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Mobiles F9


Wheel change
Save Energy


Lubrication 1
Lubrication 2
Lubrication 3 - Oil
Lubrication 4 - Engine Oil
Lubrication 5 - Additives
Lubrication 6 - Oil Filter 1
Lubrication 7 - Oil Filter 2
Lubrication 8 - Oil Change?
Lubrication 9 - Centrifuge
Lubrication 10 - Oil Level
Lubrication 11 - Press. Circulation
Lubrication 12 - Dry Sump
Lubrication 13 - Oil Pump
Lubrication 14 - Gear Pump
Lubrication 15 - Crescent Pump
Lubrication 16 - Rotor Pump
Lubrication 17 - Ventilation
Lubrication 18 - Oil Sump
Lubrication 19 - Oil Separation
Lubrication 20 - Viscosity
Lubrication 21 - Oil Cooling
Lubrication 22 - Heat Exchanger
Lubrication 23 - Gearbox Oil
Lubrication 24 - Gearbox
Lubrication 25 - Shaft Sealing Ring
Lubrication 26 - Seal - Gasket
Lubrication 27 - Circulation
Lubrication 28 - Grease

Oil consumption
History 1
History 2
History 3
History 4
History 5
History 6
History 7
History 8
History 9

Lubrication 13 - Variabel Oil Pump

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The less important change: vehicles with a display as standard have no dipstick. The oil level is measured by an ultrasonic transducer. The workshop can control its work with a 'special tool', a universal measuring rod possible to use for all models.

Above you can view a variable oil pump in two stages switching over from just below 2 bar to about 3 bar at medium engine speed depending on additional parameters. If the controlling fails completely, a spring secures setting the highest pressure automatically. By the way, it may be that the pump doesn't switch back to low pressure during the first 1000 km, even at idle speed. That is part of the rules during the break-in period.

The pressure is reduced because of CO2-saving. 4 percent estimated by some specialists are slightly generous. In the case of reducing an electromagnetic valve deflects oil pressure against the spring, whereby the housing of the impeller is twisted and moved so that the delivery rate and thus the pressure drops.

Of course, a certain oil pressure is needed, possibly for removing heat, but certainly for its involvement in certain control processes as for adjusting the camshaft. May be 2 bar are necessary for this. In earlier times the oil pressure was between less than 1 and more than 3 bar.

Did you know that such a pump accomplishes an enormous capacity, well over one cubic meter per hour, with each kW motor power proportional increasingly in also smallest engines. Meanwhile, there exist even electrically driven, for example, to supply the bearing of a turbo charger after sudden engine shut-off. 08/16

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