Back to results
US 5,095,855 AGranted
Cooling device for an internal-combustion engine
AssigneeNippondenso Co., Ltd.
InventorsSunao Fukuda, Kazuhiko Asano, Akihito Tanaka, Sumio Susa
Life of this patent
Estimating the term…
Abstract
A cooling device for an internal combustion engine has an additonal water pump and a bypass conduit which bypasses the additional water pump. When the amount of heat radiation of the radiator is insufficient, the additional water pump is driven by an electric motor. When the additional water pump is not necessary, the bypass conduit is opened, so that the cooling fluid bypasses the additional pump.
Claims8
A cooling device for an internal combustion engine, comprising:
- a heat exchanger for cooling a cooling fluid of an engine by dissipating heat to a surrounding air;
- a first conduit for introducing the cooling fluid into the heat exchanger from the engine;
- a second conduit for introducing the cooling fluid cooled by the heat exchanger into the engine;
- a first circulating means driven by the engine for circulating the cooling fluid;
- a second circulating means for circulating the cooling fluid independently from the first circulating means, said second circulating means being disposed in series with the first circulating means and controlled to start circulating the cooling fluid when a temperature of the engine is above a predetermined value;
- a bypass conduit for controlling the cooling fluid to bypass the second circulating means, said bypass conduit being provided in parallel with the second circulating means;
- and
- a valve means for opening the bypass conduit when a flow rate of the cooling fluid which is circulated by the first circulating means and the second circulating means is above a predetermined value.
5 more elements
A cooling device for an internal combustion engine, comprising:
- a heat exchanger for cooling a cooling fluid of an engine by dissipating heat to a surrounding air;
- a first conduit for introducing the cooling fluid into the heat exchanger from the engine;
- a second conduit for introducing the cooling fluid cooled by the heat exchanger into the engine;
- a first bypass conduit which connects the first conduit with the second conduit to bypass the heat exchanger;
- a first circulating means driven by the engine for circulating the cooling fluid;
- a second circulating means for circulating the cooling fluid independently from the first circulating means, said second circulating means being disposed in series with the first circulating means;
- a second bypass conduit for controlling the cooling fluid to bypass the second circulating means, said bypass conduit being provided in parallel with the second circulating means;
- and
- a valve means for controlling a flow rate of the cooling fluid which flows in the first bypass conduit and the second bypass conduit.
6 more elements
Dependencies are inferred from the claim text.