Title:
【発明の名称】燃料排出バルブを有する高圧燃料噴射装置
Document Type and Number:
Japanese Patent JPH08501613
Kind Code:
A
Abstract:
An improved high pressure fuel injector for internal combustion engines in which problems of hysteresis delays and fuel leakage at the commencement of the metering process can be avoided without affecting the ability to precisely control the fuel supply pressure by the provision of a way for the metering and injection plunger to be acted upon only by the pressure of the incoming fuel supply. An improved metering and injection plunger spring arrangement provides a valving of the drain path that prevents leakage through drain passages and/or about the metering and injection plunger during the fuel metering and injection phases. Also, a double check valve arrangement is incorporated into the plunger seat disc to minimize the possibility of back-flow leakage of fuel during injection of the fuel from the metering and injection chamber.
Inventors:
Cola Rick, Old Rich S.
Villany, Tibor Jay.
Villany, Tibor Jay.
Application Number:
JP50757394A
Publication Date:
February 20, 1996
Filing Date:
September 16, 1993
Export Citation:
Assignee:
Cummins Engine Company, Inc.
International Classes:
F02M57/02; F02M59/32; F02M59/44; (IPC1-7): F02M57/02
Attorney, Agent or Firm:
Atsushi Nakajima (2 outside)