Efficient internal combustion engine valve actuato

专利名称：Efficient internal combustion engine valve

actuator

发明人：Scott A. Leman,Sean O. Cornell申请号：US10066822申请日：20020204公开号：US06722349B2公开日：20040420

专利附图：

摘要：An engine with an efficient valve actuator is disclosed. The engine employs afirst force to hold a valve of the engine open during a normal valve event and a secondforce to hold the exhaust valve open during an exhaust gas recirculation event. The valve

actuator may be operated using pressurized fluid adapted to extend an actuator plungerthrough a cylinder. The first force may be derived by a mechanically driven actuator, whilethe second force may be derived from a high pressure rail of the engine. A control valvemay be employed to direct either low pressure or high pressure oil to the valve actuatorcylinder.

申请人：CATERPILLAR INC

代理机构：Marshall, Gerstein, Borun

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