Machine system and method for determining the oil temperature in a machine by means of a physically based model

摘要

Machine system (100), which includes:an input which, during the switching on of a machine (102) a first oil temperature of a machines oil; anda heat data processing module (114), comprising a first heat transfer from a piston (16) of the machine (102) on the machine oil is determined, the a second heat transfer from the machine oil to a machine block (30) of the machine (102) and the determined on the basis of the first oil temperature and the first and second heat transfer a second oil temperature of the machines oil were determined,wherein said heat data processing module (114) is determined following:a transferred heat flow of combustion gases to the piston (16) on the basis of the heat transmission coefficients between the combustion gases and the piston (16); andon the basis of the heat flow transmitted to the first and second heat transfer.