US1014270A - Explosion-engine. - Google Patents

Description

J. G. UTZ.

EXPLOSION ENGINE.

APPLICATION FILED APR. 9, 1909.

Patented Jan; 9, 1912.

E 3 0 g w/vvw/z z A "main port to correspond with variations in- TED STATES PATENT forrrca JOHN G. UTZ, 015 DETROIT, MICHIGAN, 'ASSIGNlJR TO CHAIMERS-DETROIT 'MOTOR OOMPANY, OF DETROIT, MICHIGAN, A CORPORATIO N OF MICHIGAN- EXPLOSION-ENGINE.

. Specification of Letters Patent.

Application nieaii rne, 1909. Serial No. 489,012.

To all whom it may concern: Be it known that 1, JOHN G. U'rz, a citizen of the United States of America, residing at Detroit, in the county of lVayne and State of Michigan, have invented certain new and useful Improvements in Explosion- Engines, of which the following is a specification, reference being had therein to the accompanying drawings.

The invention relates to explosion engines of that type in which an augmented charge of the explosive mixture is obtained by the introduction of air compressed in the crank case' to supplement the charge admitted through the main admission port.

It is one of the objects of the invention to provide means for varying the power by the controlling of the augmenting charge; further, to automatically vary the richness of the explosive mixture admitted through the the augmenting charge of air; further, to

.- provide means'for introducing a volume of air in excess of the displacement of a single piston; and, further, in various features of construction as hereinafter set forth.

The drawing is a vertical central cross section through an engine embodying the invention.

A is the engine cylinder, B the crank case, C the piston, D the crank, and E the pitman rod of an engine of any suitable construction.

F is the admission port for the explosive mixture, and G the exhaust port for theproducts of combustion. In addition to these ports, the engine is provided .With means for admitting air into the crank chamber, where it is compressed, and for transferring the compressed air to the cylinder above the piston where it augments the explosive charge. Various constructions may be employed for accomplishing this purpose, but, as shown, both the transfer port and the air admission .portinto the crankcase, as well as the main inlet port F and exhaust port G, are controlled by a pair of'cylindrical valvesleeves H H surrounding the piston. These sleeves are reciprocated by pitmen I It connected to latorally-projecting arms J Jf-on the sleeves and engaging cranks or eccentrics K on a rotary shaft driven from the main crank shaft by a suitable gear train L. Thus the sleeves are'operated timed relation to .the move- PatentedJan.'9,1912.

mentof the piston, and the arrangement is such that all'of-the various ports-are opened and closed in the desiredorder. I

The explosivemixture is formed by 5 carbureter or other suitable device,--whi-:h is

connected by the conduit M withthe' mam admission ort FL It is, however, necessary to vary the'richness of this mixture to correspond with the amount of air transferred,"

from the crank case. 'T'husjif the'I-volume of air transferred is varied, itisessential that the richness of the carburetedair should be correspondingly varied. --I.. have therefore provided a controlling device: by which the l richness of the mixtureentering through the. port F is automatically varied in accord-.

duitMleading to the port F and O'Of. are butterfly valves in the respective branches.- Each of these branch conduits rovided with a'nozz'le for admitting the and are adjusted so as to discharge different uel, and these nozzle P. P are of'ditferent capacity,

quantities of thefuelin the same interval of time. The compressed air. for augmentmg the charge is' transferred through aconduit Q, which is opened by the registration therewith of ports R in the sleeves H H" when the piston is, at the lower-end ofitsstroke. This will permit-the compressed I air in thecrank case to pass through the conduit ,6) and ports R Rinf above the plston, where it bejcommmthe cylinder gled with the mixture introduced through"- "the conduit M and port F. The conduit Qis provided with a valve preferably a butterfly valve S, and thisis connected by suitable mechanism such as the rod T indicated in dotted lines with the valves 0 O" in .the branch conduits N N{ The arrange ment is such that whenever the valve S is closed the valve 0 will also be closed, and the fuel introduced into the air current is restricted to that discharged from the noz zle P", which is of lesser capacity than the nozzle P. On. the other hand, if the rod T is adjusted toopen'the valve S the valve 0, will be simultaneously opened, and the valve 0' closed, which will throw into action the nozzle P having the greater capacity. Thus the richness of the mixturegill be altered to 7 correspond to the volume of. air, passlng i through the conduit Q.

The air compressed in the crank case may i be employed for the double purpose of augmenting the explosivecharge and for scavenging the cylinder to clean out the remnant of the burned gases after the scavenging stroke of the piston. The air for augmenting the charge is transferred through the ports R R in the sleeves H H', as has been described, but the movement of these sleeves is such that these ports only come into registration once in each cycle. An-

other port U is arranged in the sleeve H which is adapted to register with the port R and conduit V, also connecting with the crank case and having the controlling valve W therein which is adjustable independently of the valves S, O and O. The ports R R, U R-register with their respective conduits alternately, and are 360 apart in the cycle, so that 'the air transferred through the conduit V and ports U R will be admitted to the cylinder at the proper time to scavenge the burnt gases the amount of air admitted depending upon the adjustment of the valve W. Variations in the control may lie obtained by alteration in the relative adjustment of the valves W and S, so that a larger portion of the air compressed in the crank .case will be used at one time for augmenting the explosive charge, or at another time may be used for scavenging. Also the valves Wand S may beadjusted to completely close the passages V and Q.

i What I claim as my invention is:

1. In an explosion engine, the combination with means for introducing an explosivecharge into the'explosion chamber, and means for introducing a variable volume.of compressed air to augment said explosive charge; of means automatically operating, upon the variation of the volume of said augmenting air, for proportionately varying the richness of the explosive mixture.

2. In an explosion engine, the combination with a cylinder and a piston, of a crank case forming a compression chamber, means for admitting an explosive mixture intofor said transfer means adjustable to admit air to the cylinder either for scavenging 9 1; augmenting the explosive charge, said means being also adapted to completely cut-off communication between the transfer means and the engine cylinder.

4. In an explosion engine, 'the combination of means for introducing an explosive charge into the explosion chamber, means. for introducing a volume of compressed air to augment said explosive charge, a valve controlling each of said means, and a connection between said valves wherebyupon the adjustment of one of said valves the other is automatically and correspondingly adjusted.

' In testimony whereof I afiix my signature in presence of two Witnesses.

JOHN G. UTZ.

Witnesses:

.J. H. Nonamo'ron,

H. L. BILL.

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