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US 6,854,431 B2Granted
Internal combustion engine comprising a hydraulic system
AssigneeRobert Bosch GmbH
InventorsHermann Gaessler, Udo Diehl, Karsten Mischker, Rainer Walter, Bernd Rosenau, Stefan Franzl, Juergen Schiemann, Christian Grosse, Volker Beuche, Stefan Reimer
Life of this patent
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Abstract
An internal combustion engine includes a hydraulic system with a hydraulic pump. A lubricant system for moving parts of the engine is also provided, which includes a lubricant pump. To enable making the engine smaller, it is proposed that the hydraulic pump is connected to the lubricant system in such a way that it can be lubricated by the lubricant.
Claims6
An internal combustion engine (10), comprising
- a hydraulic system (32) that includes a hydraulic pump (34), and
- a lubricant system (14), for lubricating moving parts of the engine (10) including a lubricant pump (16), the hydraulic pump (34) being connected to the lubricant system (14) in such a way that lubricant is pumped from the lubricant pump (16) through a line (48) to the hydraulic pump (34) for lubricating the hydraulic pump (34), wherein the hydraulic pump (34) pumps a hydraulic fluid that differs from the lubricant of the lubricant system (14) of the engine (10), wherein the hydraulic fluid has a lower viscosity.
Dependencies are inferred from the claim text.