US1364065A - Ignition means and method - Google Patents

Description

D. F. ASBURY.

IGNITION MEANS AND METHOD.

APPLICATION FILED FEB. I9, I918.

1364,065. Patented Jan. 4,1921.

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UNITED STATES PATENT OFFlQE.

DORSEY FROST ASBURY, OF WASHINGTON, DISTRICT OF COLUMBIA.

IGNITION MEANS AND METHOD.

Application filed February 19, 1918.

To all whom it may concern:

Be it known-that I, DORSEY F. AsBURY, a citizen of the United States, residing at Washington, District of Columbia, have invented certain new and useful Improvements in ignition Means and Methods; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to means and method for igniting the charges of explosive engines and has for its objects to assure ignition of a charge regardless of an oil flooded condition of the cylinder, poor compression or poor grade of gas; to provide the cylinder with an elongation the outer end of which constitutes the gas inlet and igniting the charge at the inlet end of the elongation with ignited gas of a previous explosion and at the other end of the elongation with an electric spark; and to provide the cylinder with an elongation the outer end of which constitutes the gas inlet and igniting the charge at the inlet end of the elongation with ignited gas of a previous explosion and thereby raise the compression, and then igniting the charge at the other end of the elongation with an electric spark; to produce the initial explosion of a plural cylinder engine electrically and then continue the explosions by transferring ignited gas from cylinder to cylinder.

My improved means and method of ignition is applicable to all kinds of explosive engines irrespective of their construction or the number of cylinders employed, but for the purpose of disclosure I will show and describe my invention as applied to a four cylinder four stroke cycle type, it being understood that the invention is in no way limited to this type or number of cylindersand that it permits of wide variation without departing from its scope.

In the drawings chosen to illustrate my invention, the scope whereof is set forth in the claims.

The figure is a longitudinal section of a four cylinder four stroke cycle explosive engine embodying my invention.

Referring now particularly to the drawings, A indicates the engine case casted to form cylinders B, C, D and E. The case A Specification of Letters Patent.

Patented J an. at, 1921.

Serial No. 218,088.

includes a removable top casting F shaped to form explosion chamber elongations, those associated with the explosion chambers of the cylinders B and E being indicated at 10 and 13, respectively. These elongations lead to a common valve chamber ll included in the top F and extending vertically through the latter. Mounted in the case A is a crank shaft 15 and operatively mounted in the cylinders B, C, D and E are the usual pistons 16, 17, 18 and 19 respectively which latter are connected respectively with the crank shaft 15 by connecting rods 20. Rotatably mounted in the chamber 14: is a valve G provided with an exhaust port 21 and a supply port 22 both of which open through the side of the valve. This valve during its rotation controls the supply and exhaust of gases in the manner described and claimed in my co-pending application, filed J an. 1, 1918, Serial No. 210,280.

The arrangement of the elongations of the explosion chambers around the valve chamber 14 is such that an explosion of a charge is always produced by ignited gas collected from the last explosion and such ignited gas is moved a minimum distance in order to effect its transfer from one chamber to another. By this arrangement I secure a very quick delivery of the ignited gas after its collection and avoid any possibility of it cooling to an extent that would destroy its effectiveness as an igniting medium.

The cylinders B, C, D and E have associated therewith respectively spark plugs 36, 37, 38 and 39 of an electrical ignition system, the use of which in conjunction with my system of gas ignition will produce certain advantageous results that will hereinafter appear, but it should be understood that such a combined system of ignition is not necessary to the fundamentals or my invention as complete effective ignition will be had by the use of exploded gas as an igniting medium without recourse to electrical ignition other than for the purpose of producing the initial explosion. However, by placing the spark plugs at the inner ends of the elongations of the explosion chambers and delaying the operation of respective plugs until after ignited gas has been introduced into the related elongation I materially reduce the time of complete combustion of the charge for the reason that the charge is ignited at two points and the spark plug is operated after the compression has been raised by the ignition of the charge by the gas of a previous explosion. By shortening the time of combustion of a charge in this manner I eliminate the necessity of advancing and retarding the spark. It will be noted that the ignited gas is introduced into the elongations of the explosion chambers at their ends nearest the gas supply and for this reason the ignited gas will always be brought into contact with the best mixture and this condition, whether electrical ignition is or is not utilized, will assure ignition of the charges irrespective of an oil flooded cylinder poor compression or poor grade of gas.

ssuming that the operation of the engine has been instituted electrically and the electric ignition then cut out, the cylinder D is firing and during high compression therein the ignited gas will collect in the cavity 36 and be transferred by the movement or" the valve G to the cylinder E where it will ignite the charge in the latter. From this explosion a supply of ignited gas will be collected in the cavity 36 and be transferred by valve movement to cylinder C to explode another charge and so on during the operation of the engine.

1. In an explosive engine having an elongated explosion chamber, means for igniting the charge at one end of the elongation, and means for subsequently igniting the charge at the other end of the-elongation.

2. In an explosive engine having an elongated explosion chamber, means for igniting the charge at one end of the elongation by products of combustion of a previous explosion and at the other end by an electric spark.

3. In an explosive engine having an elongated explosion chamber, means for igniting the charge at one end of the elongation by the products of combustion of a previous explosion and thereby raising the compression in said chamber, and an electric sparker for subsequently igniting the charge at the other end of the elongation.

In testimony whereof I affix my signature in the presence of two subscribing Witnesses.

DORSEY FROST ASBURY.

Witnesses:

EDITH STOWELL, IRE-NE L. LEROI-I.

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