Title:
燃料噴射装置
Document Type and Number:
Japanese Patent JP4372722
Kind Code:
B2
Abstract:
A fuel injection device wherein when the combined natural resonant period of a piezo stack and a driving member constituting part of a piezo injector of a fuel injection device is denoted by T, and the voltage rise time taken from the moment the charging to the piezo stack is initiated until the piezo stack is charged to a target charge voltage is denoted by t, then, in order to prevent oscillating loads from being applied to the piezo stack after elapse of the voltage rise time t when t<=0.5 T±0.1 T, the voltage rise time t that satisfies the relation 0.6T<=t is set in a controller for the piezo injector and, thus, the voltage rise slope of the piezo stack immediately before reaching the end of the voltage rise time t is made gentler to suppress the expansion and contraction force occurring in the piezo stack and thereby enhance the long-term reliability of the piezo stack.
Inventors:
Akira Fujii
Osamu Hishinuma
Arikawa civilization
Izumi Takahashi
Akira Kiyama
Osamu Hishinuma
Arikawa civilization
Izumi Takahashi
Akira Kiyama
Application Number:
JP2005166048A
Publication Date:
November 25, 2009
Filing Date:
June 06, 2005
Export Citation:
Assignee:
株式会社デンソー
トヨタ自動車株式会社
株式会社日本自動車部品総合研究所
トヨタ自動車株式会社
株式会社日本自動車部品総合研究所
International Classes:
F02M51/06; F02D41/20; F02M47/00; F02M61/20; H01L41/083; H01L41/09
Domestic Patent References:
| JP2005009481A | ||||
| JP4334075A | ||||
| JP11013583A | ||||
| JP2002136156A | ||||
| JP2002161788A |
Attorney, Agent or Firm:
Kenji Ishiguro