DEVICE FOR UNCOKING NOZZLE SPRAYERS Russian patent published in 1995 - IPC

FIELD: engine engineering. SUBSTANCE: device has plunger section of fuel pump with delivery valve, fuel pipe of high pressure, inlet and outlet branch pipes, stop and check valves mounted inside the inlet and outlet branch pipes respectively, reservoir filled with an additive, and booster pump. The attachment is made up as a housing provided with the mixing chamber having two inlets and two outlets connected with the fuel pipe line of high pressure through the outlet branch pipe. One of the inlets is connected with the plunger section of the fuel pump. The second inlet is connected to the reservoir through the inlet branch pipe. The check valve is provided with a throttle. The volume of the mixing chamber is no more than 8.0 of discharging volumes of the delivery valve of the fuel pump. The diameter of the throttle of the check valve is equal to 0.15-0.30 of the inner diameter of the fuel pipe line of high pressure. EFFECT: enhanced reliability. 1 dwg