公开(公告)号：US20150167596A1

公开(公告)日：2015-06-18

申请号：US14104491

申请日：2013-12-12

Applicant: Caterpillar Inc.

Inventor： Catalin M. Tiru ,  Jeremy Byrd ,  Keith W. Mellencamp

IPC: F02M25/07

CPC classification number: F02M26/73

Abstract: An Exhaust Gas Recirculation valve (EGR) for an engine is provided. The EGR valve includes an actuator having a shaft. The EGR valve includes a cooling block. The cooling block has an inlet configured to receive a coolant flow. A top face of the cooling block has a recess. The recess is configured to house at least a portion of the actuator therein. A through hole is provided on the cooling block and is configured to allow the shaft to pass therethrough. The cooling block includes an internal chamber in fluid communication with the inlet. The internal chamber is configured to provide a path for the coolant flow to circulate through the cooling block. An outlet of the cooling block is configured to discharge the coolant flow. A valve body is fluidly coupled to the cooling block. The valve body may include at least one cooling passage.

Abstract translation: 提供一种用于发动机的废气再循环阀（EGR）。 EGR阀包括具有轴的致动器。 EGR阀包括冷却块。 冷却块具有构造成接收冷却剂流的入口。 冷却块的顶面具有凹部。 凹部构造成将致动器的至少一部分容纳在其中。 在冷却块上设有通孔，构成为允许轴通过。 冷却块包括与入口流体连通的内部室。 内部室被构造成提供用于冷却剂流通过冷却块循环的路径。 冷却块的出口构造成排出冷却剂流。 阀体流体地联接到冷却块。 阀体可以包括至少一个冷却通道。