| 摘要 |
FIELD: engines and pumps.SUBSTANCE: device for fuel supply control includes a nozzle with two levels of holes with a spring-loaded needle and a bushing coaxial to the needle. The needle and the bushing are connected to each other kinematically. The device is equipped with an individual fuel pump for every nozzle with a drive from a cam shaft, connected kinematically with a crankshaft via a roller with a yoke, a common hydraulic accumulator of low pressure, the first and second control mechanical valves with steams with conical or other sealing surface for each nozzle, a quick-acting reversible mechanical drive for each nozzle, a common valve of high pressure control for each nozzle, the needle is made with kinematic connection to the bushing and as capable of displacement on top of the bushing together with the needle as a result of needle displacement in the upper part of movement when moving upwards, the needle is connected mechanically with the stem of the first mechanical valve with the sealing surface, closing a channel that connects the individual high-pressure fuel pump with chambers under the needle and the bushing, and is also connected with the stem of the second mechanical valve with the sealing surface closing the channel that connects the common chamber above the needle and the bushing with the low pressure hydraulic accumulator during cutoff, the nozzle needle is connected mechanically via a movement multiplier, or directly with the quick-acting reversible mechanical drive for its linear displacement, which is equipped with at least one plate kinematically connected to the needle.EFFECT: invention improves dynamics of fuel supply, increases indicator efficiency factor, realises multi-injection and time-controlled injections by means of simple mechanical devices.2 cl, 4 dwg |
