Work vehicle with auxiliary work tool and method of controlling propulsion of work vehicle having auxiliary work tool

A method of controlling propulsion of a work vehicle having an auxiliary work tool, the method comprising:

• receiving a propulsion input for propelling the work vehicle at a propulsion speed;
• determining a prime mover speed for a prime mover configured to propel the work vehicle, the prime mover providing a prime mover output based on the propulsion input;
• propelling the work vehicle with the prime mover output based on the propulsion input;
• operating the auxiliary work tool while propelling the work vehicle;
• determining an auxiliary work tool load from operation of the auxiliary work tool;
• determining whether the auxiliary work tool load of the auxiliary work tool exceeds an auxiliary work tool load threshold, wherein the auxiliary work tool load threshold is based on the prime mover speed;
• and
• reducing the propulsion speed of the work vehicle if the auxiliary work tool load of the auxiliary work tool exceeds the auxiliary work tool load threshold;
• wherein operating the auxiliary work tool while propelling the work vehicle comprises operating the auxiliary work tool to receive the auxiliary work tool load from working a ground under the work vehicle while propelling the work vehicle over the ground.