Internal-combustion engines – Poppet valve operating mechanism – Plural valve trains – single actuator
Patent
1984-03-12
1985-03-26
Lazarus, Ira S.
Internal-combustion engines
Poppet valve operating mechanism
Plural valve trains, single actuator
123 904, 123 9043, 123 9046, F01L 126
Patent
active
045066353
ABSTRACT:
In a valve control, at least two valves (16, 17) per cylinder head (11) are actuated in unison by a cross member (18) moved by a rocker arm (13). The rocker arm (13) and a guide member (15) are pivotally connected with the cross member (18) and form a parellelogram for the rectilinear guidance of the cross member (18). The valve clearance compensation and the accurate abutment of the cross member (18) at both valve stems is attained by adjustment of the fixed points of rotation of rocker arm (13) and guide member (15). Adjustable eccentrics are arranged in the points of rotation, which cooperate with at least one automatic adjusting mechanism (28, 30). The eccentricities (23, 26) of the two eccentrics are disposed perpendicular to one another in the starting position. During the entire operating period, freedom from clearance and a constant control geometry are assured for the valve control.
REFERENCES:
patent: 1198155 (1916-09-01), Schenker
patent: 1223762 (1917-04-01), Bugatti
patent: 1842426 (1932-01-01), Salisbury
patent: 2521176 (1950-09-01), Kutz
patent: 3208440 (1965-09-01), Portmann
Bailey R. S.
Lazarus Ira S.
MTU-Motoren- Und Turbinen-Union Friedrichshafen GmbH
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