the surface of the insulating sheathing of an inserted cable for treatment and extends between a first end, attached to the handle member, and a second end, remote from the handle member; an elongate knife holder movably attached to the guiding the engine as long as the engine speed is higher than a first predetermined value after a predetermined operating state of the automotive vehicle has been established.« less
  • A transmission is described, comprising: an input shaft operatively connected with a source of rotational energy; a first intermediate shaft rotatably disposed about the input shaft; first clutch means for selectively providing a drive connection between the input shaft and the first intermediate shaft; a second intermediate shaft rotatably disposed about the input shaft; second clutch means for selectively providing a drive connection between the input shaft and the second intermediate shaft; an output shaft; a first input gear located between the first and second intermediate shafts and arranged to rotatable with respect to the input shaft; a first outputmore » gear on the output shat, the first output gear being arranged to be in constant means with the first input gear; a first group of intermeshing input and output gears; comprising a second group of intermeshihg input and output gears; and synchronizer means for selectively connecting input and output gears with the input shaft, the first and second intermediate shafts and the output shafts in a manner for selectively producing a predetermined number of speed change ratios between the input and output shafts.« less