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Bilingual Paper Reading · 中英对照精读

大型二冲程柴油机气缸注油率:共轨润滑系统的喷射速率实验研究

准大一 · 轮机工程 × 船舶动力 × 实验流体力学 —— 气缸润滑注油率精读材料
原文:arXiv:2307.03408 2023年7月7日发布 arXiv 预印本(physics.flu-dyn) 气缸润滑 × 共轨系统 × 注油速率测量 附英文摘要朗读音频

一、论文档案

英文标题Injection rate of cylinder lubrication oil in large two-stroke marine diesel engines using a common rail lubrication system
中文标题大型二冲程船用柴油机共轨润滑系统的气缸注油率(喷射速率)研究
作者Bjørn Christian Dueholm, Jesper de Claville Christiansen, Benny Endelt, Nikolaj Kristensen(机构未在素材中标注)
发布时间2023年7月7日(v1)|分类:physics.flu-dyn(流体动力学)
一句话概括用燃油喷射领域的「博世注油速率测量法」实测电控共轨气缸注油器:开启后约 1 ms 建立质量流量、直至喷嘴空化壅塞;对高黏度气缸油,2 mg–21 mg 注油量范围内预测误差 ≤5%,为「按需注油」铺路。
💡 为什么选这篇给你:① 二冲程大型柴油机是远洋商船的「心脏」,气缸润滑直接决定缸套—活塞环寿命与颗粒物排放;② 这篇把燃油喷射领域经典的 Bosch 测量法「迁移」到高黏度气缸油上——方法迁移的思路本科生完全能读懂;③ 全文以实验为主、数字具体(1 ms、5%、2.5 mg),是练「数字听力」的绝佳材料。

二、核心术语表(先扫一遍再读正文)

英文术语中文大白话解释
two-stroke marine diesel engine二冲程船用柴油机曲轴转一圈(360°)就完成进气—压缩—做功—排气的低速柴油机,大型商船的主力推进机。
cylinder lubrication oil气缸润滑油在气缸套与活塞环之间形成油膜、防止干摩擦的机油,是本文的主角。
common rail lubrication system共轨润滑系统一根高压油轨同时向多个注油器供油,像「油压母线」,每个注油器独立电控。
electronically controlled injector电控注油器由电磁线圈(solenoid)控制的注油阀,能精确决定何时注油、注多少油。
injection rate / rate of injection注油率(喷射速率)单位时间内流过喷嘴的油量变化曲线,决定油滴雾化与油膜分布。
Bosch rate of injection method博世注油速率测量法利用「管内压力波→流速」原理测量瞬时喷射流量的经典实验方法,原本为燃油喷射设计。
mass flow build-up time质量流量建立时间注油器开启后流量从 0 涨到稳定值所需的时间,本文测得约 1 ms。
cavitation / choked nozzle空化 / 喷嘴壅塞油流高速通过缩孔时局部压力低于饱和蒸气压而产生气泡,气泡堵塞喷嘴、限制流量。
cylinder liner气缸套活塞在其中往复运动的圆筒形工作面,磨损最大的位置在靠近顶部处。
piston ring pack活塞环组装在活塞上的密封环组,承担密封燃气、刮油、向缸套布油的任务。
swirl injection principle (SIP)旋流喷射原理利用扫气旋流把油雾带到气缸套表面着附的注油技术。
scavenging air扫气二冲程机换气时从扫气口进入气缸的新鲜空气,在缸内形成旋流。
particulate matter颗粒物(PM)燃烧与机油挥发产生的微小固体颗粒,是 IMO 重点管控的排放物。
dosing / dosage accuracy定量给油 / 计量精度按需精确控制每次注油量,既不过润滑(浪费+污染)也不欠润滑(磨损)。
HydraWay HVXA15高黏度试验油性质接近加热后气缸油的试验流体,用来验证博世法对高黏度流体的适用性。

三、摘要中英对照(精读核心)

