Title:
CONTROL DEVICE FOR TRACTOR
Document Type and Number:
Japanese Patent JP2016031115
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To eliminate influence of working pressure caused by a centrifugal force acting on a hydraulic clutch that performs power transmission for a stopping operation and a starting operation at a tractor for performing both stopping operation and starting operation only through brake operation.SOLUTION: This invention relates to a control device for a tractor in which a main clutch 48 for intermittently connecting or disconnecting a power transmission is arranged at a power transmission passage from an engine 5 to a running device, a changing of working pressure of the main clutch 48 is controlled to such a stop pressure as one not to cause the tractor body to run on the basis of the number of rotation detected by a rotation sensor for a proper shaft reaching to the main clutch 48 through a treading stop operation at a brake pedal, and the work pressure of the main clutch 48 is returned back as releasing of the treading operation of the brake pedal. A thrusting force of a clutch piston under influence of centrifugal force generated through rotation of the main clutch 48 is estimated, and hydraulic pressure of the working oil to be supplied is corrected to change the hydraulic pressure ranging from the non-connected state to the connected state of the main clutch 48.SELECTED DRAWING: Figure 2
Inventors:
TAKAHASHI MASAYUKI
ONO HIROYOSHI
ONO HIROYOSHI
Application Number:
JP2014154029A
Publication Date:
March 07, 2016
Filing Date:
July 29, 2014
Export Citation:
Assignee:
ISEKI AGRICULT MACH
International Classes:
F16D48/02
Domestic Patent References:
| JP2014088948A | 2014-05-15 | |||
| JP2008281133A | 2008-11-20 | |||
| JP2012116301A | 2012-06-21 | |||
| JP2009522521A | 2009-06-11 | |||
| JPH04201736A | 1992-07-22 | |||
| JPH0733733U | 1995-06-23 |