SYSTEM OF AUTOMATIC FUEL INJECTION PRESSURE CONTROL DEPENDING ON DIESEL OPERATION MODES Russian patent published in 2009 - IPC F02D41/38 F02M45/00 

FIELD: engine engineering.

SUBSTANCE: invention relates to engine engineering, particularly to high pressure fuel supply systems equipped with systems controlling fuel injection pressure in locomotive diesel cylinders. Automatic fuel injection pressure control system depending on diesel operation modes is provided with pneumatic filling up injectors connected to the common locomotive air main-line through the by-pass pipeline and standard electro-pneumatic valve coupled with switching contacts of locomotive driver controller. The system is provided with three by-pass pipelines connected to the pneumatic filling-up injectors and common locomotive air main-line. Pneumatic gear boxes and electric pneumatic valves are installed in each by-pass pipeline. They are coupled with a plus side of power supply terminal through the reverse and direct auxiliary contacts of a standard electromagnetic contactor switch. Two pairs of additional contacts are also available in the by-pass pipelines, which control electro-pneumatic valves operation. The above mentioned electro-magnetic valves are cinematically connected with two additional edge cams being rigidly installed on a driven rod of locomotive driver controller.

EFFECT: wide range of injection pressure control and fuel injection pressure changing in not only idle mode, but also at partial diesel loads.

2 dwg