Working vehicle

A working vehicle including a modulating clutch (2) which flexibly changes traveling power transmitted from an engine (1) to a torque converter (3), and a controller (8) which controls a degree of engagement of said modulating clutch (2) so that torque driving right and left driving wheels (7, 7) of the vehicle becomes a predetermined value during operation, said working vehicle comprising:

• a rotational frequency detector (21) which detects the rotational frequency of either said right or left driving wheel (7, 7), and
• a shaft rotational frequency detector (22) which detects the rotational frequency of any one of rotating shafts from an output shaft of said torque converter (3) to an input shaft of a differential (6);
• wherein said controller (8) converts the rotational frequency of a rotating shaft detected by said shaft rotational frequency detector (22) to the rotational frequency when transmitted to said right and left driving wheels (7, 7), and controls the degree of engagement of said modulating clutch (2) by detecting a sign of a wheel slip based on a difference between said converted rotational frequency and the rotational frequency detected by said rotational frequency detector (21), to prevent a slip.

A working vehicle including a modulating clutch (2) which flexibly changes traveling power transmitted from an engine (1) to a torque converter (3), and a controller (8) which controls a degree of engagement of said modulating clutch (2) so that vehicle speed becomes a predetermined value during operation, said working vehicle comprising:

• a rotational frequency detector (21) which detects the rotational frequency of either right or left driving wheel (7, 7), and
• a shaft rotational frequency detector (22) which detects the rotational frequency of any one of rotating shafts from an output shaft of said torque converter (3) to an input shaft of a differential (6);
• wherein said controller (8) converts the rotational frequency of a rotating shaft detected by said shaft rotational frequency detector (22) to the rotational frequency when transmitted to said right and left driving wheels (7, 7), and controls the degree of engagement of said modulating clutch (2) by detecting a sign of a wheel slip based on a difference between said converted rotational frequency and the rotational frequency detected by said rotational frequency detector (21), to prevent a slip.