Patent ID: 9593579
Date: 2017-03-14
CPC Classifications: F01B,F02B

Claim:
1. An engine block comprising: a passage for a multi-row reciprocating motion part; a passage for a one-row reciprocating motion part, central axes of said passages being vertical to and across each other at one point; and a crankshaft penetration hole traversing a body of the engine block from a front to a back so as to facilitate penetration of a crankshaft wherein the passages for the multi-row reciprocating motion part and the one-row reciprocating motion part are respectively used for supplying a track space for reciprocating motion of the multi-row reciprocating motion part and a track space for reciprocating motion of the one-row reciprocating motion part; wherein the passage for the multi-row reciprocating motion part comprises multi-row runways comprising two rows of runways separated by a separation groove, each of the two rows of runways comprising a pair of guide rails facing each other, inner circumferential surfaces of the guide rails respectively engaging with guiding surfaces on sides of the first row of the first guiding part and the second row of the first guiding part of the multi-row reciprocating motion part such that each row of runway forms a reciprocating motion track; wherein the passage for the one-row reciprocating motion part comprises a one-row runway comprising a position ring and a pair of guide rails which extend from the bottom face of the position ring, the pair of guide rails are positioned through the separation groove, wherein the passage for the one-row reciprocating motion part forms an opening in the engine block, and the opening includes positioning structures which cooperate with the position ring to locate and secure the one-row runway; and wherein the multi-row runways and the one-row runway are vertical to each other.