US1027054A - Atomizer for liquid-fuel motors. - Google Patents

Description

l J LEFLAIVE ATOMIZBRIOB LIQUID FUEL MOTORS. APPLICATION FILED AUG.14, 1911 Patented ma 21, 1912.

Inventor.

Witnesses. "71. 772- 5 2m tures 17.

with a longitudinal passage 9 which is con- .nected with the interior of the casing 1 by UNITED STATES-PATENT OFFICE.

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To all whom it ma/y cancer St-z Etienne Department of enement, in; at new and 'ase rqllewiiig to b t f1ili;1ear-,=mt& eta

ticsrqfqthe invennearsue "as will able others ki tl'ed in ene n'eao tv it appatains te make the admissiottpo fthe jetfof zitomiied fueli Alttits Io'wewpnre this needlei issurrounded by an atomizing sleeve ivhich is mo'unted in the ipuer gui'dle bqw and; comprises at its use twister" he passage of the fuel and upon its inner wall slots servin jfor 'the admission of compressed air.

1 In the accom nmying(drawing Figure '1 is a longitudinal section of a device embodying the invention. Fig. 2 is an underneath view of the guide casing. Fig. 3 is a sectional view of the atomizing sleeve. Fig. 4 illustrates a modification.

The atomizer-in accordance with the invention comprises an outcrcasing 1 comprising a socket 2 for the admission of compressed air and a socket 3 for the'supply of liquid fuel. The socket 3 communicates an openin 19.

Interna y the casing 1 constitutes a cup 12 presenting an opening 22 upon whichthe needle 5 bears: this needle is controlled by an a propriate distributing mechanism and regulhtes the admission of fuel to the cylinder. A cap 21 is screwed to the casing 1 and at its center comprises radiating aper- The casing 1 contains an inner casing 4 which serves to guide the needle 5 and contains itsstufling-box. The lower part of this casing is guided and centered upon the inner wall of the casing 1. It resents a channel l8 through which the liquid supplied through the opening 19- enters. The part 4 comprises perforatlons 10 which widen out at their lower part at 11 and comin 191 a finial osr aeme 6E mminjecting air. we; lhousing 23 formed in the part 4 con- ;tams Ian atoniizingsleeve (i'su'rrounding with! a lc ertain -number;'or perfotauons 24-.

inunicatethrOughopeningsS with the chair: n'el 18. lhe fuel to be atomized is thus subeted to a pressure cqu'aht'o that of the the 1 tnee'd le fi'and applied by a springi'to the j eii'p 12 of-theieas1ng11-in sucha manner as to perm t of unequal expansionsof the sev-- eral parts. v I "Qf imits inner wall the sleeve 6 presents a number" of slots 1-4 for" the 1 passage of the airland at its' up er'partslots 15 intended for the passa'ge' o theliquid'fuel; The slots 14! and: i 1 5' do .not necessarily 1 present the form shmvirin the drawin'g'but may present 1 any suitable form;

- "1heL device acts in the 'following. manner.

Atiuits: lower part the casing 1 containe s certainu quantity" of] fuel 1 upon which the pressure of the' injection 1 air enterincig' througliwthe openings 10'an'd 11 is exe'rte When the needle rises, it uncovers the slots 14.- and 15 simultaneously. The fuel at once flows immediately through the slots 15 while the air coming from the jet 2 and conducted through the apertures 24 into the chamber 23 passes through the slots 14 below the needle 5. Owing to the tangential arrangement of the slots 15 an eddying sheet of fuel is formed in the opening 22 and the air r0-.

jectcd through the slots 14 divides the s eet and atomizes it. The jet of atomized fuel escapes through the openin 17p,

Fig. 4 shows aslightly di erent construe tional form of the atomizing sleeve. This sleeve, instead of presenting longitudinal slots 14 internally is formed with a smooth wall but is mounted on the needle5 with" sufiicient play to e injection air.

In the atomizer which forms the object of the invention contact bewea the atompermit of the passage of izer fuel-and the walls of theapparatus is avoided by producing the atomizmg m as close proximity as possible to the lower part of the needle so that the fuel has only a very short path to traverse before it enters the driving cylinder: this insures bustion and high efiiciency. he ratio between the volumes of fuel and air introduced is equal to the ratio between the free" erfect comemains constant during the entire period :t he lift of the needle:'th1s condition is o highly advantageous from the point of View of tie combustion. The atomizing of the construction and very easily taken a art:

it also permits of unequal expansion the several parts.

l; claim:

LThe combination in an atomizer provided with an inner and outer casing, an aperture in the outer casing and a needle to cooperate therewi th, of passages in said casings adapted to conduct oil to the aperture, a second set of passages independent of the first adapted. to conduct compressed air to the aperture, and a passage adapted to allow the compressed air to act on the oil to force it toward the aperture.

2. In an atomizer, an outer casing pro- I rided with an aperture, an inner casing, a

needle to cooperate with said aperture carried by said inner casing, passages in the outer casing, passages in the inner casing notions of the slots 14 and. 15. This ratio cooperating with the first named passages to conduct the oil to the aperture, a second set of passages'in the inner casing and a clearance between the cnsi s tocoiiperate with said second seeof passages to conduct compressed air tothe said aperture, pas sages connecting the said clearance With the said oil passages tcralloW the compressed air to exert a pressure on the 1 to force it toward the aperture; a

3. In an atomizer, an outer casing provided with an aperture, an. inner casing, a needle carried by said inner casing adapted to close said aperture, passages in said cas-' ings, an oil chamber between said casings adjacent the aperture, passages in said casings adapted to conduct oil to said, chamber, passages substantially atright angles to the axis of the atomizer toconduct the oil from said. chamber to the aperture, an air chamber in, said inner casing, means to conduct compressed air to said chamber, passages substantially parallel to the longitudinal axis of the atomizer and adjacent the needle to conduct the air from said air chamber to the aperture, and means to exert a pressure on the oil in said oil chamber.

in testimony whereof I aflix my signature, in presence of two witnesses.

J OS lPH LEFLAIVE. \Vitncsses:

J. LONGET, EDMUND A. BURRILL.

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