The present study investigates the corrosive influence of SO₂ on cylinder liner wear relative to H₂SO₄. Several charge gases with different concentrations of SO₂, H₂SO₄, and H₂O in air are fed to a motored light duty test engine that operates at 98 revolutions per minute (rpm) in order to resemble the corrosive combustion gas and cycle speed of large low‐speed two‐stroke marine engines. When the trapped cylinder gas is compressed, the H₂SO₄ and H₂O vapours can condense on the oil wetted liner surface, and the SO₂ can be absorbed in the oil film. Hereby the liner surface may be exposed to a corrosive attack. A blend of a base oil and a commercial marine engine cylinder lubrication oil is used in the experiments. During testing, oil samples are extracted from the engine and subsequently analysed for iron and sulphur accumulation (using an energy dispersive X‐ray fluorescence spectrometer) in order to couple cylinder liner wear with the amount of SO_2, H₂SO₄, and H₂O in the charge gas. In contrast to H₂SO₄, the wear of SO₂ is weak (if any), although the SO₂ accumulates/reacts considerably in the lube oil. The highest wear rates are found at elevated H₂O concentrations.

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SO2对H2SO4腐蚀对船用发动机汽缸套影响的实验研究

本研究研究了SO ₂相对于H ₂ SO ₄的腐蚀对气缸套磨损的影响。将几种空气中SO ₂，H ₂ SO ₄和H ₂ O浓度不同的充气气体送入电动轻负荷试验发动机，该发动机以每分钟98转（rpm）的速度运行，以类似于腐蚀性燃烧气体和循环大型低速二冲程船用发动机的转速。当捕获的气缸气体被压缩时，H ₂ SO ₄和H ₂ O蒸气可在油浸湿的衬套表面上冷凝，而SO ₂可被油膜吸收。因此，衬里表面可能受到腐蚀侵蚀。实验中使用了基础油和商用船用发动机气缸润滑油的混合物。在测试过程中，从发动机提取机油样品，然后分析铁和硫的积累（使用能量色散X射线荧光光谱仪），以便将汽缸套磨损量与SO _2， H ₂ SO ₄和H ₂澳电荷气体英寸 与H ₂ SO _4相比，SO ₂的磨损较弱（如果有），尽管SO ₂在润滑油中大量积聚/反应。H ₂ O浓度升高时，磨损率最高。