CN212671928U - Engine cooling system - Google Patents
Engine cooling system Download PDFInfo
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- CN212671928U CN212671928U CN202021189470.4U CN202021189470U CN212671928U CN 212671928 U CN212671928 U CN 212671928U CN 202021189470 U CN202021189470 U CN 202021189470U CN 212671928 U CN212671928 U CN 212671928U
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Abstract
The utility model provides an engine cooling system, which comprises a water pump, an engine body, a temperature adjusting device and a water tank, wherein the water pump, the engine body, the temperature adjusting device and the water tank are sequentially connected end to end in a waterway to form a cooling circulation; the second water outlet of the temperature adjusting device is communicated with the water pump to form a small engine cycle, the temperature adjusting device also comprises a low-opening temperature adjuster and a high-opening temperature adjuster, the low-opening temperature adjuster and the high-opening temperature adjuster are arranged in a water path in parallel, the water paths of the outlets of the low-opening temperature adjuster and the high-opening temperature adjuster are converged into one path to be connected to the water tank, the initial opening temperature of the high-opening temperature adjuster is higher than the initial opening temperature of the low-opening temperature adjuster, and the temperature sensor and the cooling fan are both connected with an engine ECU through wires; the utility model discloses the thermoregulator integrated design of two main and auxiliary different opening temperatures that take, multistage regulation engine circulation flow has increaseed the temperature regulation scope, can adapt to more harsh engine sudden change operating mode requirement.
Description
Technical Field
The utility model belongs to the technical field of the engine, especially, engine cooling system.
Background
With the increasing energy-saving requirement of the engine, the engine is required to maintain a proper working temperature. Conventional engine temperature control systems typically use a thermostat to control the temperature of the outgoing water.
The temperature range adjustable by the existing single-dependence temperature regulator is not wide enough, and the vehicle warming time is long in cold areas. The water-air cooling system disclosed in chinese patent CN109184895A comprises an engine water pump, a low temperature water tank, an engine internal circulation system and an air water cooler, wherein the engine internal circulation system comprises an oil cooler, a body and a cylinder head, a thermostat and an engine high temperature water tank, when the temperature of water entering the thermostat is higher than the opening temperature of the thermostat, the engine large circulation is opened, the engine small circulation is closed, water directly flows back to the high temperature water tank, enters the water pump after being cooled by a radiator in the high temperature water tank, when the temperature of water entering the thermostat is lower than the opening temperature of the thermostat, the engine small circulation is opened, the engine large circulation is closed, and water directly enters the water pump without passing through the high temperature water tank.
And cannot adapt to the rapidly changing requirements of different loads. The traditional engine water pump can only change along with the change of the rotating speed of the engine and can not change along with the change of load and water temperature.
Also for example, chinese patent CN206625887U discloses a thermostat for an engine, which comprises a thermostat base, a thermostat cover, and two thermostats. The thermostat base is provided with a cylinder cover water inlet cavity and a low-temperature water cavity, and two thermostat holes are formed in the thermostat base; the low-temperature water cavity is provided with two water outlet holes and a machine body water outlet. Two thermostats are installed respectively in the thermostat hole, and the thermostat has and closes the thermostat hole and open the first position of apopore and open the second position of thermostat hole and close the apopore.
The structure still has the improvement space, although two identical thermostats are adopted, the opening temperatures of the two thermostats are identical, and meanwhile, the flow of the water pump is regulated on and off only, and the regulating range of the cooling capacity of the cooling system is limited.
SUMMERY OF THE UTILITY MODEL
The utility model provides an engine cooling system, the thermostat integrated design of the temperature is opened to two main and auxiliary differences of taking, and multistage regulation engine circulation flow has increaseed the temperature regulation scope, can adapt to more harsh engine sudden change operating mode requirement.
The technical scheme of the utility model as follows:
an engine cooling system comprises a water pump, an engine body, a temperature adjusting device and a water tank, wherein water paths are sequentially connected end to form a cooling circulation; still including setting up radiator fan on the water tank side still is in including setting up the temperature sensor of attemperator's entry, attemperator's first delivery port with the water tank intercommunication constitutes the engine major cycle, attemperator's second delivery port with the water pump intercommunication constitutes the engine minor cycle, attemperator still includes low thermostat and the high thermostat of opening, low thermostat with the high parallelly connected setting of thermostat of opening is in the water route, low thermostat of opening with the export water route of high thermostat is converged and is connected to all the way the water tank, high thermostat is just opened the temperature and is greater than the just temperature of opening of low thermostat, temperature sensor and radiator fan all with engine ECU connection of electric lines.
