Provided are: a three-way valve (12) provided on an outlet side of a cooling-water flow path (L1), and configured to branch the cooling-water flow path (L1) into a heat-exchanging flow path (L3) having a heat exchanger (14) for cooling of cooling water dis...

A cooling water control apparatus (30) controls a cooling apparatus having first pipe (181) which circulates cooling water through an engine (20); second pipe (182) which circulates cooling water not through the engine; a switching valve (13) whose state i...

A viscosity measuring apparatus (100) is mounted on a vehicle (1) provided with an engine (10), a cylinder pressure sensor (24) configured to detect cylinder pressure which is inner pressure of a cylinder of the engine, a fuel injection valve (19) configur...

An engine system that includes an internal combustion engine and a heat accumulating device also includes a heat accumulating means (10) for accumulating heat by storing a heated cooling medium, heat supplying means (11,12,22,C1,C2) for supplying the cooli...