BED FOR TESTING INTERNAL COMBUSTION ENGINES Russian patent published in 1995 - IPC

FIELD: engine production. SUBSTANCE: bed has constant current machine 2 which has shaft to be connected with shaft of the engine, three-position switch 3 which has central terminal connected with collector of electric machine 2. Diodes 4 and 5 are connected with end terminals of the switch; diodes are connected in opposition. The other output wires of the diodes are connected with converter 6 which provides difference in current direction. Starting rheostat 9 is brought into the circuit of armature of electric machine 2 in series with the collector; the rheostat is shunted by switch 10. Converter 6 is made to serve several beds and connected directly with industrial network 8. EFFECT: improved efficiency; improved reliability. 1 dwg