Title:
電磁弁駆動回路
Document Type and Number:
Japanese Patent JP4118432
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To improve responsibility of a solenoid valve at the time of breaking an electric current to a solenoid coil. SOLUTION: A control circuit IC101, a rush current supply circuit 110, a holding current supply circuit 130 and an electrifying circuit 140 apply charging voltage of a condenser 116 or battery voltage VB to a solenoid coil 42 in response to a driving signal to drive a solenoid valve and flow a driving electric current in a specified direction to the solenoid coil 42 in a solenoid valve driving circuit 100. A condensing circuit 180 condenses energy in the coil 42 in a condenser 182 when the solenoid coil 42 comes to be in a non-working state. A backward current supply circuit 150 applies charging voltage of the condenser 182 to the solenoid coil 42 at the time when the driving signal of the solenoid valve 36 becomes off and flows an electric current to the solenoid coil 42 in the opposite direction of the normal driving electric current.
Inventors:
Shigeru Enomoto
Yoshifumi Kadani
Yasuhiro Takeuchi
Yoshifumi Kadani
Yasuhiro Takeuchi
Application Number:
JP1045599A
Publication Date:
July 16, 2008
Filing Date:
January 19, 1999
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:
F02D41/20; F02M41/12; F02M45/06; F02M51/00; F02M51/06; F16K31/06
Domestic Patent References:
| JP10018888A | ||||
| JP8246931A | ||||
| JP9273442A | ||||
| JP10047140A | ||||
| JP9209807A |
Attorney, Agent or Firm:
Hironobu Onda