Title:
【発明の名称】油圧作業車の動力伝達系制御装置
Document Type and Number:
Japanese Patent JP2714785
Kind Code:
B2
Abstract:
A control apparatus for a power transmission of vehicles such as construction machine having at least one work implement actuated by a hydraulic cylinder unit, a transmission gear with hydraulically operated speed-change clutch, and a torque converter interposed between an engine and the transmission gear so as to transmit rotational power of the engine and having a hydraulically operated stator clutch. The control apparatus has two solenoid actuated clutch pressure control valves respectively provided in two hydraulic circuits which connect a hydraulic fluid supply source with the speed-change clutch and the stator clutch, respectively, so as to change the hydraulic pressure in the hydraulic circuits by the operation of a controller to which respective solenoids of the clutch pressure control valves are connected on its output part and an engine rotation sensor, a pressure sensor for detecting the pressure in the hydraulic cylinder unit of the work implement and a speed-change lever position sensor for detecting the shift of the lever to its first speed position are connected on its input part.
Inventors:
Toshitaka
Kenjiro Nezuka
Kenjiro Nezuka
Application Number:
JP24279385A
Publication Date:
February 16, 1998
Filing Date:
October 31, 1985
Export Citation:
Assignee:
KOMATSU LTD.
International Classes:
B60W10/10; F16H61/00; F16H61/04; B60W10/02; F16H61/32; F16H61/58; F16H59/02; F16H59/42; F16H59/70; (IPC1-7): F16H61/04; B60K41/22
Domestic Patent References:
| JP58123932A | ||||
| JP5381863A | ||||
| JP4822051B1 |
Attorney, Agent or Firm:
Masaaki Yonehara (1 person outside)