126 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 relates to the field of engineering machinery, and discloses a vehicle cooling system, a control device and a control method of the vehicle cooling system, and engineering machinery. The vehicle cooling system comprises a heat radiator, a first fan, a second fan, an engine cooling pipeline and a hydrodynamic retarder cooling pipeline, wherein the first fan is arranged in a first cooling area of the heat radiator; the second fan is arranged in a second cooling area of the heat radiator; the engine cooling pipeline is connected with the hydrodynamic retarder cooling pipe to form a cooling loop; and the cooling loop is provided with a cooling liquid outlet and a cooling liquid inlet which are respectively communicated with the outlet end and the inlet end of the heat radiator. Compared with the prior art, the cooling effect of the vehicle cooling system can meet cooling requirements under different situations, so that the cooling ability of the system can be guaranteed, the cooling efficiency of the system is improved, and unnecessary energy waste is avoided; in addition, the vehicle cooling system is low in cost and occupies a small space.

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 relates to a vehicle heat management system and a vehicle. The vehicle heat management system comprises an engine cooling loop, an air conditioner heating loop and a fluid switching device, an engine, a first water pump and a first radiator are arranged on the engine cooling loop, a heater, a second water pump and a warm air core body are arranged on the air conditioner heating loop,the engine cooling liquid loop is connected with the air conditioner heating loop through the fluid switching device, and the fluid switching device is used for controlling the engine cooling loop and the air conditioner heating loop to be selectively independent of each other or be in fluid communication with each other. According to the vehicle heat management system, fluid connection can be established between the engine cooling loop and the air conditioner heating loop, so that waste heat of the engine is reasonably utilized for heating the passenger compartment, the utilization rate of whole vehicle energy can be increased, and whole vehicle energy loss is reduced.

The invention discloses a whole vehicle thermal management system of a hybrid electric vehicle. The whole vehicle thermal management system comprises an expansion machine, a heat exchanger, a condenser, a water tank, a pump, a battery pack heat exchanger, a motor radiator, an engine cooling water jacket, an engine tail gas heat exchanger, a valve and other components, different system operation modes can be adjusted by controlling the opening and closing and the opening degree of the valve in a thermal management circuit, and connection in series/in parallel of an electric system and engine system thermal management branches is realized, the heat dissipation requirement and the preheating requirement are met, and the flow regulation of each branch is realized to adapt to thermal managementrequirements under different driving conditions of the hybrid electric vehicle. According to the whole vehicle thermal management system, the expansion machine, the condenser and the heat exchanger are simultaneously used, and waste heat recovery and utilization are realized. The heat exchanger is connected with an air conditioner/heat pump system to realize additional thermal management on a power system. The whole system is high in integration level, small in occupied space and wide in application working condition, and can effectively improve the energy utilization efficiency of the wholevehicle.

An engine coolant system includes a variable-opening valve having a plurality of tubes in fluid flow communication with an engine block and a radiator. The coolant system also includes an electrically-powered pump arranged to cycle coolant through the radiator and the engine block to regulate an engine temperature. The coolant system further includes a controller programmed to store a baseline relationship between pump speed and pump power draw using a nonlinear scale. The controller is also programmed to detect a steady state operating condition of the pump, and identify an operational relationship between real-time pump speed and a pump power draw. The controller is further programmed to detect a coolant leak based on a deviation between the baseline relationship and the operational relationship.

The invention relates to an engine cooling system with separately-arranged cylinder head and exhaust manifold water sleeves. The engine cooling system comprises a water pump, a cylinder water sleeve arranged inside a cylinder and connected and communicated with an outlet of the water pump, a cylinder head water sleeve arranged inside a cylinder head and communicated with the cylinder water sleeve through a cylinder gasket hole, a radiator, a fan heater and an engine oil cooler which are connected and communicated with a water outlet of the cylinder head of the cylinder head water sleeve, and a thermostat connected with the radiator, and further comprises the exhaust manifold water sleeve arranged inside the cylinder head. The exhaust manifold water sleeve is provided with an exhaust manifold water sleeve water inlet and an exhaust manifold water sleeve water outlet. The exhaust manifold water sleeve water inlet and the outlet of the water pump are directly connected and communicated. The exhaust manifold water sleeve water outlet is connected with the thermostat, and switching control is performed through actions of the thermostat. The radiator, the fan heater, the engine oil cooler and the exhaust manifold water sleeve are connected and communicated with the water inlet of the water pump through a water through pipe. The cylinder head water sleeve and the exhaust manifold water sleeve can be separated, and independent control over the exhaust manifold water sleeve can be achieved.

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.

A method for cooling the engine for the vehicle applying the turbocharger may include comparing an average fuel consumption amount that determines, by a control unit, for controlling the operation of the engine and the circulation of the coolant, whether an average fuel consumption amount consumed in the engine immediately before the start-off of the engine is greater than a predetermined after-start-up cooling entrance average fuel consumption amount when the vehicle is started-off after a high load operation, and maximally cooling that controls, by the control unit, so that the coolant cooled in a radiator is circulated into the engine and the turbocharger by maximally opening a thermostat for controlling, and operating a water pump, when the average fuel consumption amount consumed in the engine immediately before a start-off of the engine is greater than the predetermined after-start-up cooling entrance average fuel consumption amount in the comparing the average fuel consumption amount.

The invention belongs to the technical field of fuel cell vehicles, and discloses a whole vehicle cooling system of a fuel cell commercial vehicle, which comprises a fuel cell engine cooling subsystemand a driving motor cooling subsystem which are intensively arranged at the front end of a cabin, wherein the fuel cell engine cooling subsystem comprises a left radiator, a right radiator, a left electric fan, a right electric fan, a first electric water pump, a PTC heater, a temperature regulator and a fuel cell engine; the drive motor cooling subsystem comprises an intermediate motor radiator,a second electric water pump, a motor controller, a DCDC controller, a drive motor and a motor cooling fan arranged on one side of the intermediate motor radiator, wherein the intermediate motor radiator, the second electric water pump, the motor controller and the DCDC controller are connected in series. According to the system, two sets of independent cooling subsystems are used for carrying out thermal management on a fuel cell engine, a power motor, a motor controller and a DCDC of the fuel cell commercial vehicle respectively; the two subsystems are independently controlled and arrangedat the front end of a cabin in a centralized mode, and more energy is saved.