Cooling control system for internal combustion engines equipped with superchargers

A cooling control system for an internal combustion engine having a supercharger, an engine room accommodating said supercharger, a first cooling system for cooling said engine, and a second cooling system for cooling said supercharger, comprising:

• first sensor means for detecting stoppage of said engine;
• second sensor means comprising first temperature detecting means for detecting the temperature of said coolant at a location downstream of said supercharger in said second cooling system, and second temperature detecting means for detecting the temperature of lubricating oil in said engine;
• pump means for supplying coolant for cooling said supercharger to said second cooling system;
• pump driving means for electrically driving said pump means;
• cooling fan means arranged in said engine room;
• fan driving means for electrically driving said cooling fan means;
• timer means for determining whether or not at least one predetermined time period has elapsed;
• and
• control means for controlling at least one of said pump driving means and said fan driving means in a manner such that operation of said pump means and operation of said cooling fan means are controlled based on a result of detection by said first and second sensor means and a result of determination by said timer means, said control means controlling said pump driving means in accordance with outputs of said first and second temperature detecting means of said second sensor means.

A cooling control system for an internal combustion engine having a supercharger, an engine room accommodating said supercharger, a first cooling system for cooling said engine, and a second cooling system for cooling said supercharger, comprising:

• first sensor means for detecting stoppage of said engine;
• second sensor means comprising first temperature detecting means for detecting the temperature of said coolant at a location downstream of said supercharger in said second cooling system, and second temperature detecting means for detecting the temperature of lubricating oil in said engine;
• pump means for supplying coolant for cooling said supercharger to said second cooling system;
• pump driving means for electrically driving said pump means;
• cooling fan means comprising a first cooling fan comprising a radiator fan arranged at a first location in said engine room for cooling said engine, and a second cooling fan arranged at a second location in said engine room;
• fan driving means comprising first and second fan driving means for electrically driving said first and second cooling fans respectively;
• timer means for detecting whether or not at least one predetermined time period has elapsed;
• and
• control means for controlling at least one of said pump driving means and said fan driving means in a manner such that operation of said pump means and operation of said cooling fan means are controlled based on a result of detection by said first and second sensor means and a result of determination by said timer means, said control means controlling said first and second fan driving means in accordance with outputs of said first and second temperature detecting means of said second sensor means after said first sensor means detects a stoppage of said engine.

A cooling control system for an internal combustion engine having a supercharger, an engine room accommodating said supercharger, a first cooling system for cooling said engine, and a second cooling system for cooling said supercharger, comprising:

• first sensor means for detecting stoppage of said engine;
• second sensor means comprising first coolant temperature detecting means for detecting the temperature of coolant at a location downstream of said supercharger in said second cooling system, and second coolant temperature detecting means for detecting the temperature of coolant in said first cooling system for cooling said engine;
• pump means for supplying coolant for cooling said supercharger to said second cooling system;
• pump driving means for electrically driving said pump means;
• cooling fan means arranged in said engine room;
• fan driving means for electrically driving said cooling fan means;
• timer means for determining whether or not at least one predetermined time period has elapsed;
• and
• control means for controlling at least one of said pump driving means and said fan driving means in a manner such that operation of said pump means and operation of said cooling fan means are controlled based on a result of detection by said first and second sensor means and a result of determination by said timer means, said control means operating said pump driving means when coolant temperature detected by one of said first and second coolant temperature detecting means is above a predetermined value.

A cooling control system for an internal combustion engine having a supercharger, an engine room accommodating said supercharger, a first cooling system for cooling said engine, and a second cooling system for cooling said supercharger, comprising:

• first sensor means for detecting stoppage of said engine;
• second sensor means for detecting the temperature of lubricating oil in said engine;
• pump means for supplying coolant for cooling said supercharger to said second cooling system;
• pump driving means for electrically driving said pump means;
• cooling fan means arranged in said engine room;
• fan driving means for electrically driving said cooling fan means;
• timer means for determining whether or not at least one predetermined time period has elapsed wherein said timer means starts counting a predetermined time period when said first sensor means has detected stoppage of said engine;
• and
• control means for controlling said pump driving means and said fan driving means in a manner such that operation of said pump means and operation of said cooling fan means are controlled based on a result of detection by said first and second sensor means and a result of determination by said timer means, said control means operating said pump driving means over said predetermined time period which is counted by said timer means when the temperature detected by said second sensor means is above a predetermined value.