OIL SUPPLY STRUCTURE OF A MULTI-CYLINDER ENGINE

摘要

The present invention relates to an oil supply structure of a multi-cylinder engine. In the oil supply structure of the multi-cylinder engine including a balance shaft and a cam shaft, each of the balance shafts and the cam shafts having an oil passage extending lengthwise along an axial direction in the center of each of the shafts. Also, a plurality of journals connected to a cylinder block are disposed on an outer circumference part of each of the balance shaft and the cam shaft. An intake passage connected to the oil passage is formed in the outer circumference part of the journal, which is disposed on the foremost end of each of the shafts, from among the plurality of journals. Also, discharge passages connected from the oil passage to outer circumference parts of the corresponding journals are formed in the journals except for the foremost end journal, respectively. A supply passage extending from a lower portion of the cylinder block to an upper portion via a periphery of the foremost end journal of the balance shaft and the foremost end of the cam shaft is formed in a front surface of the cylinder block. Thus, lubricating oil may be continuously supplied into the cam shaft and the balance shaft using one supply passage.