Variable valve lift apparatus

Details Variable valve lift apparatus Variable valve lift apparatus

2008-09-09

2008-09-09

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Rocker

C123S090120, C123S090440, C123S090450, C074S569000

Reexamination Certificate

active

11648248

ABSTRACT:
A variable valve lift apparatus is provided comprising: an arm; a valve and valve springs connected to a first end of the arm for controlling an air intake and an air exhaust; a driving plunger disposed in a driving plunger groove formed on a second end of the arm which is opposite to the first end; a driving plunger portion elastic member disposed in the driving plunger groove for biasing the driving plunger; a support coupled to a cylinder head for supporting the driving plunger; a locking unit for selectively fixing the driving plunger; and a hydraulic pressure supply unit for selectively supplying hydraulic pressure to the locking unit.

REFERENCES:
patent: 2053743 (1936-09-01), Russell

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