Title:
【発明の名称】内燃機関用油圧アクチュエータ
Document Type and Number:
Japanese Patent JPH11511828
Kind Code:
A
Abstract:
A camless intake/exhaust valve for an internal combustion engine that is controlled by a solenoid actuated fluid control valve. The control valve has a pair of solenoids that move a spool. Energizing one solenoid moves the spool and valve into an open position. The valve spool is maintained in the open position by the residual magnetism of the steel valve housing and spool even when power is no longer provided to the solenoid. Energizing the other solenoid moves the spool and valve to a closed position without providing a de-magnetizing force to the first solenoid. The solenoids are digitally latched by short digital pulses provided by a microcontroller. The valve is therefore opened by providing a digital pulse of a short duration to one of the solenoids and closed by a digital pulse that is provided to the other solenoid.
Inventors:
Starman, Oded Yi
Application Number:
JP53486796A
Publication Date:
October 12, 1999
Filing Date:
May 02, 1996
Export Citation:
Assignee:
Starman Industries Incorporated
International Classes:
F01L9/10; F01L9/20; F02D13/02; F02M57/02; F02M59/10; (IPC1-7): F01L9/02; F01L9/04; F02D13/02
Attorney, Agent or Firm:
Masaki Yamakawa (5 outside)