CO2 TRACING METHOD FOR MEASURING RAW EXHAUST GAS FLOW RATE AT EXIT FROM AN INTERNAL COMBUSTING ENGINE FOR A MOTOR VEHICLE AND MEASURING EQUIPMENT FOR CARRYING OUT SAID METHOD

摘要

The invention relates to an COSUB2/SUB tracing method for measuring a raw exhaust gas (3) flow rate at exit from an internal combustion engine (1A) for a motor vehicle (1). The inventive COSUB2/SUB tracing method for measuring raw exhaust gas flow rate at exit from an internal combustion engine for a motor vehicle consists, prior to starting the motor vehicle internal combustion engine, in injecting a known flow rate of a gas COSUB2/SUB and NSUB2/SUB mixture into a metering line (20) in such a way that a raw COSUB2/SUB analyser (22) and a diluted COSUB2/SUB analyser (24) are triggered.