| 摘要 |
<p>The invention relates to a hydraulic engine with radial pistons, comprising girders which transmit the thrusts of the pistons and rest against strips secured to the cylinder block. The surface of the cylinder block has a degree of roughness at least equal to the following values given in reference to the currently applied norms 0.25 mu RA; 15 mu Rt; and 8 mu Rp. The invention finds its application in the production of a reliable engine.</p> |
