公开(公告)号：WO2014052385A1

公开(公告)日：2014-04-03

申请号：PCT/US2013/061578

申请日：2013-09-25

Applicant: WALBRO ENGINE MANAGEMENT, L.L.C.

Inventor： BOSTIAN, Scott, D. ,  BRAUN, Matthew, A. ,  BURNS, Gary, J.

IPC: F02M17/04 ,  F02M7/00

CPC classification number: F02M17/04 ,  B01F3/04985 ,  B01F15/0479 ,  B01F2215/0086 ,  F02M1/16 ,  F02M7/00 ,  F02M7/08

Abstract: A carburetor provides a supplemental fuel supply to an engine and includes a body, a fuel metering diaphragm and a fluid pump. The fuel metering diaphragm defines part of a fuel metering chamber and a reference chamber and has at least a portion that is movable relative to the body to increase and decrease the volume of the fuel metering chamber to control fuel flow in the fuel metering chamber. The fluid pump is carried by the carburetor or another component upstream of the carburetor and has an outlet in fluid communication with the metering reference chamber and an actuator arranged to discharge fluid through the outlet to increase the pressure within the metering reference chamber and thereby increase the fuel flow rate from the fuel metering chamber to the air-fuel passage to provide a supplemental fuel supply to the engine.

Abstract translation: 化油器为发动机提供补充燃料，并且包括主体，燃料计量隔膜和流体泵。 燃料计量隔膜限定燃料计量室和参考室的一部分，并且具有至少一部分可相对于主体移动的部分，以增加和减小燃料计量室的容积，以控制燃料计量室中的燃料流量。 流体泵由化油器或化油器上游的另一部件承载，并且具有与计量参考室流体连通的出口和布置成通过出口排出流体的致动器，以增加计量参考室内的压力，从而增加 从燃料计量室到空燃料通道的燃料流量，以向发动机提供补充燃料。