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Torque Converter Slippage Formula:
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Torque converter slippage is the difference between engine RPM and turbine RPM in an automatic transmission system. It represents the amount of rotational speed lost between the engine and transmission input shaft.
The calculator uses the simple formula:
Where:
Explanation: This calculation shows how much rotational energy is being dissipated as heat in the torque converter fluid rather than being transferred to the transmission.
Details: Monitoring torque converter slippage is crucial for diagnosing transmission problems, assessing transmission health, and identifying potential issues before they lead to major failures.
Tips: Enter both engine RPM and turbine RPM values in revolutions per minute. Both values must be positive numbers. The calculator will compute the difference between these two values.
Q1: What is considered normal torque converter slippage?
A: Normal slippage varies by vehicle and driving conditions, but typically ranges from 50-200 RPM during normal operation. Excessive slippage (300+ RPM) may indicate a problem.
Q2: What causes excessive torque converter slippage?
A: Common causes include low transmission fluid, worn torque converter clutch, contaminated fluid, or internal damage to the torque converter.
Q3: How is turbine RPM measured?
A: Turbine RPM is typically measured using a transmission speed sensor, which monitors the rotation of the transmission input shaft.
Q4: Can slippage be completely eliminated?
A: Some slippage is normal and necessary for proper torque converter operation, particularly during acceleration and gear changes. Modern lock-up torque converters minimize slippage during cruising.
Q5: Does high slippage affect fuel economy?
A: Yes, excessive slippage converts mechanical energy into heat, reducing efficiency and increasing fuel consumption.