초록 ▼

By using a small heat accumulator installed in a cooling water system, malfunction of exhaust emission during warming up is prevented. Such a cooling system includes a cooling water passage for returning cooling water flowing from a cooling water outlet of an automotive engine to a cooling water inl

By using a small heat accumulator installed in a cooling water system, malfunction of exhaust emission during warming up is prevented. Such a cooling system includes a cooling water passage for returning cooling water flowing from a cooling water outlet of an automotive engine to a cooling water inlet through a radiator, a first bypass passage for returning the cooling water just after flowing from the cooling water outlet to the cooling water inlet through the radiator, a second bypass passage for returning the cooling water just after flowing out from the cooling water outlet of the engine to the cooling water inlet through the radiator by supplying the cooling water near a heat-sensing portion of a thermostat, a flowing amount adjusting valve for enlarging a cooling water flowing ratio to the first bypass passage with respect to the second bypass passage corresponding to a reduction of a load of the engine and the heat accumulator installed through the first bypass passage.

대표청구항 ▼

[ What is claimed is:] [1.] A cooling system for an internal combustion engine, said system comprising:a first cooling water passage for conveying cooling water flowing from a cooling water outlet of said internal combustion engine to an inlet of a radiator and a second cooling water passage for con

[ What is claimed is:] [1.] A cooling system for an internal combustion engine, said system comprising:a first cooling water passage for conveying cooling water flowing from a cooling water outlet of said internal combustion engine to an inlet of a radiator and a second cooling water passage for conveying cooling water from an outlet of said radiator to a cooling water inlet of said internal combustion engine;a bypass passage for returning said cooling water just after flowing from said cooling water outlet of said internal combustion engine to said cooling water inlet of said internal combustion engine without passing through said radiator;load state detecting means for detecting a load state of said internal combustion engine;a valve for opening said bypass passage corresponding to a reduction of load of said internal combustion engine detected by said load state detecting means; anda heat accumulator connected to said bypass passage.