SU717381A1 - Internal combustion engine exhaust manifold - Google Patents

Description

(54) EXHAUST ENGINE INTERNAL COMBUSTION ENGINE

one

The invention relates to the field of mechanical engineering, namely engine building, in particular to exhaust devices for internal combustion engines with a pulsed gas turbine inflating.

Exhaust devices for an internal combustion engine with a pulsed gas turbine supercharger are known, which contain an internal rectilinear pipe provided with openings for connection to a cylinder group with non-overlapping exhaust gases and an external pipe enveloping it equipped with inlets and connected to another group of cylinders with non-overlapping chassis release 1.

However, if the optimal sequence of flashes in the cylinders is such that the cylinders connected in the inner and outer tubes alternate, then to connect to the inner tube of the corresponding group of cylinders and outer tube, it is necessary to perform bypass windows that must be connected by branch pipes to the inner tube windows. These pipes, blocking the annulus, increase the hydraulic resistance of the exhaust device.

The purpose of the present invention is to reduce the hydraulic resistance of the exhaust device with an optimal sequence of flashes in the cylinders.

This is achieved by the fact that the inner pipe is curved and its windows are adjacent to the bypass windows of the outer pipe. FIG. 1 shows a longitudinal section.

exhaust device in FIG. 2 is a cross-section through the bypass windows, and in FIG. 3 - the same along the inlet apertures m. The exhaust device consists of an outer pipe 1 and an inner pipe 2. The diameters of the pipes are chosen on the basis of providing

the required bore of the inner tube 2 and the annular space 3. On the outer tube there is an inlet 4 and 5 for connecting it to a group of cylinders with non-overlapping phases

exhaust and bypass ports 6 and 7 for exhaust by-pass from another group of cylinders with non-overlapping exhaust ports to the windows 8 of the inner pipe 2. This pipe is bent in a plane passing through the axes of the inlet openings 4 and 5 and the bypass windows 6 and 7, thus that it is removed from the inlet ports 4 and 5 and is adjacent to the overflow ports 6 and 7, which coincide with the windows 8 of said inner tube. To prevent gas leaks from one pipe to another, they can be, for example, welded around the perimeter of windows b, 8f and 7, 8.

When the engine is operating, at the moments of exhaust emission from the cylinders, in the inner tube and in the annular space, out-of-phase pressure pulses are generated, propagating through them to the gas turbocharger.

Since there are no nozzles in the annular space for supplying gas to the inner pipe, the flow area of the specified space increases and the hydraulic resistance to exhaust is reduced.

Claims (1)

Invention Formula An exhaust device for an internal combustion engine with a gas turbine impulse supercharging, comprising at least one inner pipe provided with openings for connection to a cylinder group with overlapping exhaust gases and an outer pipe surrounding it, connected to another group of cylinders with overlapping exhaust phases and provided with intake ports and bypass oxides for supplying gases to the inner tube, characterized in that, in order to reduce the hydraulic resistance of the exhaust when The maximum oiifpetfHoetri flares in the cylinder {) ah, the inner tube is curved and its windows are adjacent to the overflow windows of the outer tube. Sources of information, received by YO attention during the examination 1. USSR author's certificate No. 196483, cl. F 01 N 7/10, 1965.  Fig.Z