Method for modeling a compressor inlet temperature and/or a compressor outlet temperature of a compressor, a control device and a motor vehicle

摘要

The invention relates to a method for modeling a compressor inlet temperature and/or a compressor outlet temperature of a compressor (3), taking into account compressor pumping, the method comprising: - determining a pressure gradient (∇pv) across the compressor (3); - determining a mass flow gradient (∇ ṁV,min) across the compressor (3);- determining that compressor surge occurs when the pressure gradient (∇pv) exceeds a pressure gradient upper limit (∇pV,lim) and the mass flow gradient (∇ṁv,min) exceeds a mass flow gradient lower limit (∇ṁV, lim) falls below; and- determining the compressor inlet temperature (T1,α) with a temperature correction factor (ΔTVP,α) dependent on the compressor pumping and/or determining the compressor outlet temperature (T2) based on a corrected compressor outlet pressure (p2,α), which depends on the compressor pumping.