| 摘要 |
A two-stage proportional control valve assembly (10) regulates flow of a first fluid such as an engine exhaust gas using a second fluid such as engine oil for power. A directional valve (22) under control of an electrical actuator (116) regulates flows of the second fluid to operate a fluid-powered actuation (24). A mechanical connection (48, 70) between the fluid powered actuator (24) and a flow control valve (20) for regulating flows of the first fluid enables the electrical actuator (116) to indirectly control the flow control valve with a minimum draw of electrical power. <IMAGE> |
