Mercedes-Benz Aktiengesellschaft

Daimler Ag

Uwe Matena

Tobias Haerter

Christoph Kugel

Gerhard Gruber

Rolf Klumpp

Christoph Spengel

Jörg Weigold

Claus-Peter Hoptner

Franz-Paul Gulde

Rolf Kasper

Matthias Maisch

Alexander Nisch

In a chain drive particularly for an accessory drive of an internal combustion engine lubricant is supplied to the chain from a lubricant supply through a trunnion carrying the chain gear to a passage extending through the chain gear radially to an area adjacent the chain by way of a groove which is formed in a bearing sleeve disposed on the chain gear hub and which has a flow cross-section of a depth and width selected so as to form a throttle area to limit the lubricant flow.

Chain drive particularly for driving an accessory of an internal

In a bucket tappet guide structure for a valve tappet of an internal combustion engine having a bucket tappet slideably disposed in a tappet receiving bore, wherein the tappet has a chamfered front end providing for a tappet front face having a smaller diameter than the tappet body, a guide bore is disposed in front of the tappet bore and concentric therewith, the guide bore having a diameter which is larger than the diameter of the tappet bore, however by less than the difference between the diameter of the tappet body and the tappet front face so as to facilitate insertion of the bucket tappet into the tappet bore.

Bucket tappet guide

A constructionally simplified hydraulic pump has two pump elements which discharge from a common suction chamber. The flows can be alternatively fed in common to a pressure outlet or separately to two outlets, one of which outlets leads back into the suction chamber. The pressure-side chambers for the separated flows can be connected, via a unidirectional valve, through which, in the open state, the flow of one pump element can be united with that of the second pump element. The different flow guide modes are switched via control valves whose position depends only on the pressure prevailing at the pressure outlet of the hydraulic pump. The control valves to be switched are a common component of a single control slide valve.

Hydraulic pump

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Backnang, Germany

Uwe Matena