Diesel Pilot-Ignited Lean Combustion Characteristics of a Linear Hydrogen Engine

doi:10.7652/xjtuxb201705005

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Diesel Pilot-Ignited Lean Combustion Characteristics of a Linear Hydrogen Engine

更新时间：2025-07-09

- Diesel Pilot-Ignited Lean Combustion Characteristics of a Linear Hydrogen Engine
- Vol. 51, Issue 5, Pages: 31-36(2017)
- 作者机构：
  
  1. 华北水利水电大学机械学院,郑州,450045
  2. 北京理工大学机械与车辆学院,北京,100081
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201705005
  CLC： TK441
- Online First：10 May 2017，
  
  Published：2017
- 稿件说明：
移动端阅览
Diesel Pilot-Ignited Lean Combustion Characteristics of a Linear Hydrogen Engine[J]. 2017, 51(5): 31-36.
DOI：

Diesel Pilot-Ignited Lean Combustion Characteristics of a Linear Hydrogen Engine[J]. 2017, 51(5): 31-36. DOI： 10.7652/xjtuxb201705005.

摘要

直线氢内燃机特殊的自由活塞运动导致了较低的燃烧反应速率和放热等容程度。为减少燃烧时间损失

提高能量利用效率

在一台直线氢内燃机中尝试应用了引燃稀薄燃烧技术。首先通过原理试验验证了引燃稀薄燃烧技术的可行性

然后采用一种耦合活塞运动的迭代计算方法对柴油引燃直线氢燃料内燃机燃烧性能和运行特点进行了模拟研究。结果表明:采用引燃燃烧技术

有助于提高直线氢内燃机的燃烧速度

减小放热时间损失

增加指示效率。相对于传统点燃燃烧

引燃技术能够提高直线氢内燃机活塞往复运动频率和压缩比

增加直线氢内燃机输出功率

但是引燃燃烧会轻微加重直线氢内燃机的NO

污染物排放。

Abstract

The special free piston motion of linear hydrogen engines results in slow combustion rate and low heat release around the top dead center. To improve the combustion rate and linear engine efficiency

the diesel pilot-ignition technology was introduced in a linear hydrogen engine to accelerate the heat release rate. A principle experiment was performed to validate the feasibility of the diesel pilot-ignition technology for linear hydrogen engines with variable compression ratio

and iterative computation was conducted to describe the main combustion characteristics and operation performances of the linear hydrogen engine. The results show that the diesel pilot-ignition technology is helpful to improve the combustion rate and engine efficiency and reduce the combustion loss. Compared with the traditional spark-ignition technology

the diesel pilot-ignition technology can enhance the linear hydrogen engine's speed

compression ratio and piston motion stroke

leading to increased output power of the linear engine. However

a slightly increased pollutant product NO

is also found with this technology.

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Keywords

references

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