1
What is?
is located in a lower portion of the engine oil pan, removable, and sealing a crankcase sump of the housing.
2
Function
a closed crankcase sump housing, to prevent impurities from entering, and the collection and storage of the lubricating oil flowing back from the friction surface of the diesel engine, part of the heat dispersed to prevent oxidation of the lubricating oil. Multi sump stamped from thin steel plate, more complex shape generally cast iron or an aluminum alloy casting molding. Stabilizing oil with the internal baffles, in order to avoid oil surface caused by the shock bumps Jijian, lubricants facilitate precipitation of impurities, with the side dipstick for checking oil. In addition, the bottom of the oil pan is also equipped with the lowest drain plug.
3
Type
Wet [123 ] most vehicles are available in the market to meet wet sump, the reason is named wet sump engine crank arm of the crank and connecting rod each revolution of the crankshaft is immersed in a lubricating oil sump will , lubricate, and because the high speed of the crankshaft, each crank arm is immersed in high-speed sump will evoke certain oil slick and oil mist lubrication of the crankshaft and bush called splash lubrication. Such lubricating oil in the sumpThere is a liquid level in certain requirements, if too low, the crankshaft and the connecting rod arm is not immersed in the lubricant, leading to lack of lubrication; if the lubricating oil level is too high will lead to immerse the entire crankshaft, the crankshaft rotation resistance increases, resulting in engine performance degradation, while the lubricating oil easily into the cylinder combustion chamber, causing the engine burning oil, spark plug fouling problems.
wet
used in many dry sump engine of the car. It does not store the oil in the oil pan, the more accurate to say that there is no oil sump. These movements the friction surface of the crankcase are lubricated by the oil pressure of the one orifice. As the dry sump engine oil sump cancel the storage function of the height of the original oil pan is greatly reduced, the height of the engine also will be reduced, lowering the center of gravity is in favor of the benefits of control. The main advantage is to avoid those unfavorable phenomena due to the intense driving resulting from wet sump to occur.
However, because all the pressure of the lubricating oil from the oil pump to be. The oil pump is powered by rotation from the crankshaft gear is connected through. Although the need to provide a pressure although wet sump engine lubrication oil pump camshaft. But this pressure is very small, oil pump power required is very small. However, in the dry sump engine, this lubrication pressure requires much larger strength. And oil pump size is also better than wet sump engine oil pump much larger. So this time powered oil pump also needs some more. This is the same as the supercharged engine oil pump need to consume part of the power of the engine. Especially in high speed, the engine speed increases, the friction member also exercise intensity increases, the lubricating oil is also required more, so it is necessary to provide greater pressure oil pump, the power consumption of the crankshaft also intensified.