高压共轨柴油机国产芯片控制系统研究

杨博; 吴欣宸; 董霈; 刘兵

doi:10.7652/xjtuxb202406005

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高压共轨柴油机国产芯片控制系统研究

—————————————————————— | 更新时间：2025-07-28

- 高压共轨柴油机国产芯片控制系统研究
- Research on Domestic Chips Control System of High-Pressure Common-Rail Diesel Engine
- 西安交通大学学报 2024年58卷第6期页码：43-52
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
  
  : 2023-10-09。作者简介: 杨博(1984—),男,副教授。基金项目: 国防预先研究项目子课题资助项目(JZM-202012012)
- 基金信息：
  
  : 2023-10-09。作者简介: 杨博(1984—),男,副教授。基金项目: 国防预先研究项目子课题资助项目(JZM-202012012)
- DOI：10.7652/xjtuxb202406005
  中图分类号： TK323
- 网络首发：2024-06-10，
  
  纸质出版：2024
- 稿件说明：
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杨博, 吴欣宸, 董霈, 等. 高压共轨柴油机国产芯片控制系统研究[J]. 西安交通大学学报, 2024,58(6):43-52.

YANG Bo, WU Xinchen, DONG Pei, et al. Research on Domestic Chips Control System of High-Pressure Common-Rail Diesel Engine[J]. 2024, 58(6): 43-52.
杨博, 吴欣宸, 董霈, 等. 高压共轨柴油机国产芯片控制系统研究[J]. 西安交通大学学报, 2024,58(6):43-52. DOI： 10.7652/xjtuxb202406005.

YANG Bo, WU Xinchen, DONG Pei, et al. Research on Domestic Chips Control System of High-Pressure Common-Rail Diesel Engine[J]. 2024, 58(6): 43-52. DOI： 10.7652/xjtuxb202406005.

摘要

针对现有高压共轨柴油机电控单元高度依赖进口芯片、自主不足的问题

提出了基于全国产芯片的高压共轨柴油机电控单元方案。所设计的国产控制单元选用兆易创新的GD32F450芯片为控制核心

承担发动机数据采样、处理、存储与控制任务。首先

采用Boost升压电路提供喷油器峰值电流

利用分立器件设计双边驱动与电流反馈电路

在不依赖进口专用芯片的条件下

对喷油器驱动电流进行闭环控制; 然后

基于FreeRTOS操作系统

开发高压共轨柴油机底层驱动软件

实现对不同任务调度周期的精准控制; 最后

对所设计的电控单元进行了实验验证。结果表明

所设计的国产高压共轨柴油机电控单元功能齐全、工作稳定

双边驱动电路典型峰值电流为22 A

维持电流为10 A

最小喷射间隔时间为200 μs

多次喷射性能与Bosch系统相当。发动机不同转速条件下任务调度周期精准、实时性好

研究证实了高压共轨柴油机电控单元全国产化方案的可行性

对推动发动机电控技术自主可控提供了有益参考。

Abstract

Aiming at the problem that the high pressure common-rail diesel engine control unit(ECU)is highly dependent on imported chips and lack of independence

an ECU scheme based on fully domestic chips is proposed. The domestic micro-controller named GD32F450 produced by Gigadevice is adopted as the core of engine data sampling

processing

storage and control tasks. The Boost circuit is employed to provide the peak current of diesel injector. A double-side drive circuit with current feed-back functional module is designed using domestic discrete electrical devices and the drive current of the diesel injectors is controlled in the way of closed-loop without imported application specific integrated chip. Moreover

the bottom driving software of high pressure common-rail diesel engine is developed based on FreeRTOS and the execution period of different tasks has been precisely controlled. Finally

the ECU scheme is verified by experiments. The results show that the developed domestic ECU of a high pressure common-rail diesel engine proposed in this paper is full-featured and works stable. Additionally

the typical peak current and hold current of the double-side drive circuit is 22 A and 10 A

respectively. The minimum interval time of multi-injection is 200 μs and it is comparable to the Bosch system in terms of the multi-injection characteristics. The tasks execution period is controlled precisely and the bottom driving software has good real-time performance at varying engine speeds. This research confirms that the feasibility of the high pressure common-rail diesel engine ECU scheme based on fully domestic chips and provides a reference for promoting the self-developed engine ECU technology.

关键词

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