Patent ID: 9222401
Filing Date: 2015-12-29
Classification: F01P

Abstract:
1. A coolant passage apparatus used for a cooling device of an internal combustion engine in which a circulation channel for a coolant is formed between a fluid passage formed in a V-internal combustion engine and a radiator, and provided between a coolant outlet of said internal combustion engine and a coolant inlet of said radiator, characterized in that said coolant passage apparatus is formed by joining two resin moldings constituted by a first body and a second body which are each individually molded, and at least a pair of coolant receiving pipes for respectively receiving the coolant from left and right engine heads of said V-internal combustion engine having a center plane which is along an axial direction of a crankshaft of said V-internal combustion engine and which symmetrically divides the left and right engine heads, a collecting passage for causing said one pair of coolant receiving pipes to communicate therewith and collecting the coolant, and a communicating tube which is towards said radiator for supplying the coolant to said radiator via said collecting passage are formed therein, and said one pair of coolant receiving pipes are respectively communicated with said collecting passage, with said collecting passage therebetween, and molded so as to respectively face the same direction, and said one pair of coolant receiving pipes are integrally molded in one resin molding of said first body and second body, and each of said first body and second body has one annularly formed junction portion, and said coolant passage apparatus has a configuration such that said collecting passage is formed by joining said junction portions of the first body and second body to each other, and said annularly formed junction portions of the first body and the second body are formed so as to be parallel to a plane along the axial direction of a crankshaft of said V-internal combustion engine, said annularly formed junction portions being formed to extend along a direction orthogonal to the center plane of said V-internal combustion engine.