US1638289A

US1638289A - Gaseous-fuel pump for internal-combustion engines

Info

Publication number: US1638289A
Application number: US738418A
Authority: US
Inventors: Everett R Burtnett
Original assignee: AUTOMOTIVE VALVES CO
Current assignee: AUTOMOTIVE VALVES CO
Priority date: 1924-09-18
Filing date: 1924-09-18
Publication date: 1927-08-09
Anticipated expiration: 1944-08-09

Description

Aug. 1927. 1,638,289

E. R. BURTNETT GASEOUS FUEL PUMP FOR INTERNAL COMBUSTION ENGINES I Filed Sept. 18, 1924 IIIIIIIIIIIIIII/IIIIA 4 "NIH IIIII of I um Patented Aug. 9, 1927.

emits!) STATES RATE T IC EVERETT R. BURTNETT, OF LOS ANGELES, CALIFORNIA, ASSIGNOR, BY'DIRECT AND MESNE ASSIGNMENTS, TO THE AUTOMOTIVE VALVES 00., OF LOS ANGELES, CALI- FORNIA, A VOLUNTARY TRUST.

GASEOUS-FUEL PUMP FOR INTERNAL-COMBUSTION ENGINES.

Application filed September 18, 1924. Serial No. 738,418.

My invention relates to gaseous fuel pumps for internal combustion engines of the particular type disclosed in my co-pending application for patent filed November 22, 1923, Serial No. 676,280, theprincipal object of my invention being to provide an internal combustion engine having a precompression" port for the separately formed piston valve cylinder and further to form in said head-a recess that serves as a combined head and support for the piston valve cylinder and, further to form in said head a'recess that serves as a connection and'common clearance chamber for the chambers within the pumping and piston valve cylinders and said head, also being provided with an unrestricted outlet opening for the gaseous fuel that is compressed within said pumping cylinder.

With the foregoing and other objects in view, my invention consists in certain novel features of construction and arrangement of parts that will hereinafter be more fully described and claimed and illustrated in the accompanying drawings in which:

Fig. 1 is a vertical section taken through the center of an internal combustion engine embodying my improvements.

Fig. 2 is a horizontal section taken approximately on the line 22 of Fig. 1.

Fig. 3 is a top plan view of a-portion of an engine of my improved construction.

Fig. 4-. is a vertical section taken approximately on the line 4-4: of Fig. 1.

Referring by numerals to the accompanying drawings, 10 designates a cylinder block having a pair of pumping or pre-compres sion cylinders 11, and two or more combustion cylinders 12.

Ordinary pistons such as 13 are arranged for operation within the various cylinders and all of said pistons are'connected in the usual manner by connecting rods such as 14, to a crank shaft 15, a separately formed head block 16 is secured in any su'itable manner to the upper end of thecylinder block 10 and closes all of the chambers therein and formed integral with the side of said head block, I

directlyopposite to the pumping cylinders 11 is a lateral extension 17.

' The under face of this lateral extension machined-or finished at the same time the under face of head block 16 is machined or finished and secured in any suitable manner to the under face of said extension are the upper ends of depending piston valve cylinders 18. I

The axes of these valve cylinders are in transverse alignment with the axes of the respective pumping cylinders 11 and formed in the under sides of the block 16 and its lateral extension 17 are transversely disposed pockets or recesses 19 that connect the chambers of the pumping cylinders with the 1e. spective piston valve chambers and consequently forming common-clearance and compression chambers.

Formed through the side of head block 16 and leading from'each pumping chamber, a free unrestricted outlet duct 20 and lead-' ing from each duct outwardly and downwardly to the intermediate portion of the adjacent combustion cylinder is a compressed gaseous fuel transfer duct 21. v I

Block 16 and lateral extension 17 are formed with cooling fluid circulation chambers Athat entirely overlie the chamber 19 outlet duct 20.

Formed through the walls of the piston valve cylinders 18 are gaseous fuel inlet ports 22 and arranged for operation within each of said cylinders is a piston valve 23.

These piston valves are connected by suitable connecting rods 24 to a crank shaft 25 that is arranged for rotation in suitable bearings in a housing 26 and which latter is disposed at the lower ends of the cylinders Crank shaft 25 is driven by suitable means, at the same speed as crank shaft 15.

vWhile the engine that is provided with my improvements is in operation, the piston valve 23 moves downward to uncover and open the ports 22 as the corresponding pumping piston moves downward in its chamber and as a result-a charge of gaseous fuel is drawn downward in its chamber and,

as a result a charge of gaseous fuel is drawn int-ojthe piston valve chambenthe common clearance chamber 19 and the chamber of the pumping cylinder.

