Fuel injection systems

Details Fuel injection systems Fuel injection systems

G - Physics

05

D

341/38.12

G05D 7/06 (2006.01) F02D 41/32 (2006.01)

Patent

CA 1069202

ABSTRACT OF THE DISCLOSURE An electronic drive signal distribution arrangement for use in an ultrasonic fuel supply system for an internal combustion engine in which the engine produces control pulses dependent upon engine operating conditions wherein a plurality of piezo-electric transducers are each coupled to a fuel injection nozzle for the engine, an oscillator produces an ultrasonic signal for driving the transducers with a triac associated with each transducer. The triacs are connected with the oscillator so that opto- coupler means controls conduction of the triacs and feeding signal bursts from the oscillator to the respective transducer in dependence upon the control pulses. A capacitor shunts each particular transducer so that the capacitance presented to each triac is substantially the same. A opto- coupler means is exemplified as an input photo diode optically coupled to an output photo transistor with a coupling transistor connecting the output photo transistor to its associated triac.

261456

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