AUTOMATIC PREHEATING SYSTEM FOR AN INTERNAL COMBUSTION ENGINE AND HYDRAULIC PUMP

摘要

An automatic warming-up apparatus (1) and a warming-up method applied in various hydraulic systems which are equipped with an engine (2) and a hydraulic pump (5) driven by the engine (2), and controlled by a microcomputer. The warming-up apparatus (1) has at least one hydraulic actuator (11) operated by an oil discharged from the hydraulic pump (5), a first temperature sensor (10) detecting the temperature of a lubricant oil of the engine, a second temperature sensor (15) detecting the temperature of a cooling water of the engine (2), a third temperature sensor (13) detecting the temperature of a pressurized oil of the hydraulic system, an input/output unit (8) sending to the controller (1) the temperature signals received from the sensors.