Robert Boschgmbh

Kautex Textron Gmbh & Co. Kg

Bernd Osswald

Thomas Schwegel

Peter Schelhas

Klaus Gebert

Hans-Peter Stiefel

Martin F Winter

Erwin Franieck

Eric Plantier

Joerg Sigrist

Alfred Mueller

The invention proposes an electric pump () for delivering a fluid. The electric pump () has a first pump component () with a first interface () and has a second pump component (). The first pump component () and the second pump component () are in contact with one another at the first interface (). Here, the first interface () has an incline () with respect to a plane running perpendicular to a longitudinal axis () of the electric pump ().

Geometry for the compensation of axial gaps arising in electric pumps

Known tank flanges have a main filter which has a filter housing with an inlet and an outlet, and a first connecting duct for connecting the main filter to a feed unit. The filter housing is integrated in the tank flange, and filter fabric is inserted into the filter housing and the filter housing is closed off by a filter cover. The inlet of the filter housing is connected to the pressure side of a feed unit and the outlet leads to an internal combustion engine. A disadvantage is that, in order to exchange the filter fabric, the large-area filter cover must be opened, as a result of which a large amount of fuel vapor is dissipated to the atmosphere. In the case of the tank flange according to the invention, the exchangeability of the main filter is simplified by virtue of the main filter being embodied as a filter cartridge. It is provided according to the invention that the inlet of the main filter extends into the first connecting duct of the tank flange and therein forms a sealed connection.

Tank flange

A measuring element which has been lengthening in the flow direction to provide a detachment zone which is shifted downstream from the region of the measuring resistor, so that end flow disturbances no longer affect the region of the measuring resistor, and adulteration of the measurement values is prevented. The measuring element is especially suitable for determining the throughput or flow rate of the aspirated air of mixture-compressing internal combustion engines.

Measuring element for determining a flow rate of a flowing medium

A flow rate meter for determining the mass or flow rate of flowing air, having a temperature-dependent measuring resistor disposed in an air bypass conduit. The air bypass conduit has a convergent portion in the region of the measuring resistor in which the air flow is accelerated. As a result of the air flow the effects of any air disturbances upon the measuring element are reduced. The following geometric relationships are advantageous: l.sub.1 /l.sub.s &gt;3.8, l.sub.1/2 &gt;1.5, l.sub.1 /1.sub.3 &gt;2.0, l.sub.1/4 &gt;9.0, l.sub.5 /l.sub.s &gt;1.5, l.sub.5 /l.sub.6 =1.7 to 1.9, b.sub.1 /b.sub.s &gt;40.0, b.sub.1 /b.sub.2 &gt;2.0, l.sub.1 /b.sub.1 &gt;3.5, and l.sub.5 /b.sub.3 =5.5 to 6. The air flow rate meter is especially suitable for determining the mass or flow rate of aspirated air in mixture-compressing engines with externally supplied ignition as well as air-compressing, self-igniting engines.

Air flow rate meter

Growing community of inventors

Ludwigsburg, Germany

Bernd Osswald