Internal-combustion engines – Poppet valve operating mechanism – Electrical system
Patent
1992-11-04
1993-08-24
Cross, E. Rollins
Internal-combustion engines
Poppet valve operating mechanism
Electrical system
123 9012, 123498, 123508, F01L 902, F02M 3704
Patent
active
052379680
ABSTRACT:
An apparatus adjustably controls intake and exhaust valve movement and fuel injection of an engine. Valve movement and injection is adjustably controlled in response to electrical signals delivered to a piezoelectric motor which in turn delivers hydraulic signals through a single spool valve.
REFERENCES:
patent: 4009695 (1977-03-01), Ule
patent: 4020803 (1977-05-01), Thuren et al.
patent: 4602604 (1986-07-01), Kauer
patent: 4699103 (1987-10-01), Tsukahara et al.
patent: 5057734 (1991-10-01), Tsuzuki et al.
Miller Charles R.
Shyu Tsu P.
Weber J. Roger
Caterpillar Inc.
Cross E. Rollins
Hart Frank L.
Lo Weilun
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