摘要:
The cooling circuit of an internal combustion engine cooling system wherein the coolant is allowed to boil and the vapor used as a vehicle for removing heat from said engine is equipped with an external reservoir and arranged so that the amount of liquid coolant in the cooling circuit of the system can be varied in a manner which both assists in controlling the boiling point of the coolant and prevents the development of negative pressures which invite the invasion of non-condensible matter such as atmospheric air.
摘要:
A vapor cooled type internal combustion engine is provided with an auxiliary reservoir and a coolant management system. The management system establishes fluid communication between the reservoir and a cooling circuit of the engine in a manner to fill the latter with liquid coolant when the engine is not in use and thus exclude contaminating non-condensible air from same, and monitors the operation of the system when operating in a closed mode to determine if too much or too little coolant has been retained in the circuit following a warm-up mode wherein the excess coolant which fills the system when cold, is displaced by its own vapor pressure. The management system also ensures that the cooling circuit is not switched from closed to open states while the possibility of superatmospheric pressures developing therein exist and thus prevents violent displacement of coolant out of the circuit to the reservoir in a manner which invites spillage of coolant and the entry of large amounts of contaminating air.
摘要:
In order to rapidly bring the temperature of the coolant in the coolant jacket of an evaporative type cooling system to a derived target value, both the rate of heat exchange between the condenser or radiator of the system and the surrounding ambient atmospheric air and the amount of coolant in the cooling circuit are varied in a manner to change the pressure and therefore the boiling point of the coolant. With the invention coolant is positively pumped to and from a reservoir which is maintained at atmospheric pressure, into and out of a cooling circuit which is hermetically sealed during engine operation via a valve and conduit arrangement which includes only two electromagnetic valves and associated conduits. A reversible pump is utilized to pump the coolant to and from the reservoir. The coolant is permitted to pass unrestrictedly through the pump when the pump is not operating due to a pressure differential between the cooling circuit and the reservoir.
摘要:
In order to avoid the need to provide auxiliary pumps and the like to obviate cavitation problems in the coolant return pump and the coolant jacket of an evaporative cooling type engine cooling system, a heater circulation pump which circulates heated coolant through a cabin heating circuit is selectively connected with a reservoir in which liquid coolant is stored and energized to pump fresh relatively cool coolant into the coolant jacket in the event that the normal coolant return pump is sensed as operating continuously for more than a predetermined period of time and thus ensure that the level of coolant in the coolant jacket is maintained at an appropriate level. Upon a positive pressure developing in the system a valve upstream of the coolant return pump is opened and hot coolant is displaced out to the reservoir. When a negative pressure develops the aforementioned valve is opened and fresh cool coolant from the reservoir is inducted into the system upstream of the pump to alleviate pump cavitation.
摘要:
A reservoir for holding fluid of a vehicle includes a tank and two brackets integrated with the tank to install the tank in the vehicle in an upper portion of the engine compartment. An attaching portion is arranged with each of the brackets to be fixed to the vehicle. A connecting portion is arranged with each of the brackets to connect the attaching portion to the tank. One of the connecting portions has a notch that is deformed or fractured so that the tank can be moved with respect to the vehicle to absorb an impact force that acts on the tank when the tank receives an impact force larger than a predetermined value. The attaching portion has a plurality of rib portions that is deformable or fracturable so that the tank can be moved with respect to the vehicle to absorb force that acts to the tank when the tank receives a force larger than a predetermined value.
摘要:
In order to supply a heat exchanger of the passenger room heating system with sufficiently heated liquid coolant of the boiling liquid engine cooling system, the coolant inlet conduit of the heat exchanger is connected to a coolant jacket of the engine at a position close to highly heated portions of the engine (such as, the combustion chamber walls, exhaust port walls or the like defined in the cylinder head of the engine).
摘要:
In order to quickly bring the temperature of both the engine and the engine lubricant up to desired operational temperatures and subsequently prevent overheating of the same, an oil cooler is integrated with an evaporative type engine cooling system in a manner that the temperature of the engine oil is controlled essentially in parallel with engine coolant. The engine load and/or engine speed are sampled and the cooling system operated in a manner to vary the boiling point of the coolant in accordance therewith.
摘要:
A supercharged engine intercooler includes a coolant jacket in heat exchange with the hot compressed air from the supercharger. The coolant in the jacket is permitted to boil and the vapor condensed in a radiator. The rate of condensation during high engine load is maintained sufficiently high to induce sub-atmospheric pressures within the radiator and coolant jacket which lowers the boiling point of the coolant, while during low load operation the rate of condensation can be reduced to raise the pressure in the coolant jacket and thus the boiling point of the coolant to rise above 100.degree. C. Upon stoppage of the engine, the coolant jacket and radiator are completely filled with liquid coolant to prevent contaminating atmospheric air from leaking into the system.
摘要:
A cylinder block comprises an upper section having a plurality of engine cylinder bores therein, the upper section having first and second oppositely disposed wall members, and a skirt section having a cavity defining a crankcase for an engine crankshaft, the skirt section having first and second oppositely disposed walls which are integral to and in straight alignment with the first and second wall members of the upper section, respectively, thereby effectively preventing noise radiation from the skirt section and improving the torsional and flexural rigidities of the cylinder block.
摘要:
In an engine system wherein the engine coolant is permitted to boil and the gaseous coolant used as a vehicle for removing heat from the engine, a heating jacket associated with the induction conduit of the engine is supplied with gaseous coolant via a control valve during cold engine starts and during modes of engine operation wherein it is advantageous from the view point of fuel economy to raise the temperature of the engine and/or the incoming fuel charge. The supply is terminated under other modes of operation to avoid heating the incoming charge and reducing charging efficiency.