US1527579A - Automatic control for explosion engines - Google Patents

Description

Feb.24, 1925. v I

R. LOSTU RDEVANT AUTOMATIC common FOR axmosmul ENGINES Filed April e, 1923 2 Sheets-Sheet 1 2x 1. kszar ew f INVENTORQ ATTORNEYS.

Feb. 24,1925.

. 1,527,579 R. L. STURDEVANT AUTQIATIOCONTROL FOR EXPLOSION ENGINES Filed Aprii e, 1923 2 Sheets-Sheet 2 7)!1 .Z. LSZZraQZ/a wt 7 INVENTOR. WITNESSES ATTORNEYS.

Patented Feb. 24, 1925.

UNITED STATES REX L. STURDEVAN'I, 0F MANCHESTER, MICHIGAN.

AUTOMATIC CONTROL FOR EXPLOSION ENGINES.

Application filed April 6,

To all whom it may concern:

Be it known that REX L. STURDEVANT, a citizen of the United States, residing at Manchester, in the county of Viashtenaw and State of Michigan, has invented certain new and useful Improvements in Automatic Controls for Explosion Engines, of which the following is a specification.

This invention relates to an improved control attachment for internal combustion engines, and it has more particular reference to a device of this kind permitting the charge to the cylinders of the engine to be automatically controlled, in accordance with the demand of the engine for fuel.

In accordance with the invention, a butterfly valve is installed in the intake manifold and this valve is actuated by solenoids which are responsive to varying degrees of current acting against a coiled spring with the pull of the solenoids rendered constant by an especially shaped armature whereby the pull of the solenoids is effectively constant in accordance with the increased resistance of the spring against which they act so that as the speed of the engine increases and the resistance of the spring correspondingly increases, the pull upon the valve in the manifold correspondingly increases, wherefore the effective pull remains constant.

Included in circuit with the solenoids is an adjustable rheostat which may be set to vary the effective resistance of the solenoids so that as the speed of the engine increases or decreases, the amount of current flowing through the solenoids may be correspondingly increased or decreased as the case may be and the action of the solenoids is therefore rendered constant.

The solenoids are traversed by a substantially ogee-shaped core or armature, mounted to turn on a common axis and movable through the solenoids so as to exert a constant pull on the core as it is drawn about the common axis, thus equalizing such pull modified by the increase or decrease of the effect of the current traversing the solenoids.

The invention will be best understood from a consideration of the following detailed description taken in connection with the accompanying drawings forming part of this specification with the understanding, however, that the invention is not confined to any strict conformity with the showing in the drawings but may be changed and modifled so long as such changes and modifica- 1923. Serial No. 630,383.

tions mark no material departure from the salient features of the invention as expressed in the appended claims.

In the drawings:

Figure 1 is a view partly in section, and partly in elevation, of a device constructed in accordance with the present invention.

A Figure 2 is a section on the line 22 of Figure 1;

Figure 3 is a section through a butterfly valve comprising part of the invention; and

Figure 4 is a diagram illustrating the working parts of the invention.

Referring to the drawings, there is shown a manifold 1 which may represent the intake manifold of an explosion enginesuch as usually employed in connection with automobiles and this manifold is provided with flanges 2 having means by which it is attached to the usual pipes 3 for conducting the charge to or from the engine cylinders.

Mounted in the flange portion of the in take manifold is: a butterfly flange 1 which may be of usual constnuction and carried by a shaft 5 in turn carried by bearings 6 enclosed in a casing 7 about which the butterfly valve may turn as an axis.

Fastened to the shaft 5 is a substantially ogee-shaped core or armature 8 with its curved portion or branches oppositely disposed and concentric with the casing 7. In the casing 7 are oppositely directed arcuate solenoids 9 carried by blocks 10 made fast to and contained within the casing 7.

Fastened to the shaft 5 is a helical spring 11 to oppose the movement of the core. The curved branches of the armature enter the solenoids 9 and wind the spring 11 when the solenoids are energized.

The two solenoids 9 are connected in series by conductors 12 and 13 respectively, with the conductor 12 connected to the brush 14-. which is in turn connected to the armature 15 of a dynamo electric machine carried by the shaft 16. The conductor 13 includes a rheostat 17 for controlling the amount of current flowing through the solenoids 9 for the manual regulation of the energization of said solenoids.

The manifold 1 is designed to be installed in the path of flow of the charges and the flow of current through the solenoids 9 to regulate the position of the butterfly valve 4 to control the flow of the charges in accordance with the speed of the engine so that as the speed of the engine increases the position of the valve i will be changed to reduce the amount of charges permitted to flow past the valve 4: in accordance with said speed so that the action of the invention is wholly automatic except that the rheostat 17 may be further controlled to regulate the amount of current passing through the solenoids 9.

hat is claimed is:

Means for controlling the supply of gaseous fuel comprising a casing, a valve of the butterfly type pivotally mounted therein and having its stem projecting beyond the side of the casing, a helical spring mounted upon the casing and connected with the valve stem to hold the valve at a normal position with relation to the passageway through the casing, arcuate solenoids mounted upon the casing at opposite sides of the valve stem and connected in open circuit, and an ogeeshaped armature mounted at a point midway between its ends upon the stem and having its curved end portions slidably received in the arcuate solenoids.

In testimony whereof I aflix my si nature.

REX L. sTURDEviiNr.

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