Patent ID: 8967094
Filing Date: 2015-03-03
Classification: F01P,F02F,F05C

Abstract:
1. An internal combustion comprising: a cylinder block equipped with a ringed coolant water passage formed so as to surround a plurality of cylinders; two partitioning members having a larger thermal expansion coefficient as compared to that of said cylinder block, and separating said ringed coolant water passage into a first passage existing mainly at one side of a longitudinal bore center plane which extends along the longitudinal direction of said cylinder block and a second passage existing mainly at the other side of said longitudinal bore center plane; an inlet which communicates with said first passage; an outlet which communicates with said second passage; and a cylinder head provided with a coolant water passage opening to both said first passage and said second passage, wherein a gap is continuously or intermittently formed between said cylinder block and an entirety of said partitioning member under a cold condition.