US 1528715 A
Abstract available in
Claims available in
Description (OCR text may contain errors)
Mar. 3, 1925.
ENGINE VALVE Filed Feb. 11, 1922 2 Sheets-Sheet 1 Patented Mar. 3, 1925.
UNITED STATES WALTER WHITTEN, OF SCHENECTADY, NEW YORK.
Application filed February 11, y1922. Serial No. 535,715.
To all whom it mayy concern: o
Be it known that I,A VALTER VVHITTEN, a citizen of the United States, and a resident of Schenectady, in the county of Schenectady and State of New York, have invented a new and Improved Engine Valve, of which the `following is a description.
My linvention relates to engine valves either internal combustion engines, locomotives,for other types of engines for controlling the motive fluid to and from multiple cylinders- The invention will be described in connection with the embodiment of the invention in a valve orinternal combustion en gines and arrangedfto function by rotary movement. The general object of the invention is to provide a novel engine valve of the indicated type improved in various particulars with the result that valve grinding of an internal combustion engine for example is made unnecessary and whereby the motive fluid will be warmed bef-ore entering the ignition chamber. v
A more specific object of the invention is to provide an embodiment of the invention simple in construction involving a small number of parts.
The nature of the invention and its distinguishing features and advantages will clearly appear as the description proceeds.
Reference is to be had to the accompanying drawings forming a part of this speciication, it being understood that the drawings are merely illustrative of one example of the invention.
Figure 1 1s a longitudinal section of a valve embodying my invention, the irregular line of the sectionbeing indicated by the line 1 1, Figure 3;'
Figures 2, 3, 4 and`5 are cross sections respectively on the lines 2 2, 3 3, 4 4and 5 5 of Figure 1;
Figure 6 is a view similar to Figure 1 but illustrating the valve in a diiferent position;` l i Figure 7 is a cross section on the line 7 7, Figure 6;
Figure 8 is a detail in cross section 'illustrating a modified 'arrangement ing for taking up wear; l
Figure 9 is a cross section showing a furthermodiiication off'- the casing designed to take up wear.
In carryingy out my invention in accordof the cas' let 15.
ance with the illustrated example, a valve casing 10 is provided, here shown as cylindrical and having ports 11, 11al communieating in this instance with cylinders 12, 12a shown in part, the valve arrangement shown being designed for a two-cylinder internal combustion engine. It will be obvious that any number of cylinders may be employed. e
Within the cylindrical lvalvecasing 10 is a rotary valve 13, the one reduced end 14 having a bearing in the head 10 of the casing and being tubular for the flow of the motive iuid and indicated here as constituting a iluid inlet. The opposite end of the valve 13 is reduced as at 14a and turns in the head 10b oi thecasing 10. At a side of the casing near one end is a discharge 15, it being evident that the inlet and discharge may be reversed. e
From the inlet end 14 the motive fluid, or in the case of a gas engine, the fuel, passes laterallyy from the ports v16 to a chamber 18 in the valve 13 at one end. From the chamber 18 the fluid passes longitudinally through the-body ot the valve,
there being formed for the purpose a plurality of small passages 17 which communicate with a chamber 18aL at the opposite end of the valve 13 and from the chamber 18, the fuel fiows into longitudinal passages 19, the fuel thus passing lengthwise through the valve in one direction and returning through the passages 19. The passages 19 communicate with ports 20 and 21 adapted to intermittently beibrought alternately into register with the ports 11 and 11a and therefore in communication lwithl the respective cylinders 12, 12a.L ln Mthe valve 1 3, 1800 from the ports 20, 20? are lateral ports 21, 21a, the ports 20, 2Oa being for the live fiuid and the ports 21, 21a for the exhaust. The
ports 21 communicate with the hollow interior 22 of the valve and then outward through ports 23 in the reduced end 14a of the valve and into a chamber 24 at that end of the valve opposite the inlet 14. From the chamber 24 lead longitudinal passages 25 through the valve to a chamber 26 in the casing 10 at the inlet end,l saidchamber 26 communicating with the exhaust out- With the described arrangement as the valve is given movement the inlet port 2O and exhaust port 21 will alternately register lwith the cylinder 12 while the live port 20" and the exhaust` port 21n will alternately register with the port 11@L to establish communication with the cylinder 12a. In Figure 1 the valve is in a. position for the cylinder l2 to exhaust through port 21 and central chamber 22 through ports 3, chamber 24, passages 25, and chamber 2G to the exhaust- 15. A movement of the valve 13 from the position shown in Figure 1 to the position shown in Figure 6 will cut oi'll the port 11 and cylinder 12 from connection with the exhaust port 2l and also will cut oli communication between said cylinder 12 and the inlet port 20. IVhile the cylinder 12 is thus cut ott after exhausting, the cylinder 12a will be brought into connnunication With the port 2la and exhaust chamber 22 and therefore With the ports 23, chamber 24, passages 25, chamber 26 and exhaust 15. A further turn of the valve Will bring the inlet port 2O into communication with the cylinder 12 and further movement will eventually bring the inlet 2Oa into communication With the cylinder 12a. The passing of the exhaust forward and back longitudinally of the valve as described gives a muliling effect in addition to utilizing the exhaust to heat the incoming fluid.
