Lubrication and Ventilation System of Modern Engines - Measurements, Calculations and Analysis

Vehicular Engine Design

“…This paper provides a recent discussion (see Koch et al 2002). This paper provides a recent discussion (see Koch et al 2002).…”

Experimental Study of Lube Oil Characteristics in the PCV System and Effects on Engine Oil Consumption

“…Although some condensation could happen while sampling, the blowby gas temperature was already at room temperature (Tambient~30C) and little condensation was expected. Second, as discussed in Section 2.3.1.3.1 the difference method run between two different engineoperating conditions, which influenced the results for the highest load case especially, giving larger contribution to blowby oil consumption than obtained with the direct method [1] [5]. Figure 3-6 shows the comparison between the three different methods for 3500 rpm and different loads.…”

“…The increase in engine speeds and loads also affect the oil entrainment in the blowby gases by changing the oil droplet sizes as well as the flow magnitude and paths [7]. This has an impact in the PCV system oil consumption, since for actual separators efficiency drops for small size droplets and different lower pressure drops [5].…”

Automotive emissions control

“…in the fuel system. Another consideration while running is crankcase emissions, which contain small particles of oil [34]. These emissions have been regulated since the early 1960's [3] and are typically controlled with a positive crankcase ventilation (PCV) system.…”