METHOD AND DEVICE FOR DETERMINING THE MECHANICAL POWER OF A MACHINE

摘要

Method for determining the mechanical powder of a machine, particularly a chain saw, using a device according to any one of the claims 1 to 6, characterized in that knowing the speed of rotation n of the hydraulic pump, a form factor K, the surface area of the pump body and the circulation tube S between temperature mesurement points T1 and T2, the average density ς of the hydraulic fluid, the average specific heat CP, the absolute delivery pressure p1 of the pump, atmospheric pressure p0 and ambient temperature T0, and the unit volume v of the pump per rotation of the hydraulic pump, the relation P = nv (Δp + ς Cp ΔΥA) + KSΔΥB is applied where Δp = p1 - p0, ΔΥA = T2 - T1; ΔΥB = (T2 - T1)/2 - T0. The associated device is also described.