Utility vehicle

A utility vehicle comprising:

• a mechanically powered diesel engine without an engine control unit and no electrical control, the diesel engine being configured to be mechanically supplied with fuel by a fuel injection pump that is driven and rotated directly by rotation of a crank shaft, an amount of the supplied fuel is mechanically adjusted by a centrifugal spark advancer, and the supplied fuel is ignited by compressed self-ignition;
• a drive unit including a two-four wheel drive switcher provided on a driving power transmission path from the diesel engine and configured to switch transmission of driving power to driving wheels between a two-wheel drive mode and a four-wheel drive mode and/or a differential locking device;
• and a vehicle control unit mainly configured to control the drive unit, the utility vehicle further comprising:
• a rollover sensor configured to detect rollover of the utility vehicle;
• and a fuel cutoff valve configured to cut off fuel supply to the diesel engine, wherein the vehicle control unit determines whether or not the utility vehicle is being rolled over in accordance with detection by the rollover sensor and controls the fuel cutoff valve to cut off the fuel supply when the vehicle control unit determines that the utility vehicle is being rolled over.