Working vehicle

Motor vehicles – Having four wheels driven

Patent

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Details

172 2, 303186, 303190, 701 69, 701 89, B60K 1734

Patent

active

061128422

ABSTRACT:
A working vehicle such as an agricultural tractor includes a control device having an accelerating drive mode to accelerate front wheels automatically to rotate faster than rear wheels when the front wheels are steered in excess of a fixed amount. When the rotating speed of an engine falls below a predetermined value, a shift to the accelerating drive mode is inhibited to avoid an engine stall.

REFERENCES:
patent: 4696365 (1987-09-01), Ishimori et al.
patent: 5195037 (1993-03-01), Tezuka
patent: 5272635 (1993-12-01), Nakayama
patent: 5383531 (1995-01-01), Yoshioka et al.
patent: 5558163 (1996-09-01), Hollstein

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