The numeral 31 indicates a pinion to constitute-one means for giving movement to the valve 13 and the numeral 32 indicates the inlet pipe coaxial with the reduced end 14 of the valve 13.
In Figure 8 I have indicated the adj acent portions of a casing 10c split longitudinally,
there being interposed a triangular piece 2'? between the meeting edges to permit of taliing up slack bv means of a bolt 29 and nur 30, the bolt passing through lugs 28 adjacent the respective edge portions of the casing 10.
The head 1Sc of chambers 1S. 18a may be detachably secured by anv suitable means such as bolts 33.
In Figure 9 a Wedge piece 27- is employed, similar to the piece 27 except that it has a tapered edge portion, the remaining portion having approximately7 parallel sides, the casing being indicated by the letter 10@ It Will be noted that the passages, 17, 19 and 25, extend at both ends through the valve to present open ends accessible for a thorough cleaning of the passages when the heads 18 are removed.
I would state in conclusion that While the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the exact details herein illustrated, since, manifestly, the same can be considerably varied Without departure` from the spirit of the invention as defined in the appended claims.
I-Iaving thus described mv invention, I claim:
.1. A rot-ary valve lia-ving a central bore, said valve outward from said bore. having longitudinal fluid inlet passages and having also longitudinal exhaust passages outward of said bore and parallel with said iirstmentioned longitudinal passages to give up heat from the exhaust products to the incoming iiuid, said longitudinal exhaust passages extending through the valve to present open ends in communication at one end with said bore and at the opposite end with the exhaust outlet, the valve furthermore having lateral ports to communicate With cylinders, said ports adapted to communicate respectively ivith the said inlet passages and with the central bore of the valve.
2. In a valve, a casing having an inlet and an exhaust, and a valve in said casing having ports adapted to communicate with the ports of a plurality of cylinders, the valve furthermore having passages leading longitudinally through the same from end to end thereof, and return passages, as Well as live ports communicating with the return passages, the valve furthermore having lateral exhaust ports and a longitudinal exhaust passage leading to an end of the valve, and exhaust passages leading from said end through the valve to the opposite end communicating with the Erst-mentioned exhaust passages and with the exhaust of the casing, and means to give movement to the valve to alternately register the respective live ports and exhaust ports With the respective cylinders.
3. A valve of the class described including a casing having ports adapted to communicate with the ports of a plurality of cylinders, said casing having an inlet and a discharge, a valve in said casing having a plurality of fluid-heating passages extending longitudinally through the valve from the inlet end to the opposite end, said valve having chambers at the inlet and outlet ends communicating With said heating pas-v sages and having return passages from the chamber opposite the inlet, the valve having live ports communicating with said return passages and adapted to alternately connect the cylinders with the ports of the casing and said valve having exhaust ports adapted to intermittently register with iirst-mentioned ports of the casing, there being au axial exhaust passage in the valve and a chamber at one end of the casing with Which said axial exhaust passage communicates, and longitudinal exhaust passages from the lastmentioned chamber to the opposite end of the valve and communicating with the exhaust of the casing.
l. A valve of the class described including a casing having ports adapted to communicate with the ports of the cylinders of an engine, and a valve in said casing, said valve having live ports and having passages adapted to communicate with said ports of the casing, the valve furthermore having llO the same, avalve in said casing having ports and having passages extending forward 10 and back longitudinally through the valve and communicating With the said ports of the valve; together Wit-h detachable heads on the valve at the ends of said passages.