DE1601349B

DE1601349B - Four-stroke internal combustion engine with recharging and flushing of the working cylinder

Info

Publication number: DE1601349B
Authority: DE
Inventors: Antonin Dipl.-Ing. Prag Richter
Original assignee: Ustav Pro Vyzkum Motorovych Vozidel, Prag

Description

gleichen Durchströmquerschnitten F', F" (s. Fig. 1) oder mittels einem gegenüber dem Gehäuse-Einlaßkanal 10 um das Maß m versetzten Querkanal 16 (s. F i g. 3) erzielt.the same flow cross -sections F ', F " (see FIG. 1) or by means of a transverse channel 16 (see FIG. 3) which is offset by the amount m with respect to the housing inlet channel 10.

Diese Ausbildung gewährleistet, daß im Verlauf eines Arbeitszyklus in den Zylinderraum 4 in den unteren Totpunktlagen des Kolbens 1 zum Ende des Saughubes eine volle Menge der Druckluft eindringt, wogegen zum Ende des Expansionshubes lediglich eine solche Menge der Druckluft hineingelangt, wie sie zur Spülung und Kühlung der Zylinder, insbesondere zur nachträglichen Oxydation der Auspuffgase direkt an der Stelle ihrer Entstehung, nötig ist.This training ensures that in the course of a work cycle in the cylinder chamber 4 in the bottom dead center position of the piston 1 at the end of the suction stroke a full amount of compressed air penetrates, whereas at the end of the expansion stroke only such an amount of compressed air gets in, as they are used for flushing and cooling the cylinder, especially for subsequent oxidation of the Exhaust gases directly at the point where they arise, is necessary.

Die Zuführung der atmosphärischen Luft zum Steuerorgan 2 und zu den einzelnen Zylinderräumen 4 erfolgt über Saugkanäle 17, welche direkt im Zylinderblock 12, Zylinderkopf 20 und Kopfdeckel 21 vorhanden sind und an welche die nichtgezeichnete Sammelrohrleitung des Luftfilters anschließt.The supply of the atmospheric air to the control element 2 and to the individual cylinder chambers 4 takes place via suction channels 17, which are located directly in the cylinder block 12, cylinder head 20 and head cover 21 are available and to which the collecting pipe (not shown) of the air filter connects.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

1 2 stroke the inlet of the full amount of compressed air Patent claims: enables, whereas at the end of the expansion stroke only such an amount is admitted as it

1. Four-stroke internal combustion engine in which the cylinder is used to flush the cylinder, but in particular for Main inlet to the working cylinder one of a 5 subsequent oxidation of the exhaust gases, is necessary. j Has camshaft controlled valve, by From Patent No. 11662 of the Office for

that the charge occurs during the suction stroke, it is an invention and patent in East Berlin, as well as additional openings in the cylinder wall that are known in an internal combustion engine with only one valve from the working piston near the bottom dead center as a control element for the gas exchange, which is exposed , and by the rotary valve switched on towards the end of the io, the fresh air supply line ^; Intake stroke a pre-compressed amount of recharge air to be driven by the camshaft,
Towards the end of the expansion stroke a vorver- Furthermore it is known (USA.-Patent dense scavenging air quantity is admitted, whereby 1454 934), the overflow of the charge in which the working piston with its underside forms the charging cylinder and the inlet to the pump chamber and control pump A control element is provided in the suction line to the pump 15 the rotary valve with a pen space offset by 180 ° to provide flow cross-sections,
characterized in that the part of further developments of the invention result from the camshaft control member (2) as the subclaims.

Rotary valves offset from one another by 180 ° ^ The subject of the invention is characterized by an execution

Opening positions different flow through 20 approximately example illustrated in the drawing. It

releases cross-sections. indicates

2. Internal combustion engine according to claim 1, there Fig. 1 is a longitudinal section through a with Frernddurch characterized in that the through-flow cross-ignition working internal combustion engine, | Sections in a known manner through radial Aus Fig. 2 a cross section along the line BB in recesses (9 ', 9 ") in the rotary valve body formed 25 Fig. 1,

det are. Fig. 3 each a detailed section through another

3. Internal combustion engine according to claim 1, there execution of the control member with an opening in characterized in that the through-flow transverse position during reloading and flushing of the cuts through a by a dimension (m) to the rotary working cylinder.

axis offset transverse channel (16) are formed. 30 The internal combustion engine working with spark ignition is for reloading and flushing the working cylinder with a known differential piston 1 and a control element 2 for admitting the compressed air. Part 3 of the differential 35 piston with a larger diameter forms the working piston, while the part 5 with relative to

The invention relates to a four-stroke internal combustion cylinder with a smaller diameter, the pump chamber 6 machine where the main inlet is limited to the working cylinder. The control element 2 is in a sliding guide 7 the valve of the camshaft 8 controlled by a camshaft is formed in the recesses has, through which the charge is incorporated during the suction 40 9 ', 9 ", by means of which two stroke enters, as well as additional openings in the cylinder, the passage for the air in one work cycle the wall that opens or closes from the working piston near the lower one. The recesses come with Dead center are exposed and by the end of the inlet channel 10 in connection, which in the of the intake stroke a pre-compressed amount of recharge air, between the cylinder block 12 and the cylinder *

towards the end of the expansion stroke a pre-compressed 45 sleeve 13 housed annular space 11 opens. The ring chamber 11, which forms the charge pump in the cylinder block and piston with its underside is formed in the cylinder liner, is via two rows of control slots with the pump chamber 6 of the differential member in the suction line to the pump chamber is provided. piston connected, of which the inlet slots 14 opposite the prior art known from German patent 50 at the lower and the outlet slots 15 at the upper 566 735 the four-end of the annular space 11 is arranged.
Cycle internal combustion engine according to the present invention, the system of these slots calls for a progressive invention, which is based on the task of simplifying the con-air rotation, which at the exit of the construction structure of the internal combustion engine, similar to Rota, which is substantially dense air in the cylinder chamber 4, and to complete its mode of operation - 55 has a sense of motion, like that in the cylinder, e.g. B. come through, characterized in that the fuel of the camshaft, which is sucked in as part of the screw suction channel 22, is designed as a rotary air mixture. For this purpose, the tangential slides are arranged in opening slots that are offset from one another by 180 ° in such a way that the lower slot positions release different flow cross-sections row 14 with respect to the upper row 15 of slots. The technical progress achieved is based on ⁶ ° opposite tangential inclination, so that the fact that the control element through suitable training fuel-air mixture in both rows of slots has the training and adaptation of part of the camshaft of the same flow sense.

Internal combustion engine is designed, whereby additional order in the internal combustion engine with the loading and

borrowed drive parts for the control element are omitted. Wash pump to prevent the energy loss, is a addition, the training of the invention enables ⁶ 5 differentiation between loading and flushing of the extension of the control member such differentiation cylinder space 4 is provided by the compressed air, the amount of the working cylinder imported The differentiation either by means of two compressed air that the control member to the end of the suction asymmetrical recesses 9 ', 9 "with un-