Pulsed jet combustion generator for premixed charge engines

Apparatus for generating pulsed jets comprising combustion initiating high temperature combustion products containing an appreciable amount of active radicals, for injection into compressed premixed fuel-air charges of internal combustion engines during an appropriate time interval close to the end of the compression stroke, for initiating and controlling combustion of said compressed premixed fuel-air mixture, which comprises:

• a body defining an interior chamber, said chamber including a terminal section defining at least one orifice for forming said jet, said body being capable of being secured to said internal combustion engine in fluid communication with the head space of a cylinder of said engine to direct said jet into said head space;
• a hollow electrically conductive tube secured to said body in electrically insulated relationship thereto, one first end of said hollow electrode projecting into said interior chamber, said first end being closed and defining a plurality of spray perforations between the interior of said tube and said chamber, said hollow, electrically conductive tube having a second end capable of being connected to a supply of pressurized fuel in an electrically non-conductive relationship with said body, and said hollow, electrically conductive tube being capable of being connected to source of electrical energy sufficient to cause an electrical discharge across said chamber for ignition.