US1314948A

US1314948A - Internal combustion engine

Info

Publication number: US1314948A
Authority: US
Publication date: 1919-09-02
Anticipated expiration: 1936-09-02

Description

INTERNAL COMBUSTION ENGINE.

COLE.

APPLICATION FILED JANA. m1.

Pate ntedSept. 2, 1919.

aalagglllllllln @H I UNITED STATES PATENT OFFICE.

DON CODE, 0] CHICAGO, ILLINOIS, ASSIGNOR TO WAUKESHA KOTOB CO., 01 WAUKESHA, WISCONSIN, A CORPORATION OF WISCONSIN.

INTERNAL-COMBUSTION ENGDIE.

Specification of Letters Patent.

Patented Sept. 2, 1919.

T 0 all whom it may concern:

Be it known that I, Dox Come, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Internal-Combustion Engines, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to internal-combustion engines and is concerned with the flow of the combustible mixture from the carbureter to the engine cylinder or cylinders. Notwithstanding the efficient design of carbureting apparatus for producing and delivering a proportioned mixture of air and fuel, such as gasolene, difficulty is frequently encountered in getting the mixture thus formed to the engine cylinder or cylinders in the condition originally determined by the carbureter. In other words, even' though the ca-rbureting apparatus maybe highly efficient, such efliciency is frequently-lost or greatly decreased during the passage of the mixture from the carbureter to the engine cylinder or cylinders. The disposition of the usual manual throttle control atthe outlet of the ca-rbureter is a hindrance to" the continued perfection of the mixture by rea son of its mechanical efl ect thereon, first be cause it forms an irregular restriction passing beyond which the combustible mixture tends to expand, and second, by reason ofits physical formation it tends to throw the mixture forcibly against the side walls of the passageway leading to the-engine cylinder 01' cylinders. In the case of the first effect the expansion causes a reduction in speed and the tendency is for very small particles of fuel, which would otherwise be carried along with the current, to bedeposited on the walls of the-passageway. thus annihilating the proportion carefully determined at the carbureter in the first instance and causing choking of the engine due to excessive richness of mixture when the position of throttle is subsequently changed, this deposited fuel bein suddenly drawn to the cylinder or cylin ers. In the second efl'ect the deposit of liquid fuel on the walls of the passageway is due to the difference in weight between the air and the particles of unvaporized fuel.

I therefore dispose a so=called Venturi tube, well known in and of itself to those termined by the carbureter and homegeneous throughout. In this way, any particle of liquid fuel which remains unvaporized upon leaving the carbureter will either finally vaporize or will at least be kept suspended in the current to be completely vaporized as it nears and enters the hot cylinder or cylinders of the engine.

I shall describe my invention in a more detailed way by reference to the accompanying drawing which is a longitudnal sectional view of a carbureter supplemented by the passage to the engine cylinder or cylinders.

In this drawing the carbureter casing 1 is provided at the bottom with the primary air inlet 2 which leads to the Venturi tube 3 in which a fuel nozzle 4 is disposed, this fuel nozzle being supported on aspider 5 through which a passageway 6 is formed for the connection of the fuel nozzle with a suitable source of supply of liquid fuel, not shown. It may be assiuned that the normal level of fuel is on the line wm, as determined, for instance, by a float chamber. The Venturi tube 3 extends into the carbureting chamber a posed between the adjustable plug 12 and the valve 9.

The carbureter outlet is indicated at 14:, this outlet being of tubular form and being controlled by means of a butterfly throttle 15 mounted upon a stem 16 journaled in the casing 1 and extending diametrically across the outlet. The Venturi tube member 16' is secured to the flange 17 surrounding the carbureter outlet 14 and has its Venturi passageway therethrough in alinement, with and co-incident with the outlet 14, as illustrated. This Venturi tube member 16' extends into the pipe 18 which leads to the engine cylinder or cylinders, this pipe being a manifold in the case of a multi-cylinder engine. I I

It will now be clear that suction is transa higher suctions.

mitted from the engine cylinder or cylinders to the carbureter and that, responsive to this suction, air will be drawn in through passing through the outlet 14 of the car:

bureter, the combustible mixture will pass through the ventur'l tube 16, in the manner and with the efiect pointed out above, and on to the engine cylinder or cylinders.

I claim:

1. In combination, an internal combustion engine, a carbureter connected therewith, a throttle between said engine and said carbureter, and' a Venturi tube between said throttle and said engine.

2. In combination, an internal combustion engine, a carbureting chamber connected therewith, a Venturi tube leading to said carbureting chamber, means for admitting air and fuel to said Venturi tube, a throttle engine. a carbureter connected therewith, a i

butterfly throttle between said engine and said carbureter, and a Venturi tube between said throttle and said engine.

4. In combination. an internal combustion engine, a carbureting chamber connected therewith, a Venturi tube leading to said carbureting chamber, means for admitting air and fuel to said Venturi tube, a butterfly throttle between said carbureting chamber and said engine, and a Venturi tube between said throttle and said engine.

5. In combination. an internal combustion engine, a carbureting chamber connected therewith, a Venturi .tube leading to said carbureting chamber, means for admitting air and fuel to said Venturi tube, a throttle between said carbureting chamber and said engine, and a Yenturi tube between said throttle and said engine, said last named Venturi tube being clamped between the carbureter and the pipe to the engine.

Inwitnesses whereof I hereunto subscribe my name this 29th day of December, A. D.

DON COLE.