公开(公告)号：US4217313A

公开(公告)日：1980-08-12

申请号：US898917

申请日：1978-04-21

Applicant: Anatoly V. Dmitrievsky ,  Vladimir F. Kamenev ,  Jury M. Pashin ,  Nikolai M. Prudov ,  Alexandr I. Simatov ,  Andrei S. Tjufyakov ,  Jury N. Shishkin ,  Jury I. Yamolov

Inventor： Anatoly V. Dmitrievsky ,  Vladimir F. Kamenev ,  Jury M. Pashin ,  Nikolai M. Prudov ,  Alexandr I. Simatov ,  Andrei S. Tjufyakov ,  Jury N. Shishkin ,  Jury I. Yamolov

IPC: F02M3/045 ,  F02M3/08 ,  F02M3/04

CPC classification number: F02M3/045 ,  F02M3/08 ,  Y10S261/19 ,  Y10S261/74 ,  Y10S261/78

Abstract: A device for reducing noxious emissions from carburetor engines of the internal combustion type, the body of which comprises at least one main passage designed for feeding a fuel-air mixture to the engine cylinders and has an emulsion passage. The main passage accommodates a throttle valve which divides it into an upstream throttle space and a downstream throttle space, as viewed in the direction of the fuel-air mixture flow. The emulsion passage communicates with the upstream throttle space substantially in the area where the throttle valve upper edge locates when the throttle valve is in the closed position and also communicates further, as viewed in the direction of the emulsion flow, via an adjustable throttle element with a chamber which communicates via an air passage with the upstream throttle space and via a passage with the downstream throttle space. The chamber accommodates a movable element adapted to move coaxially with the passage for the purpose of closing same. A sleeve is installed in the chamber in such a manner that a narrow annular passage is formed between the inner wall of the sleeve and the outer wall of the movable element. Said annular passage connects with the emulsion passage downstream of the adjustable throttling element with respect to the direction of the emulsion flow and separates the chamber space communicating with the downstream throttle space from the chamber space which communicates with the upstream throttle space.

Abstract translation: 一种用于减少内燃式化油器发动机的有害排放的装置，其内部主体包括至少一个主通道，其设计用于将燃料 - 空气混合物供给到发动机气缸并具有乳液通道。 主通道容纳节流阀，该节流阀将燃料 - 空气混合物流的方向分为上游节流空间和下游节流空间。 当节流阀处于关闭位置时，乳液通道与上游节气门空间连通，节气门上边缘位于该区域，并且在乳化液流动方向上观察时还通过可调节节流元件与 通过空气通道与上游节流空间和经由具有下游节流空间的通道连通的室。 该室容纳适于与通道同轴移动以便关闭通道的可移动元件。 套筒以这样的方式安装在腔室中，使得在套筒的内壁和可移动元件的外壁之间形成窄的环形通道。 所述环形通道相对于乳液流动方向与可调节流元件下游的乳液通道连接，并且将与下游节流空间连通的室空间与与上游节流空间连通的室空间分离。