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Impact of BMG o Additional fuel consumption = 53.70 − 50.96=2.74 liters/hour.53.70 - 50.96 = 2.74 \, \(liters/hour}. o Percentage increase = (2.74/50.96) × 100 ≈ 5.4%(2.74 / 50.96) \times 100 \approx 5.4\%.Key Insights o The BMG load at maximum output has a minimal adverse impact on overall system efficiency at cruising speeds. o In some cases, adding the BMG load improves the fuel efficiency of the engine by moving it closer to its optimal operating range. o Adding a 9 kW BMG load to the Yanmar 420 CX engine at cruising speed increases fuel consumption by approximately 2.74 liters/hour or about 5.4%. o This is a relatively small impact, demonstrating the efficiency of using the BMG within the engine's cruising efficiency range. o There is no impact on boat speed because of the white space to propellor load.
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