A method and device for detecting the driving direction of a vehicle

Abstract

The invention discloses a method and device for detecting vehicle driving direction and relates to the technical field of vehicles. The method for detecting the vehicle driving direction comprises the steps that a first acceleration value is measured from a vehicle acceleration sensor and is sent to a whole vehicle CAN network; a vehicle engine ECU calculates a second acceleration value according to the vehicle speed; the vehicle engine ECU receives the first acceleration value sent by the whole vehicle CAN network; the first acceleration value and the second acceleration value are combined and matched at the vehicle engine ECU; the vehicle driving direction is determined according to a combining and matching result. The invention further provides a corresponding device. By the adoption of the method, a vehicle can accurately know the driving direction in real time, relevant parameters in an engine control system can be adjusted in time to ensure the driving comfort performance of the vehicle. In addition, increase of additional hardware is not needed for scheme achievement, and thus the vehicle production cost is also reduced.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a method and device for detecting the driving direction of a vehicle. Background technique [0002] In the vehicle engine control system, many control strategies such as torque filtering, anti-vibration and other functions are related to the vehicle gear. Different gears have inconsistent control parameters, so only the vehicle gear is specified and adjusted in this gear at the same time. Appropriate control parameters can make the vehicle have comfortable driving performance in all working conditions in each gear, but because the difference between the reverse gear ratio and the first gear ratio of the vehicle gearbox is very small, it is difficult to distinguish the vehicle Reverse and 1st gear. [0003] At present, vehicles equipped with manual transmissions cover the reverse gear in the first gear, while vehicles equipped with AT, DCT, AMT, CVT and other transmissions are e...

AI Technical Summary

Problems solved by technology

[0002] In the vehicle engine control system, many control strategies such as torque filtering, anti-vibration and other functions are related to the vehicle gear. Different gears have inconsistent control parameters, so only the vehicle gear is specified and adjusted in this gear at the same time. Appropriate control parameters can make the vehicle have comfortable driving performance in all working conditions in each gear, but because the difference between the reverse gear ratio and the first gear ratio of the vehicle gearbox is very small, it is difficult to distinguish the vehicle Reverse and 1st gear

[0003] At present, vehicles equipped with manual transmissions cover the reverse gear in the first gear, while vehicles equipped with transmissions such as AT, DCT, AMT, and CVT are equipped with shift lever position sensors, but in the mutual operation of forward gear and reverse gear In the process, due to the delay in the operation of the actual vehicle, it is not possible to determine the driving direction of the vehicle completely and accurately.

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