摘要:
The present invention provides an airtight reservoir in fluid communication with a cooling system of an internal combustion engine. This cooling system allows coolant to flow into the overflow bottle, thereby compressing air therein, and causing increases pressure. When the coolant again cools, the pressurized coolant flows back into the cooling system, thereby maintaining the system pressure above ambient.
摘要:
In a heat transfer system (10), an upper coolant chamber (31) and a lower coolant chamber (24) of a typical engine, such as an internal combustion engine, fuel cell, boiler, or other engine for converting fuel to thermal energy, are formed adjacent to the heat-rejecting components of the engine and are hermetically sealed to prevent exposure of heat-transfer liquid within the chambers to the engine's ambient atmosphere. The heat-transfer liquid is preferably a substantially anhydrous, boilable liquid having a saturation temperature higher than that of water, and the heat-transfer liquid is pumped at a predetermined flow rate, and distributed through the heat-transfer fluid chamber so that the liquid within the chambers substantially condenses the heat-transfer liquid vaporized by the heat-rejecting components of the engine. Thermally-expanded heat-transfer liquid, non-condensable gas, and trace amounts of vapor, if any, are received within a hermetically-sealed accumulator (78) coupled in fluid communication with a relatively low-pressure area of the heat-transfer fluid chambers (24, 31), and the accumulator (78) defines at least one chamber (86, 88, 90), which may form a liquid-free space (88), for receiving the non-condensable gas and trace vapors. The at least one accumulator chamber defines a predetermined volume (V), which may be a variable volume, selected to maintain the pressure within the accumulator within a predetermined pressure limit (e.g., about 5 psig) during engine operation.
摘要:
A cooling device for an internal combustion engine includes a brushless DC motor having a housing, an output shaft, a magnet rotor fixedly mounted on the output shaft, and a stator positioned in the housing and having three phase windings which are arranged in the circumferential direction around the magnet rotor, an impeller connected at an outside of the housing to one end of the output shaft of the motor and circulating a cooling liquid through the engine, and a radiator while the output shaft is being rotated. A device can be provided for generating heat at the phase windings for warming-up the cooling liquid if a temperature thereof is below a set value. A device can be provided for stopping the rotation of the output shaft of the motor without interrupting the energization of the motor when a temperature of the cooling liquid is below a set value.
摘要:
A method of operating cooling fluid circuit of an internal combustion engine for an automotive vehicle at cold start of said engine. Said cooling fluid circuit includes pump means, a heat storage and a cabin heating system heat exchanger interconnected between said heat storage and said engine. The method comprises unloading said heat storage to transfer heat thereof to cooling fluid circulating in said cooling fluid circuit and operating said heat exchanger so as to transfer at least some of the heat of the circulating cooling fluid to heating air of said cabin heating system. Said heat storage is being unloaded in a first unloading phase during which the cooling fluid circulates in said cooling fluid circuit at a flow rate substantially corresponding to the saturation point of said heat exchanger, and thereafter in a second unloading phase during which the cooling fluid circulates in said cooling fluid circuit at a rate reduced such that the temperature of the heating air entering the vehicle cabin remains at a uniform level during said second unloading phase until said engine has reached a temperature sufficient to maintain said uniform level.