公开(公告)号：US20090133399A1

公开(公告)日：2009-05-28

申请号：US11987070

申请日：2007-11-27

申请人： Joshua David Keyes ,  Jennifer Lynn Wilson ,  James Harris Mutti ,  Stephen Michael Wiley

发明人： Joshua David Keyes ,  Jennifer Lynn Wilson ,  James Harris Mutti ,  Stephen Michael Wiley

IPC分类号： F02D23/00

CPC分类号： F02D23/00 ,  F02B29/04 ,  F02B37/22 ,  F02B39/16 ,  F02B2039/168 ,  F02M26/10 ,  Y02T10/144

摘要： A turbocharger system for use with an engine having a braking mode of operation is disclosed. The turbocharger system may have a turbocharger with variable geometry, and a sensor situated to generate a signal indicative of a turbocharger speed. The turbocharger system may also have a controller in communication with the turbocharger and the sensor. The controller may be configured to vary the geometry of the turbocharger during the engine's braking mode of operation to increase a backpressure of the engine. The controller may also be configured to vary the geometry of the turbocharger to reduce the backpressure when the signal indicates a speed of the turbocharger within an amount of a desired speed.

摘要翻译： 公开了一种与具有制动操作模式的发动机一起使用的涡轮增压器系统。 涡轮增压器系统可以具有可变几何形状的涡轮增压器，以及用于产生指示涡轮增压器速度的信号的传感器。 涡轮增压器系统还可以具有与涡轮增压器和传感器通信的控制器。 控制器可以被配置为在发动机的制动操作模式期间改变涡轮增压器的几何形状以增加发动机的背压。 控制器还可以被配置为当信号表示涡轮增压器的速度达到期望速度的量时，改变涡轮增压器的几何形状以减小背压。