SU1300181A1

SU1300181A1 - Fuel-metering device for internal combustion engine

Info

Publication number: SU1300181A1
Application number: SU853972262A
Authority: SU
Inventors: Владимир Александрович Гутман; Владимир Николаевич Долинин; Александр Диамидович Костин; Николай Дмитриевич Ходунов
Original assignee: Центральный научно-исследовательский дизельный институт
Priority date: 1985-10-29
Filing date: 1985-10-29
Publication date: 1987-03-30

Abstract

Изобретение относитс к двигате- лестроешпо и м.б. использовано в топливной системе быстроходного дизел . Цель изобретени - снижение затрат мощности на привод топливного насо--| са. Толкатель 7 выполнен из немагнитного металла и размещен с противоположной от кор 6 стороны залотника The invention relates to engine and m. used in the fuel system of high-speed diesel. The purpose of the invention is to reduce the cost of power to drive the fuel pump-- | sa The pusher 7 is made of a non-magnetic metal and is placed on the opposite side of the core 6 zatlotnika

Description

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относитс к двигатес йа 16 на то ст осrelates to engine 16

лестроению, а именно к топлнв}1ым системам с электроуправл емым впрыском, ч может быть использовано в качестве тoпливoдoзиpyюE eгo устройства в топливной системе быстроходного дизел .building, namely to the top} 1m systems with electrically controlled injection, h can be used as a fueling device of his device in the fuel system of high-speed diesel.

Цель изобретени - снижение затрат мощности на привод топливного насоса ггутем снижени утечек топлива в золотнике вследствие увеличени перекрыти его рабочих кромок при сохранении мощности переключающего электромагнита.The purpose of the invention is to reduce the power cost of driving the fuel pump to reduce the leakage of fuel in the spool by increasing the overlap of its working edges while maintaining the power of the switching electromagnet.

На чертеже представлена конструктивна схема топливодозирующего устройства .The drawing shows a constructive scheme of the toplivrosi device.

Устройство содержит корпус 1, втуку 2, электромагнит 3 и нагруженньш пружиной 4 золотник 5 с корем 6, установленный во втулке 2. Золотник 5 снабжен толкателем 7, выполненным из немагнитного металла, например из меди, размещенным с противоположной от кор 6 стороны золотника 5, и индуктором 8 импульсного магнитного пол , установленным в корпусе 1 соос но золотнику 5 со стороны толкател 7, На золотнике 5 выполнены проточка 9, образующа рабочую кромку 10, и проточка 11, образующа рабочую кромку 2. Во втулке 2 выполнена канавка 13, образующа рабочие кромки 14 и 15, а также подводной 16, нагнётаThe device comprises a housing 1, a plug 2, an electromagnet 3 and a spring loaded 4 with a spool 5 with core 6 mounted in sleeve 2. The spool 5 is equipped with a push rod 7 made of a nonmagnetic metal, for example copper, placed on the side of the spool 5 opposite to core 6, and an inductor 8 of a pulsed magnetic field installed in the housing 1 coaxially to the spool 5 on the side of the pusher 7; On the spool 5 there is a groove 9 forming the working edge 10 and a groove 11 forming the working edge 2. In the sleeve 2 there is a groove 13 forming the workers kro mk 14 and 15, as well as underwater 16, pump

тeлыiый 17 и отводной 18 каналы. Меж-35 перекрытие S без снижени быстродей- ду рабочими кромками 10 и 14 золотни- стви и тем самым значительно умень- ка 5 и канавки 13 втулки 2 образова- шить протечку топлива по прецизионной но уплотн ющее перекрытие S, а между корем 6 и электромагнитом 3 образо ван зазор 5 . При этом перекрытие S 0 меньще зазора S на величину открыти золотника 5.body 17 and side channels 18. Inter-35 overlap S without reducing the speed of the working edges 10 and 14 of the gold and thereby significantly reducing 5 and the grooves 13 of the sleeve 2 to form a fuel leak on a precision but sealing overlap S, and 3 image van gap 5. In this case, the overlap S 0 is smaller than the gap S by the amount of opening of the spool 5.

Устройство работает следующим образ ом сThe device works as follows

Подают импульс тока на обмотку ин- 45 дуктора 8, в результате чего возниктп шее импульсное магнитное поле индуцирует в толкателе 7 вихревые токи, которые, вступа в электромеханическое взаимодействие с магнитным пото- 50A current pulse is applied to the winding of the inductor 8, as a result of which a pulsed magnetic field arises in the push rod 7, eddy currents induce electromechanical interaction with the magnetic flux.

части золотника, что дает возможность снизить мощность привода топливного насоса и, как следствие, повысить эффективность КПД двигател .parts of the spool, which makes it possible to reduce the drive power of the fuel pump and, consequently, improve the efficiency of the engine.

Claims

Invention Formula

A fuel dispenser for an internal combustion engine comprising a housing, a sleeve, an electromagnet and a spring-loaded spool with a bark mounted in a sleeve, characterized in that, in order to reduce the power required for driving the fuel pump, the spool is provided with a pusher made of a non-magnetic metal placed 55 seconds opposite to the core of the side of the spool, and the inductor of a pulsed magnetic field, installed in coaxial direction with the side of the spool.

com inductor 8, discard the pusher 7 from the inductor 8 (in the drawing to the left). Together with the pusher, the valve and the valve 5 move to the left. After a certain distance, the valve 5 enters the zone of the electromagnetic floor of the electromagnet 3, which attracts the valve 5 together

five

0

five

with core 6. Finally, the spool 5 lowers the operating position when the channel 16 through the bore 9 communicates with the discharge channel 17. At the same time, the fuel from the pressure accumulator goes to the nozzle (not shown), and is injected.

After fuel injection, the power supply of the electromagnet 3 is interrupted and the spring 4 returns the valve 5 to its original position (in the drawing - the extreme right). In this case, the cylindrical part of the spool 5 between the grooves 9 and 11 separates the channels 16 and 17. The cycle ends.

Between fuel injections, the separation of channels 16 and I 7 is ensured by an increased amount of overlap S between the working edges W and 1, and a small amount of leaked fuel is discharged through channel 16, which in the initial position of the spool 5 is connected through groove 11 to groove 13. When injection is performed (in the drawing, the leftmost position of the spool 5), the working edges 12 and 15, respectively, of the spool 5 and sleeve 2 form a sealing overlap preventing leakage into the channel 18.

The possibility of preliminary accelerating movement of the spool due to the action of an inductor pulsed mapped field in the proposed device allows to significantly increase

overlapping S without reducing the speed and thereby significantly reducing the leakage of fuel by precision

parts of the spool, which makes it possible to reduce the drive power of the fuel pump and, consequently, improve the efficiency of the engine.

Invention Formula

A fuel dispenser for an internal combustion engine comprising a housing, a sleeve, an electromagnet and a spring-loaded spool with a bark mounted in the sleeve, characterized in that, in order to reduce the power required for driving the fuel pump, the spool is provided with a push rod made of a non-magnetic metal placed opposite from the core of the side of the spool, and by the inductor of a pulsed magnetic field, installed coaxially with the spool on the side of the pusher.