A METHOD IN CONTROLLING AN ENGINE OF A FOREST MACHINE AND A FOREST MACHINE

摘要

A forest machine and method in the control of an engine of the forest machine,whichforest machine performs manipulation of tree trunks in such a way that thepropertiesof the tree trunk subject to manipulating operations are determined by meansofmeasurements of the tree trunk by the forest machine. Properties of a singletreetrunk, determined at the beginning of its manipulation or to be updated duringthemanipulation of the tree trunk, are used to estimate, automatically inadvance, powerlevels required by manipulating operations to be carried out on the treetrunk, beforethe tree trunk is subjected to the manipulating operations. On the basis ofthis, thefunction of the engine of the forest machine is automatically optimized byaffecting thecontrol parameters of the engine to provide the power levels by optimizing theefficiency of the engine.