check valve

Abstract

The invention relates to a check valve which is particularly suitable for being arranged in an oil backflow channel. The oil backflow channel is arranged between a crankcase and an oil chamber of an oil pan, and the check valve is provided with a casing (10). The inside of the casing (10) is provided with a plate-shaped stamped valve element (12). The valve element (12) is fixed via a holding element (14) connected with the casing particularly through locking element pairs (28, 30). The plastic casing is surrounded by a metal sleeve (16) preferably, and the metal sleeve can be pressed into the opening of the crankcase in an interference mode.

Description

technical field

[0001] The invention relates to a non-return valve which is particularly suitable for use in motor vehicles. The non-return valve is preferably designed to be arranged in a return channel which leads from the motor component to an oil reservoir, such as an oil sump. Background technique

[0002] In order to discharge the oil or oil mist present in the crankcase, an oil separation takes place in the crankcase by means of an oil separator. The separated oil is led back into the oil reservoir, in particular into the oil sump. Evacuation of secondary air must be avoided here. For this purpose, it is known to provide non-return valves. Usually, the non-return valve is integrated directly into the oil separator or into the cylinder head cover. This has the disadvantage that the oil column necessary to open the non-return valve has an extremely low height, which can cause problems in oil return flow. This leads to an increased accumulation of oil in the oil sep...

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