| 摘要 |
#CMT# #/CMT# The method involves determining a volumic flow of an exhaust gas from an internal combustion engine (2). A back pressure set point is determined for simulating an equipment e.g. particle filter, placed downstream of the engine. A set point position (alpha) of a valve (11) e.g. butterfly valve, of a testing rig is determined according to a volumic flow of the back pressure set point and predetermined characteristics of the valve for controlling a position of the valve in order to adjust the back pressure in an upstream of the valve. #CMT# : #/CMT# An independent claim is also included for a testing rig comprising an exhaust duct. #CMT#USE : #/CMT# Method for regulating an exhaust back pressure of an internal combustion engine e.g. spark ignition engine and diesel engine, on a testing rig (claimed). #CMT#ADVANTAGE : #/CMT# The set point position of the valve is determined according to the flow of the back pressure set point and predetermined characteristics of the valve, thus eliminating a control loop and rapidly determining the set point position. The method thus enables regulation of the exhaust back pressure of the internal combustion engine on the testing rig, which is rapid to react and which considers different levels of charging the particle filter. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic view of a testing rig.`(Drawing includes non-English language text)` alpha : Valve`s set point position 2 : Internal combustion engine 10 : Exhaust duct 11 : Valve 13 : Flow measuring system. |
