A method for preventing mis-hanging of the gear shifter of an automatic transmission vehicle

Abstract

The invention provides an automatic catch vehicle shifter accidentally-engaging prevention method. According to the method, an R gear locking electromagnetic valve and a D gear locking electromagnetic valve are arranged in a transmission. An electromagnetic valve control system comprises a microprocessor, a brake switch, a gear sensor, a vehicle speed sensor, an engine running state sensor, a timer and a comparator, wherein the brake switch, the gear sensor, the vehicle speed sensor, the engine running state sensor, the timer and the comparator are connected with the microprocessor. The starting terminal and the output terminal of the timer are connected with different I / O ports of the microprocessor, the reset terminal of the timer is connected with the brake switch, the two input terminals of the comparator are connected with output signals of the vehicle speed sensor and vehicle speed threshold signals respectively, the output terminal of the comparator is connected with the I / O ports of the microprocessor, in the running process, the microprocessor controls the two electromagnetic valves to be opened or closed according to input signals of all the I / O ports, and therefore the accidentally-engaging prevention purpose is achieved. According to the automatic catch vehicle shifter accidentally-engaging prevention method, misoperation harmful to the transmission can be avoided, security threats of the accidentally-engaging operation of a shifter to the transmission are completely eliminated, and normal running of a vehicle is guaranteed.

Description

technical field [0001] The invention relates to a method capable of preventing misoperation of a shifter of an automatic transmission vehicle, belonging to the technical field of automobiles. Background technique [0002] The shifter of automatic transmission vehicles generally has five gears, which are parking gear P, reverse gear R, neutral gear N, forward gear D and manual mode gear M, and the gear arrangement method is P / R / N / D in order Arranged in series, D block and M block are arranged in parallel. During the driving process of the automatic transmission vehicle, if the shifter is misoperated, for example, when the vehicle speed is higher than 5km / h, the gear is shifted from the D or R gear to the P gear, it may cause damage to the transmission, so it must be taken Anti-wrong hanging measures. Existing electronic shifters generally only have the locking function of the P gear or the R gear. The gear shifter with the P gear locking function cannot prevent the R gear f...

AI Technical Summary

Problems solved by technology

During the driving process of the automatic transmission vehicle, if the shifter is misoperated, for example, when the vehicle speed is higher than 5km / h, the gear is shifted from the D or R gear to the P gear, it may cause damage to the transmission, so it must be taken Anti-wrong hanging measures

Existing electronic shifters generally only have the locking function of the P gear or the R gear. The gear shifter with the P gear locking function cannot prevent the R gear from being directly linked to the D gear, and it is also impossible to avoid the N gear from being connected to the R gear or the D gear. Misoperation between gears

The shifter with the R gear lock function cannot prevent the misoperation from the N gear to the D gear and from the D gear to the N gear

Therefore, none of the existing electronic shifters can effectively avoid the driver's unconscious misoperation, which poses a potential safety threat to the automatic transmission.

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