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US 5,355,846 AGranted
Cooling device for use in engine
AssigneeAisin Seiki Kabushiki Kaisha
InventorYasuo Ozawa
Life of this patent
Estimating the term…
Abstract
A cooling device is provided for use in an engine comprising, a first cooling circuit which is filled with first cooling water; a second cooling circuit which includes second cooling water and air; a water jacket of the engine disposed in the first cooling circuit; a heat exchanger including a radiating portion and a cooling portion, the radiating portion being disposed in the first cooling circuit while the cooling portion being disposed in the second cooling circuit; a first pump which is disposed in the first cooling circuit; a condenser which is disposed in the second cooling circuit; and a second pump which is disposed in the second cooling circuit.
Claims20
A cooling device for use in an engine comprising:
- a first cooling circuit which contains a first cooling water;
- a second cooling circuit for cooling said engine by an evaporative cooling method, said second cooling circuit containing a second cooling water and air in a closed system;
- a water jacket of said engine disposed at one end of said first cooling circuit;
- a heat exchanger including a radiating portion and a cooling portion, said radiating portion is disposed in said first cooling circuit and downstream of said water jacket while said cooling portion is disposed in said second cooling circuit;
- a first pump which is disposed in said first cooling circuit between said water jacket and said heat exchanger;
- a condenser which is disposed in said second cooling circuit and downstream from said cooling portion;
- a second pump which is disposed in said second cooling circuit between said condenser and said cooling portion, said second pump for increasing or decreasing the volumetric flow rate of said second cooling water into said cooling portion and thereby controlling the level of said second cooling water in said cooling portion;
- and
- control means for controlling the level of said second cooling water in said portion by adjusting the volumetric flow rate of said second pump.
6 more elements
A cooling device for use in an engine comprising:
- a first cooling circuit having a first cooling water therein for cooling said engine by an unevaporative cooling method;
- a second cooling circuit having a second cooling water and air therein for cooling said first cooling water by an evaporative cooling method;
- a water jacket disposed in said engine and part of said first cooling circuit;
- a heat exchanger including a radiating portion and a cooling portion, said radiating portion is disposed in said first cooling circuit and downstream of said water jacket while said cooling portion is disposed in said second cooling circuit;
- a first pump which is disposed in said first cooling circuit between said water jacket and said heat exchanger;
- a condenser which is disposed in said second cooling circuit and downstream from said cooling portion;
- a second pump which is disposed in said second cooling circuit between said condenser and said cooling portion, said second pump for increasing or decreasing the volumetric now rate of said second cooling water into said cooling portion and thereby controlling the level of said second cooling water in said cooling portion;
- and
- control means for cooling portion level of said second cooling water in said cooling portion by adjusting the volumetric flow rate of said second pump.
6 more elements
A cooling device for use in an engine comprising:
- a first cooling circuit which contains a first cooling water;
- a second cooling circuit which contains a second cooling water and air in a closed system;
- a water jacket of said engine disposed at one end of said first cooling circuit;
- a heat exchanger including a radiating portion and a cooling portion, said radiating portion is disposed in said first cooling circuit and downstream of said water jacket while said cooling portion is disposed in said second cooling circuit;
- a first pump which is disposed in said first cooling circuit between said water jacket and said heat exchanger;
- a condenser which is disposed in said second cooling circuit and downstream from said cooling portion;
- a second pump which is disposed in said second cooling circuit between said condenser and said cooling portion, said second pump for increasing or decreasing the volumetric flow rate of said second cooling water into said cooling portion and thereby controlling the level of said second cooling water in said cooling portion;
- a pressure reduction means disposed in the second cooling circuit between said cooling portion and said second pump;
- and
- control means for controlling said pressure reduction means and said second pump, said control means disposed between said pressure reduction means and said second pump, said control means increasing the pressure reduced by said pressure reduction means and increasing the amount of said second cooling water supplied by said second pump to said cooling portion, by increasing the volumetric flow rate of said second pump, if the temperature of said first cooling water exceeds a predetermined temperature value.
7 more elements
A cooling device for use in an engine comprising:
- a first cooling circuit having a first cooling water therein for cooling said engine by an unevaporative cooling method;
- a second cooling circuit having a second cooling water and air therein for cooling said first cooling water by an evaporative cooling method;
- a water jacket disposed in said engine and part of said first cooling circuit;
- a heat exchanger including a radiating portion and a cooling portion, said radiating portion is disposed in said first cooling circuit and downstream of said water jacket while said cooling portion is disposed in said second cooling circuit;
- a first pump which is disposed in said first cooling circuit between said water jacket and said heat exchanger;
- a condenser which is disposed in said second cooling circuit and downstream from said cooling portion;
- a second pump which is disposed in said second cooling circuit between said condenser and said cooling portion, said second pump for increasing or decreasing the volumetric flow rate of said second cooling water into said cooling portion and thereby controlling the level of said second cooling water in said cooling portion;
- a pressure reduction means disposed in the second cooling circuit between said cooling portion and said second pump;
- and
- control means for controlling said pressure reduction means and said second pump, said control means disposed between said pressure reduction means and said second pump, said control means increasing the pressure reduced by said pressure reduction means and increasing the amount of said second cooling water supplied by said second pump to said cooling portion, by increasing the volumetric flow rate of said second pump, if the temperature of said first cooling water exceeds a predetermined temperature value.
7 more elements
Dependencies are inferred from the claim text.