Deactivatable valve control arrangement for internal combustion

Details Deactivatable valve control arrangement for internal combustion Deactivatable valve control arrangement for internal combustion

1993-03-18

1993-12-28

Cross, E. Rollins

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9039, F01L 134, F01L 118, F01L 126

Patent

active

052730069

ABSTRACT:
A valve control arrangement for first and second inlet valves of an internal combustion engine includes two cams, one of which is optimized for operation at low speed and/or load, while the other cam is optimized for operation at high speed and/or load. The first valve is permanently driven and, when the second valve is deactivated, it is driven from the first cam by a first actuation lever. The second valve is driven by a second actuating lever after engagement actuation of a first coupling between the second actuation lever and a third actuating lever which is driven by the second cam. Another coupling between the first and second actuating levers couples the first valve with the second cam when required for optimum operation.

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