| 摘要 |
PCT No. PCT/DE93/00020 Sec. 371 Date Dec. 8, 1993 Sec. 102(e) Date Dec. 8, 1993 PCT Filed Jan. 13, 1993 PCT Pub. No. WO93/14300 PCT Pub. Date Jul. 22, 1993.A rotary piston internal combustion engine has a casing including a central portion and two side portions. The central portion has a trochoidal inner mantle surface. An eccentric shaft extends through the casing and has an eccentric portion with a friction bearing. Main bearings for supporting the eccentric shaft in the casing are provided. A rotary piston, triangular in cross-section and having an interior chamber and axial edges with sealing members, is mounted on the friction bearing of the eccentric portion. The sealing members remain at all times in contact with the trochoidal inner mantle surface during rotation. A lubricating system for lubricating and cooling the rotary piston includes an oil cooler, a closed oil reservoir, and an oil filter. The lubricating system has a first pump and substantially axially extending channels provided in at least one of the side portions in the vicinity of the eccentric shaft. The first pump removes oil from the rotary piston and its interior chamber through the channels into the closed oil reservoir. A second pump is provided for returning oil from the closed oil reservoir through oil cooler and oil filter to the main bearings and the friction bearing.
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