A driving force active switching control system for a time-sharing four-wheel drive vehicle

Abstract

The invention discloses an active switching and controlling system for driving force of a time-shared four-wheel vehicle. In a travelling process under the two-wheel condition of the vehicle, sensors mounted on a vehicle body collect corresponding signals, a control unit ECU judges the real-time road condition according to sensor signals and transmits a four-wheel gear instruction to a time-shared transfer case, and through the matching between an electromagnetic clutch in the time-shared transfer case and a shifting motor, the active shifting from the two-wheel condition to the four-wheel condition of the time-shared transfer case is realized. The active switching and controlling system for the driving force of the time-shared four-wheel vehicle, disclosed by the invention is simple and reliable in structure, on the basis of the manual switching of the time-shared transfer case, a plurality of the vehicle condition sensors and the control unit ECU are arranged, a driving manner can be automatically switched according to the traveling road condition of the vehicle, the active driving safety of the vehicle is improved, the power property and the passing property of the vehicle can be ensured, and the fuel economy can be considered.

Description

technical field [0001] The invention relates to the technical field of automobile driving, in particular to an active switching control system for driving force of a time-sharing four-wheel drive vehicle. Background technique [0002] Although the current existing time-sharing four-wheel drive system has the advantages of simple structure, high stability, durability, etc., there are disadvantages in its manual switching mode. The manual switching mode of part-time four-wheel drive requires high driving skills, which increases the driver's driving burden, and part-time four-wheel drive vehicles do not have a central differential. It is very likely to cause adverse consequences such as turning brakes. Traditional time-sharing four-wheel drive vehicles rely on the driver's judgment on the road conditions and driving experience when shifting gears, and operate the buttons or knobs in the car to switch the driving mode; cars equipped with timely transfer cases cannot cope with h...

AI Technical Summary

Problems solved by technology

The manual switching mode of part-time four-wheel drive requires high driving skills, which increases the driver's driving burden, and part-time four-wheel drive vehicles do not have a central differential. It is very likely to cause adverse consequences such as cornering braking.

Traditional time-sharing four-wheel drive vehicles rely on the driver's judgment on the road conditions and driving experience when shifting gears, and operate the buttons or knobs in the car to switch the driving mode; cars equipped with timely transfer cases cannot cope with high-intensity off-road section, and the active safety is lacking; the structure of the full-time transfer case is relatively complex, the stability is not enough, and the fuel consumption is large when automatic shifting is performed, so it cannot be widely used in various models

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