method for determining energy efficiency of a power system in a hybrid vehicle

摘要

1/1 summary “method for determining the energy efficiency of a hybrid vehicle power system” is a method for determining the efficiency of a hybrid vehicle power system (1) comprising the steps of determining a representative measure of a relationship between the electrical brake energy and the mechanical brake energy by determining a requested brake energy for a first vehicle delay and determining an actual electrical brake energy and the mechanical brake energy. During the vehicle retardation, determine a new measure representative of a relationship between the electrical brake energy and the mechanical brake energy in a second subsequent similar vehicle retardation, compare the determined measurements representative of a relationship between the electrical brake energy and the mechanical brake energy of the first and second vehicle retardations, where the actual efficiency of the system The energy output is obtained from the change in measurement representative of a relationship between the electric brake energy and the mechanical brake energy of the first and second vehicle retardations. The advantage of the invention is that the efficiency of the hybrid vehicle power system can be monitored over a long period of time.