Division 9.3.2.1.1 Mixing chamber (Category NRSh)

F1When used in accordance with point 9.3.1.1.1, the internal volume of the mixing chamber shall not be less than ten times the individual cylinder swept volume of the engine under test. The mixing chamber shall be coupled as closely as possible to the engine silencer and shall have a minimum inner surface temperature of 452 K (179 °C). The manufacturer may specify the design of the mixing chamber.