发明名称 |
Lost motion full authority valve actuation system |
摘要 |
A lost motion variable valve actuation system utilizing a single solenoid valve or trigger valve to vary the timing of the intake and exhaust valves for a cylinder of an internal combustion engine. The solenoid controls the oil supply to the tappets, which in turn, determine valve motion in response to a camshaft lobe The system allows independent control of each valve and provides for advanced features such as enhanced intake air swirl, two-valve or four-valve operation and staggered valve opening. The invention provides for valve operation even in the event of a total loss of system hydraulic pressure. The invention provides the practical benefits of a fully-variable system while preserving the security and reliability of a mechanical, cam-driven valve train. The invention provides for filling the exhaust and intake tappets independently without connecting their respective hydraulic circuits.
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申请公布号 |
US6257183(B1) |
申请公布日期 |
2001.07.10 |
申请号 |
US19980185585 |
申请日期 |
1998.11.04 |
申请人 |
DIESEL ENGINE RETARDERS, INC. |
发明人 |
VORIH JOSEPH M.;ISRAEL MARK A. |
分类号 |
F01L9/02;F01L13/00;(IPC1-7):F01L9/02 |
主分类号 |
F01L9/02 |
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