| 摘要 |
A crank chamber communication structure for a multi-cylinder internal combustion engine having a plurality of partition walls (31, 32) that are formed by a cylinder block (13) and a crankcase (14), that are formed to support a crankshaft (17) and to define a plurality of crank chambers (23a to 23c) that correspond to the plurality of cylinders, the structure including: a plurality of respective first communicating holes (31a, 32a) formed in the plurality of partition walls for communication between respective pairs of adjoining crank chambers (23a, 23b; 23b, 23c) separated by an interposed partition wall; and a second communicating hole (35a) that is formed at least either of the cylinder block or the crankcase, and that is interposed between a pair of non-adjoining crank chambers between which at least two partition walls among the plurality of partition walls are interposed for direct communication between the pair of non-adjoining crank chambers. |
