Title:
ELECTROMAGNETIC FUEL SPILL VALVE
Document Type and Number:
Japanese Patent JP3507106
Kind Code:
B2
Abstract:
PURPOSE: To improve durability of a spring on the opening valve side by a method wherein fuel fed with a pressure to an injection nozzle is spilled at a given timing.
CONSTITUTION: An electromagnetic spill valve (an electromagnetic fuel spill valve) 25 is disposed in the middle of the spill passage 24 of a fuel injection pump 1. In the electromagnetic spill valve 25, a needle valve 32 is slidably disposed in the fuel passage 30b of a valve body 30. An armature 29 is attached to the needle valve 32 through a rod 28. An electromagnet 27 is disposed to a casing 26. A spring containing chamber 33 formed in the needle valve 32 is partitioned away from a fuel passage 30b by a spring guide 35 and a spring 34 on the opening valve side is contained in the spring containing chamber 33. During energization of the electromagnet 27, the needle valve 32 is held in a valve closing position. When switching from energization to non- energization is effected, the needle valve 32 is moved to a valve opening position through the energizing force of the spring 34 on the valve opening side and high pressure spill fuel flows in a gap between the needle valve 32 and the valve body 30.
Inventors:
Enomoto Shige
Nobuo Kato
Hiroyasu Kanamori
Nobuo Kato
Hiroyasu Kanamori
Application Number:
JP28533693A
Publication Date:
March 15, 2004
Filing Date:
November 15, 1993
Export Citation:
Assignee:
株式会社日本自動車部品総合研究所
株式会社デンソー
株式会社デンソー
International Classes:
F02D1/04; F02D41/40; F02M41/12; F02M51/00; (IPC1-7): F02M41/12; F02M51/00
Domestic Patent References:
| JP583359U | ||||
| JP59137370U | ||||
| JP62146063U | ||||
| JP6199667U | ||||
| JP575952U | ||||
| JP61145838U |
Attorney, Agent or Firm:
Hironobu Onda