Intake and exhaust system with a rotating port shaft for four-cy

Details Intake and exhaust system with a rotating port shaft for four-cy Intake and exhaust system with a rotating port shaft for four-cy

1989-06-02

1991-04-09

Dolinar, Andrew M.

Internal-combustion engines

Valve

Rotary

123190B, 123190BB, 123190E, F01L 700

Patent

active

050055437

ABSTRACT:
Improvements to a rotating-port-shaft intake and exhaust system in four-cycle internal combustion engines, the system being based on a hollow shaft mounted on a cylinder head and provided with ports leading independently to the cylinder chambers. The improvements consist in the fact that the cylinder head is made up of two halves which, on their opposing faces, are provided with semi-cylindrical cuts that form a cylindrical duct in which to house the port shaft. The cylinder head in question is provided with orifices for assembling sealing pistons with rectangular openings serving as ports and opposing the orifices/ports of the shaft. The upper faces of these pistons are ground with the same diameter as the shaft in order to achieve a perfect fit between both parts.

REFERENCES:
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patent: 3945364 (1976-03-01), Cook
patent: 4010727 (1977-03-01), Cross et al.
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patent: 4114639 (1978-09-01), Cross et al.
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patent: 4751900 (1988-06-01), Ruffolo
patent: 4782801 (1988-11-01), Ficht et al.
patent: 4834038 (1989-05-01), Montagni

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