Low thermosistor and high thermosistor of opening be the thermostat structure, adopt the height to open, the thermosistor integrated design of temperature is opened to two differences, and multistage regulation engine circulation flow has increaseed the temperature regulation scope, can adapt to more harsh engine sudden change operating mode requirement.
The utility model discloses more nimble than traditional control mode, can reach energy saving and consumption reduction, warm up car fast, quick loading's requirement.
Preferably, after the low-opening temperature regulator and the high-opening temperature regulator are initially opened, the flow rate increase rate at a lower water temperature is smaller than that at a higher water temperature, and the flow rate is adjusted by adopting a multi-section slope, the front section opening is small, and the rear end opening is large so as to adjust the temperature to just compensate the original defects.
Preferably, the utility model discloses still include with temperature sensor connection of electric lines's display for show the engine temperature, acquire the operating condition of engine in real time. The temperature sensor 5 can be electrically connected with an ECM (electronic control module) through a wire, the ECM is a short term engine electronic control module, has the functions of continuously monitoring and controlling the normal operation and known operation of the engine, and can provide the mixed gas with the optimal air-fuel ratio and the optimal ignition time for the engine according to different working conditions of the engine, so that the engine is always in the optimal working state, and the performance and the oil consumption of the engine are optimal.
Preferably, the initial opening temperatures of the low-opening temperature regulator and the high-opening temperature regulator are 83 ℃ and 88 ℃, and the full opening temperatures of the low-opening temperature regulator and the high-opening temperature regulator are 93 ℃ and 98 ℃ respectively. The combined design of the main and auxiliary temperature regulators with different opening temperatures is adopted, so that the control range is enlarged from 10 ℃ to 15 ℃, the temperature regulation range is enlarged, and the method can meet the more severe requirement of the sudden change working condition of the engine.
The utility model also provides a cooling method of engine adopts foretell engine cooling system, includes following step:
step 1: after the engine is started, the temperature adjusting device is not started at the moment, and the engine is cooled by adopting a small circulation;
step 2: when the water temperature reaches 83 ℃ along with the rising of the water temperature, the low-opening temperature regulator is initially opened, the engine is started for a large cycle, and the water temperature continues to rise until the low-opening temperature regulator is fully opened;
and step 3: when the water temperature reaches 88 ℃, the high-temperature thermostat is initially opened, and the water temperature continues to rise until the high-temperature thermostat is fully opened;
and 4, step 4: an engine ECU acquires signals of a temperature sensor, the water temperature continuously rises to 98 ℃ along with the continuous increase of the load of an engine, and the engine ECU controls a cooling fan to start working and keeps the water temperature stable in a balanced state; if the water temperature still continues to rise to exceed 105 ℃, entering step 5;
and 5: and (4) controlling an engine oil supply system to stop injecting oil by the engine ECU, recovering injecting oil when the water temperature is reduced to be below 102 ℃, and returning to the step 4.
The utility model has the advantages that:
1. the utility model discloses a high low is opened, and the thermoregulator integrated design of temperature is opened to two differences, and multistage regulation engine circulation flow has increaseed the temperature regulation scope, can adapt to more harsh engine sudden change operating mode requirement.
2. Compared with the traditional control mode, the control method is more flexible, and can meet the requirements of energy conservation, consumption reduction, quick vehicle warming and quick loading.
3. The fuel consumption of the partial load can be reduced. Under the condition of small load, the water temperature of the engine is stabilized at a higher level, and at the moment, a fan does not need to be turned on, and meanwhile, the working requirement of large load can be met.
Drawings
Fig. 1 is a schematic structural diagram of an engine cooling system according to the present invention.
Fig. 2 is a schematic diagram of the structure of the temperature adjusting device of the present invention.
Fig. 3 is a graph showing the relationship between the flow rate and the temperature when the low-opening thermostat of the present invention is in operation.
Fig. 4 is a schematic diagram of a small cycle operation when the thermostat device is not opened according to embodiment 3 of the present invention.
Fig. 5 is a working schematic diagram of the low-low temperature thermostat in embodiment 3 of the present invention when it is opened, and is in a large circulation condition at this time.
Fig. 6 is a working schematic diagram of the embodiment 3 of the present invention when both the low-temperature thermostat and the high-temperature thermostat are opened, and at this time, the two thermostats are in a large circulation condition.
