Upslope travelling control method and system for automobile

Abstract

The invention provides an upslope travelling control method and system for an automobile. The upslope travelling control method for the automobile comprises the following steps that a transmission control unit acquires the longitudinal inclination angle information of the automobile; the transmission control unit judges whether the automobile is in upslope travelling according to the longitudinal inclination angle information; if yes, the slope correction torque of an engine is calculated according to the longitudinal inclination angle information and is transmitted to an engine electronic control unit; and the engine electronic control unit acquires torque required by users, and controls the output torque of the engine according to the required torque of users and the slope correction torque. Through the adoption of the upslope travelling control method for the automobile disclosed by the embodiment of the invention, the output torque of the engine can be controlled effectively, the operations of frequently stepping on an accelerator pedal and shifting between gears by the users are reduced, the controllability of the automobile is improved greatly, the mechanical wear of the automobile is reduced, and the driving experience of the users is improved.

Description

technical field [0001] The invention relates to the technical field of automobile control, in particular to a method and system for controlling an automobile traveling uphill. Background technique [0002] In the process of driving on a slope, in order to increase the power of the car, a car with an automatic transmission can control the automatic transmission of the car to shift gears according to the driving state of the car. Slope driving condition. [0003] Specifically, when the car is driving uphill, the vehicle speed, vehicle speed acceleration, and accelerator pedal position can be obtained, and an appropriate shift point can be determined according to the vehicle speed, vehicle speed acceleration, and accelerator pedal position, and then the slope of the current slope can be obtained. The corresponding shift point is compensated according to the current slope, and the gear position of the automatic transmission is selected according to the compensated shift point. ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the complex driving conditions and the different habits of drivers, in order to control the car to drive uphill, the driver needs to frequently step on the accelerator and frequently switch the gears of the car during driving, which increases mechanical wear and tear, especially when the car is driving When the slope is large and the road conditions are congested, the phenomenon of the driver frequently stepping on the accelerator or switching gears is particularly prominent. By frequently stepping on the accelerator or switching gears to control the car to drive uphill, the driver needs more operations to control the car. poor driving experience

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