TUNED POWER AMPLIFIER WITH MULTIPLE LOADED CHOKES FOR INDUCTIVELY HEATED FUEL INJECTORS

摘要

A tuned power amplifier includes: a tuning capacitor connected in series with multiple loaded chokes that represent an inductance of an oscillator, and multiple semiconductor power switches connected to the series connections between the tuning capacitor and the loaded chokes. The loaded chokes may be induction heating coils of inductively heated fuel injectors. The induction heating coils may be connected to a common voltage source. An on state and an off state of the semiconductor power switches may be synchronized with, or at a frequency below, a natural resonant frequency of the tuned power amplifier.

主权项

1. A tuned power amplifier comprising:
a tuning capacitor connected, in series, at a plurality of series connections, with a corresponding plurality of loaded chokes, wherein the plurality of loaded chokes are configured to represent an inductance of an oscillator; a plurality of semiconductor power switches connected to the plurality of series connections between the tuning capacitor and the corresponding plurality of loaded chokes.