A regeneration apparatus (35, 36) for executing a regeneration process to an exhaust gas purifying apparatus (16) and an engine control device (34) that controls a rotational speed of an engine (10) according to an instruction value by a rotational speed i...

According to the present invention, a work machine, includes: an engine; a radiator for cooling a cooling water of the engine; a thermostat, provided upon a path that conducts the cooling water to the radiator, and that opens and closes the path between fu...