Alfa Laval Corporate Ab

Haldex Brake Products Ab

Alfdex Ab

Mats Ekeroth

Claes-Goran Carlsson

Jan Skoog

Rolf Ridderstrale

Claes Wase

Magnus Wide

A centrifugal separator for cleaning gas containing contaminants includes a stationary casing enclosing a separation space through which a gas flow is permitted, a gas inlet extending through the stationary casing and permitting supply of the gas to be cleaned, a rotating member including a plurality of separation members arranged in said separation space and being arranged to rotate around an axis of rotation, a gas outlet configured to permit discharge of cleaned gas and including an outlet opening through a wall of the stationary casing, a drainage outlet configured to permit discharge of liquid impurities separated from the gas to be cleaned and an electrical motor for rotating the rotating member. The centrifugal separator further includes a control unit configured to control the operation of the electrical motor and to drive the electrical motor in at least two different operational modes and to further switch between operational modes depending at least on information of at least one measured internal parameter of the electrical motor.

Control of a centrifugal separator

Upon cleaning of crankcase gas generated during operation of an internal combustion engine in its crankcase, a centrifugal separator is used, which includes a rotor arranged for rotation by means of a driving motor and arranged by its rotation suck crankcase gas from the crankcase through a conduit to the centrifugal separator. During operation of the combustion engine a parameter, e.g. a measurement of the load on the combustion engine is sensed, the magnitude of said parameter being related to the amount of crankcase gas generated per unit of time in the crankcase. Depending upon a sensed change of the sensed parameter the rotational speed of the rotor of the centrifugal separator is changed in a way such that the gas pressure in the crankcase is maintained at a predetermined value, or within a predetermined pressure interval, during the operation of the combustion engine.

Method and a device for cleaning of crankcase gas

For cleaning of crankcase gas produced by an internal combustion engine, that is arranged for propelling a vehicle, use is made of a centrifugal separator having a centrifugal rotor that is mounted on the vehicle. The cleaning efficiency of the centrifugal separator is changed by changing the rotational speed of an electrical motor, that is connected to a source of current on the vehicle and arranged for driving said centrifugal rotor.

Brake lining wear indicating device

Growing community of inventors

Landskrona, Sweden

Mats Ekeroth