| CPC B60W 30/182 (2013.01) [B60W 10/11 (2013.01); B60W 10/119 (2013.01); B60W 30/19 (2013.01); B60W 2300/185 (2013.01); B60W 2510/1005 (2013.01); B60W 2520/10 (2013.01); B60W 2720/403 (2013.01)] | 17 Claims |
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1. A utility vehicle comprising:
a plurality of wheels mounted with low-pressure tires;
a drive source that generates a driving force for rotationally driving the plurality of wheels;
an output operating element that is operated by a driver and receives an increase/decrease instruction to increase or decrease the driving force;
a switching operating element that is operated by the driver and receives a switching instruction for switching between travel modes;
a controller that stores an upper limit value and a lower limit value of a predetermined speed range, and has a manual travel mode in which the driving force is controlled in accordance with an amount of operation on the output operating element, and a control travel mode in which the driving force is controlled so as to maintain a travel speed at a target speed that is set between the upper limit value and the lower limit value of the predetermined speed range, the control travel mode being executed in response to an input on the switching operating element; and
a power transmission mechanism that transmits the driving force generated in the drive source to the plurality of the wheels when a rotational speed of the drive source is equal to or higher than a predetermined engagement speed, wherein
the predetermined speed range is set in a low speed region relative to a peak of a travel performance curve that indicates the driving force with respect to the travel speed, and
the lower limit value of the predetermined speed range is set to a speed value equivalent to a traveling speed that can be achieved by the power transmission mechanism with the rotational speed of the drive source being equal to the predetermined engagement speed and a forward low-speed position being set in the power transmission mechanism, or a speed value higher than the traveling speed.
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