HYDRAULIC LOCK NOZZLE (VERSIONS) Russian patent published in 2003 - IPC

FIELD: mechanical engineering; diesel engines. SUBSTANCE: proposed diesel engine nozzle with stabilized residual pressure contains body with channels to feed fuel and nozzle orifices, and needle with differential flat. Rectangular or segment complete groove is made on side guide surface of spray tip needle parallel to its axis. According to other design version, incomplete groove is made on side guide surface of spray tip needle parallel to its axis. Invention makes it possible to stabilized residual pressure at sequential injection cycles without impairing serviceability of spray tip. EFFECT: improved performance characteristic of fuel equipment. 3 cl, 3 dwg