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Steep descent control system and control method for heavy trucks

A control system and technology for heavy-duty trucks, applied in the direction of brakes, etc., can solve problems such as the inability to meet the needs of heavy-duty trucks, and achieve the effects of reducing driving safety risks, reducing fatigue driving, and improving the degree of intelligent control

Active Publication Date: 2021-08-10
徐州徐工重型车辆有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this control method only detects the slope and vehicle speed, and does not consider the impact of the load, so it cannot meet the needs of heavy trucks

Method used

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  • Steep descent control system and control method for heavy trucks
  • Steep descent control system and control method for heavy trucks

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A heavy-duty truck steep slope descent control system consists of a vehicle controller 6 (for example, the model can adopt EPEC2024), an ABS controller 5 (for example, the model can adopt ABS-E), an instrument 8 and an engine ECU 9 (for example, the model can adopt EDC17 -C4) A local area network is formed through the CAN bus, which can share the signals sent by other controllers;

[0036] The vehicle controller 6 receives the signal of the steep slope descent switch 1, the slope signal, and the load signal, controls the foot brake solenoid valve 7 according to the preset program, and sends the slope signal and the load signal to the instrument through the CAN bus after analysis and processing. 8 displays; the ABS controller 5 receives the signal of the vehicle speed sensor 4, and sends it to the vehicle controller 6, the instrument 8, the engine ECU 9 through the CAN bus, and the instrument 8 displays the vehicle speed in real time, and the vehicle controller 6 accordin...

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PUM

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Abstract

The invention discloses a method for controlling steep slope descent of a heavy-duty truck. Drive at a constant speed; when the load is ≥90% and the slope is <30%, it is in the non-steep slope descent mode; when the load is <90% and the slope is ≥30%, it is in the non-steep slope descent mode; when the load is <90% , and when the slope is less than 30%, it is in the non-slope descent mode; (b) when the slope descent switch is pressed: when the slope is ≥ 30%, it enters the steep descent mode, and the vehicle is controlled to drive at a constant speed. The invention not only solves the operation error caused by information distortion that may be caused by human judgment, but also can reduce the driver's long-term fatigue driving, reduce the driving safety risk, and improve the intelligent control degree of the vehicle.

Description

technical field [0001] The invention relates to a heavy-duty truck steep slope descent control system and control method, belonging to the field of vehicle braking control. Background technique [0002] At present, in the field of heavy-duty trucks, the speed control of the vehicle when going down a steep slope generally adopts foot brake, engine brake, and ABS, and the operator controls it according to the road conditions and driving conditions. This kind of speed control that relies on driving experience has the following disadvantages : 1. The slope, load capacity, and braking power of the ramp are based on the subjective experience of the driver, which may not be completely consistent with the actual situation, which affects the driver's operation decision-making; 2. The control value of the safe speed depends on the driver's driving habits. Safety is difficult to guarantee; 3. The complex long and steep road conditions, long-term operation will cause driver fatigue and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/1755B60T8/171B60T8/58B60T8/24
CPCB60T8/171B60T8/1755B60T8/24B60T8/58
Inventor 王建东陈太荣周旋许丰王凯刘钊范书华
Owner 徐州徐工重型车辆有限公司
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