PUMP-NOZZLE ACTUATED UNDER ACTION OF GAS PRESSURE IN CYLINDER OF INTERNAL COMBUSTION ENGINE Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: pump-nozzle comprises housing, two-step plunger received in the housing, two delivery spaces, low-pressure passages, and high-pressure passages. A controller of injection advance, which is constructed as an electromagnet, is received in a cover. The electromagnet interacts with a magnet insert which is coupled with a plunger through a rod. Fuel enters the delivery space through check valve and nozzle. In compression stroke in engine cylinder, when the electromagnet is disconnected, plunger displaces (injects) gas-fuel mixture to the engine cylinder through a passage under the action of compressed gases. EFFECT: improved design. 5 cl, 5 dwg