Injection channel bypass for probe measurement

An admission gas supply device (18) comprising an air inlet mounting side and a body (23a) having an internal cavity (23b), the body (23a) being arranged for being mounted, on the air inlet mounting side, on the air outlet of a heat exchanger (16) of an automotive vehicle engine, said body (23a) comprising an injection channel (24) for injecting recirculated exhaust gas into said internal cavity (23b) and an opening arranged for receiving a measurement probe (30) for measuring at least one parameter in the internal cavity (23b), said admission gas supply device (18) being characterized in that the opening is made in the body (23a) between the injection channel (24) and the air inlet mounting side of the admission gas supply device (18).