System and method for reduced track slippage

An on-board system for providing an engine control parameter value pertinent to implement traction control for a variable-load bearing vehicle having an engine and treads, the threads being powered by output from the engine and subject to slipping on a traveled surface, the system comprising:

• at least one member configured to be activated by an operator of the vehicle with an operator-to-vehicle interface;
• and
• a controller operatively connected to the at least one member, the controller configured to:
• determine in response to activation of the at least one member, an engine power limit value based upon a provided transmission output speed value (speed value), and wherein the engine power limit value is specified, based upon the speed value, such that:
• for a first low range of the speed value, beginning at a first non-zero speed and ending at a second non-zero speed, the engine power limit value decreases as the speed value increases,
• for a second low range of the speed value, beginning at the second non-zero speed and ending at a third non-zero speed, the engine power limit value increases, at a first rate of increase, as the speed value increases, and
• wherein the specified engine power limit values of the first low range and the second low range have an effect of maintaining an approximately same level of output track power over the first low range and the second low range,
• render an engine torque limit based upon the engine power limit value, and
• issue an engine torque control parameter value, based upon the engine torque limit, to an engine controller for controlling the engine.