Fluid sprinkling – spraying – and diffusing – Fluid pressure responsive discharge modifier* or flow... – Fuel injector or burner
Patent
1999-06-28
2000-12-05
Kashnikow, Andres
Fluid sprinkling, spraying, and diffusing
Fluid pressure responsive discharge modifier* or flow...
Fuel injector or burner
31031603, F02M 3900, F02M 4100, F02M 4300, F02M 4700, F02M 5500
Patent
active
061555002
ABSTRACT:
A piezoelectric actuator is disclosed, wherein a superposing pulse is generated just after a command pulse falls to thereby reduce oscillations of displacement in piezoelectric elements. In the piezoelectric actuator, an exciting pulse having a preselected pulse width is applied across terminals of the piezoelectric elements to cause strains in dimension for the piezoelectric elements. A pulse is superposed such that it is superposed at a timing a at which the exciting pulse is turned on, and then the exciting pulse is once turned off for a minute length of time, or an interval between b and b', and turned on again at c. The pulse to be superposed is supplied with a timing less than one-fourth a period of an oscillation of the piezoelectric elements. The piezoelectric actuator is effective to prevent the resonance phenomenon and preferably employed for the fuel-injection apparatus.
REFERENCES:
patent: 4641053 (1987-02-01), Takeda
patent: 4767959 (1988-08-01), Sakakibara et al.
patent: 5803361 (1998-09-01), Horiuchi et al.
Hwu Davis
Isuzu Motors Limited
Kashnikow Andres
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