Chapter 4 TPD1317e Noise absorbing chambers with deflector baffles positioned to direct ventilation air flow over a large surface area of absorbent material. Cross sectional area of air flow path must not be too small. Noise absorbent material on panels surrounding the engine Figure 1 - Example of an engine room ventilation layout. Note: The air temperature entering the engine should not exceed 52 o C (125 o F) Page 24