🎧 音频在文末,可先听一遍原文再读;每个英文句都配了逐句翻译。

摘要 Abstract

EN · 原文
This paper investigates a common rail cylinder lubrication system for large two-stroke marine diesel engines using electronically controlled injectors.
CN · 翻译
本文研究一套用于大型二冲程船用柴油机的共轨气缸润滑系统,该系统采用电控注油器
EN · 原文
The system is studied using the Bosch rate of injection measurement technique
CN · 翻译
该系统采用博世注油速率测量法进行研究。
EN · 原文
The common rail injector has a buildup of mass flow of approximately 1 ms as the injector opens until the nozzle is choked from cavitation.
CN · 翻译
共轨注油器开启时,质量流量约在 1 ms 内建立起来,直到喷嘴因空化(气穴)而壅塞。
EN · 原文
Using a highly viscous fluid, the Bosch rate of injection method is able to predict the injected amount with an error of 5% or lower for nearly the entire tested delivery range of 2 mg to 21 mg.
CN · 翻译
使用高黏度流体时,博世注油速率法能在几乎整个测试注油量范围(2 mg 至 21 mg)内,以不超过 5% 的误差预测注油量。
EN · 原文
Lubrication of cylinder liners and piston rings is a crucial parameter in operating a two-stoke marine diesel engine efficiently.
CN · 翻译
气缸套与活塞环的润滑,是高效运行二冲程船用柴油机的关键参数。
EN · 原文
Both over and under lubrication is harmful for the engine, so the ability to accurately dose the cylinder oil is very important.
CN · 翻译
润滑过度与润滑不足对发动机都有害,因此精确计量气缸油的能力非常重要。
EN · 原文
A mass flow build up time of 1 ms promises high accuracy of dosage even down to 2.5 mg per injection.
CN · 翻译
1 ms 的质量流量建立时间,保证即使低至每次 2.5 mg 的注油量也能精确计量。
EN · 原文
This paves the way for injecting the oil where and when it is needed, which in turn will improve engine performance and lower harmful emissions.
CN · 翻译
这为「在需要的地方、需要的时间注油」铺平了道路,进而改善发动机性能、降低有害排放

关键词 Keywords:Cylinder Lubrication 气缸润滑 | Common Rail 共轨 | Rate of Injection 注油速率 | Bosch Method 博世测量法 | Cavitation 空化

注:原文摘要第 2、3 句之间无句号断句(原稿如此,素材与 arXiv 原文一致),为便于逐句学习已按语义拆分为两句,英文文字未作任何改动。

四、引言精选(为什么这个问题重要)

① 气缸润滑与排放:用最少的油,减最多的颗粒物

EN · 原文
The slow speed uniflow scavenged two-stroke engine has become the most widespread propulsion system for large-scale ships Woodyard (2009). With the continuous developments in both the construction and operation of the engines, new challenges have arisen. Recently, the environment and the emission of harmful particles have been in focus. The regulations for where and how much vessels are allowed to emit are becoming stricter and this forces the industry to continue evolving to meet new standards. These regulations include both the elimination of greenhouse gasses from shipping by the end of the century and a reduction in harmful emissions such as SOx, NOx and particulate matter IMO (2018). Cylinder Lubrication oil contributes to the emission of particulate matter when it is left on the cylinder liner exposed to the combustion taking place in the engine. Since it is necessary to have the oil on the cylinder liner, and exposing it to the combustion is unavoidable, only using the necessary amount is key to reducing the amount lost to combustion. The contribution to potential particulate matter emissions from ships is approximately divided evenly between lubrication oil and fuel Dragsted and Toft (2004); Aabo et al. (2001).
CN · 翻译
低速直流扫气二冲程发动机已成为大型船舶最主流的推进系统(Woodyard (2009))。随着发动机建造与运行技术的持续发展,新挑战不断出现。近年来,环境与有害颗粒物排放成为焦点——对船舶「在哪里排放、排放多少」的法规越来越严,迫使行业持续进化以满足新标准。这些法规既包括本世纪末消除航运温室气体,也包括削减 SOx、NOx 与颗粒物等有害排放(IMO (2018))。气缸润滑油残留在气缸套上、暴露于缸内燃烧时,会贡献颗粒物排放。由于缸套上必须有油、且油暴露于燃烧不可避免,因此「只用必要的那点油」才是减少燃烧损耗的关键。船舶潜在颗粒物排放的贡献,大约在润滑油与燃油之间平分(Dragsted and Toft (2004); Aabo et al. (2001))。

