Intake system of a multi-cylinder internal combustion engine

Internal-combustion engines – Multiple cylinder

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123 52MB, 123188M, 123308, 123432, 123442, 123568, F02B 2902, F02B 3100

Patent

active

042626390

ABSTRACT:
A multi-cylinder engine comprising a carburetor housing forming therein at least two branch mixture passages. Each of the branch mixture passages is connected to a respective intake port. A throttle valve of the carburetor is provided for each cylinder. Each of the throttle valves is arranged in the respective branch mixture passage. A common connecting passage and branch connecting passages which are connected to the common connecting passage are provided. Each of the branch connecting passages opens into the respective intake port in the vicinity of the rear face of the valve head of the corresponding intake valve. In addition to the common connecting passage, another common connecting passage and second branch connecting passages, which are connected to the other common connecting passage, are provided. Each of the second branch connecting passages opens into the respective intake port at a position located downstream of the corresponding throttle valve.

REFERENCES:
patent: 1727265 (1929-09-01), Aseltine
patent: 1856736 (1932-05-01), Teeter
patent: 2028585 (1936-01-01), Blake et al.
patent: 2105780 (1938-01-01), Davis
patent: 3364911 (1968-01-01), Baudry et al.
patent: 3382856 (1968-05-01), McIlroy
patent: 3505983 (1970-04-01), Hartel
patent: 4194474 (1980-03-01), Endo

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