Rotary Piston Internal Combustion Engine

摘要

A rotary internal combustion engine of the Wankel type having a housing with a two lobed epitrochoidal inner peripheral surface, a shaft journalled in end housings and a rotor eccentrically mounted on the shaft and geared to rotate at one third the speed of said shaft whereby working chambers are formed between the flanks of the rotor and the housings which vary in volume as the rotor rotates. The rotor is cooled by a fully closed circuit system wherein pressurised gasses are circulated by a centrifugal fan which is directly mounted on the main eccentric shaft, and circulates the gases through a heat exchanger which is integrated into the cool sector of the rotor housing, all components being enclosed within the pressurised system and only one drive shaft using a single high pressure shaft seal assembly emerges from this system.

主权项

1. A rotary internal combustion engine comprising a housing having a two lobed epitrochoidal inner peripheral surface, end casings for the housing, a shaft journalled in the end casings, a three flanked rotor within the housing mounted on the shaft eccentrically with respect thereto and geared to rotate at one third speed of said shaft whereby working chambers are formed between the rotor flanks and the inner surface of the housing, the rotor having side seals which engage with the inner side faces of the end casings, internal passageways being formed in the rotor which align with a passageway or passageways in each end casing and which form part of a fully closed cooling circuit which includes a cooling heat exchanger, a circulating pump and connecting ducting, the circulating medium effecting the cooling consisting of blow-by gases which have leaked from the working chambers past the side seals of the rotor to the internal passages, and where the circulating pump is a centrifugal fan assembly fully contained inside the high pressure circuit and having an impellor mounted to rotate with the engine shaft at engine speed.