| 摘要 |
FIELD: test equipment.SUBSTANCE: invention relates to methods of evaluation of tendency of motor petrol to formation of deposits on injectors of internal combustion engines. According to the proposed method, pumping of tested petrol through heated to temperature of 180±3°C injector for not more than four days, in each day of which during 18 hours fuel is injected through heated injector for 0.2 s, with an interval between the injections of 300 s, and for the following 6 hours these days, with heating, injector is kept in idle state. At the end of testing fixed colour bottom surface of the injector, which is compared with colour scale, and tendency of tested fuel to formation of deposits is appraised by points, at that each day after faults injector additionally evaluated tightness its shut-off needle, if which gasoline is considered defective.EFFECT: reduction of duration and higher accuracy of tests.1 cl, 1 tbl, 2 dwg |
