| 摘要 |
#CMT# #/CMT# The method involves metrologically detecting the speed of a turbine of a turbocharger using a speed sensor. The compression ratio is calculated at a supercharger (1) that is arranged in an intake pipe (2) of an internal combustion engine by dividing the pressure (P3) at an outlet of the supercharger by the pressure (P2) at an inlet of the supercharger. The intake pipe is supplied with fresh air and/or fresh air-fuel mixture for maintenance of cylinders of the engine. The effective charged-air mass flow is calculated using the metrologically detected speed and the calculated compression ratio. #CMT#USE : #/CMT# Method for calculating charged-air mass flow in an intake pipe of an internal combustion engine e.g. diesel engine, petrol engine and hybrid internal combustion engine, that is utilized in automotive engineering industry. #CMT#ADVANTAGE : #/CMT# The utilization of the speed sensor for detection of the speed of the turbine avoids the need for the usage of resistance wire, while the contamination of the sensor is avoided, and hence reducing the additional costs required for the resistance wire. The effective charged-air mass flow is calculated using the metrologically detected speed and the calculated compression ratio, thus accurately calculating the charge-air mass flow in the intake pipe. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of an arrangement of a supercharger in an intake pipe together with pressure tapping points. P1 : Ambient pressure P2 : Pressure at inlet of supercharger P3 : Pressure at outlet of supercharger 1 : Supercharger 2 : Intake pipe. |
