The invention relates to a pump for fluid media, more particularly to a cooling water pump for internal combustion engines with an electric motor configured as a disk armature for actuating the pump, said electric motor being directly connected to an impeller (6) of the pump. A simple structure and high operational reliability are achieved in that a driving flange (18) projects radially outward on the outer circumference of the pump's impeller, magnets (19) or windings (20) being molded therein for the contactless drive of the impeller (6).
A radial-flow pump (1), and especially a coolant pump for an internal combustion engine, comprising an impeller (2) provided with vanes (5) and a directing device (4) including at least one temperature- and/or speed-sensitive element for temperature-dependent control of the coolant flow, where at least one impeller vane (5) and/or the directing device (4) is configured as a speed-sensitive element. In order to increase efficiency, the proposal is put forward that the impeller vanes (5) should be elastically deformable by Coriolis forces of the coolant flow, the discharge angles (.alpha.), which are preferably defined between impeller vanes (5) and impeller tangential planes (.epsilon.), decreasing with an increase in speed.
The present invention relates to an apparatus for adjusting a camshaft of an internal combustion engine with at least one electromotor which produces, by way of a planetary gear, the adjustment of the camshaft with respect to a pinion, with the planetary gear comprising a first ring gear and a second ring gear as well as at least a first planet wheel which is in engagement with the first ring gear and at least a second planet wheel which is in engagement with the second ring gear and which is rigidly connected with the first planet wheel. An efficient position with low adjusting moments is achieved in such a way that several planet sets are provided which each consist of a first planet wheel and a second planet wheel, that the pinion is fixedly connected with the first ring gear, that the camshaft is fixedly connected with the second ring gear, that the first planet wheel and the second planet wheel have a slightly different diameter and that the first planet wheel and the second planet wheel are held on a planet cage which is held concentrically to the axle of the camshaft and the pinion.
A cooling water pump, for an internal-combustion engine in particular, with a casing provided with at least one bearing designed to support a pump shaft, with a sealing element devised to seal the bearing against a working space containing the cooling agent as well as with a leakage chamber arranged in the casing and receiving the cooling agent that leaks through the sealing element. A particularly simple way of production is achieved by the fact that the leakage chamber may be brought out of shape by a slider pulled in an essentially transverse direction and preferably normal to the plane on the axis of the pump shaft.
The invention relates to a centrifugal pump with an impeller which is arranged in a pump housing and can be driven by a shaft which is rotatably held in the pump housing by way of at least one bearing, with the bearing, which is preferably arranged as a roller bearing, being arranged in a bearing holder which is detachably connected with the pump housing. In order to simplify the production of the water pump and to facilitate maintenance it is provided that the bearing holder, at the end facing the impeller, comprises an assembly part which is preferably integrally designed with the pipe section.