LUBRICATION SYSTEM OF INTERNAL COMBUSTION ENGINE Russian patent published in 2006 - IPC F01M1/10 

FIELD: mechanical engineering; internal; combustion engines.

SUBSTANCE: lubrication system of internal combustion engine contains tank for circulating oil, main pump connected by input with said tank and by output, through temperature regulator and oil cooler, with self-cleaning filter whose output is connected with main oil line, additional pump with electric drive, output of additional pump is connected with centrifugal filters whose outputs communicate with circulating oil tank, and check valves. System is furnished also with oil temperature and oil pressure relay unit installed on main oil line, ejector installed at input of additional pump. First check valve is connected in parallel with additional pump, input of second check valve communicates with circulation oil tank, and output of second check valve is connected with one of inputs of ejector whose other input is connected with contaminants drain line from self-cleaning filter. Outputs of oil temperature and oil pressure relays unit are connected to control inputs of electric drive of additional pump. Main and additional pumps contain bypass valves installed between input and output of each pump. Centrifugal filters are provided with backup valves installed at input of each filter.

EFFECT: improved efficiency of cleaning of engine oil and reconditioning of filtering elements.

2 cl, 1 dwg