EGR VALVE APPARATUS

摘要

An EGR valve apparatus (16) regulates the amount of exhaust gas recirculated in an EGR system. The EGR valves (28) are opened or closed by a rotatable shaft (30) which is actuated by a motor (14). Alternatively, the valves can be balanced on the shaft, the valves moving in opposing direction during rotation. An inline poppet can be employed to overcome pressure in the system prior to movement of the valves. In another alternative embodiment, the motor rotates threaded shaft to move a pintle towards and away from an orifice.