The oil pump is very important in the lubrication system of the engine, he is responsible for generating oil pressure to send the oil to the vicinity of the various moving surfaces to provide lubrication, if the oil pump once a problem, do not pump the oil, then the engine will be scrapped immediately!

This is a small oil pump, this is a motorbike, hey, all the same, this belongs to the internal gear pump, widely used, gear inner rotor is the driving wheel, the outer rotor is responsible for the slave, you can see that this is eccentric, not in the middle, the gear design is very clever, to keep each time every moment inside and outside the rotor is in contact!

Joining the gears is a clockwise rotation, the left area will increase in volume, creating a negative pressure, the volume increase is compared to the bottom of the place! The volume peaks when it rotates right in the middle, then the right side gets progressively smaller, squeezing the oil out of it! This gear keeps both the inner and outer gears in contact the whole time it is running and does not leak!

In the involute tooth internal gear pump, the pinion and internal gear to be installed between a crescent spacer, in order to separate the suction chamber and the oil pressure chamber; pendulum tooth gear pump, also known as pendulum rotor pump, in this kind of pump, the pinion and the internal gear is only a difference of one tooth, and therefore do not need to set up a spacer. Internal gear pump pinion is the active wheel, the big gear for the driven wheel, in the work of the big gear with the pinion in the same direction of rotation.

There are various types of oil pumps, generally change the work is easy to produce a vacuum to extract the working medium and then reduce the working volume of the working medium will be pressurised to transport! Common hydraulic pumps are external gear pumps, internal gear pumps, rotor pumps and vane pumps. On the automotive lubrication system oil pumps, commonly used external gear pumps, internal gear pumps and rotor pumps!

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