Abstract: The invention relates to a system for engine oil storage and filtration in an internal combustion engine, comprising at least one oil storage device as part of an engine oil circuit, at least one filtration device, and at least one oil delivery pump, wherein the system is characterized in that the filtration device is connected upstream of the oil delivery pump in relation to the delivery direction of the oil, with only suction filtration being provided.

Abstract: A laser welding tool comprises a first and a second tool part for fixing a first welding article to a second welding article. The two welding articles are arranged at least partially between the two tool parts. The second tool part comprises at least two partial elements which are displaceable independently of one another toward the first tool part for pressing the second welding article against the first welding article.

Abstract: The invention relates to a housing cover made from plastic on an engine housing or gearbox housing made from metal in an internal combustion engine, said housing cover being secured by a plurality of fastening screws (5) against the housing, wherein the housing cover is secured against a bearing surface of the housing by an encircling fastening flange (3) made from plastic, and the fastening flange (3) is provided with penetration openings (4) through which the fastening screws (5) extend into threaded bores (13), which are coaxial with respect thereto, in the housing, wherein the fastening screws (5) are supported by a screw head (7) against the fastening flange (3) directly or with the interposition of a washer, the fastening flange (3) bears without a gap against the bearing surface of the housing, and the fastening screws (5) are secured within the threaded bore (13) against automatic unscrewing.

Abstract: The invention relates to a captive retaining means for a fastening screw (5) on an oil sump (1), said fastening screw passing through a penetration opening (4) in the oil sump (1), wherein the oil sump (1) can be arranged with respect to a gearbox housing or engine housing in such a manner that the penetration opening (4) is approximately aligned with a connection opening in the engine housing or gearbox housing, and that the fastening screw (5) is insertable into the connection opening, wherein the captive retaining means comprises at least one clamping bushing (16) which engages non-positively around a threaded stem (6) of the fastening screw (5), wherein the clamping bushing (16) is inserted directly into the penetration opening (4) and is fixed axially therein, and wherein the clamping bushing (16) is mounted in a floating manner in the circumferential direction in the penetration opening (4).

Abstract: A laser welding tool comprises a first and a second tool part for fixing a first welding article to a second welding article. The two welding articles are arranged at least partially between the two tool parts. The second tool part comprises at least two partial elements which are displaceable independently of one another toward the first tool part for pressing the second welding article against the first welding article.