Internal combustion engine system
AssigneeVolvo Truck Corporation
InventorArne ANDERSSON
Life of this patent
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Abstract
An internal combustion engine system includes a reciprocating compressor for pressurizing a fluid medium and having a compressor cylinder for accommodating a compressor piston. The compressor cylinder has a main cylinder volume and a secondary adjustable volume in fluid communication with the main cylinder volume so as to provide a variable geometrical compression ratio.
Claims15
An internal combustion engine system comprising a reciprocating compressor for pressurizing a fluid medium and having a compressor cylinder for accommodating a compressor piston, said compressor cylinder having a main cylinder volume and a secondary adjustable volume in fluid communication with the main cylinder volume so as to provide a variable geometrical compression ratio, wherein the secondary adjustable volume comprises at least a plurality of volume compartment portions.
A method for controlling a geometrical compression ratio of a reciprocating compressor of an internal combustion engine system, said reciprocating compressor is configured to pressurize a fluid medium and having a compressor cylinder for accommodating a compressor piston, said compressor cylinder having a main cylinder volume and a secondary adjustable volume in fluid communication with the main cylinder volume so as to provide a variable geometrical compression ratio wherein the secondary adjustable volume comprises at least a plurality of volume compartment portions, wherein the method comprising the steps of:
- adjusting the volume of the secondary adjustable volume to a first adjusted volume;
- and
- pressurizing said fluid medium to a first geometrical compression ratio by a displacement of the compressor piston from a bottom dead centre to top dead centre.
Dependencies are inferred from the claim text.