Toyota Jidosha Kabushiki Kaisha

Hisao Nonoyama

Nobutaka Takeuchi

Yukari Araki

Kazuya Nakagaki

Masanori Shibata

Osamu Shintani

Hiroshi Kobae

Daisuke Murakami

Masaho Narita

A cooling apparatus for an internal combustion engine includes an engine cooling system that includes a water jacket, a radiator, and a circulation passage through which a coolant is circulated between the water jacket and the radiator, wherein the coolant is provided in the engine cooling system; a water pump that forcibly circulates the coolant provided in the engine cooling system when the water pump is operated; a reservoir tank in which the coolant is reserved, and into which gas flows from the engine cooling system while the reserved coolant flows out to the engine cooling system from the reservoir tank; and a forcible introduction portion that forcibly introduces the coolant from the reservoir tank into the engine cooling system before the internal combustion engine is started.

Cooling apparatus for internal combustion engine, method of controlling the same, and hybrid vehicle including the same

An engine coolant amount determining apparatus includes an electric water pump that can be operated intermittently while an engine is running, and a coolant temperature detecting means for detecting the temperature of coolant at a location higher than the water pump. The engine coolant amount determining apparatus also includes determining means for determining that the amount of coolant is equal to or less than a predetermined amount when the degree of change in the coolant temperature detected by the coolant temperature detecting means when the water pump is operated intermittently is large.

Engine coolant amount determining apparatus

Growing community of inventors

Kariya, Japan

Hisao Nonoyama