US1704297A - Eductor for ventilating internal-combustion engines - Google Patents

Description

March 5., 1929. ERr 1.704297 EDUGTOR FOR VENTILATING INTERNAL COMBUSTION ENGINES Filfid April 6, 1927 'illllll: mm

i; ATTORNEYS Patented Mar. 1929.

* UNITED STATES AUGUST H. LEIPEBT, OF COLLEGE POINT, NEW YORK, ASSIGNOR TO INTERNATIONAL MOTOR COMPANY, OF NEW YORK, N. Y., A CORPORATION OF DELAWARE.

1,704,z91 PATENT OFFICE.

EDUCTOR FOR VENTILATING INTERNAL-COMBUSTION Application filed April 6,

In the design of a motor vehicle chassis, due consideration must be given to the apparatus for cooling the engine and the most widely used method is that of circulating a liquid within the cylinder block and through a radiator toefiect the cooling thereof. If the radiator is placed at the front of the car, little diiiiculty is had in sufficiently coolingthefluid, since a fan, operated from the crank shaft, can e used to'great advantage in back of the radiator. Where, however, the radiator consists of two vertical .columns at either side of the engine and to the rear thereof, the problem of'providing an adequate circulation of air through the radiator elements becomes more acute.

' The usual method of using a squirrel cage fan on the crank shaft, or extension thereof, is one way in which the circulation of cooling air may be effected and the presentinvention deals with another method of ac- I had.

coinplishing this result wherein the exhaust gases are used and, by means of suitable Venturi throats, a desired circulation may be I An object of the present invention is to provide a means for circulating cooling air through the radiator of a vehicle by creating a suction with the exhaust gases. The structure by which this is accomplished eliminates considerable weight as well as reduces the number of rotating parts. In addition tov simplifying the design, the clearance between the chassis and road bed is increased.

A further object of this invention is'to adapt a circulating system of the improved type noted above to circulate cooling air throughradiator elements disposed at the rear, and at either side of the engine.

Reference will-now be had to the accom- .panying drawings forming a part hereof for a more detailed description of the invention, wherein:

Figure 1 is'a side elevation, partly in section, showing a vehicle with a circulating system constructed in accordance with the 'present invention.

Figure2 is a section taken on the line 2-2 of Figure 1 and, looking inthe direction of the arrows. I

Figure 3 is a view in section through a radiator and showing a modified form of the invention.

Referring particularly to the drawings, a

1927. Serial N0. 181,807.

indicates the engine of a motor vehicle with an exhaust line a. This line extends downwardly, in one form, and carries a nozzle a which extends Within a housing'd to be described later. The hood ofthe engine is in dicated diagrammatically at b and the radiator at 0. The radiator is mounted at the rear of the engine'and carries two sections of water tubes 0' and c at either side thereof. Between the sections, bafiles 0 are provided to direct the flow of'air and produce a desired rate of flow along the various sections of the tubes.

At the bottom of the radiator a housing 11 is-provided to direct the flow of air through the exhaust neck d of the housing. A tapered exhaust line (i may be provided .to give an added Venturi effect as well as deaden the noise of the exhaust to some ex-' tent. f

The nozzle a directs the exhaust gases I into Venturi sections 6 which may be'secured to the housing (Z by means of suitable straps f and by reason of the suction created by the flow of exhaust gases throu h the successive Venturi throats the air wi 1 be drawn through the cooling tubes and carried out the exhaust line to produce the necessarycooling effect upon the cooling liquid,

In Figure .3 a modified form is shown wherein inner and outer pairs of bafiies g and h are used. Between the respectivesides of each pair is formed a Venturi throat and the exhaust line a is divided into .two branches 2', each having nozzles z" disposed within the Ventu'ri' throats. The battles carry the currents of air down to housing y from which they flow through opening j into a suitable exhaust line.

The use of the Venturi effect with exhaust gases is shown to be old and such mechanisms are not intended to be covered'in this application. It is, however, the specific structure, adapting the exhaust Venturi features to radiators of the above construction to which the present invention is directed and obvious variations in the arrangement of parts to suit individual constructions are understood as falling within the scope'of the invention as defined in the appended claim.

What I claim is:

In a device for facilitating the flow of,

tions disposed rearwardly of the "engine, an

from the radiator sections to the exhaust 5 line, said means including bafiles constructed V to form throats through which the cooling air passes, aplurality of nozzlesconnected T to the exhaust pipe, and means for mount- 4 v ing them in the'throats to-direct the exhaust.

gases downwardly therethrough, whereby v the cooling air is drawn through theradiator sections by the suction. produced thereby.

This specification signed this lstday of April, A. D. 1927.

AUGUSTH. LEIIERI.

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