Bowling's Optimum Shift Calculator
Input Parameters Are the Following:
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Transmission Ratio One = 3.37 to 1
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Transmission Ratio Two = 1.99 to 1
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Transmission Ratio Three = 1.33 to 1
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Transmission Ratio Four = 1.00 to 1
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Horsepower = 180 at 3500 RPM
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Horsepower = 220 at 4000 RPM
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Horsepower = 250 at 4500 RPM
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Horsepower = 280 at 5000 RPM
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Horsepower = 290 at 5500 RPM
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Horsepower = 306 at 6000 RPM
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Horsepower = 290 at 6500 RPM
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Horsepower = 230 at 7000 RPM
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Horsepower = 190 at 7200 RPM
Computation Results:
Using the Criterion for Maintaining the Same Horsepower Before and After Shift:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99:
Found optimum shift RPM at 7007, which achieves 228 horsepower and lowers the RPM To 4138 after shiftFinding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 6845, which achieves 255 horsepower and lowers the RPM To 4575 after shiftFinding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 6633, which achieves 280 horsepower and lowers the RPM To 4988 after shiftMaximumizing the Area Under the Horsepower Curve:
Finding Best Shift Placement Points For Ratio 3.37 to 1.99:
Found optimum shift RPM at 7197, which achieves maximum area under horsepower curve, and lowers the RPM to 4250 after shiftFinding Best Shift Placement Points For Ratio 1.99 to 1.33:
Found optimum shift RPM at 7174, which achieves maximum area under horsepower curve, and lowers the RPM to 4795 after shiftFinding Best Shift Placement Points For Ratio 1.33 to 1.00:
Found optimum shift RPM at 7056, which achieves maximum area under horsepower curve, and lowers the RPM to 5305 after shift
Bruce Bowling
bowling@cebaf.gov
Bowling Superior