As the pumping piston passes low center the corresponding valve moves upward into position to close inlet ports 22 and on the upward stroke of the pumping piston, the gaseous fuel charge is compressed and forced through the corresponding transfer duct 21,, when the inlet ports of the corrc spending; combustion cylinder are open.

Thus it will be seen that I have provided, in a two stroke internal combustion engine, a relatively simple, practical and efficient arrangement of parts that includes a main pumping or precompression cylinder, a separately formed gaseous fuel inletvalve cylinder, a separately formed head for said pumping: cylinder, said head having an eX tension that serves as a head for the valve cylinder and which head is provided with a clearance chamber that is common to the piston valve chamber and, the chamber within the pumping cylinder and. also being provided with an unrestricted outlet from the chamber within the main pumping cylinder.

Minor changes in the size, form and construction of the various parts of my improved internal combustion may be made and substituted for those herein described without departing from the spirit of the invention, the scope of which is set forth in the appended claims.

I c aim as my invention:

1,. In a pump for internal combustion engines, a separately formed gaseorv: fuel pumping cylinder, a gaseous fuel inlet valve cylinder, a separately formed head for said. cylinders, said head being provided with a recess that forms a common clearance chamher for the chambers within said pumping and valve cylinders and said head being provided with an unrestricted outlet duct that leads from the chamber within said pumping cylinder.

2.111 a pump for internal combustion engines, a separately formed gaseous fuel pumping cylinder, a gaseous fuel inlet valve cylinder, a separately formed head for said cylinders, said head being pro vided with a recess that forms a common clearance chamber for the chambers within said pumping; and valve cylinders, said head being provided with an unrestricted outlet duct that leads from the chamber within sa d pumpingcylinder. said valve cylinder being provided with a gaseous fuel inlet iorf; and a piston valve arranged for operation within said valve cylinder for controlling said inlet port.

engines. it separately formed gaseous fuel pumping cylinder, a gaseous fuel inlet valve cylinder, at separately formed head for said cylinders, said head being provided with a which piston valve cylindenx. ln a pump for internal combustion recess that forms a common clearance chamher for the chambers Within said pumping and valve cylinders, said head being provided with an unrestricted outlet duct that leads from the chamber within said pumping cylinder, said valve cylinder being provided with a gaseous fuel inlet port, a piston valve arranged for operation within said valve cylinder for controlling said inlet port and a piston aranged for operation within said pumping cylinder.

l. In a pump for internal combustion engines, a separately formed gaseous fuel pumping cylinder, a separately formed head therefor, a gaseous fuel inlet valve cylinder, said head having an integral lateral extension that serves as a head for said valve cylinder, said head and extension having a recess that provides a common clearance chamber for the chambers within the pump ing cylinder and valve cylinder and said head being; provided with an unrestricted outlet for the gaseous fuel that is compressed within the pumping cylinder.

5. In a pump for internal combustion engines, a separatelyformed gaseous fuel pumping cylinder, a separately foru'ied head therefor. a gaseous fue inlet valve cylint er, said head havinga lateral extension that serves as a head for said valve cylinder, said head and extension having a recess that pro vides a common clearance chamber for the chambers within the pumping cylinder and valve cylinder, said head being provided with an unrestricted outlet for the gaseous fuel that is compressed within the pumping cylinder, said valve cylinder being provided with aninlet port and a piston valve arranged within said valve cylinder for controlling said port.

6. In a pump for internal combustion engines. a pair of pumping cylinders, a separately formed cylinder head closing the head ends of said pumping cylinders, said head having a lateral extension within which are formed laterally disposed ducts that lead from the chambers within the pumping cyL inders and open outwardy on the 'und face of the lateral extension of the head, the underface of the lateral evtension'oi the head lying in the same plane with and being a continuation ofthe under surface of the main body portion of the head. separately formed piston valve cylinders secured to and depending from the nnderface of said lateral cvtcnsion and the chambers within communicate respectively with the open outer ends of the laterally disposed ducts in said separately formed head. r

In testimony whereof I aflix my signature.

EVERETT R. BURTNETTY