② 前车之鉴:电控注油系统实测省油 24.65%

EN · 原文
One author explored the topic of optimising control of the injection of lubrication oil on an electronically controlled cylinder lubrication system (ECCLS) He et al. (2019a, b). The ECCLS investigated is similar to the electronically controlled systems produced by many engine manufacturers. The system injects cylinder lubrication oil into the piston ring pack, however, there are however some differences with regards to the control algorithm. The system was tested on a real engine and showed improved cylinder condition and resulted in 24.65% in lubrication oil savings.
CN · 翻译
有学者研究了电控气缸润滑系统(ECCLS)注油控制的优化问题(He et al. (2019a, b))。该 ECCLS 与许多发动机制造商生产的电控系统类似,把气缸润滑油注入活塞环组,但在控制算法上存在一些差异。该系统在真实发动机上测试,气缸状态得到改善,并节省了 24.65% 的润滑油

③ 共轨系统的潜力:排气中油损下降 50% 以上

EN · 原文
Recently authors have investigated designing new systems for the lubrication delivery Milanese et al. (2021). The performance of the injectors was simulated using AMESim, and they found using a common rail system to inject into the piston ring pack led to over 50% reduction in loss of oil measured in the exhaust using a sulphur tracing technology. Many of the advantages of the common rail systems are already known from the fuel delivery systems on the same engines. More direct pressure buildup leads to a more instantaneous injection, which makes it easier to control the delivered amount over the load range of the engine.
CN · 翻译
近期有作者研究了润滑供给新系统的设计(Milanese et al. (2021)):用 AMESim 仿真注油器性能,发现用共轨系统向活塞环组注油,可使排气中测得的油损(硫示踪法)降低 50% 以上。共轨系统的许多优势早已在同型发动机的燃油供给系统中得到验证——压力建立更直接,喷射更瞬时,因而更容易在发动机整个负荷范围内控制供给量。
💡 这是全文最有味道的一句“More direct pressure buildup leads to a more instantaneous injection, which makes it easier to control the delivered amount over the load range of the engine.”——共轨的底气来自「压力建立更直接 → 喷射更瞬时 → 全负荷范围可控」。把燃油喷射领域已验证的优势「平移」到润滑系统,正是本文的出发点。

④ 本文目标与研究对象:旋流喷射原理(SIP)

EN · 原文
Because of this, the aim of this study is twofold: • Experimentally characterising an electronically controlled valve injecting marine cylinder lubrication oil. • Verifying the validity of the Bosch rate of injection method for highly viscous fluids.
CN · 翻译
因此,本研究目标有二:一是实验表征电控注油阀喷射船用气缸润滑油的过程;二是验证博世注油速率测量法对高黏度流体的有效性
EN · 原文
The cylinder lubrication system (CLS) used to investigate this is the only common rail CLS on the market for two-stroke marine diesel engines. The system uses single hole injectors without a return flow pipe. The valves are electronically controlled by a solenoid and spray the oil in an upwards motion towards the top of the liner where the wear is highest and the demand for lubrication oil largest. The injection of oil happens before the piston passes the injection points and relies on the swirling motion of the scavenging air to deposit the oil on the liner surface. The technology is known as the swirl injection principle (SIP), and when using this technology, the rate of injection becomes very interesting, as it strongly influences how the system should be timed and the breakup of the oil, again quite similar to fuel injection systems Payri et al. (2021).
CN · 翻译
本文研究的气缸润滑系统(CLS)是市场上唯一面向二冲程船用柴油机的共轨 CLS:采用无回油管的单孔注油器,阀体由电磁线圈电控,油雾向上喷向缸套顶部——那里磨损最严重、对润滑油需求最大。注油发生在活塞经过注油点之前,依靠扫气的旋流运动把油沉积到缸套表面,即旋流喷射原理(SIP)。使用该技术时,注油率变得非常关键,因为它强烈影响系统定时与油束破碎,与燃油喷射系统十分相似(Payri et al. (2021))。

