초록 ▼

The temperature of an internal combustion engine is controlled in accordance with engine operating conditions such as engine load and speed by controlling the temperature of a working fluid or fluids of the engine, such as engine intake air, engine cooling water and lubricating oil. To do this there

The temperature of an internal combustion engine is controlled in accordance with engine operating conditions such as engine load and speed by controlling the temperature of a working fluid or fluids of the engine, such as engine intake air, engine cooling water and lubricating oil. To do this there are provided fluid temperature sensing means, engine condition detecting means, a control unit to produce a control signal and means for regulating the working fluid temperature in response to the control signal so as to bring the sensed working fluid temperature closer to a predetermined reference temperature which is set as being a function of engine operating conditions. Preferably the temperature control is operated in such a manner that the working fluid temperature is high at low engine load and low at high engine load.

대표청구항 ▼

An apparatus for controlling the temperature of an internal combustion engine, comprising; a plurality of fluid temperature sensing means each for sensing the temperature of each one of different kinds of working fluids which are capable of exchanging heat with the engine, condition detecting means

An apparatus for controlling the temperature of an internal combustion engine, comprising; a plurality of fluid temperature sensing means each for sensing the temperature of each one of different kinds of working fluids which are capable of exchanging heat with the engine, condition detecting means for detecting the engine operating conditions, means for finding, in response to the detected engine operating conditions, each reference temperature of said working fluids which is a function of the engine operating conditions, controller means which compares the sensed temperature of each of said working fluids with the corresponding reference temperature to find the error therebetween and produces each control signal of said working fluids in accordance with the corresponding error, a plurality of fluid temperature regulating means each for regulating the temperature of each one of said working fluids in response to the corresponding control signal which is manipulated so as to bring the temperature of the working fluid closer to the reference temperature.