US908527A - Internal-combustion engine. - Google Patents

Description

C. W. WEISS. INTERNAL GOMBUSTION ENGINE. APPLICATION FILED MAY 12, 190s.

Patented Jan. 5, 1909.

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CARL W. WEISS, OF NEW YORK, Y.,

ASSIGNOR OF ONE-HALF TO AUGUST MIETZ, OF NEW YORK, N. Y.

INTERNAL-COMBUSTION ENGINE.

Specification of Letters Patent.

Patented Ian. 5, 1909.

Application filed May 12, 1908. Serial No. $32,384.

To all whom it may concern:

Be it known that I, CARL W. WEISS, a citizen of the United States, residing in the borough of Manhattan, in the city of New York, in the State of New York, have invented certain new and useful Improvements in Internal-Combustion Engines, of which the following is a specification, reference being had to the accompanying drawing, forming a part hereof.

This invention relates to the introduction into the working cylinder or explosion chamber of the air which, with the fuel, forms therein the explosive mixture and in accordance with the invention the exhaust from the cylinder or. explosion chamber is made to act by induction or aspiration upon a body of fresh air so as .to place the same in position to be drawn into the cylinder or explosion chamber through the exhaust opening as the pressure in the cylinder or chamber falls below atmospheric after the expulsion of the dead gases. When the exhaust port is opened, either by being uncovered by thepiston in its movement or by being opened through suitable mechanism actuated from some moving part of the engine, the dead gases immediately escape w th a bi h temperature and with such a high velocity that if the gases are directed through a suitable inductor or aspirator a:

flow of fresh air will be induced from a .the charge may be introduced in any convenient and suitable manner, either with the air or independently thereof. Incidental to the introduction ofthe 'air in this manner, the number of'nece'ssary ports inthe cylinder is reduced to one and, furthermore, the noise of the exhaust is largely reduced.

,It will be obvious that the form of the devices'employed for the introduction of the air in the manner described may be varied and that such devices may also be connected difierently to the cylinder or chamber, all as may be rendered desirable by the particular conditions of use.

In the accompanying drawing there are.

shown, for purposes of illustration and explanation of the nature of the invention, several embodiments of the invention which are found to operate satisfactorily in actual use.

.In the drawing-Figure 1 is a view, partly in elevation and partly in longitudinal central section, of an internal combustion engine of a well known type to which one form the exhaust port and the port for the introduction of the air and is uncovered by the piston c as the latter approaches the limit of its forward stroke. The piston 0 may be connected as usual to .the crank shaft d. A fuel inlet, which may be of any usual or suitable character, is shown at e as located near the head of the cylinder, and thereis also shown an igniter f, which likewise may be of any usual or suitable character. Connected with the exhaust port 6 is an inductor or aspirator g which preferably comprises an expanding nozzle h, whereby the pressure of the escaping gases is converted into velocity, as is well understood, and with an air inlet port 73 which is properly located with respect to the nozzle 71, so that the escape of the gases through-the nozzle h produces an aspiratmg efiect or induces a flow of air inward through the air port 41 into the extension is of the aspirator or inductor.

It will be understood that, in the operaases cause an inflow of air through the air inlet 2' so that the extension is of the inductor is practically filled with pure air as soon as the escaping gases lose their great velocity. The expansion of the gases when released sion in is sucked into the cylinder before, the

port 6 is closed by the rearward movement of the piston. The air which is thus sucked into the cylinder mingles with the fuel element of the charge to form an explosive mixture in the usual manner and the fresh charge thus formed in the cylinder is compressed by the backward movement of the piston in the usual manner.

In Fig. 2 of the drawing the aspirator or inductor 9, provided as before with a nozzle h, an air inlet 71 and an extension 70', is slightly different in form from that shown in Fig. 1 so as to provide for a discharge of the gases in a different direction, and in this construction the inlet 2' for the fuel element is shown as located in the nozzle it, so that the fuel element is carried into the cylinder with the air.

In the construction shown in Fig. 3, the inductor or aspirator g is substantially the same in form and details of construction as that shown in Fig. 2, but the exhaust port 22 in this instance,is shown as located near the head end of the cylinder and as controlled by a valve Z which is actuated, to open the port, at the proper time from some convenient moving part of the engine, as

particular constructions shown and described herein or any of them. I

I claim as my invention:

1. An internal combustion engine having an air inductor applied to the exhaust port, whereby the escaping exhaust gases induce the flow of a body of air which is drawn into the cylinder or chamber through the exhaust port as the pressure therein falls.

2. In an internal combustion engine, the combination with a cylinder or chamber having an exhaust port, of an inductor or aspirator applied tothe exhaust port and provided with an air inlet and an extension, whereby the escape of the exhaust gases induces a flow of air into the inductor or aspirator and the air is drawn into the cylinder or chamber through the exhaustport as the pressure therein falls.

This specification signed and witnessed this 4th day of May, A. D., 1908.

' CARL W. WEISS.

Signed in the presence of:

W. GREELEY, AMBROSE L. OSEEA.

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