Exhaust port structure for rotary piston engines

Details Exhaust port structure for rotary piston engines Exhaust port structure for rotary piston engines

1984-04-17

1985-10-01

Vrablik, John J.

Internal-combustion engines

Rotary

With compression, combustion, and expansion in a single...

418 61A, F02B 5304, F01C 122

Patent

active

045439265

ABSTRACT:
A rotary piston engine having an exhaust port device in the rotor housing. The exhaust port device includes a single exhaust port formed in the rotor housing and an insert located in the exhaust port. The insert has a hollow body and partition walls separating the trailing part of the port opening into three sub-parts. The central one of the sub-parts is covered by a cover wall so that the port area is gradually increased to suppress exhaust noise. The insert can be rapidly brought into a high temperature during engine start so that the exhaust gas purifying system can rapidly be activated.

REFERENCES:
patent: 3448727 (1969-06-01), Kobayakawa
patent: 3483850 (1969-12-01), Yamamoto et al.
patent: 4237848 (1980-12-01), Korzhov et al.

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