| 摘要 |
FIELD: motors and pumps.SUBSTANCE: method of fuel supply control is proposed, which consists in that the fuel pressure is formed by the high pressure fuel pump, the fuel is supplied to the high-pressure hydraulic accumulator (HPHA) and a certain pressure level is established therein using the high-pressure control valve. The fuel is supplied to each injector at the pressure set for all injectors from common HPHA, the fuel is supplied under the needle and to the camera above the needle, during injection the fuel from the camera above the needle is drained through the duct, which is open by the second mechanical valve. Due to the difference of pressures above and below the needle the needle lifted and fuel is injected, the second mechanical valve is closed. The first mechanical valve is opened, the fuel is supplied under high pressure to the camera above a needle, the needle is shifted to the seat due to high-pressure, effecting the needle from above. Using the proposed method it is possible to perform at least one preliminary injection, at least one main injection and at least one injection after the main one. Besides the device for implementation of the fuel supply control method is offered.EFFECT: improvement of precision of dosing of amount of injected fuel and optimisation of the fuel combustion process.2 cl, 5 dwg |
