DE2607741A1 - IC engine compression buffer chambers - communicate with cylinder in region of bottom dead centre piston position through ports - Google Patents

Abstract

The combustion engine is provided with a number of buffer chambers (1) of appropriate shape and size which individually or together communicate with the combustion chamber (3) via suitably shaped and sized orifices (2). The orifices are positioned such that they are uncovered in the bottom dead centre region of the piston (4) and until it reaches its lowest position, and closed as the piston moves upwards. The shape, size and position of the chambers (1) and orifices (2) may be variable, and the orifices may be closable. The chambers (1) may be interconnected and may be in communication with other units.

Description

Alfred Wildanger 66o7 Qui Various

Architect AKS £ Beethovenstr. 8

l5tegrierter_pufferzelle-VorTerdichter_für_combustion-engines ^

The subject matter of the invention reduces pollutant emissions with simultaneous improvement in efficiency when operating preferably four-stroke reciprocating internal combustion engines.

In conventional four-stroke reciprocating internal combustion engines, only through the piston movement in the cylinder in connection with controlled valves the intake of the fuel-air mixture, the compression of the same and - after the combustion - the discharge of the burned gases.

The performance of these engines can be achieved through relatively complex measures such as mechanical compressors to increase the pre-compression, increased, or pollutant emissions through multi-layer charging can be reduced via additional valves or other precautions.

The invention described below combines the advantages of these two in a simple manner with little construction effort Measures.

construction

Outside the cylinder 3, one or more buffer cells 1 are arranged in the form of hollow sections otherwise enclosed on all sides of appropriate shape and size, which are connected to the cylinder interior 3 by openings 2 of appropriate shape and size in the cylinder jacket. The arrangement of the openings 2 in the cylinder jacket is such that they are only released when the piston 1+ is in the vicinity of bottom dead center and up to this, but are otherwise closed by the piston walls with respect to the interior of the cylinder.

Size, shape and arrangement of the buffer cells 1 and the openings 2 can be changed, the openings 2 can be closed, the Buffer cells 1 can appropriately with each other and with others Aggregates to be connected.

The arrangement of the buffer cells 1 and the openings 2 can be in conventional Motors can also be made later.

709835/0322

- 2 ~

Alfred Wildanger

function

Towards the end of work, when the piston if is close to bottom dead center, the openings 2 in the cylinder jacket are opened by the piston k sliding past The pressure is stored there because the piston if sliding up closes the openings 2 again. The remaining burned gases are expelled through the outlet valve.

After reaching top dead center, the inlet valve is opened and the downward sliding piston for the fuel-air mixture sucked in.

This mixture is closed when the piston is in the lower position Valves and released openings 2 as a result of the now escaping from the buffer cells 1 back into the cylinder 3 and relaxing Gases pre-compressed in such a way that at the end of the compression stroke a higher compression is achieved than the piston stroke / cylinder content ratio is equivalent to.

The compressed fresh gas is located at the one for the ignition the most favorable place in the cylinder head and the previously stored gases experience afterburning on the following working stroke.

The drawing shows the section through a cylinder 3 with buffer cells 1 and openings 2 shown schematically, with the piston if is in the bottom dead center.

The advantages according to the invention are that - in addition to the higher power due to the pre-compression - with increasing load on the engine due to the higher residual pressure of the combustion gases at the end of the work cycle, the pre-compression and thus the effective torque are automatically increased by the stratified charge effect with the partial Post-combustion reduces the emission of pollutants and increases the economic efficiency and the functional reliability and freedom from maintenance of the integrated buffer cell pre-compressor can be guaranteed over the entire service life of the engine due to the simple construction without moving parts.

709835/0322

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Claims (1)

Alfred Wildanger 66o7 Qui Various Architect AKS Beethovenstr. 8 Integrated buffer cells -Vorv forger for internal combustion engines characterized in that the interiors of one or more buffer cells 1 of appropriate shape and size with the cylinder interior 3 of each cylinder of the engine individually or collectively by means of openings 2 of appropriate shape and size are connected in such a way that these openings 2 when the piston k is in the vicinity of the Bottom dead center and up to this are released by the downward sliding piston walls, but otherwise are closed by the piston walls opposite the cylinder interior 'so that the shape, size and arrangement of the buffer cells 1 and the openings 2 can be changed, the openings 2 can be locked and the buffer cells 1 appropriately with one another and can be in connection with other units and that buffer cells 1 and openings 2 can also be arranged subsequently. 709835/0322