134 results about "Radiator (engine cooling)" patented technology

The invention discloses an engine coolant waste heat utilization engine warming system adopting a solid-liquid phase change heat reservoir and a method of the engine coolant waste heat utilization engine warming system. The system comprises a temperature sensor, an electronic thermostat, an electronic fan, a radiator, the solid-liquid phase change heat reservoir, an electronic three-way valve and an MCU. Coolant flows through the phase change heat reservoir to heat phase change materials. The phase change happens to the phase change materials, the phase change materials absorb a large amount of latent heat, and residual heat of an engine is transferred into the phase change heat reservoir to be stored and used for starting engine warming. The electronic thermostat and the electronic three-way valve are controlled by the MCU and kept running synchronously all the time. The premise that normal work of an engine cooling system is not influenced is ensured. After the engine stops, large circulation is closed through the electronic thermostat and the electronic three-way valve. The phase change heat reservoir is sealed and enters the energy preservation state. Thus, under the condition that the existing engine power consumption is hardly increased, waste heat recycle is achieved. The engine warming starting process is achieved under the condition that the engine power consumption is not increased.

The invention discloses an automobile supercharged engine cooling system and a control method thereof. A radiator is divided by a partition plate into a high-temperature radiator and a low-temperature radiator. An inner water way of an engine cylinder body is divided into an exhaust side cylinder cover water way and a cylinder body and air inlet side cylinder cover water way, wherein the liquid inlet end of the exhaust side cylinder cover water way is connected with a mechanical water pump. The liquid inlet end of the exhaust side cylinder cover water way is provided with a first temperature adjuster connected with the liquid inlet end of the cylinder body and air inlet side cylinder cover water way. The liquid outlet end of the exhaust side cylinder cover water way and the liquid outlet end of the cylinder body and air inlet side cylinder cover water way are sequentially connected with a warm air core and an engine oil cooler through a first water return pipe, wherein the engine oil cooler is connected with the mechanical water pump. The first water return pipe is connected with a second water return pipe through a second temperature adjuster, and the second water return pipe is connected with the high-temperature radiator. The automobile supercharged engine cooling system comprises an electronic water pump, the electronic water pump is connected with the liquid inlet end of a turbine supercharger and the liquid inlet end of an intercooler, and the liquid outlet end of the turbine supercharger and the liquid outlet end of the intercooler are connected with the liquid inlet end of the low-temperature radiator. By means of the automobile supercharged engine cooling system and the control method thereof, engine cylinder body and cylinder cover cooling can be accurately controlled, and the cooling performance of various loops is achieved.

The invention provides a radiator plate-typed sealing strip assembly in an automobile engine cooling system and a manufacturing process thereof. The radiator plate-type sealing strip assembly in the automobile engine cooling system consists essentially of EPDM rubber, carbon black and the like; the manufacturing process mainly comprises the steps of: synthesizing rubber, sulfur treatment, trimming, two-process sulfur treatment, testing and putting into storage. The radiator plate-type sealing strip assembly manufactured by the process has good tensile strength at break, good elongation at break, good tear strength, good compression deformation and time effect of high-temperature resistance and cooling fluid resistance, thus ensuring good sealing property.

The invention discloses an engine water-flow testing measuring device. The engine water-flow testing measuring device comprises a variable-frequency and variable-speed motor, an engine water pump, an engine, a thermostat assembly, a heater, a first flow meter, a warm air part, an engine oil cooler, a second flow meter, a heat sink, a pressure sensor, a temperature sensor, a PLC heating controller, a variable-frequency motor controller and a data collecting system. The data collecting system measures the flow distribution of the warm air part according to flow signals collected by the first flow meter, and obtains the flow resistance of the engine water pump, the engine, the warm air part, the engine oil cooler and the heat sink according to pressure signals collected by the pressure sensor. According to the engine water-flow testing measuring device, a dynamometer and whole-vehicle resources do not need to be occupied; in the state that only a cooling system sample piece exists in the initial stage of development, the measurement of the flow distribution and the flow resistance of an engine cooling system can be completed in five workdays, the design problems of the cooling systems are exposed in advance, and development risks are reduced.

The invention discloses an automotive carpet radiant heating system. The automotive carpet radiant heating system comprises an automotive carpet, an automobile body floor, an engine cooling system, a flow regulating valve and a plurality of coiled radiators, wherein the engine cooling system comprises an engine, a radiator and a water pump; a water inlet of the water pump is connected to a coolant outlet of the engine through a pipeline, the plurality of coiled radiators are connected in parallel and arranged between the automotive carpet and the automobile body floor, an inlet of the flow regulating valve is connected to a water outlet of the water pump through a pipeline, a first outlet of the flow regulating valve is connected to a water inlet of the radiator through a pipeline, a water outlet of the radiator is connected to a coolant inlet of the engine through a pipeline, a second outlet of the flow regulating valve is connected to water inlets of the plurality of coiled radiators through pipelines, and water outlets of the plurality of coiled radiators are connected to the coolant inlet of the engine through pipelines. By means of the heating system, the temperature of the automotive carpet can be balanced, so that the temperature of the air in a carriage is evenly distributed, and the comfort is improved.