五、论文贡献(3 个要点)

EN · 原文
1. Twofold aims. Experimentally characterising an electronically controlled valve injecting marine cylinder lubrication oil. • Verifying the validity of the Bosch rate of injection method for highly viscous fluids.
CN · 翻译
1. 双重研究目标。实验表征电控注油阀的喷射过程;验证博世测量法对高黏度流体的有效性——把成熟方法搬到新场景,必须重新验证前提。
EN · 原文
2. 5% accuracy over 2 mg to 21 mg. Using a highly viscous fluid, the Bosch rate of injection method is able to predict the injected amount with an error of 5% or lower for nearly the entire tested delivery range of 2 mg to 21 mg.
CN · 翻译
2. 2 mg–21 mg 范围内误差 ≤5%。对高黏度流体,博世法在几乎整个测试注油量范围内预测误差不超过 5%——测量方法「迁移成功」有定量证据。
EN · 原文
3. From 1 ms build-up to on-demand injection. A mass flow build up time of 1 ms promises high accuracy of dosage even down to 2.5 mg per injection. This paves the way for injecting the oil where and when it is needed, which in turn will improve engine performance and lower harmful emissions.
CN · 翻译
3. 从 1 ms 建立时间到按需注油。1 ms 的流量建立时间让低至 2.5 mg 的注油量也能精确计量,为「在需要的地方、需要的时间注油」铺路——把计量精度变成新的控制自由度。

六、结论中英对照

EN · 原文
The injection rate of a common rail swirl injection principle cylinder lubrication system was tested by the Bosch rate of injection method. The results show:
CN · 翻译
本文用博世注油速率测量法测试了一套共轨、旋流喷射原理气缸润滑系统的注油率。结果如下:
EN · 原文
• A rise in mass flow of approximately 1 ms until cavitation in the nozzle starts choking the flow. When the choking begins, the cavitation is violent enough to atomise the oil. This results in a fast spray development, which is a strength when using the swirl injection principal for lubrication.
CN · 翻译
质量流量约在 1 ms 内建立,直至喷嘴空化开始壅塞流量;壅塞开始时,空化剧烈到足以把油雾化,形成快速发展的油束——这正是旋流喷射注油的一大优势。
EN · 原文
• The injected amount as a function of ramp time is approximately a straight line, making is easier to accurately dose the correct amount of oil together with the rise and fall times close to 1 ms for the mass flow.
CN · 翻译
注油量随斜坡时间近似呈直线关系,加上质量流量上升/下降时间都接近 1 ms,让「精确计量正确的油量」变得更容易。
EN · 原文
• The Bosch rate of injection method is capable of predicting the delivered amount of an injection within 5% of the weighted amount for almost the entire tested range of ramp times for the highly viscous fluid used called HydraWay HVXA15, which has similar properties to heated cylinder lubrication oil.
CN · 翻译
对于所用的高黏度流体 HydraWay HVXA15(性质接近加热后的气缸油),博世注油速率法在几乎整个测试斜坡时间范围内,都能以加权量的 ±5% 以内预测单次注油量。
EN · 原文
Being able to accurately dose lubrication oil at from mg per injection and up, together with the fast rise and fall times for the mass flow, paves the way for new possibilities of lubrication strategies. These include being able to inject several times in a piston stroke and deliver the needed amount every time.
CN · 翻译
能够从毫克级注油量起精确计量润滑油,加上质量流量快速的上升/下降时间,为新的润滑策略开辟了可能——例如在同一个活塞行程内多次注油,每次都精确给出所需油量。

