US448136A - Means for governing ob regulating the action of gas or other - Google Patents

Description

- 2 SheetsSheet 1. TTE ILLB 8: L. LANDIN.

LATING THE AGTI GAS OR OTHER OSIVE ENGINES.

UL P WEX RE BBB EOK H m mm B W MG H e 0 dDP m .S o E M No. 448,136. Patented Mar. 10, 1891.

WITNESSES eSm/Ji' Arron/m8 (No Model.) 2 Sheets-Sheet 2.

E. DELAMARE-DEBOUTTEVILLE & L. MALANDIN. MEANS FOR GOVERNING 0R REGULATING THE ACTION OF GAS OR OTHER LIKE EXPLOSIVE ENGINES. No. 448,136. Patented Mar. 10, 1891;

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Unitas STATES ATENT EDOUARD DELAMARE-DEBOUTTEVILLE AND LEON MALANDIN, or FONTAINE LE-BOURG, Brannon.

MEANS FOR GOVERNING OR REGULATING THE ACTION OF GAS OR OTHER LIKE EXPLOSIVE ENGINES.

SPECIFICATIOI I forming part of Letters Patent No. 448,136, dated March 10, 1891. Application filed October 14, 1890. $eria1 No. 368,141. (No model.) Patented in England $eptember 20, 1890,11'0. 14,900.

To 60% whom it may concern:

Be it known that we, EDOUARD DELAMARE- DEBOUTTEVILLE and Leon MALANDIN, both citizens of the Republic of France, and residing in Fontaine 1e Bourg, (Seine Inferieure,) France, have invented certain Means for Governing or Regulating the Action of Gas and other Like Explosive Engines, of which the following is a specification.

IO This invention relates to means for governing or regulating the action of gas -and other like explosive engines with considerable accuracy, so as to admit of their bein g employed for driving dynamos, for example. This arrangement for regulating the speed may. be combined with an improved arrangement of the piston,-whereby a more perfect expansion is obtained, as hereinafter explained.

In employing gas engines for driving dynames, for example, it is necessary to obviate the jerks or irregularities, however slight, that are caused when the admission changes from full to nothing, or vice versa. Vith this object it has already been proposed to 2 5 weaken the gaseous mixture by varying the proportion of gas admitted. The chief disadvantage of this method is that it is not practicable except by varying the proportion of gas within very narrow limits and produc- 0 ing gaseous mixtures less easily ignited. By

means of our present invention these disadvantages are obviated, the gaseous mixture is allowed to retain its full proportion of gas, so that its ignition is certain, and the amount of mixture admitted into the cylinder is regulated according as the speed of the motor rises above the normal rate. These arrangements are completed by regulating the airpump in a peculiar manner, as hereinafter described, and byincreasin g the length of the piston,so as to obtain in additiona more perfeet expansion of the gas and a more complete exhaust or discharge of the products of combustion. This system of governing or 5 regulating can be applied with the greatest facility to gas-engines of all descriptions.

In order that our said invention may be fully understood we shall now proceed more particularly to describe the same, and for that purpose shall refer to the several figures on the annexed sheets of drawings, the same letters of reference indicating corresponding parts in all thefigures.

Figures 1 and 2 of the accompanying drawings illustrate in elevation and in section, resp'ectively, an example of an arrangement for regulating the action of a gas-engine according to our invention. Figs. 3 and 4 are diagrams relating to the action of the engine, as hereinafter explained.

For the purpose of explanation, we have shown the regulating mechanism arranged for acting in combination with our improved gas-engine of the type known as the simplex; but it is evident that the invention can be applied with equal advantage to any other type of gas motor or engine by suitably modifying the details of construction, as will be readily understood by persons conversant with the construction of these engines.

Referring now to Figs. 1 and 2, M represents the slide-valve, N the slide-valve cover, and O the mixing-chamber. In the interior of the chamber 0 there is a rod or shaft T, formed with a ring or perforated enlargement 7 5 through which the spring of the gas-valve S works, as shown in Fig. 2. This shaft is connected at one end with a perforated disk working on a correspondingseat b, so as to form a rotary disk-valve with openings of such dimensions as to be capable 'of allowing the maxim um charge to pass into the cylinder from the mixing-chamber when the valve is fully open. A spring 4', coiled round the shaft T between the side of the chamber and the enlargement on the said shaft, serves to maintain the valve-disk a in contact with the seat Z), which is firmly fixed in' the bottom or end of the mixing-chamber. The other end or the shaft T passes through the side of the mixingo chamber, and is provided externally with an arm 75, moved in one direction by an adjustable spring c, Fig. 1, and in the other direc tion by the piston-rod p of a piston working in an air-chamber G. This air-chamber is attached by a bracket f to the mixing-chamber O, and communicates through a tube 6 with an air-pump or regulator R. This pump or regulator is attached to the cover N of the slide-valve M, and its piston is moved by the slide-valve by means of a rod A, connected to of the admission-port 0 in the slide-valve M.

