US1998725A

US1998725A - Injection engine

Info

Publication number: US1998725A
Application number: US678354A
Authority: US
Inventors: Lang Franz
Original assignee: Lanova Ag
Current assignee: LANOVA AG
Priority date: 1930-12-01
Filing date: 1933-06-30
Publication date: 1935-04-23
Anticipated expiration: 1952-04-23

Description

F. LANG INJECTION ENGINE Original Filed Dec. 1, 1930 April 23, 1935.

Patented Apr. 23, 1935 UNITED STATES PATENT OFFICE INJECTION ENGINE Franz Lang, Munich, Germany, assignor to Lanova Aktiengesellschaft, Vaduz, Liechtenstein My invention relates to a fuel injection internal combustion engine of the type which embodies an air chamber in which fluid is compressed during the compression stroke of the piston and l from which the fluidissues during the working stroke of the piston.

This application is a division of my copending application Serial No. 499,223, filed December 1, 1930, for Fuel injection internal combustion engines.

The instant invention contemplates an improved combustion chamber shape and fuel nozzle air chamber and valve relationship, to the end of obtaining effective mixing of the charge, keeping crude oil from coming between the piston and cylinder walls, and accomplishing simplicity of construction.

My invention is illustrated in the accompanying drawing, in which Figure 1 is a vertical axial sectional view of those portions of the engine with which my invention is concerned;

Figure 2 is a vertical axial sectional view taken at right angles to the plane of Figure 1; and

Figure 3 is a horizontal sectional view taken on the plane of the line EF of Figures 1 and 2, looking downwardly, the lines AB and C-D indicating the planes on which Figures 1 and 2, respectively, are taken.

The drawing shows the cylinder, the piston which reciprocates in the cylinder, and the head. The fuel nozzle is shown at a, the air chamber at b, the combustion chamber at c, and the inlet and outlet valves at d and 6, respectively.

The combustion chamber 0 formed in the head, is of circular section, in one vertical plane, and the nozzle and air chamber are disposed on opposite sides of the combustion chamber in this vertical plane. The air chamber opening is flared toward the combustion chamber and the wall of this flared opening merges with the circular wall of the combustion chamber in such a way that a pear-shape results in said vertical plane as shown in Figure 2. At right angles to the above mentioned vertical plane, the combustion chamber is rectangular in cross section, as shown in Figure l, and the inlet and outlet passages communicate with the combustion chamber by way of openings in the fiat vertical side walls 1 Claim. (01. 123-32) as is clear from Figures 1 and 3. The inlet and outlet elements lie horizontally and are of elbow formation, as shown in Figure 3, and the stems of the inlet and outlet valves d and 6, respectively, are appropriately mounted in bosses formed with the elbows.

As clearly shown in the drawing, the combustion chamber 0 communicates downwardly with the cylinder over the central portion of the piston, the remainder of the area of the piston top coming fairly close to the head, as shown.

Upon the compression stroke of the piston, fluid from above the piston is compressed in the chamber b, and upon the working stroke of the piston this fluid issues from the chamber at high velocity, the stream of fluid being directed toward the opposite combustion chamber wall from which the fuel injection comes, and the charge is then whirled centrally into the cylinder, as indicated in Figure 2.

Suitable mechanism is of course provided to cause the valves to operate at the proper time in the cycle, and suitable mechanism is of course provided to cause the nozzle 0. to inject fuel into the combustion chamber at the proper time in the cycle, beginning with the final compression.

I claim:-

In an injection engine, a cylinder and a piston operating therein, a combustion chamber of rectangular shape in vertical cross-section and of approximately pear shape in vertical lengthwise section overlying and communicating with the cylinder centrally thereof through a restricted slot-like opening of rectangular shape in plan, the side walls of said chamber being flat and vertical, inlet and exhaust valves mounted coaxially in said side walls on an axis normal to the cylinder axis, an air storage chamber opening into the combustion chamber at the tip end of the latter through a restricted orifice, and a fuel injection nozzle opening into the combustion chamber at the opposite end of the latter. said nozzle being disposed coaxially with said orifice on an axis normal to the cylinder axis, the common axis of said valves and the common axis of said nozzle and said'orifice being disposed in a common plane substantially normal to the cylinder axis.

FRANZ LANG.