DE1924656U - SWIRL CHAMBER WITHOUT CHANGE IN DIRECTION FOR ROTARY PISTON DIESEL ENGINES. - Google Patents

Description

bg / kr

i-IascMnenfabrik Augsburg-Nürnberg
Corporation

Nuremberg

Mraberg, 13 March 1964

Vortex chamber without change of direction

The invention relates to @ in @ swirl chamber for rotary piston diesel engines. Such swirl chambers are in the Hegel provided with tangential gas channels. Me Air enters the bottle neck-like when it is drawn Muzzle tangentially into the swirl chamber. During the ignition and the subsequent pressure increase in the vortex chamber However, those with fuel Tersetaten can Yerbrenmingsgase only back through the same bottle neck-like inlet opening blow into the main combustion chamber “But Dabti will be the one for them Fogging and good exposure of the air to the fuel necessary air swirl braked or even vice versa. This causes the mixing and evaporation of a rope's The fuel is obstructed. Furthermore, the outflow vortex Density from the vortex chamber in the main free space reduced » The characteristic is based on these two ureaoii @ n "Hail" of the engine, which the high occurring Engine pressures- has the consequence »

The invention aims to avoid these disadvantages by such a supply and discharge of the vortex chamber air, that the two currents cannot interfere with one another. In the case of a vortex chamber, this should be done without a change of direction 22.7545 ./·

for circular piston diesel engines with fuel injection with a housing, 'consisting of a fixed dumbbell, whose lehrbogige inner lateral surface in cross section the Has the shape of a raehrbogigen Spitrochaide and with side parts, the eusamman with the coat an inner space with Limit inlet and outlet channels, which is perpendicular to the Side parts is penetrated by an eccentric shaft whose eccentric is a polygonal piston rotatably its speed in a fixed ratio to the speed the eccentric shaft and a combustion chamber in the housing arranged with a transfer channel, can be achieved in that a circular vortex chamber is provided is with a tangentially arranged inlet channel and an outlet channel arranged concentrically in their center. the The two air flows no longer overlap as in the known constructions, but the air supply The vortex chamber takes place through a separate inlet channel and the air outlet through an equally separate outlet channel. In doing so, © forms in a real and undisturbed air vortex inside the vortex chamber, which is able to to detach the fuel film sprayed onto the walls easily and to vaporize it Fuel consumption also a nail free gp.ng of the engine received,. "" ".-

In terms of construction, it is implemented in such a way that the inlet channel opens into the inner surface area in the direction of rotation approximately before the top dead center and the Aualaßkanal in the direction of rotation approximately after the upper dead point. So the compressed air is transferred from the compression chamber to the combustion chamber 754-3 ^{in direic} ^ ^eai ways, /

In a particularly two-dimensional embodiment, the opens Inlet port approximately in the same pressure zone when starting one, while the outlet channel approximately in the zone equal pressure® opens between the leading and trailing chamber. This gives a particularly favorable introduction of the fuel-laden air from the vortex chamber into the combustion chamber

The drawing shows an embodiment of the invention. It means:

Pig. 1 a schematic representation of the concept of the invention, '

Fig. 2 shows a section along the line A-B through the Vortex chamber with the tangential air inlet and the central-central air outlet.

In Pig. 1, 1 is the inner circumferential surface with the piston 2. In the vicinity of the upper Sotpunktee is the vortex chamber 3 arranged with the inlet channel 4 and the outlet channel 5. The inlet channel 4 opens into the air inlet point 6 opens tangentially into the vortex chamber 3 and the Auelaßkanal at the gas outlet point 7 centrally-centered from the vortex chamber 3. The glow plug is marked 8 and the injection nozzle is marked 9, 10, 11 and 12 are the variable-volume chambers. ,.;, -

Fig. 2 has essentially the same position as Pig. 1.

* ί ·,.: *: ■ '■■■'

W - ί · '■■■

Effectively i

When the engine is started, i.e. at low speed, some of the combustion air is drawn in through the swirl chamber 5 is pressed into the leading volume-changing chamber, e.g. 11. Hachdera the Auelaßkanal 5 of the vortex chamber 3 is overrun by an unspecified radial bar, the actual compression of the begins Combustion air. As a result of the outer shape of the piston 2 migrates the throttle gap between the inner circumferential surface 1 and piston 2 counter to its direction of rotation to the top dead center. Due to this peculiarity, the Auelaßkanal 5 remains the vortex chamber 3 Always more or less closed and condensed Air flows through the inlet channel 4 to the swirl chamber 3. Under certain circumstances, however, through the outlet channel 5 returning air cannot influence the good flow of the swirl in the vortex chamber 3, since the air is central-centered would flow back. As a result of the compression that is not sufficient for auto-ignition of the injected fuel £ - ^ 8 there is a glow plug 8 in the swirl chamber 3 intended. With the onset of the first ignition, the zone of the same pressure of two adjacent volume-variable units migrates Chambers in the sense of the direction of rotation of the piston 2 approximately between the inlet and outlet channels of the vortex chamber. Consequently the combustion gases can quickly hit back into the swirl chamber 3 with steadily decreasing Pressure difference between leading and trailing volume variable Chamber. However, the gases returning into the swirl chamber 3 can destroy the existing swirl in the swirl chamber 3 do not brake. With tangential fuel 22.7543 ./·

injection into the vortex chamber 3 in the sense of the swirl, this is even reinforced. The gases flowing out in the middle of the swirl chamber 3 through the outlet channel 5 cannot disturb the swirl and the air flowing in releases further fuel from the wall of the swirl chamber 5. Until the moment in which the sealing strip closes the outlet channel 5, the swirl chamber 5 is flushed by residual gases and thus cooled, as a result of which the subsequent partial fuel combustion in the swirl chamber is improved. The piston surface is also additionally cooled in this way and the outflow energy from the vortex chamber generates a driving torque on the piston 2. The overlapping of the inlet and outlet channels means that the suction volume-variable chamber is also largely emptied of exhaust gases. 'i

Claims (3)

- * BÜ (Bi, SSeisWi ■: * »; ■ - ■■ - -.» '. Ι :: .. - ■ ■' '- ..' ΐ »'-.". JSK .'.- ^ S -RA.A53 755 ^ 28.Ö.B5 Maschinenfabrik Augsburg-Iürnberg Aktiengesellschaft Nürnberg Nuremberg, March 13, 1964 Protection 1. Vortex chamber without change of direction of swirl for rotary piston diesel engines with fuel injections with a housing consisting of a stationary jacket, the multi-arcuate inner jacket surface in cross section has the shape of a multi-arcuate epitroohoid and with side parts which, together with the jacket, delimit an interior with inlet and outlet channels, which is penetrated perpendicular to the side parts by an eccentric shaft, on whose E _x center a polygonal piston rotatably loaded ' * device whose speed is in a fixed ratio to the The speed of the eccentric shaft is and a Combustion chamber is arranged with a transfer channel, characterized in that a circular vortex chamber (3) is provided with a tangentially arranged one Inlet channel (4) and one concentric in its center. arranged outlet channel: (5) 2. vortex chamber according to claim 1, characterized in that the inlet channel (4) in the direction of rotation approximately before top dead center and the outlet channel (5) in the direction of rotation opens into the inner lateral surface (1) approximately after the upper! bot point. 22.7543. - ./. -2- 3. Vortex chamber according to claim 1 and 2, characterized gekennaelehne t _s that the inlet channel (4) opens into the zone of the same pressure "when starting" while the outlet channel (5) opens into the zone of the same pressure between pre- and naoheilender Katuner.