A system, method and device for prohibiting torque output

Abstract

Embodiments of the present invention provide a system, method and device for prohibiting torque output. By judging whether the first gear information sent by the shifter is received, whether the current vehicle speed is lower than the set threshold and whether the parking lock information sent by the P lock controller is received; The information of the first gear, the current vehicle speed is less than the set threshold and the parking lock information sent by the P lock controller is received, and the forbidden torque output information is sent to the four-wheel drive controller for the four-wheel drive controller to use the forbidden torque The output information prohibits the torque output. The technical solution provided by the embodiment of the present invention can determine that the first gear position information sent by the shifter is received, the current vehicle speed is lower than the set threshold and the parking lock information sent by the P gear lock controller is received, The four-wheel drive controller is controlled to prohibit torque output, which improves the safety of torque output.

Description

【Technical field】 [0001] The invention relates to the technical field of vehicles, in particular to a system, method and device for prohibiting torque output. 【Background technique】 [0002] Extended-range electric vehicles usually use the P gear locking mechanism for mechanical parking. During the parking process, the vehicle control unit (Vehicle Control Unit, referred to as VCU) only enters the parking gear (Parking, referred to as P) in the actual gear. gear) to send parking lock information to the P gear lock controller (Parking Control Unit, referred to as PCU), and the PCU will mechanically lock the reducer after receiving the parking lock information to complete the parking in the P gear . However, when the actual gear position is not considered in the related art when the reverse gear (Reverse, referred to as R gear), neutral gear (Neural, referred to as N gear) or forward gear (Drive, referred to as D gear), if the P gear lock mechanism or the PCU If there is a f...

AI Technical Summary

Problems solved by technology

However, when the actual gear position is not considered in the related art when the reverse gear (Reverse, referred to as R gear), neutral gear (Neural, referred to as N gear) or forward gear (Drive, referred to as D gear), if the P gear lock mechanism or the PCU If there is a fault, the P gear locking mechanism will lock itself. If the four-wheel drive controller outputs torque at this time, it will cause mechanical damage to the locking mechanism and reducer, reducing the safety of torque output.

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