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首页> 外文会议>ASME Internal Combustion Engine Division technical conference >EFFECT OF DIESEL INJECTION SPLIT ON COMBUSTION AND EMISSIONS PERFORMANCE OF A NATURAL GAS - DIESEL DUAL FUEL ENGINE AT A LOW LOAD CONDITION
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EFFECT OF DIESEL INJECTION SPLIT ON COMBUSTION AND EMISSIONS PERFORMANCE OF A NATURAL GAS - DIESEL DUAL FUEL ENGINE AT A LOW LOAD CONDITION

机译：低负荷条件下柴油喷射裂解对天然气-柴油双燃料发动机燃烧和排放性能的影响。

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As an inexpensive and low carbon fuel, the combustion of natural gas reduces fuel cost and generates less carbon dioxide emissions than diesel and gasoline. Natural gas is also a clean fuel that generates less particulate matter emissions than diesel during combustion. Replacing diesel by natural gas in internal combustion engines is of great interest for industries. Dual fuel combustion is an efficient way to apply natural gas in internal combustion engines. An issue that to a certain extent offsets the advantage of lower carbon dioxide emissions in natural gas - diesel dual fuel engines is the higher methane emissions and low engine efficiency at low load conditions. In order to seek strategies to improve the performance of dual fuel engines at low load conditions, an experimental investigation was conducted to investigate the effect of diesel injection split on combustion and emissions performance of a heavy duty natural gas - diesel dual fuel engine at a low load. The operating conditions, such as engine speed, load, intake temperature and pressure, were well controlled during the experiment. The effects of diesel injection split ratio and timings were investigated. The engine efficiency and emissions data, including particulate matter, nitric oxides, carbon monoxide and methane were measured and analyzed. The results show that diesel injection split significantly reduced the peak pressure rise rate. As a result, diesel injection split enabled the engine to operate at a more optimal condition at which engine efficiency and methane emissions could be significantly improved compared to single diesel injection.
机译：作为一种廉价的低碳燃料，天然气的燃烧降低了燃料成本，并产生了比柴油和汽油更少的二氧化碳排放量。天然气也是一种清洁燃料，燃烧过程中产生的颗粒物排放量少于柴油。在工业中，用天然气代替内燃机中的柴油是非常重要的。双重燃料燃烧是将天然气应用于内燃机的有效方法。在一定程度上抵消了天然气（柴油双燃料发动机）中较低的二氧化碳排放量的优势的一个问题是，在低负荷条件下甲烷排放量较高且发动机效率较低。为了寻求改善低负荷条件下双燃料发动机性能的策略，进行了一项实验研究，以研究柴油喷射分流对重型天然气-柴油双燃料发动机在低负荷条件下的燃烧和排放性能的影响。加载。在实验过程中，对发动机的转速，负载，进气温度和压力等操作条件进行了很好的控制。研究了柴油喷射分配比和正时的影响。测量并分析了发动机效率和排放数据，包括颗粒物，一氧化氮，一氧化碳和甲烷。结果表明，柴油机喷射分流显着降低了峰值压力上升速率。结果，柴油喷射分流使发动机能够在更理想的条件下运行，与单次柴油喷射相比，发动机效率和甲烷排放量可以得到显着改善。

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