Upshift control method and device for a dual-clutch automatic transmission

Abstract

The present application discloses an upshift control method for a dual-clutch automatic transmission. During the upshift process triggered by the first upshift command, if the second upshift command is detected, the first upshift command triggered In the speed regulation control stage of the upshift process, the shift fork is pre-engaged to the target gear corresponding to the second upshift command. Therefore, for the first upshift instruction corresponding to the prior upshift request and the second upshift instruction corresponding to the subsequent upshift request, if the second upshift instruction appears before the upshift process of the first upshift instruction is completed , then the shift fork pre-engagement control during the upshifting process of the second upshifting command can be performed synchronously with the speed regulation control during the upshifting process of the first upshifting command. Therefore, the upshifting process of the second upshifting request can be executed earlier, so that the rapidly updated upshifting request can be responded to in a more timely manner, thereby avoiding problems such as untimely response of the driver's intention. In addition, the present application also provides an upshift control device for a dual-clutch automatic transmission.

Description

technical field [0001] The invention relates to the field of transmission control, in particular to an upshift control method and device for a dual-clutch automatic transmission. Background technique [0002] Dual-clutch automatic transmission is a typical transmission without power interruption. Therefore, during the upshift (Power Up, PU for short) process of the dual-clutch automatic transmission, for the target gear required for this upshift, first control the shift fork to pre-engage the target gear, and then treat the combined clutch and The off-going clutch performs torque interactive control, and then controls the engine speed through the off-going clutch until the engine speed is synchronized with the input shaft speed of the off-going clutch, thereby completing the upshifting process required for this upshift. [0003] The inventor has found through research that in many cases, there will be multiple upshift demands in a short period of time, wherein, the next ups...

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Problems solved by technology

[0003] The inventor has found through research that in many cases, there will be multiple upshift demands in a short period of time, wherein, the next upshift demand often appears before the upshift process of the previous upshift demand is completed, but the latter All the control operations in the upshift process of the upshift demand can only be executed after the upshift process of the previous upshift demand is completed. It can be seen that the rapidly updated upshift demand cannot be responded in time, which causes the driver to Intentional response is not timely and the upshift rhythm is not compact enough, etc.

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