US1097944A

US1097944A - Automatic auxiliary air control for gas-engines.

Info

Publication number: US1097944A
Authority: US
Inventors: George Riley; Hans E Olsen
Original assignee: Individual
Current assignee: Individual
Priority date: 1912-01-31
Filing date: 1912-01-31
Publication date: 1914-05-26
Anticipated expiration: 1931-05-26

Description

RLEYQ H. E. OLSEN.

AUTOMATIC AUXILIARY AIR CONTROL FOR GAS ENGINES.

f APPLICAUON FILED uns@ ma.

Il,()Q'TQELQLALI Patented May 26,191.4:4

` HANS E.

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vTo all whom it may concern:

vented new and useful Improvement auxiliary, engines.

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GEORGE RILEY AND HANS E. OLSEN,OF PETALUMA, CALXFORNA. y

AUTOMATIC AUXILIARY AIB CONTROL FOR GAS-ENGINES.

Specification of Letters Patent. Patgntd Mlgvy 26, `1914, Application filed January 31, 1912.` Serial No. 674,597.

the gasolene or other volatile liquid and air is delivered to the pipe 2 from any source of The customary throttle valve 4 is disposed in the pipe 2 between the carbureter 3 and the inlet to the cylinder by means of which the quantity of the mixture introduced into the engine cylinder is regulated.

-The essence of this invention resides in disposing a peculiarly constructed, auxiliary air-inletdevice in the pipe 2 between the throttle valve l and the inlet to the cylinder A, which device is designed for the purpose of admitting a quantity of air to the engine cylinder on the charging stroke, to increase the volume ofA air in the explosive mixture delivered through the carbureter 3 and throttle valve A; and which is so constructed as to automatically regulate the quantity of airpassing therethrough in proportion to the quantity of the explosivemixture passing through the throttle valve 4e; and which can be set to vary the proportions as circumstances require.

lThe Vair inlet valve constituting our. present invention is particularly shownfin Figs. 2 and 3 of the drawing, and comprises a cylindrical casing 5 tapered inwardly on its 'outer' periphery from its lower to its upper end. A threaded-nipple 6 is formed on the lower end of the casing 5 which is adapted to be screwed into the pipe 2, and the upper endof the casingv 5 is threaded to receive a cap 7.

A sleeve 9 is s lidably mounted on the ta- Gnonen Rumi' and OLsnN, both citizens of the United at Petaluma, in the county State of California, have ins in Auxiliary Air Control Jfor Gaswhich the following is a speci- Be it known that we,

States, residing of Sonoma and Automatic Engines, o

This I'invention relates lto an automatic, air controlling rappliance for gas of this invention to proair admission appliance the intake of gas engines between the engine and carbureter, by means of which the proportions of air and gas in thc explosive mixture delivered to the engine cylinders, will be varied to suit ditlerent con ditions, such as are occasioned by changes in temperature and altitude, or other causes,- thereby maintaining a proper mixture at al times.

lAnother object is to provide means for admitting air to 'the engine cylinder on the working stroke ofthe engine piston, after the throttle valve is closed, to form a cushion for the piston on its return stroke to retard act as a brake. A further object is to provide a device of the above character which is simplein construction, eilicient in operation, inexpensive in manufacture, and not liable to get out of order.

Other objects, together with the advantages to be derived from the use of this invention, will v appear hereinafter.

The invention consists of the parts and the construction and combination of parts, as hereinafter more`` fully described an lt is the object vide an automatic for attachment to and contacting the outer claimed, having reference to the accompanya series of perforations l2 and a vertically ing drawings, in which 1 disposed slot 13 formed in the casing 5,A as lFigure lis a view in elevation of a four shown in Fig. 3; the leverv arm 11u; being cylinder gas engine, withparts broken away, operated through a connecting rod 14 from any desired point.

invention as applied. Fig. 2 is a vertical section of the elevation. Fig. 3 is an elevational viewlof. aroundthe casing 5 adjacent its upper end, same. Fi 4: is a plan view. which bears between an overliangin portion ln the drawings, A represents a gaslengine cylinder of any su'tabl'e type and 2 indicates the intake or feed pipe'for delivering an explosive mixture of gasolene and air to the interior of the cylinder at the upper end thereof. A carbureter 3 of any desired construction connects with the pipe 2 in the usu'al well-known manner, through hich 9 to normally retain the tapered inner surface of the sleeve in contact with the tapered outer surface of the casing ing a close fit between the vsleeve and casing. The spring 15 thus acts to hold the sleeve 9 in its lowermost-position and on the casing v5, thereby 'cmpensating for The sleeve 9 'is formed of the cap 7 and the upper end of t e sleevepered exterior of the casing 5, with 'its linner An expansible spiral'spring 15 is wound ios d 5', thereby insur- Wear of the contacting surfaces of the casing 5 and sleeve 9.,

Within thecasing 5 is a piston 16 which is loosely mounted on a stem 17 extending through and guided in the cap 7. The piston 16 is normally held in its uppermost position in the casing 5 by means of a helical spring 18 Wound onA thestem l7-and bearing between the upper end of the cap 7 and an adjustable collar 19 threaded on the upper end of the steml 17 A lock nut 20 is screwed on the stem 17 above the collar 19 and is provided for holding the collar 19 against being displaced.

