Longitudinal driving method and device for automatic parking of traditional fuel vehicle, vehicle and medium

By introducing a transmission control unit (TCU) and a phased arbitration mechanism into the automatic parking process of traditional fuel vehicles, the problem of driving force fluctuation caused by the TCU is solved, the smoothness and stability of automatic parking are improved, and the accuracy of creep speed control is ensured.

CN122009159AActive Publication Date: 2026-05-12MOTOVIS TECH SHANGHAI CO LTD
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Patent Information

Application Number
CN202610483941.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-14
Publication Date
2026-05-12
Estimated Expiration
2046-04-14

AI Technical Summary

Technical Problem

In traditional gasoline vehicles, during automatic parking, the transmission control unit (TCU) in the powertrain system causes the drive force command from the IPB to the EMS to be transmitted through the TCU. This results in fluctuations in drive force caused by gear shifting or clutch engagement, affecting longitudinal control accuracy and user experience.

Method used

The transmission controller (TCU) is introduced into the control loop of the parking condition. Through the creep speed closed-loop control strategy and the phased arbitration mechanism, longitudinal control signals and target creep speed are sent to the IPB and TCU respectively. The EMS performs drive torque arbitration to ensure the smoothness and stability of the vehicle during the start-up and non-start-up phases.

Benefits of technology

It effectively counteracts speed disturbances caused by gear shifting and clutch status changes, improves the smoothness and stability of the automatic parking process, prevents uneven speed and start-up vibration, and achieves precise following of creep speed control.

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Abstract

The invention discloses a longitudinal driving method and device for automatic parking of a traditional fuel vehicle, the vehicle and a medium, a transmission control unit (TCU) is actively introduced into a control loop of a parking working condition, two interfaces of a longitudinal control signal and a target creeping speed are introduced to be respectively sent to an IPB and the TCU, and a staged arbitration mechanism is introduced into an engine controller (EMS), so that the automatic parking of the traditional fuel vehicle is realized. Smooth starting of the vehicle is ensured, backward sliding and accurate following of the target crawling speed are effectively prevented, and the common problems of unsmooth vehicle speed, rushing and the like in the automatic parking process of a traditional fuel vehicle are solved from the source.
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