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发表于 2021-2-4 21:44
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armin 发表于 2021-2-4 21:28
大哥,我不懂。那你说的机油高温蒸汽胶质怎么影响的DPF。学习学习
准确说的话,应该不是机油蒸汽,应该是机油里的不可燃成分,也就是灰分,最终影响DPF。无论多新的内燃机,总会有一定量的机油消耗。
“The most important thing is piston cleanliness,” says Shell’s Arcy. “This will have [a] direct effect on DPF maintenance. There are several factors that determine DPF maintenance intervals and overall service life. The main factor is the amount of oil that is burned. Controlling piston cleanliness, which in turn helps control oil consumption, will have a big effect on DPF service life. Diesel engine oil must provide strong piston cleanliness, otherwise oil consumption will be high, and DPF ash buildup will be accelerated. A clean engine with clean pistons will prevent oil from passing by the rings and entering the combustion chamber and being consumed [burned].”
Since the burned oil contains non-combustible materials, Arcy explains, ash accumulates in the DPF, with the amount of ash directly correlating to the amount of oil consumed as well as the amount of “ash forming components within the oil, such as detergents and anti-wear components.”
Engines inherently consume engine oil. There are performance characteristics of oil within the engine that can lessen or worsen the level of consumption, but the sulfated ash content is the greatest challenge impacting DPF clogging. According to the research conducted by Chevron, 90 percent of DPF clogging is caused by engine oil-related ash, and regardless of the engine oil used, Booth says a certain amount of the engine oil will be consumed.
https://www.fleetmaintenance.com ... zed-dpf-performance
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