To internal combustion engines with variable valve actuation

Details To internal combustion engines with variable valve actuation To internal combustion engines with variable valve actuation

1999-01-22

2000-04-25

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

123 9012, F01L 1300, F01L 146

Patent

active

060531363

ABSTRACT:
A variable valve actuating system for an internal combustion engine includes an auxiliary pressure accumulator having a one-way type of operation, provided with pawl-like stop means to hold a piston at a position reached due to an increase of pressure within the chamber of the accumulators, against the action of return spring means. When the engine is started, the stop means are deactivated.

REFERENCES:
patent: 4671221 (1987-06-01), Geringer et al.
patent: 4674451 (1987-06-01), Rembold et al.
patent: 4930465 (1990-06-01), Wakeman et al.
patent: 5127375 (1992-07-01), Bowman et al.
patent: 5263441 (1993-11-01), Rembold et al.
patent: 5694893 (1997-12-01), Chan et al.
patent: 5746175 (1998-05-01), Hu
patent: 5839400 (1998-11-01), Vattaneo et al.

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