Technically, the pump does not create pressure, it only creates the flow. The pressure is created by restriction.
Say a pump can flow 1 quart per minute (qt/m).
With no restriction, there is no pressure, just a flow of 1 qt/m.
If you create a restriction (say a pipe fitting on the end of the pump smaller than the discharge of the pump), you then have pressure. But the pump still flows 1 qt/m.
The smaller you make the pipe, the more pressure you have (all while still flowing 1 qt/m).
The pump creates the same flow regardless of pipe diameter/pressure (to a point when the restriction becomes greater than the capability of the pump to flow at the same rate).

Flow (created by the pump) and pressure (a result of restriction of flow) are related, but not the same thing.

 

This statement is inaccurate.

 

You seem to be so well versed on the subject, where's your explanation?

 

From the dictionary......
Pressure.
noun

1. 1.
   continuous physical force exerted on or against an object by something in contact with it.

 

Which is a result of restriction. Not the flow.

You are having an issue separating the two.

Look at it this way.
Does an engine create speed? No. In creates horsepower/torque.
You can have a 1 hp engine that has no speed at all. it is just creating horsepower/torque (flow).
You can also have a 1 hp engine that can go from 0 to 20 mph depending on the trasnmisssion gearing (restriction).

Not a perfect example, but shows the difference between something creating flow and what causes that flow to have pressure.

 

LOL. You really should of really finished school. Hint, - try researching what these guys are saying.

 

I’m not having an issue separating the two. Both you and mbb have said the pump does not create pressure. The dictionary clearly states what pressure actually is. An exertion of force applied to an object. If you wish to argue with the dictionary by all means. But without the pump to exert force and an object to apply it to oil/ passage restriction there is no pressure created. Now if you or mbb said the pump does not create pressure on its own then I could buy that. But stating the pump does not create pressure I would have to disagree.

 

I would if they would say the correct things. No need to be derogatory. It only makes you look like a moron.

 

Everybody is kind of right here, except for the insults. The force of the impeller blades themselves as they spin creates the pressure. Force per unit of area. The pressure would dissipate immediately if there was nothing impeding the fluid as it left the impeller blade. It's dissipation of that pressure that matters, and it's affected at both ends of the fluid's path. The pump creates pressure, the restrictions maintain it.

Besides that, oil pressure is just a secondary way to estimate what matters, which is volume of oil passing through the bearings. Engines should really have flow meters, not pressure gauges. Tight bearings in an engine with a loose oil pump could give the right pressure reading but the bearing would be running dry.

 

Give yourself SOME credit....+1 for honesty.