Title:
【発明の名称】燃料流に渦を与え,絞ることによりドーナッツ状の燃料噴霧を発生させる燃料インジェクタ
Document Type and Number:
Japanese Patent JPH07505938
Kind Code:
A
Abstract:
The fuel injector has several swirl passages in a fuel swirl and needle guide member that direct swirl fuel onto the frusto-conical surface of a valve seat member that is disposed at the injector's nozzle end. The needle lift is such that with the needle unseated to open the injector to flow, the swirl fuel is throttled as it passes between the rounded tip end of the open needle and the frusto-conical surface of the seat member. The throttling tends to spread the swirl flow so that it is more uniform in the circumferential sense. If the injector is closed before equilibrium flow occurs, a toroidal shaped fuel cloud is created; if the injector is closed after equilibrium flow occurs, an ellipsoidal shaped fuel cloud is created.
Inventors:
Daily, Paul Dee
Brux, Mark A
Robert E. Forris
Brux, Mark A
Robert E. Forris
Application Number:
JP51088893A
Publication Date:
June 29, 1995
Filing Date:
October 23, 1992
Export Citation:
Assignee:
Siemens Automotive Corporation
International Classes:
F02M51/08; F02M51/06; F02M61/16; F02M61/18; (IPC1-7): F02M61/18; F02M51/08
Attorney, Agent or Firm:
Honda Takashi