In the figure: the system comprises a water pump 1, an engine body 2, a temperature adjusting device 3, a low-temperature regulator 301, a high-temperature regulator 302, a first water outlet 303, a second water outlet 304, a water tank 4, a temperature sensor 5, an engine ECU6, a heat radiating fan 7 and a display 8.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Example 1:
as shown in fig. 1, an engine cooling system comprises a water pump 1, an engine body 2, a temperature adjusting device 3 and a water tank 4, wherein water paths are sequentially connected end to form a cooling circulation; and a heat radiating fan 7 provided on a side surface of the water tank 4,
as shown in fig. 2, the present embodiment further includes a temperature sensor 5 disposed at the water inlet of the temperature adjusting device 3, the first water outlet 303 of the temperature adjusting device 3 is communicated with the water tank 4 to form a large engine cycle, the second water outlet 304 of the temperature adjusting device 3 is communicated with the water pump 1 to form a small engine cycle,
as shown in fig. 2, the temperature adjusting device 3 further includes a low-temperature-controller 301 and a high-temperature-controller 302, the low-temperature-controller 301 and the high-temperature-controller 302 are arranged in a water path in parallel, the outlet water paths of the low-temperature-controller 301 and the high-temperature-controller 302 are converged into one path and connected to the water tank 4, the initial temperature of the high-temperature-controller 302 is higher than the initial temperature of the low-temperature-controller 301, and the temperature sensor 5 and the cooling fan 7 are both connected to the engine ECU6 by wires.
The embodiment adopts the combination design of the temperature regulators with different opening temperatures by adopting high and low opening, adjusts the circulating flow of the engine in multiple stages, enlarges the temperature adjusting range and can adapt to the more rigorous requirement of the sudden change working condition of the engine.
Example 2:
as shown in fig. 1 and fig. 2, the engine cooling system of the present embodiment is applied to an inline six-cylinder diesel engine, and includes a water pump 1, an engine body 2, a temperature adjusting device 3 and a water tank 4, which are connected end to end in sequence via water paths to form a cooling cycle; the radiator fan is characterized by further comprising a radiator fan 7 arranged on the side face of the water tank 4, and the radiator fan 7 is used for cooling the water tank 4 at a high temperature so as to protect an engine.
The water pump system also comprises a temperature sensor 5 arranged at the water inlet of the temperature adjusting device 3, a first water outlet 303 of the temperature adjusting device 3 is communicated with the water tank 4 to form a large engine cycle, a second water outlet 304 of the temperature adjusting device 3 is communicated with the water pump 1 to form a small engine cycle,
as shown in fig. 2, the temperature adjusting device 3 further includes a low-side thermostat 301 and a high-side thermostat 302, both the low-side thermostat 301 and the high-side thermostat 302 are wax type thermostats, and the product is purchased from cargoes carvi component manufacturing ltd; the low-side thermostat 301 and the high-side thermostat 302 are configured as follows: the paraffin wax injection device comprises a shell, a spring, a valve and the like, wherein paraffin wax is arranged in the shell, the spring is sleeved on the shell, and the valve is arranged on the shell. The low-opening thermostat 301 and the high-opening thermostat 302 are arranged in a waterway in parallel, outlet waterways of the low-opening thermostat 301 and the high-opening thermostat 302 are converged into one waterway to be connected to the water tank 4, the initial opening temperature of the high-opening thermostat 302 is higher than the initial opening temperature of the low-opening thermostat 301, and two thermostats with opening temperatures are adopted to facilitate multi-gear adjustment;
the temperature sensor 5 and the cooling fan 7 are both connected with an engine ECU6 through electric wires, and the engine ECU6 receives signals from the temperature sensor 5, processes and generates instructions, and then controls the cooling fan 7 to be turned on and off so as to keep the temperature of the engine water constant.
Fig. 3 shows the change law of the working flow and the working temperature of the low-temperature thermostat 301, in this embodiment, after the low-temperature thermostat 301 is initially opened, the flow rate increase at a lower water temperature is smaller than the flow rate increase at a higher water temperature, and the flow rate is adjusted by adopting a multi-stage slope, the front-stage opening degree is small, and the rear-stage opening degree is large, so as to adjust the temperature to just compensate the original defects. The high-opening thermostat 302 also operates in the same manner as the low-opening thermostat 301.
In this embodiment, the utility model discloses still include with 5 connection by wire's of temperature sensor display 8 for show the engine temperature, acquire the operating condition of engine in real time.
In this embodiment, the initial opening temperatures of the low-opening temperature regulator 301 and the high-opening temperature regulator 302 are 83 ℃ and 88 ℃, and the full opening temperatures of the low-opening temperature regulator 301 and the high-opening temperature regulator 302 are 93 ℃ and 98 ℃, respectively. The combined design of the main and auxiliary temperature regulators with different opening temperatures is adopted, so that the control range is enlarged from 10 ℃ to 15 ℃, the temperature regulation range is enlarged, and the method can meet the more severe requirement of the sudden change working condition of the engine.
