Injecting lubricating oil into internal combustion engine cylinder involves storing oil in chamber between non-return valve and dosing valve until pressure in chamber exceeds opening pressure

摘要

The method involves operating a pump at regular intervals to feed a dosed sub-quantity of oil in a lubrication line. Oil is transported via a non-return valve from the pump into a chamber between the non-return valve and a nozzle valve, where it is stored under increasing pressure while the pump is pumping. The stored quantity is released by being sprayed by the nozzle valve when the pressure in the chamber exceeds a nozzle valve opening pressure. The method involves operating a pump (6) at regular time intervals to feed a dosed sub-quantity of lubricating oil in a lubrication line (4) between a pump outlet and a nozzle valve (3) that opens to spray oil into the cylinder (1) when the pressure in the line exceeds a defined opening pressure. The nozzle valve closes at a pressure lower than the opening pressure, the oil is transported via a non-return valve (5) from the pump into a chamber (15) between the non-return and nozzle valves, where it is stored under increasing pressure while the pump is pumping and the stored quantity is released by being sprayed by the nozzle valve as soon as the pressure in the chamber exceeds the opening pressure.