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Title: Traction drive automatic transmission for gas turbine engine driveline

Abstract

A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.

Inventors:
 [1]
  1. Livonia, MI
Publication Date:
OSTI Identifier:
865014
Patent Number(s):
US 4449423
Assignee:
Ford Motor Company (Dearborn, MI)
DOE Contract Number:  
P1928150
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
traction; drive; automatic; transmission; gas; turbine; engine; driveline; transaxle; wheeled; vehicle; speed; torque; splitting; gearset; unit; converter; common; axis; transversely; arranged; respect; longitudinal; centerline; wheels; mounted; shaft; parallel; carry; final; driving; axle; shafts; embodiment; gearing; produces; overdrive; ratio; output; continuously; variable; range; ratios; produced; varying; position; rollers; starting; set; operation; engaging; lockup; clutch; joins; impeller; hydraulic; coupling; speed ratio; drive wheels; traction drive; automatic transmission; turbine engine; gas turbine; drive wheel; continuously variable; common axis; drive unit; axis transverse; speed range; torque converter; final drive; drive gearing; traction unit; speed ratios; /475/

Citation Formats

Carriere, Donald L. Traction drive automatic transmission for gas turbine engine driveline. United States: N. p., 1984. Web.
Carriere, Donald L. Traction drive automatic transmission for gas turbine engine driveline. United States.
Carriere, Donald L. Sun . "Traction drive automatic transmission for gas turbine engine driveline". United States. https://www.osti.gov/servlets/purl/865014.
@article{osti_865014,
title = {Traction drive automatic transmission for gas turbine engine driveline},
author = {Carriere, Donald L},
abstractNote = {A transaxle driveline for a wheeled vehicle has a high speed turbine engine and a torque splitting gearset that includes a traction drive unit and a torque converter on a common axis transversely arranged with respect to the longitudinal centerline of the vehicle. The drive wheels of the vehicle are mounted on a shaft parallel to the turbine shaft and carry a final drive gearset for driving the axle shafts. A second embodiment of the final drive gearing produces an overdrive ratio between the output of the first gearset and the axle shafts. A continuously variable range of speed ratios is produced by varying the position of the drive rollers of the traction unit. After starting the vehicle from rest, the transmission is set for operation in the high speed range by engaging a first lockup clutch that joins the torque converter impeller to the turbine for operation as a hydraulic coupling.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1984},
month = {1}
}

Patent:

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