SU237487A1 - MOTOR PUMP ROTARY PUMP - Google Patents

Description

Rotary fuel pumps for a multi-cylinder internal combustion engine are known, comprising a housing with cam washers and injection nozzles and a rotor provided with plunger plugs installed in radial openings with pushers interacting with the washers.

The proposed pump is distinguished from the fact that the plungers with bore holes are made in the form of isna-bore and circumferentially displaced rotor of the injection elements, each of which is connected to the discharge nipples of half the engine cylinders. This embodiment of the pump provides injection with an equal half-face and an evenly alternating working stroke.

Pa figs. 1 shows a predol; rotary fuel injection pump for a eight-cylinder eight-cylinder twin, section, FIG. 2 variant of the proposed pump for V-type (; six-lipdrovogo engine with uneven alternation of working strokes, section.

Pazos consists of a housing / (see Fig. 1), a rotor 2, plungers 3, roller pushers 4, cam washers 5 and 6 with internal projections 7 and 6. In the thickened part of the rotor, two diametrically orifices 9 are made perpendicular to the axis of its rotor. and 10, displaced along the length of the rotor, in which m are located along the plunger 3, and at the outer KoiiiLOii O; .

Plungers outer. M. Ends of unirayugs 3 pushers. Ylkatelp two ilunzherov located in the hole 1 / rotor, covered with a cam Shayooi with internal III. The profiles of the protrusions on the heads are the same, and the washers are rationalized, so that the projections of one of them are rasio.yuzheny in nromezutki on circumference; 1 between each other.

One pair of plungers in the hole 9 1 or W with a thumb wheel, cam jaw 6 or 6 and fuel channels inside the rotor is a self-supporting iiacoca pressure element hydraulically isolated from the same pressure element. Vnusknye holes 12 obop of the capsizing elements are located in one section, peria; 1, the rotary axis of the rotor, and when rotating, alternately aligned with the pickup window 13 in the rotor sleeve 14, common to both injection elements, resulting in filling the melchplunger space with fuel during the divergence of the plungers.

The discharge openings 15 in the rotor are located in two sections displaced along the length of the rotor, separate for each pumping element of the pump. When the rotor rotates, the injection openings 15 are aligned with the openings 16 connected to the injection nozzles (not shown in the drawing). During the period of convergence of the plungers. The injection of fuel is distributed among the cylinders of the engine.

In addition to the plunger: B, pushers and cam washers, the remaining elements of such a two-piece pump are: a metering device, an engine speed regulator, an automatic injection advance pump, a booster pump and a drillae. are common to both blowers. the pump.

A rotary fuel pump for six-cylinder engines with uneven alternation of working strokes differs from that described (Above that each pump element has three plungers located at an angle of 120 °, and each cam disc has three projections located at an angle of 120 °.

The protrusions of one washer are circumferentially offset relative to the protrusions of the other at an angle,

necessary for the alternation of working strokes. In particular, for a V-shaped six-cylinder engine with an angle between the cylinders 90, the angle between the protrusions of the 1 adjacent Iabe is 45 °.

Due to the implementation of a pump with two injection elements, each of which is connected to the engine fittings of half the engine cylinders, fuel is injected into engines with a number of cylinders ranging from six to twelve and engines with uneven alternation of working strokes.

Subject invention

A rotary injection pump for a multi-cylinder internal combustion engine, comprising a housing with cam washers and injector nozzles and a rotor equipped with radar holes or mn with push rods interacting with the washers, characterized in that and unequal. dimensional alternation of workers

passages, pluisers with holes are made in the form of insulated and s. circumferentially centered rotor axis of the injection elements, each of which is connected to the pressure connections of half of the engine cylinders.

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155 T 10 L / /

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FIG. 2