Device for adjusting valve duration using external air supply

Details Device for adjusting valve duration using external air supply Device for adjusting valve duration using external air supply

1995-08-29

1997-09-09

Lo, Weilun

Internal-combustion engines

Poppet valve operating mechanism

Spring

123 9067, 123 9015, F01L 310, F01L 1300

Patent

active

056645317

ABSTRACT:
An improved device for adjusting a valve lift using external air supply, includes an operating chamber with a piston, and inner and outer valve spring seats with wax whereby in a low speed vehicle, when the engine oil has a high pressure, the heated air expands the wax and compresses a valve spring for adjusting the valve lift so as to effectively improve output power of the vehicle engine.

REFERENCES:
patent: 3094976 (1963-06-01), May
patent: 4446825 (1984-05-01), Giardini et al.
patent: 4559909 (1985-12-01), Honda et al.
patent: 4777916 (1988-10-01), Holmer

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