Bi-directional power electronics circuit for...

Details Bi-directional power electronics circuit for... Bi-directional power electronics circuit for...

2006-05-02

2006-05-02

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

Electrical system

C251S129150, C361S160000

Reexamination Certificate

active

07036469

ABSTRACT:
A bi-directional dual coil half bridge converter adapted to be coupled to a dual coil actuator of a cylinder valve in an internal combustion engine is described. In one example, the converter has a first and second capacitor and a voltage source, where the converter is actuated via switches to individually energizing coils in said dual coil actuator. A voltage regulator is also shown for maintaining midpoint voltage during unequal loading of different actuator coils in the converter.

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U.S. Appl. No. 10/873,713, filed Jun. 21, 2004, Degner et al.
U.S. Appl. No. 10/804,667, filed Mar. 18, 2004, Degner et al.
U.S. Appl. No. 10/804,675, filed Mar. 18, 2004, Degner et al.

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