A. Air Intake: 1. Provide an engine-mounted air cleaner with replaceable dry filter and dirty filter indicator. B. Exhaust System: SPEC WRITER NOTE: Include the following paragraph only when the drawings show such an arrangement. Ensure that the exhaust gases leaving the engine generator are diffused properly into the airstream. //1. Where a turbocharger is required, they shall be engine-mounted, driven by the engine gases, securely braced against vibration and adequately lubricated by the engine's filtered lubrication system. // 2. Exhaust Muffler: Shall be critical grade type and capable of the following noise attenuation: Octave Band Hertz Minimum db Attenuation (Mid Frequency) (.0002 Microbar Reference) 31 5 63 10 125 27 500 37 1000 31 2000 26 4000 25 8000 26 3. Pressure drop in the complete exhaust system shall be small enough for satisfactory operation of the engine generator while it is delivering 100% of its specified rating. 4. Exhaust pipe size from the engine to the muffler shall be as recommended by the engine manufacturer. Pipe size from muffler to air discharge shall be two pipe sizes larger than engine exhaust pipe. 5. Connections at the engine exhaust outlet shall be made with a flexible exhaust pipe. Provide bolted type pipe flanges welded to each end of the flexible section.
A. Air Intake: 1. Provide an engine-mounted air cleaner with replaceable dry filter and dirty filter indicator. B. Exhaust System: SPEC WRITER NOTE: Include the following paragraph only when the drawings show such an arrangement. Ensure that the exhaust gases leaving the engine generator are diffused properly into the airstream. //1. Where a turbocharger is required, they shall be engine-mounted, driven by the engine gases, securely braced against vibration and adequately lubricated by the engine's filtered lubrication system. // 2. Exhaust Muffler: Shall be critical grade type and capable of the following noise attenuation: Octave Band Hertz (Mid Frequency) Minimum db Attenuation (.0002 Microbar Reference) 31 5 63 10 125 27 500 37 1000 31 2000 26 4000 25 8000 26 3. Pressure drop in the complete exhaust system shall be small enough for satisfactory operation of the engine generator while it is delivering 100% of its specified rating. 4. Exhaust pipe size from the engine to the muffler shall be as recommended by the engine manufacturer. Pipe size from muffler to air discharge shall be two pipe sizes larger than engine exhaust pipe. 5. Connections at the engine exhaust outlet shall be made with a flexible exhaust pipe. Provide bolted type pipe flanges welded to each end of the flexible section.
263213EngGen.docx