The invention provides a thermostat diagnosis method. Compared with the situation that an existing engine thermal management system possibly has certain defects in design for a vehicle of which the temperature rise of a second-channel water temperature sensor is obvious before a thermostat is started, under the conditions of not changing the structure of the existing thermal management system andnot increasing the hardware cost, according to the diagnosis method, the thermostat is subjected to diagnosis by calculating the difference between the one-channel water temperature and the two-channel water temperature, so that the reliability of the diagnosis is improved, the cost and workload for changing an engine thermal management system are saved, and the applicability to different engine heat management systems is high; besides, compared with the situation that installation is inconvenient and the installation cost is high due to the fact that an existing diagnosis strategy limits thesecond-channel water temperature sensor to be arranged on a radiator, according to the thermostat diagnosis method, the second-channel water temperature sensor only needs to be arranged at the position, adjacent to the thermostat, of a second cooling pipeline, so that installation is convenient, and the cost is low.

The invention discloses a one-dimensional and three-dimensional joint simulation method for an automobile engine cooling system. The method comprises the steps of using three-dimensional simulation software for estimating the thermal power of a radiator, an intercooler and a condenser, taking constant values as the thermal power of the condenser, and then obtaining the outlet air volume of a radiator core, the outlet air volume of the intercooler core and the surface temperature average value of a core inlet; performing one-dimensional system simulation calculation by utilizing one-dimensionalsimulation software based on the air volume and the temperature average value to obtain the thermal power of the radiator and the intercooler; obtaining outlet air volumes of a radiator core, an intercooler core and a condenser core and a surface temperature average value of a core inlet by using three-dimensional simulation software according to the thermal power of the radiator, the intercoolerand the condenser; and repeatedly executing the steps to perform iterative computation until convergence conditions are met. The advantages of the one-dimensional simulation software and the advantages of the three-dimensional simulation software are fully utilized, simulation errors caused by heat reflux are reduced through repeated iteration, and the simulation precision of the water temperature of the cooling system is improved.

Methods and systems are provided for expediting engine cooling while reducing the overall energy consumption of the engine cooling system's components. A first circulation pump is used to pump coolantthrough an engine block as a function of engine output while a second radiator pump is selectively operated when a thermostat valve is open to pump coolant through a radiator and the engine block toeffect the engine coolant temperature. Operation of the second pump is coordinated with the operation of a radiator cooling fan and grille shutters to improve radiator performance.

The invention provides a vehicle exterior temperature obtaining system and method. The vehicle exterior temperature obtaining system comprises a vehicle exterior temperature sensor, an engine cooling water temperature detector and a storing memory module, wherein the vehicle exterior temperature sensor, the engine cooling water temperature detector and the storing memory module are connected with a logical processing unit; and the logical processing unit and the storing memory module are arranged in an automatic air condition controller. The vehicle exterior temperature obtaining system and the method provided by the invention are executed. The method comprises the following steps of according to the logical comparison operation of the temperature value of cooling water, the value of the vehicle exterior temperature sensor and the memory value of the storing memory module, judging the cold starting condition and the hot starting condition of a vehicle when the vehicle is started, and obtaining the accurate vehicle exterior temperature. According to the vehicle exterior temperature obtaining system and the method disclosed by the invention, under a low-power dissipation situation that the automatic air conditioner controller cuts off own power supply, after reigniting is performed again for operating the vehicle, the cold-vehicle condition and the hot-vehicle condition of the vehicle can be accurately judged, the vehicle exterior temperature sensor can also be free from the influence of a radiator and a hot water tank, and an initial value of the vehicle exterior temperature which is close to the actual environmental temperature is obtained.

The invention discloses an engine cooling system which comprises a thermostat, a mechanical water pump, a radiator, a cylinder block water jacket, a cylinder cover water jacket and a warm air pipelinesubsystem, wherein the mechanical water pump, the cylinder block water jacket and the radiator form a complete water path circulation; the thermostat is arranged between the mechanical water pump andthe radiator and is used for controlling on-off between the mechanical water pump and the radiator; the cylinder block water jacket communicates with the cylinder cover water jacket; the water outletof the cylinder cover water jacket communicates with the water inlet of the warm air pipeline subsystem; the water outlet of the warm air pipeline subsystem communicates with the water inlet of the mechanical water pump; a first stop valve is arranged between the cylinder cover water jacket and the warm air pipeline subsystem and is used for controlling on-off between the cylinder cover water jacket and the warm air pipeline subsystem. When the engine is at a low temperature, the radiator and the warm air pipeline subsystem do not participate in circulation, and radiating devices are reduced,so that the engine can reach the normal working temperature as quickly as possible.

The invention relates to an engine cooling fan control method and system and an engine cooling system, and belongs to the technical field of engine heat management. The method comprises the following steps: 1) acquiring current environment temperature information and engine load state information; (2) the environment temperature grade of the current environment temperature is judged; judging the engine load state grade to which the current engine load state belongs; 3) matching a corresponding fan control interval according to the corresponding relationship among the environment temperature grade, the engine load state grade and the fan control interval; and 4) correspondingly adjusting the rotating speed of the radiator fan and/or correspondingly adjusting the rotating speed of the intercooler fan according to the set value of the matched fan control interval. The radiator fan and/or the intercooler fan can be correspondingly adjusted according to the current environment temperature and the load grade of the engine, the adaptability of the engine cooling system to the external environment and the vehicle load state can be improved, and it is guaranteed that the engine works in the optimal state.