USRE14045E - heftler - Google Patents

Description

v: H. HEFTLER.

CARBURETER.

APPLICATION FILED APR. I, 1,915.

Reissued Jam. 11, 1916.

VM; @I A WITNESSES UNITED STATES PATENT oEEIcE.

VICTOR R. HEFTLER, 0F DETROIT, MICHIGAN, ASSIGNOR T0 SOCIETE DU CARBURATUR ZENITH, 0F LYON, FRANCE, A CORPORATION OF FRANCE.

v CARBURETER.

Specification of Reissued Letters Patent. Reissued Jil-I1. 11, 1916.,

Original No. 1,096,626, dated May 12, 1914, Serial No. y684,937. Application for reissue filed April 1, 1915.

' Serial No. 18,603.

T0 all 'Lv/wm t may concern.'

Be it known that I, VICTOR R. HEFTLER, a citizen of the Republic of France, residing at Detroit. in the county of Wayne and State of Michigan, have invented a new and useful Improvement in Carburetersiof which the following is a full, clear, andl exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention relates to carbureters, and has for its object an improved arrangement of parts whereby the engine which'it serves may be most economically run under ordinary and normal conditions, and which is at the same time capable of furnishing a much richer explosive mixture than usual, when, for example, the low temperature of the air makes it diiiicult and often almost impossible to secure ignition of a mixture that ander ordinary circumstances is red Without difficulty.

In the drawings: Figure 1 is an elevation, partly in section, of a'carbureter of my improved type, showing the controller and regulating valve in its normal open position. Fig. 2 is a fragmentary and largely sectional view showing the valvevadjusted so as to connect the supply chamber of the carbureter directly with the intake pipe connecting with the engine cylinder.' Fig. 3 is a similar view, with the valve closed, so as to shut off,

the supply chamber from the outside atmosphere, thereby enabling a'richer mixture to be ejected from the spraying jet in the 'carbureter chamber.

A represents the Hoat chamber of a carbureter, in which is the usual stem-guided Hoa-t B, and from which a passage C leads to the supply chamber D. A passage E in turn leads from this chamber into'the car bureting chamber G, terminating in the spray nozzle F. 'The 'throttle member B regulates the quantity. of explosive admitted to the engine cylinder. y

. At the top of the supply chamber is a three-way valve J, which, when in the open position shown in Fig. 1, connects the in,- terior of the chamber directly with .the atmosphere, thereby subjecting its interior and its liquid fuel contents, which it has received through the passage C, directly to the influence of atmospheric pressure, thus giving this iniuence to the regulation of the upon the controlling linkK turns the valve f plug J `so as to close the top of the supply chamber 'entirely7 thus cutting off the atmospheric pressure regulation of the quantity of fuel delivered into the supply chamber, and drawn thence into the carbureting chamber. A much richer mixture, is thus drawn through the spray nozzleby .the suc.- tion in the exhaust to the engine cylinder, so rich that, in spite of the low temperature of the air its ignition by the usualmeans is easy, and by turning the valve J farther to the position shown in Fig. 2, the supply chamber may be connected directly with the exhaust portion of the carbureter chamber which leads to the engine cylinder the medium of the pipe L, thus enabling a still stronger suction upon the supply of fuel in the float vchamber A.

At low suctions, the level of the fuel in chamber D does not fall suiiiciently to uncover the passage E for the passage of air therethrough, and whether the valve J is in the position 'shown in Fig. 1 or that shown in Fig. 3,'does not materially affect the action. When, however, Vthe suction is high enoughto uncover the passage E, when the valve J is in the normal position of Fig. 1

and valve J is then turned to the position shown in Fig; 3, the flow of fuel is greater than if valve vJ were in the position of Fig. l. The parts are so ,proportioned asto uncover the passage E at a properpoint in the range of suction Ain the engine when the valve J is in the normal position of Fig. 1. When the valve J is in the position shown in Fig. '2, the action depends, largely upon the position `of the throttle. If the throttle is fully open, and the suction is suiciently low to keep the passage E covered, the ow to the'nozzle'F is not materially affected by the positionv of the valve J. lIf, however. the suction is high enough to uncover E, if the 'valve J were in the normal position of Fig.

l,A the action will beksubstantiall'y thesame,

with the valve in this position, as if said valve were closed, as .the suction' will be transmitted to the passage C. If, however, the throttle is closed, fuel will flow through the passage L, when the valve J is in the po sition of Fig.

It should be understood that this invention is easily applicable to other carbureters than the specific form here chosen for illustration, the changes necessary being of negligible degree.

Vvlhat lclaim is: v

4 l. ln a carbi'ueter, the combination of a float chamber, a supply chamber connected therewitlna carbureting chamber connected With said supply chamber, a pipe leading from said supply chamber to a point in said carbureting chamber near the throttle, and a. valve whereby the same may be closed and whereby the connection between said supply chamber and the outside air maybe regulated; substantially 'as described.

2.. The combination of a float Chamber, a

supply chamber, and a carbureting chamber connected in theorder named, a pipe lead- 'ing fromthe top of the supply chamber to a point above the throttle in the carbureting chamber, and a val-ve whereby the same may be regulated, and by Whose further movement the interior of the supply chamber may be exposed to atmospheric pressure.

3. ln a carbureter, a constant level feed chamber, a Well having an air inlet in itsY upper portion, a fuel supply channel eX- t'ending from the constant level chamber into the Well, a lfeed tube leading from the lower portion of the Well into the carbureting passage and a hand controlled valve deyiee arranged to control the admission of VICTOR n. HEFTLER.

Witnesses: u H. M. CoRwIN,

1 A. F'. TIBBETTs.

Images