Title:
内燃機関内の排気弁の液圧作動装置
Document Type and Number:
Japanese Patent JP3564074
Kind Code:
B2
Abstract:
PURPOSE: A hydraulic-operated device of an exhaust valve is provided to accurately control a valve and avoid the problems in that very large load is applied to both a valve actuator and a hydraulic component so that a specified component rapidly wears away in an undesirable degree. CONSTITUTION: A hydraulic-operated device of an exhaust valve in an internal combustion engine comprises a valve pump(8) having a pressure chamber(30), and in the pressure chamber, a port(29) is selectively connected to a high pressure supply source for hydraulic fluid or a return pipe through a control valve. A service piston in the valve pump separates the pressure chamber from a hydraulic volume part communicating with a pressure chamber in a hydraulic actuator to a main shaft of the exhaust valve through a pressure conduit(6). A second service piston limits a flow of hydraulic fluid from the port to the pressure chamber at the start position.
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Inventors:
Henning Lindkist
Application Number:
JP2001037984A
Publication Date:
September 08, 2004
Filing Date:
February 15, 2001
Export Citation:
Assignee:
Man B&W Diesel A/S
International Classes:
F01L9/02; (IPC1-7): F01L9/02
Domestic Patent References:
| JP2000045732A | ||||
| JP4017704A | ||||
| JP9100706A |
Attorney, Agent or Firm:
Kazuo Shamoto
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita
Masatoshi Yasuse
Shosuke Imai
Tadashi Masui
Yasushi Kobayashi
Hiroyuki Tomita
Masatoshi Yasuse