Method and device for controlling vehicle accelerator slope

Abstract

The invention provides a method for controlling a vehicle accelerator slope. The method comprises the steps that it is determined that a common working range of the vehicle accelerator opening degreeis larger than or equal to lambda 1 and smaller than or equal to lambda 2; when the accelerator opening degree is in the common working range, an initial value of the accelerator slope k2 is set, whenthe accelerator opening degree is equal to lambda 1, the pedal travel is delta 3, and when the accelerator opening degree is equal to lambda 2, the pedal travel is delta 4; when the accelerator opening degree is smaller than lambda 1, the accelerator slope is set to be k1, and when the accelerator opening degree is larger than lambda 2, the accelerator slope is set to be k3; a critical value of the accelerator slope is set to be kx; the numerical value of k2 is reduced, and when k2 is smaller than or equal to the critical value kx, the numerical value of k2 is no longer changed, and k2 is equal to kx; under the condition that k2 is larger than the critical value kx, engine torque average fluctuation amount delta T in a certain period is collected in real time when the accelerator openingdegree is in the common working range, and a critical value of the engine torque average fluctuation amount is set to be Tx; and when delta T is smaller than or equal to Tx, the numerical value of k2is not adjusted any more.

Description

technical field [0001] The invention relates to the field of vehicle control, in particular to a method for controlling the accelerator slope of a vehicle. Background technique [0002] The engine ECU (Engine Electronic Control Unit) converts the stroke of the accelerator pedal into the opening of the accelerator. The current adjustment of the throttle, one method is to increase or decrease the slope of the throttle as a whole according to the driving characteristics of the vehicle (for example, patent CN201710342729), which cannot take into account the requirements of vehicle economy and power; another method is to adjust the throttle opening The signal is passivated (for example, patent CN201310533812), which in turn reduces the timeliness of the vehicle's response to the throttle. [0003] For commercial vehicles, especially highway tractors, in the starting and overtaking stages, the accelerator needs to respond quickly and strongly to the pedal to meet the driver's des...

AI Technical Summary

Problems solved by technology

The current adjustment of the throttle, one method is to increase or decrease the slope of the throttle as a whole according to the driving characteristics of the vehicle (for example, patent CN201710342729), which cannot take into account the requirements of vehicle economy and power; another method is to adjust the throttle opening The signal is passivated (such as patent CN201310533812), which in turn will reduce the timeliness of the vehicle's response to the accelerator

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