Invention Grant
US09322363B2 System and method for reducing vane sticking in a variable geometry turbocharger 有权
用于减小可变几何涡轮增压器中的叶片粘滞的系统和方法

System and method for reducing vane sticking in a variable geometry turbocharger
Abstract:
A method for operating an engine system is described herein. The method includes moving a plurality of vanes in a variable geometry turbocharger toward a closed position in response to tip-out and after moving the plurality of vanes toward the closed position, moving an EGR valve from a fully closed position toward an open position in response to tip-in, the EGR valve in fluidic communication with an exhaust sub-system upstream of the turbine. The method further includes, after moving the EGR valve toward an open position, moving the plurality of vanes based on one or more of a driver-requested torque, engine speed, and engine temperature.
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