Casing for liquid-cooled rotary piston engines

Details Casing for liquid-cooled rotary piston engines Casing for liquid-cooled rotary piston engines

1976-10-28

1978-06-27

Vrablik, John J.

Rotary expansible chamber devices

Heat exchange or non-working fluid lubricating or sealing

418179, 123 4171, F01C 2106, F01C 2110

Patent

active

040972070

ABSTRACT:
Casing for liquid-cooled rotary piston engines having a rotor housing made of aluminum based alloy and side housings made of cast iron. The rotor and side housings are formed with cooling liquid passages which are connected together at the junction between the rotor and side housings. At each junction of the passage in the rotor housing with corresponding one in the side housing, the diametrical dimension of the passage in the aluminum alloy rotor housing is smaller than that of the passage in the cast iron side housing so that a shoulder is formed at the junction of the passages by aluminum alloy surface projecting into the passage beyond the edge of the passage opening in the cast iron side housing. The arrangement is effective to prevent or suppress electrochemical corrosion of the casting material.

REFERENCES:
patent: 3033180 (1962-05-01), Bentele
patent: 3575538 (1971-04-01), Berkowitz et al.
patent: 3791781 (1974-02-01), Fujiyama et al.
patent: 3975122 (1976-08-01), Hackbarth et al.

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