Three-way valves and fuel injectors using the same

摘要: Three-way valves having reduced leakage and fuel injectors using the same. spool poppet are disclosed a with valve thereon cooperating seat on housing to provide substantially leak free closing in one direction characteristic of while preserving advantages valve. ball also both directions, but further including short circuit losses due direct flow from high pressure source low vent during transition position opposite position. Fuel needle control three-way present invention disclosed.