发表于 2010-11-30 22:06 IP属地：未知
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油气分离器，边拆边看
上次觉得机油有消耗，大家都说换油气分离器会好，结果我换了，换的估计是国产的，还不如之前原装的。
这次保养前打算把原来那个拆洗一下，顺便研究研究。
我现在也只能拆到这个状态。
原厂介绍：
System Overview
A primary oil separator is installed on the cylinder block just below the engine coolant pump. A baffle plate in the oil pan upper section prevents engine oil from being drawn out of the sump at the gas extraction point. In the primary oil separator, the blow-by gases flow through a labyrinth to separate coarse particles from the oil. The primary oil separator has two separation stages which work on the baffle-plate principle.
The separated oil fl ows back along oil return lines into the oil pan. The blow-by gases continue to flow from the primary oil separator through a channel in the cylinder block to the cylinder head. The large cross-section channels results in a low crankcase breather gas flow rate which prevents oil droplets from traveling along the sides.
A fine oil separator is integrated with the cylinder head cover. A single-stage cyclone separator with a parallel bypass valve filters out any residual ultra-fine oil particles.
The separated oil flows into the cylinder head through a port in the cylinder head cover; from there, the oil is returned to the oil pan. To prevent intake of the engine oil under excessively high vacuum, a check valve is installed at the end of the oil return duct. This check valve is installed in the honeycomb insert in the oil pan.
The blow-by gases flow along a duct integrated in the cylinder head cover to a two-stage pressure regulating valve. The pressure regulating valve prevents excessively high vacuum from developing within the cylinder block.
The pressure regulating valve is installed in a housing together with two check valves. The check valves regulate blow-by gas flow depending on pressure conditions in the intake manifold. If a vacuum is present in the intake manifold (for example, at low engine speed) when the exhaust gas turbocharger is not producing boost pressure, the blow-by gases are drawn directly into the intake manifold. If boost pressure is present, the blow-by gas is inducted on the intake side of the turbocharger.
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