Work Vehicle Controller

A work vehicle controller having a forward clutch terminating its clutch connection operation when its clutch oil pressure reaches a holding pressure, and a reverse clutch terminating its clutch connection operation when its clutch oil pressure reaches a holding pressure, and being designed such that an engine power is transmitted to a drive wheel via the forward clutch or the reverse clutch, the controller comprising:

• operation means that is operated to select a travel direction position from among a forward travel direction position, a neutral position, and a reverse travel direction position;
• brake means that reduces a vehicle body speed;
• vehicle body speed detection means that detects the vehicle body speed;
• forward/reverse clutch control means that controls the clutch oil pressure to disconnect the reverse clutch while connecting the forward clutch when the forward travel direction position is selected by the operation means, and controls the clutch oil pressure to disconnect the forward clutch while connecting the reverse clutch when the reverse travel direction position is selected by the operation means;
• travel direction determination means that determines whether a current travel direction of a vehicle body is the forward travel direction or the reverse travel direction based on an operation position selected by the operation means, the clutch oil pressure of the forward clutch or the reverse clutch, and the detected vehicle body speed;
• and
• braking force control means that controls a braking force of the brake means such that the brake means is activated on conditions that the travel direction position selected by the operation means and the travel direction determined by the travel direction determination means are opposite to each other and the detected vehicle body speed is greater than a predetermined threshold value, when the operation position selected by the operation means is switched over.