Cylinder block of an axial piston compressor with elongated cylinder face

Abstract

Cylinder block (32) of an axial piston compressor (20), in particular for use in a vehicle air conditioner with CO2 as coolant, which comprises at least one, in particular several cylinder bores distributed about a periphery, each of which defines a cylinder face and accommodates a piston (8) consisting of piston shaft (8a) and piston neck (8b), wherein the piston neck (8b) outside the cylinder bore serves for coupling to a swash- and/or wobble-plate drive mechanism (29, 33) operatively connected to a rotatable drive shaft (1), by means of which the piston (8) is movable back and forth within the cylinder bore, between a top-dead-center point (OT) and a bottom-dead-center point (UT), and wherein the edge of the opening of the cylinder face on the drive-mechanism side comprises at least one recess (26d) that can be at least partially engaged by a transitional region (8c) disposed between the shaft (8a) and the neck (8b) of the piston, so that the cylinder face effective for the piston (8) is enlarged or elongated.

Dependencies are inferred from the claim text.