Rotary piston engine with seals and gas groove means in the roto

Details Rotary piston engine with seals and gas groove means in the roto Rotary piston engine with seals and gas groove means in the roto

1976-05-04

1978-03-21

Vrablik, John J.

Rotary expansible chamber devices

Grooved abutting cylinder-rotating member end surfaces

Grooved working member surface

418 81, 418142, F01C 1908, F02B 5502

Patent

active

040801187

ABSTRACT:
A rotary piston engine has a housing structure which includes a peripheral wall, having a trochoidal inner surface, and end walls secured to the peripheral wall with the latter situated therebetween. A rotor, having each end face formed with at least one set of side seal grooves and at least one oil seal groove, is housed within the housing structure for planetary motion. For avoiding leakage of blowby gas from any one of working chambers defined between the rotor flanks and the trochoidal inner surface into the inside of an oil seal in the oil seal groove past side seals in the side seal grooves, an annular gas groove is formed on at least one end face of the rotor. This annular gas groove is communicated to the oil seal groove by means of a passage formed in a partition wall separating the gas groove from the oil seal groove. The blowby gas collected in the gas groove can be recovered in the intake chamber through an intake port, provided in eitheror both of the end walls, during the planetary motion of the rotor.

REFERENCES:
patent: 3261542 (1966-07-01), Jones
patent: 3447512 (1969-06-01), Winkelmann et al.
patent: 3891357 (1975-06-01), Davis et al.

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