Multivalve cylinder engine

Details Multivalve cylinder engine Multivalve cylinder engine

1988-12-08

1990-06-12

Cross, E. Rollins

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

Air or combustible mixture entering the combustion chamber...

123188M, 123308, F02B 1500

Patent

active

049323776

ABSTRACT:
An internal combustion engine in which each cylinder has a plurality of inlet ports (17,19) and a plurality of outlet ports (14), each port being openable and closeable by means of a respective valve (12,13,11). The inlet and outlet valves (12,13,11) are disposed with their center lines substantially on opposite sides of a cylinder center plane (16) and angled generally towards said center plane (16). There are three, or possibly more, valves on at least one of said sides, arranged with two outer valves (12) separated by one, or possibly more, inner valve (13). The angle of inclination with respect to said center plane (16) for the outer valves (12) is less than or equal to the angle of inclination for the inner valve (13). The valves are preferably operated directly with a separate camshaft (18,20,15) being provided for each one or more valves inclined at the same angle.

REFERENCES:
patent: 4549510 (1985-10-01), Miyakoshi
patent: 4617896 (1986-10-01), Yoshikawa
patent: 4622940 (1986-11-01), Yoshikawa
patent: 4766866 (1988-08-01), Takii
patent: 4805569 (1989-02-01), Suzumura et al.

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