Bukh V8 Series, Руководство пользователя

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Owners Manual 348
IMPORTANT: The size of ventilation openings must be increased if any auxiliary equipment is located in
the engine compartment.
The combustion air requirement (per engine) for the specified engines at Wide Open Throttle is given
in the following table.
Model
Engine Air Requirements at
Wide Open Throttle
300-400 HP 25m
3
/min
400-500 HP 30m
3
/min
500-550 HP 35m
3
/min
Recommended open ventilation area, for combustion air only, is calculated by
1.7 X Rated engine power in KW and given in cm
3
Conversion factor from HP to KW is ~ 0.735.
Example for BUKH V8 - 500:
Recommended open ventilation area, for combustion air only is:
1.7 x 500 HP x 0,735 ~ 620 cm
2
For engine combustion air only -
NOT total engine compartment ventilation requirement.
IMPORTANT: The amount of vent area required, according to boating standards (NMMA,
ABYC, etc.) and Coast Guard regulations, for complete (total) engine compartment ventilation
must include the engine combustion air vent area plus the engine compartment ventilation
requirements.
Recommended pressure differential. The pressure differential between outside and inside the engine
compartment must not exceed the following value.
Recommended Maximum Pressure Differential at Wide Open Throttle
500 Pa