FIELD: engines and pumps.
SUBSTANCE: invention is related to devices for ignition of fuel mixture in internal combustion engines and may be used in production of engines with forced ignition. Laser-spark igniter plug of internal combustion engine includes laser module and pumping oscillator. Laser-spark igniter plug is arranged in the form of detachable unit. Pump oscillator is installed in upper part of laser-spark igniter plug body. Pump oscillator includes four serially connected cascades: stabilizing, control, setting and outlet. Outlet cascade of pump oscillator is connected via electric socket to laser module. Laser module is installed in medium part of laser-spark igniter plug body. Between outlet window of laser module and focusing light guide, filter is installed. Filter protects laser module against fuel mixture radiation. Pump oscillator may be equipped with elements for variation of laser heating power value. Elements of laser heating power value variation consist of power setting relay and voltage divider in circuit of setting cascade transistor base. Relay contacts are connected parallel to one of voltage divider resistors. Leads of working winding of relay are electrically connected to inlet socket of laser-spark igniter plug. Indicator light diode may be installed on body of laser-spark igniter plug. Indicator light diode lights up after start-up of laser heating.
EFFECT: higher reliability of engine operation, simplified plug design and expansion of engine operation range at different alternative types of motor fuel.
3 cl, 3 dwg
