Speed difference treatment method for clutch slip diagnosis
1, the clutch is a common transmission part of the car, through the combination and separation of the clutch, can achieve power transmission and interruption. When the clutch is combined, if there is a speed difference between the input end and the output end of the clutch, it indicates that the friction surface of the clutch is slippery. Moderate micro-sliding is conducive to slowing down the torque fluctuations at the power end, thereby improving driving comfort, but if the speed difference between the two ends of the clutch is large, the skid phenomenon will lead to the output power attenuation and uneven, and long-term sliding will lead to the accumulation of heat, making the clutch hardware due to overheating and function failure. Therefore, accurate and timely clutch slip diagnosis is particularly important in clutch control.
2, in the general clutch slip diagnostic control, the judgment of the clutch slip phenomenon is mainly based on the size of the speed difference between the two ends of the clutch combination. Chinese patent cn116792423a discloses a clutch slip fault diagnosis method, which collects the original speed difference signal. However, in the actual control of the clutch, the original speed difference will be affected by the speed signal acquisition error, the speed difference of normal micro-slip control, and the invalid speed difference once in a while. This leads to a false diagnosis of clutch slip or slip, resulting in the clutch not working normally.
