Heating system for an operator's cab and off road vehicle with a heating system

摘要

A vehicle (10) is provided with an operators cab (22) having a heating system. The vehicle (10) is powered by an internal combustion engine (24) that is a source of heated fluid. Heated fluid from the engine (24) is directed to a supply line (28) where it is carried to a heat exchanger (30) in communication with the interior of the operators cab (22). A valve (40) having an electrical actuator (42) regulates the flow of heated fluid through the supply line (28) to the heat exchanger (30). A non-linear potentiometer (44) controls the actuator (42) so that the heat output of the heat exchanger (30) is linear with respect to the operation of the control knob (50). The non-linear potentiometer (30) drives the actuator (42) so that the valve (40) is opened at an increasing rate until it its fully opened.