Title:
LINE PRESSURE CONTROL DEVICE OF V-BELT TYPE STEPLESS SPEED CHANGE GEAR
Document Type and Number:
Japanese Patent JPS5839871
Kind Code:
A
Abstract:
PURPOSE:To improve the durability of a V-belt by regulating the line pressure in proportion to the reduction ratio of a belt speed change unit and in inverse proportion to the negative pressure of an engine suction pipe so as to change the line pressure in accordance with an engine output torque. CONSTITUTION:A reduction ratio calculating circuit 152 calculates the reduction ratio between a driving pulley and driven pulley based on signals 42, 88 from an engine speed sensor 40 and car speed sensor 86 and feeds out a signal 154 regarding the reduction ratio to a required oil pressure calculating circuit 402, which is also fed with a signal 406 regarding the negative pressure of an engine suction pipe from a negative pressure sensor 404. Then, the required oil pressure calculating circuit 402 controls the line pressure in proportion to the reduction ratio and in inverse proportion to the negative pressure of the engine suction pipe and feeds out a signal 418 indicating an oil pressure command value to a line pressure regulating valve driver 420 so as to control a line pressure regulating valve 422.
Inventors:
TAKEUCHI YASUHISA
MORIMOTO YOSHIROU
SUZUKI SUNAO
MORIMOTO YOSHIROU
SUZUKI SUNAO
Application Number:
JP13782781A
Publication Date:
March 08, 1983
Filing Date:
September 03, 1981
Export Citation:
Assignee:
NISSAN MOTOR
International Classes:
B60W10/04; B60W10/06; B60W10/10; B60W10/18; F16H61/00; F16H61/662; (IPC1-7): F16H5/66; F16H9/18
Domestic Patent References:
| JPS4932098A | 1974-03-23 | |||
| JPS5737146A | 1982-03-01 |
Attorney, Agent or Firm:
Toshiyuki Miyauchi