METHOD OF FUEL FEED CONTROL AND DEVICE TO THIS END Russian patent published in 2014 - IPC F02M61/18 F02M47/02 

FIELD: engines and pumps.

SUBSTANCE: invention relates to fuel feed control in large stationary and mobile diesel power plants used at ships, locomotive, and other transport facilities and in earthworks. Proposed device comprises atomiser with spring loaded shutoff element, sprinkler with one level of orifices, high-pressure fuel feed channel, high-pressure fuel pump, fuel tank and priming pump, all being hydraulically communicated. Note here that it incorporates at least one high-pressure hydro-storage with outlet communicated with said atomiser. Said hydro-storage is equipped with, at least one plate for one cylinder with convex surface at one end of said plate, define length of said convex part having an invariable radius. Besides, it has the shaft articulated with crankshaft with at least one program shaped cam with at least one microprofile of invariable preset height, preset length over cam circumference and along crankshaft axis for injection. Or, at least, one variable-height microprofile varying by preset law one injection microprofile length. Said program shaped crankshaft cams for injection control can interact, first, with plate straight section at its displacement from one extreme position to another one and, then, with plate convex section at preset-duration injection. Convex surface of at least one plate features invariable length over cam circumference at no control over injection duration with straight leading edge and trailing edges of micro profiles parallel with shaft axis. Or with variable length with skew of plate convex end part with straight leading edges of micro profiles and skewed trailing edges of micro profiles parallel with skew of plate end convex or stepped section with straight leading and trailing edges parallel with the shaft axis. Or stepped length with straight leading and trailing edges parallel with the shaft axis. At injection duration adjustment every plate can displace along rod and needle axes and is engaged either directly or via multiplexer with spring-loaded rod and, via the latter, with atomiser needle. Every plate can displace in the plane perpendicular or inclined to needle and stem axes and is splined to stem relative to which displaces the plate.

EFFECT: better dynamics of fuel feed, higher indicated efficiency and controlled injection using simple mechanical means.

4 cl, 6 dwg