This amount of play is necessary in order to insure the admission of the proper proportion F of gaseous mixture at the required time.

The pump or regulator R is provided with an adjusting-screw valve 9', controlling the amount of air that is forced in under the piston in the air-chamber G, and thus enabling the action of the pump to be adjusted according to the speed at which the motor has to run. When the pump or regulator is thus adjusted, the orifices in the disks a and Z) coincide exactly, and the full supply of explosive mixture passes through the valve a. So long as the engine runs at its normal speed these conditions are maintained, the same quantity of mixturebeing supplied foreach explosion. In case the engine tends to run even slightly faster than the rate for which it is adjusted,

the air regulator or governor R pumps a corresponding quantityot' air into the air-chamher 0, raising the piston therein and rod 13 to an equivalent extent. This causes the rod 1) the supply of gaseous mixture by means of the rotary disk-valve a h before the piston has reached the end of its first forward stroke,

or when the side 10 11 of the piston has arrived, say, at the line 12 13. Under these conditions the angle of the period of admission becomes reduced to the segment 1 5 2, Fig. 3, and the supply of gaseous mixture being cut off at 12 13, Fig. 4, the mixture expands as far as the line 12 13. Ignitition taking place, the piston is driven to the end of its stroke, but the expansion is more complete than it was before with the ordinary to act upon the arm I. and rotate the shaft T in such a manner asv to displace the rotary disk-valve a on its seat 7), and cause it to more or less obstruct the passage of the gaseous mixture. The supply of explosive mixture is consequently reduced in proportion to the amount of closing of the said valve, and the force resulting from the combustion is correspondingly lessened. \Vith this arrangement a constant supply of explosive mixture is proto the power to be developed, while the propor-' tion of its constituents remains unaltered. In an ordinary gasengine, the gaseous mixture thus introduced would act in four periods represented diagrammatically in Fig. 3.

arrangement and an important saving of gas is effected. Moreover, the compression-chamber is thus reduced in volume and a smaller quantity of inert burned gases is retained, hence further economy is effected. The expansion being more complete the burned gases escape at a lower temperature during the period of exhaust.

Our improved system of regulating and the resulting modifications which we introduce in the pistons and lengths of the periods in the working of gas-engines will now be readily understood without further explanations.

Our said system is applicable to all types of gas-engines, the details of construction being obviously modified to suit the engine to which it is applied.

Having now particularly described and as certained the nature of oursaid invention and in what manner the same is to be performed, we declare that what we claim is 1. In a gas-engine, the combination of the Q n1ixing-chamber with a valve between the vlded, being regulated in quantity according T In this figure, 1 5 2 represent the period of admission.

compression. 5 4- represent the period of combustion. at 5 1 represent the period of exhaust. In thismotor also the compressionchamber would be represented (see diagram, Fig. 4) by the parallelogram (i 7 10 11, the internal section of the cylinder being repre- 2 5 3 represent the period of sented by the parallelogram (5 7 8 i), the stroke of the piston being from the line 10 5 11 to the line 12 1S, and the length of cylinder necessary for the guidance of the piston being from 12 13 to 8 0.

said chamber and the cylinder and means consisting of a pump actuated by the engine and an air-chamber connected to the pump and containing a piston to automatically control the valve to regulate the amount of explosive mixture admit-ted to the cylinder.

2. In a gas-engine, the combination of the mixing-chamber with a regulating-valve between the mixing-chamber and the cylinder, an air-chamber containing a piston to control the regulating-valve, and a pumpor regulator provided with an adjusting-valve to regulate the supply of air to the air-chamber in proportion to the power to be developed, as and for the purposes set forth.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

Vith the system of regulating or controli lin the action accordin to our resent in- E a o p vention we introduce the following modification in the working of the engine. The airchamber G is so adjusted that it shuts off lillOUARD DELAMARE-DEBOUTTEVILLE. LEON MALANDIN.

\Vitnesses:

E. DEZAUBRE, EUG. BENDEVILLE, F.

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