METHOD TO CONTROL FUEL SUPPLY AND DEVICE TO CONTROL FUEL SUPPLY Russian patent published in 2013 - IPC F02M47/02 

FIELD: machine building.

SUBSTANCE: device for fuel supply control comprises 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, equipped with an individual fuel pump for each 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, a control mechanical valve with a stem with a conical or another locking surface for each nozzle, a quick-acting reversible mechanical drive, a control valve of high pressure, the needle is made with a kinematic link with the bushing and is capable of movement upwards the bushing together with the needle as a result of needle displacement in the upper part of displacement, the needle is connected mechanically with the stem of the mechanical valve with the conical locking surface, closing the channel that connects the common chamber above the needle and the bushing with a hydraulic accumulator of low pressure at cut-off, the needle of the nozzle 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 with the needle, for its cylinder with the convex surface of permanent radius at one end of certain length of the convex part with at least one slant on it, a cam shaft connected kinematically with the crankshaft with at least one programmable profiled cam on it, with at least one microprofile on each cam with the permanent specified low height for realisation of preliminary injection, at least one microprofile with larger eight for realisation of the main injection or at least one microprofile of alternating height varying according to the specified law along the length of the microprofile for realisation of the main injection with at least one microprofile for realisation of injection after the main one with height equal or more than the microprofile height for realisation of preliminary injection. Each plate with at least one slant is made as capable of movement along the axis of the stem and the needle.

EFFECT: invention improves dynamics of fuel supply, increases indicator efficiency factor, realises multi-injection and duration-controlled injections by means of simple mechanical devices.

2 cl, 4 dwg