The-piston 16 is provided as a means for automatically closing the perforations 1Q and slot 13 in the casing 5, or portions thereof, to regulate the quantity of air ad mitted to the interior of the casing 5, as will presently be described.. A pin 2l on the casing 5 acts on the vertical edges ot the slot 10 to limit the movement of the sleeve 9 in either direction in opening or closing the perforations 12 and the slot. 13.

ln the operation of this invention, when it is desired to increase the quantity of air in the explosive mixture discharged through the carburetor 8 and throttle valve et, the sleeve 9 is turned te expose a portion of the perforations 12 through the slot 10; theextent of the exposure of the perforations 12 being varied according to the amount ot air it is desired to deliver to the explosive mixture. .When a. small quantity of air is desired, a few of thepcrforations 19 are opened, and when a large volume of air is required, the sleeve 9 is turned, to open all the perforations 12 and the slot 13. .'lhe air is drawn into the casing 5 and from thence into the feed pipe 2, Where it mingles with the explosive mixture when the throttle valve et is open, bythe suction of the engine piston on its down stroke, and is drawn into the engine cylinder A with the explosive charge in the usual manner, As most carbureters are improperly setfor proper proportions of air and gasolene un'- der :varying conditions, the most common of which are changes in altitude and temperature, the operations of the engine will vary accordingly. By the use of this invention this diiiiculty is obviated, :tor when the engine is operating improperly, the at tendant adjusts the sleeve 9 to cause more or less air to be mingled with the explosive .mixture as the occasion may require. The

quantity of air mingling with the explosive mixture is governed by the open areas oi the perforations 12 and theextent ot the opening of the throttle valve 4+.; the latter controlling the speed of the engine. The smaller the open area of the throttle` valve 4, the greater will be the suction of the engine piston, thereby increasing thel suction 111 the casing 5 which tends to increase the volume of air drawn through the peri'ora tions 12.

It is desirable that the air passing through the perforations 12 should be proportional to the mixture passing through the throttlc valve, and this is accomplished by reason of the piston '16 Which operates automatically to close a. number of the perforations 12 when the throttle si is partially closed; the piston 1C being drawn down by the increased suction in the casing 5 in opposition to the spring 1S, the tension oi which is adjusted by means 01"' the flange 19 to suit the conditions. Vhen the throttle valve is opened to increase the speed oit the engine piston, the suction in the casing 5 becomes less and the piston 1G rises to let in a proportionately larger quantity of air. lV hen 'the throttle valve i is completely closed while the engine is running, a certain quantity of air is drawn into the engine cylinder through the pcrt'orations l2 or slot 13 on each down stroke of the eng'ne, and is conipressed on the 11p-stroke. iI`his action rctarde the engine movements and thereby acts as a brake. In this application of the invention, the sleeve 9 may' be' turned to open the slot 13, Which will permit of a quick inrush of a large volume of engine cylinder.

Having thus described our invention, what we claim and desire to secure by Let ters JPatent is l. An auxiliary air control for an intake pipe of a engine comprising` a valve adapted to cooperated by engine suction, and manual means tor varying the amount ot air admissible through said auxiliary air control,independent of said valve.

2. n auxiliary air control :icr an intake pipe of a gas engine comprising a Valve adapted to be operated by engine suction, and manual .means for varying the amount of air admissible through said auxiliary air control independent ci the Valve, said means including` a rotatable sleeve and a connec tion with the sleeve for operating said sleeve.

3. An automatic: air feeding device for gas engines, comprising a valve easing` having air inlet openings, means exterior of the casing for opening` and closing the openings, and means on the interior of the casing adapted to be operated by suction lfor closing the openings.

4. An automatic air, feeding device for engines; comprisinga casing having air inlet openings, manually operated means for air into the opening and closing said openings, and suc-- tion operated means :tor closing said .penings. l

a5. in automatic air feeding device for gas engines, comprising a casing having air inlet. openings, manually operated means Vfor opening and closing said openings, suction Aoperated cans for closing said openings,

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l and means for adjusting said suction operated means.

6. An automatic air feeding device for gas engines, comprising a easing having air inlet" openings therein, means for attachingsaid casing to the engine feed pipe, a sleeve formed with a slot revolubly mounted on said casing, meansfor rotating said sleeve to admit air to the interior of the casing through the perforations in the casing and the slot in the sleeve, and suction operated means inside the casing for closing the perforations.

7. An automatic air 'feeding device for gas engines, comprising a casing having air inlet openings therein, means for attaching said casing to the engine feed pipe, a sleeve formed with a slot revolubly mounted on said casin means for rotatin said sleeve z formed with a slot revolubly mounted on said casing, means for regulating the frictional engagement of the sleeve with the casing, means for limiting the rotary movement of the sleeve, means for rotating said sleeve to admit air to the interior of the casing through the perforations in the casing and the slot in the sleeve, and suction operated meang inside the casing for closing the perforations, including a piston, a stem on which the piston is mounted, and adjustable spring means for retracting said piston.

9. In a device of the class described in combination, a casing provided with openings, a revoluble member provided with a slotted portion and adapted to rotate upon said casing, a piston withinrsaid casing and 'adapted to open and close said openings,

and a spring tending to resist the movement of said piston to close said openings, substantially as described.

n testimony whereof We have hereunto set our hands in the presence of two subscribing Witnesses,

' GEORGE RILEY. HANS n. oLsnN.

Witnesses:

A. Roncnns, I 'W. C. RAYNEB.

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