Internal-combustion engines – Multiple cylinder
Patent
1989-04-18
1990-05-08
Wolfe, Willis R.
Internal-combustion engines
Multiple cylinder
123193C, F02M 3510
Patent
active
049228633
ABSTRACT:
A cast cylinder for an internal combustion engine having an intake valve cavity located on one side of the piston bore, an intake bore for communication with a carburetor located on the other side of the piston bore, and an internal passageway cast therein communicating the intake bore and the intake valve cavity. The internal passageway is curved and circumscribes a portion of the intake bore. A walled hollow tube having initially closed ends is embedded in the cast cylinder during casting as a permanently retained casting core. Subsequently the ends of the embedded tube are machined open to communicate with the intake valve cavity and the intake bore, respectively, to define the internal passageway.
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Macy M.
Tecumseh Products Company
Wolfe Willis R.
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