Describes two sump

Describes two sump

Wet and dry sump

We know that can provide lubrication oil, so the presence of oil and where this leads to the concept of the sump, and wet and dry sump is divided into two.

Wet sump commonly used in most models, when the engine is stopped, the oil is stored therein. In addition, the crankshaft is not immersed in the oil, because this is the case the crankshaft running resistance will increase, but also easy to machine oil into the combustion chamber, causing the phenomenon of burning oil, so here to remind owners, oil can not add too much, otherwise it will lead oil fever.

When the engine work, the bulk of the crank rod will rotate with the crankshaft into the oil, whereby the oil out of the sputtering to the crankshaft and elsewhere, travel sputtering lubrication.

However, because of oil are stored in the sump when the car hard acceleration, due to inertia, the front portion of the oil will flow back, causing little more behind the front, not touch the oil front, rear soaked in oil in the case, so As a result, we are prone to the rear of the crankshaft of the above mentioned phenomena such as burning oil and coke. And because the front can not touch oil, so the oil can be brought up in a significant reduction, splash lubrication effect also will deteriorate, increasing wear and tear. The rapid deceleration, and above the opposite effect occurs.

Whether or burning oil lubrication not have adverse effects on the engines, here mainly for those high-powered supercar high load operation, in order to deal with this situation, resulting in a dry sump.

The so-called dry-sump oil pan is to give up the past, design ideas, the establishment of a separate oil sump, splash lubrication abandon the way, all with pressure lubrication, while the bottom of the engine is a fuel-efficient design of the disc to collect lubrication oil and put them in the sump. Thus, for intense action under the car, the engine will still be able to get a good lubricating effect, which is why many supercars, such as the Corvette ZR1, the use of dry sump of reasons. In addition, the use of dry sump, engine height is also reduced, enabling the car to have a lower center of gravity for the super sports car in terms of handling stress, low center of gravity means better handling, it can be said to serve two purposes.

As for why not all models are used dry sump, mainly due to the dry sump that all use pressure lubrication, oil pump is required to bear a heavier task, and oil pump work is part of the engine power loss needs, when the engine speed operation, more stringent requirements for lubrication, oil pump work intensity becomes greater, but will restrict the engine's power output, which is why dry sump appear more high-power models above, since sufficient power with extra energy to supply the oil pump. If we are a 1.0L mini car, towing vehicle forward has been struggling to great lengths in the sub-part to the oil pump, even if you step on the accelerator in the end, it is difficult to have a sufficient power output.