Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent
1985-05-06
1987-02-17
Budd, Mark O.
Electrical generator or motor structure
Non-dynamoelectric
Piezoelectric elements and devices
310316, H01L 4108
Patent
active
046442120
ABSTRACT:
A piezoelectric element driving device applicable to an actuator portion of a fuel injection valve for an internal combustion engine, including a first switching unit, operating to generate a first set voltage in response to a first signal transmitted at predetermined intervals, and a second switching element, operating to generate a second set voltage in response to a second signal transmitted after a predetermined period of time upon completion of the operation of the first switching element. There are provided a unit for regulating the first and second set voltages by means of rectifying devices arranged between the first and second switching elements and a piezoelectric element, and a resonance coil connected between connecting points of the first and second switching elements and the rectifying devices.
REFERENCES:
patent: 3921015 (1975-11-01), Obeda et al.
patent: 3995813 (1976-12-01), Bart et al.
patent: 4022166 (1977-05-01), Bart
patent: 4044297 (1977-08-01), Nobue
patent: 4237399 (1980-12-01), Sakamoto
patent: 4258282 (1981-03-01), Rijkaert
patent: 4471256 (1984-09-01), Igashira et al.
patent: 4507762 (1985-03-01), Meyer et al.
Kawai Hisasi
Moritugu Mitiyasu
Tokura Norihito
Budd Mark O.
Nippon Soken Inc.
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