Temperature compensated stack of piezoelectric elements
US4570098A · kind A · utility
48Cited by
11References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 18, 1984 |
| Grant date | Feb 11, 1986 |
| Priority date | — |
| Expiry date | Jun 18, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2200/21
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A piezoelectric transducer comprising a lamination of piezoelectric elements including one or more elements in which the distortion has a positive temperature dependency and one or more elements in which the distortion has a negative temperature dependency. By selecting the ratio of the number of the piezoelectric elements having the positive and negative temperature dependencies, the temperature dependency of the distortion of a transducer can be eliminated. An actuator for injecting fuel into an automobile at a high speed and delicate response to external operation is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.