Title:
ELECTRONICALLY CONTROLLED SPEED REDUCTION GEAR FOR VEHICLE
Document Type and Number:
Japanese Patent JPS61244953
Kind Code:
A
Abstract:
PURPOSE:To prevent a fastening means from slipping and seizing due to start and rapid acceleration in a uniform high speed range, by providing a control means for disengaging the fastening means in accordance with a signals from a vehicle speed sensor and a range switch when the vehicle speed is lower than a set vehicle speed in the uniform high speed range. CONSTITUTION:There is provided a control means 8 which receives a signal from a range switch 7 accodiated with a vehicle speed sensor 6 and a shift lever, and which selectively drive any one of frictionally fastening means 3 in a speed reduction gear mechanism 2 through a hydraulic control circuit 4 in accordance with a previously set term. With this arrangement, when a start or rapid acceleration is carried out during the speed reduction gear being shifted to a uniform high speed range, the frictionally fastening means 3 of the present gear stage is released, and warning is given to the driver while a start and a rapid acceleration become impossible. Accordingly, it is possible to prevent the frictionally fastening means 3 having a small torque capacity in a high speed stage from slipping and seizing in association with the former, thereby it is possible to prevent incomplete operation and lowered durability of the speed reduction gear, etc.
Inventors:
HIRUTA HIDEJI
Application Number:
JP8473385A
Publication Date:
October 31, 1986
Filing Date:
April 19, 1985
Export Citation:
Assignee:
MAZDA MOTOR
International Classes:
F16H61/00; F16H59/04; F16H59/08; F16H59/12; F16H61/18; F16H63/42; (IPC1-7): F16H5/66
Attorney, Agent or Firm:
Masaaki Fukuoka