Title:
ガス交換弁を制御するための装置
Document Type and Number:
Japanese Patent JP2005500463
Kind Code:
A
Abstract:
An apparatus for controlling gas exchange valves of an internal combustion engine is disclosed, which have hydraulic valve actuators (11) each assigned to one gas exchange valve, with one adjusting piston (13) acting on the gas exchange valve and two hydraulic work chambers (121, 122) defined by the adjusting piston (13), of which chambers the first work chamber (121), acting on the gas exchange valve (10) in the closing direction, is constantly filled with fluid that is under pressure, and the second work chamber (122), acting on the gas exchange valve (10) in the opening direction, can be filled with and relieved of fluid that is under pressure in alternation via a first and second electrical control valve (24, 25; 26, 27). To reduce the cost, the second control valves, which are preferably combined into a valve unit (40), for one pair of valve actuators (11), which actuate two gas exchange valves used as inlet or outlet valves of a combustion cylinder, are triggered by a common electrical control signal
Inventors:
Hermann Gessler
Hubert Schweigard
Bernd Rosenau
Ralph Engelberg
Hubert Schweigard
Bernd Rosenau
Ralph Engelberg
Application Number:
JP2003523803A
Publication Date:
January 06, 2005
Filing Date:
June 08, 2002
Export Citation:
Assignee:
ROBERT BOSCH GMBH
International Classes:
F01L9/10; (IPC1-7): F01L9/02
Attorney, Agent or Firm:
Toshio Yano
Einzel Felix-Reinhard
Reinhard Einsel
Einzel Felix-Reinhard
Reinhard Einsel