The working method of the engine cooling system in the embodiment comprises the following steps:
step 1: as shown in fig. 4, after the engine is started, the temperature adjusting device 3 is not started at this time, and the engine is cooled by adopting a small circulation;
step 2: as shown in fig. 5, as the water temperature rises, when the water temperature reaches 83 ℃, the low-temperature thermostat 301 is initially opened, the engine is started for a large cycle, and the water temperature continues to rise until the low-temperature thermostat 301 is fully opened;
and step 3: as shown in FIG. 6, as the water temperature continues to rise, when the water temperature reaches 88 deg.C, the high-start thermostat 302 is initially turned on, and the water temperature continues to rise until the high-start thermostat 302 is fully turned on;
and 4, step 4: the engine ECU6 acquires signals of the temperature sensor 5, the water temperature continues to rise to 95 ℃ along with the continuous increase of the load of the engine, and the engine ECU6 sends instructions to control the radiating fan 7 to start working and keep the water temperature stable in a balanced state; if the water temperature still continues to rise to exceed 105 ℃, entering step 5;
and 5: and the engine ECU6 sends out an instruction after receiving the signal of the temperature sensor 5, controls an engine oil supply system to stop oil injection, resumes oil injection when the water temperature is reduced to be below 102 ℃, and returns to the step 4.
The present invention has been described in detail with reference to the specific embodiments, which are only preferred embodiments of the present invention, but not limited thereto. Without departing from the principles of the present invention, all other embodiments obtained by any modification, equivalent replacement, or improvement on the matching manner, connection manner, and the like of the components in the hybrid power assembly structure by those skilled in the art without creative work should be considered as being within the technical scope protected by the present invention.
Claims (4)
1. An engine cooling system, characterized in that: the engine comprises a water pump (1), an engine body (2), a temperature adjusting device (3) and a water tank (4), wherein water paths are sequentially connected end to form a cooling circulation; the water pump type temperature control device is characterized by further comprising a cooling fan (7) arranged on the side face of the water tank (4), and further comprising a temperature sensor (5) arranged at a water inlet of the temperature adjusting device (3), wherein a first water outlet (303) of the temperature adjusting device (3) is communicated with the water tank (4) to form a large engine cycle, a second water outlet (304) of the temperature adjusting device (3) is communicated with the water pump (1) to form a small engine cycle, the temperature adjusting device (3) further comprises a low-opening temperature adjuster (301) and a high-opening temperature adjuster (302), the low-opening temperature adjuster (301) and the high-opening temperature adjuster (302) are arranged in a water channel in parallel, the low-opening temperature adjuster (301) and an outlet water channel of the high-opening temperature adjuster (302) are integrated into one channel and connected to the water tank (4), and the initial opening temperature of the high-opening temperature adjuster (302) is higher than the initial opening temperature of the low-opening temperature adjuster (, and the temperature sensor (5) and the cooling fan (7) are connected with an engine ECU (6) through wires.
2. An engine cooling system according to claim 1, characterized in that: the rate of increase of flow at lower water temperatures is less than the rate of increase of flow at higher water temperatures after initial actuation of the low-start thermostat (301) and the high-start thermostat (302).
3. An engine cooling system according to claim 1, characterized in that: and the display (8) is in wire connection with the temperature sensor (5).
4. An engine cooling system according to claim 1 or 2, characterized in that: the initial opening temperatures of the low-opening temperature regulator (301) and the high-opening temperature regulator (302) are 83 ℃ and 88 ℃, and the full opening temperatures of the low-opening temperature regulator (301) and the high-opening temperature regulator (302) are 93 ℃ and 98 ℃ respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021189470.4U CN212671928U (en) | 2020-06-23 | 2020-06-23 | Engine cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021189470.4U CN212671928U (en) | 2020-06-23 | 2020-06-23 | Engine cooling system |
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| CN212671928U true CN212671928U (en) | 2021-03-09 |
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| CN202021189470.4U Active CN212671928U (en) | 2020-06-23 | 2020-06-23 | Engine cooling system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810284A (en) * | 2020-06-23 | 2020-10-23 | 广西玉柴机器股份有限公司 | Engine cooling system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111810284A (en) * | 2020-06-23 | 2020-10-23 | 广西玉柴机器股份有限公司 | Engine cooling system and method |
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