注:素材原文含个别原稿笔误(如 swirl injection principal、making is easier),以及一处缺失数值(at from mg per injection),为忠于素材一律原样保留,未作改写或补全。

七、编者解读:这篇论文到底讲了什么(大白话版)

  1. 问题:气缸润滑「多了污染排放、少了磨损拉缸」,而传统非回注阀注油系统只能粗放定量。想让二冲程机高效运行,必须先搞清楚一件事——注油器每次到底吐出多少油、吐得多快?
  2. 做法:把燃油喷射领域经典的「博世注油速率测量法」用到气缸油上:用一根充满高黏度试验油(HydraWay HVXA15,性质接近加热后的气缸油)的测量管,记录注油全过程的瞬时质量流量曲线。
  3. 结果:注油器开启后约 1 ms 流量即建立,直到喷嘴空化壅塞;在 2 mg–21 mg 的注油量范围内,博世法预测误差 ≤5%,连 2.5 mg 的微量注油都能精确给到。
  4. 最值钱的观点:「流量建立快 + 计量准」把注油策略从「活塞每转一圈固定喷一次」升级为「一个冲程内多次、按需注油」——精度本身变成了新的设计自由度。
  5. 工程意义:精确注油直接减少颗粒物排放(船舶颗粒物排放约一半来自润滑油)并削减运营成本;对轮机员而言,这是「少用油、少排放、不伤机」的三赢。
🎯 对保研的启示:这篇论文是「方法迁移」的范本——把成熟测量技术用到新场景(高黏度流体)时,作者先检验原方法的前提假设是否成立,再用实验数据说话。复试时若能讲清「我借用了什么方法、前提条件是什么、怎么验证的」,比堆砌模型名词更有说服力。

八、给准大一的阅读路线图 & 延伸方向

📖 怎么读这篇论文(三遍法)

  1. 第一遍(10 分钟):只读摘要和术语表,回答三个问题——研究对象是什么?用了什么测量方法?误差是多少?
  2. 第二遍(20 分钟):读引言 + 结论,重点体会「为什么注油精度这么重要」(排放 + 省钱)以及结论的三个结果。
  3. 第三遍(30 分钟):读引言中对共轨润滑系统与旋流喷射原理(SIP)的描述,跳过所有文献引用和编号,只看文字;不懂的术语回查术语表。

🚀 这个方向你能延伸做什么

  • 现在就能做:查一查 IMO 2023 年生效的船舶碳强度指标(CII、EEXI)与硫排放法规,算一笔「注油率 × 营运小时」的油费与排放账——直观感受「少注油 = 省钱 + 减排」。
  • 大一→大二:学好流体力学(伯努利方程、空化现象)与大学物理;博世测量法背后的「压力波测流速」正是流体力学经典应用。
  • 大二→大三:方向可扩展为柴油机燃油/润滑喷射系统、电控共轨技术、缸套—活塞环磨损在线监测、船舶排放控制(EGR/SCR)、数据驱动的船舶设备健康管理(PHM);国内可关注《内燃机学报》《中国造船》与 CIMAC 国际内燃机会议文献。

九、英文摘要朗读(练听力用)

先盲听一遍→再看对照稿→再听一遍。目标是听出每个数字(1 ms、5%、2 mg 至 21 mg、2.5 mg)和术语(common rail、cavitation、Bosch rate of injection、swirl injection)。

翻译仅供学习交流 · 论文原文版权归作者所有 · 如有出入请以英文原文为准
📄 原文:arXiv:2307.03408 · 制作日期:2026-08-10