CN203614197U - An engine cooling device - Google Patents
An engine cooling device Download PDFInfo
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- CN203614197U CN203614197U CN201320740668.0U CN201320740668U CN203614197U CN 203614197 U CN203614197 U CN 203614197U CN 201320740668 U CN201320740668 U CN 201320740668U CN 203614197 U CN203614197 U CN 203614197U
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- engine
- hose
- water
- heater cores
- radiator
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- 238000001816 cooling Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 233
- 239000000110 cooling liquid Substances 0.000 abstract description 31
- 238000000034 method Methods 0.000 abstract description 5
- 230000004323 axial length Effects 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 description 7
- 238000010438 heat treatment Methods 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 239000002826 coolant Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
To solve the problem that the increase of the axial length of an engine and the arrangement difficulty of a gear train caused by warm-up of an automobile engine result in complex process and high cost of the engine, the utility model provides an engine cooling device. The engine cooling device comprises a valve body which is arranged on a water return manifold and is arranged between a water outlet hose of a warm air core body and a water outlet hose of an auxiliary water tank. The valve body is arranged on the water return manifold, so that the rapid warp-up of the engine in the cold state is free of the cooling liquid circulation of any circuit, the rapid warm-up function is achieved and the cold state work time of the engine is reduced. The engine cooling device is simple in structure and low in cost.
Description
Technical field
The utility model relates to motor car engine field, relates in particular to a kind of engine cooling apparatus.
Background technique
Conventional vehicles is in the time of engine start, engine water pump, along with crankshaft rotating, drives cooling liquid in engine interior and short circle pipe passage, to continue circulation, warm-up period that need to be longer in the time that ambient temperature is lower, to affect vehicular discharge, aggravation engine scuffing.
For the long problem of this warm-up period, the engine water pump of existing a kind of scheme is in engine water pump, to increase diaphragm-connecting rod-seal dissepiment device, an external pipeline leads to air-distributor vacuum pipe, and a solenoid valve is installed on pipeline for pilot line break-make.In the time that motor needs rapid warming-up, open solenoid valve, under air-intake negative-pressure effect, diaphragm expands and promotes seal dissepiment by connecting rod, and seal dissepiment is shut pump outlet, and liquid circulation is obstructed, and accelerates warming-up; In the time that motor needs liquid circulation, closed electromagnetic valve vacuum line, diaphragm opposite side is provided with spring, and under the thrust of spring, diaphragm shrinks, and pulls seal dissepiment by connecting rod, and pump outlet is opened, and cooling liquid is recovered normal circulation.
There is following problem in the engine water pump of this scheme: the engine water pump inside of this scheme has increased diaphragm, connecting rod, seal dissepiment, caused the increase of motor axial length and train to arrange difficulty, thereby make the complex process of motor, cost high.
Model utility content
Cause when the warming-up increase of motor axial length and train to arrange difficulty for solving existing motor car engine, thereby make the high problem of complex process, cost of motor, it is a kind of for engine cooling apparatus that the utility model provides.
It is as follows that the utility model solves the problems of the technologies described above adopted technological scheme:
A kind of engine cooling apparatus is provided, comprises: water pump, thermostat, radiator, heater cores, engine water jacket, secondary water tank, return main, hose, radiator inlet, radiator outlet hoese, heater cores delivery hose, heater cores delivery hose, secondary water tank delivery hose and secondary water tank water intake flexible pipe; The water outlet of described water pump is connected with described engine water jacket water intake, and its water intake is connected with described return main; Described radiator one end is connected with described engine water jacket water outlet by described hose, radiator inlet, and its other end is connected with described return main by described radiator outlet hoese; Described heater cores one end is connected with described engine water jacket water outlet by described heater cores water supply hose, and its other end is connected with described return main by described heater cores delivery hose and radiator outlet hoese connects; Described secondary water tank one end is connected with described return main by described secondary water tank delivery hose, and its other end is connected with described hose, radiator inlet by described secondary water tank water intake flexible pipe; Described thermostat is arranged on described return main, radiator outlet hoese and heater cores delivery hose intersection; Also comprise a valve body, it is upper that described valve body is arranged on described return main, and between described heater cores delivery hose and secondary water tank delivery hose.
According to the utility model engine cooling apparatus, by a valve body being set on described return main 7, described valve body is between described heater cores delivery hose and secondary water tank delivery hose, as engine electronic control unit (Electronic Control Unit, ECU) detect that the ambient temperature of motor is lower, and motor is while needing under cold machine rapid heating, by controlling described valve body, realize closing or opening described return main, in the time that described valve body is closed described return main, described water pump cannot draw water in described radiator and described heater cores, now, described water pump can only be taken out cooling liquid by described secondary water tank delivery hose and enter described engine water jacket from described secondary water tank, and cooling liquid in described engine water jacket enters described secondary water tank water intake flexible pipe by the exhaust port on described hose, radiator inlet and heater cores water supply hose, and by described secondary water tank water intake flexible pipe, the cooling liquid in described engine water jacket is transported in described secondary water tank, thereby complete waterway circulating.Because the gas exhaust piping of described secondary water tank water intake flexible pipe is very thin and built-in throttle valve, circular flow in this waterway circulating is smaller and can keep lower cooling liquid low speed to flow, simultaneously, heat exchanger is not set in this waterway circulating, thereby smaller on engine cold accumulation of heat loss impact, avoid the phenomenon of motor local superheating with respect to prior art, the engine cooling apparatus that the utility model provides, described valve body is arranged on described return main, and between described heater cores delivery hose and secondary water tank delivery hose, by driving described valve body, realize closing described return main, thereby guarantee motor liquid circulation without any loop when rapid warming-up under cold machine state, to realize rapid warming-up function, reduce the engine cold state operating time, and described engine cooling apparatus is simple in structure, cost is low.
Preferably, described valve body comprises the valve that is arranged in described return main and is arranged on described return main outside and closes or open described return main's driving mechanism for driving described valve to rotate.
Preferably, on described valve, be provided with central axis hole, described valve body also comprises the rotating shaft being plugged in described central axis hole, and the two ends of described rotating shaft are all stretched out driving mechanism described in described central axis hole axle and driven rotation.
Preferably, described hose, radiator inlet is provided with an air outlet hole.
Preferably, described heater cores water supply hose is provided with an air outlet hole.
Preferably, described hose, radiator inlet is connected with described heater cores water supply hose, and described hose, radiator inlet is all connected with described engine water jacket water outlet with described heater cores water supply hose.
Preferably, the utility model also provides a kind of automobile, and it has the engine cooling apparatus described in any one in the claims.
Accompanying drawing explanation
Fig. 1 is the structural representation of the cooling device for automobile engine that provides of the utility model one embodiment.
Fig. 2 is the schematic diagram of valve body open mode in the cooling device for automobile engine that provides of Fig. 1.
Fig. 3 is the schematic diagram of valve body closed condition in the cooling device for automobile engine that provides of Fig. 1.
Fig. 4 is the local enlarged diagram in A place in Fig. 1.
Wherein, 1, water pump; 2, thermostat; 3, radiator; 4, heater cores; 5, engine water jacket; 6, secondary water tank; 7, return main; 8, hose, radiator inlet; 9, radiator outlet hoese; 10, heater cores water supply hose; 11, heater cores delivery hose; 12, secondary water tank delivery hose; 13, secondary water tank water intake flexible pipe; 14, valve body; 15, valve; 16, driving mechanism; 17, rotating shaft; 18, central axis hole.
Embodiment
Clearer for technical problem, technological scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 1, Figure 2 and Figure 3, the utility model provides a kind of engine cooling apparatus, comprising: water pump 1, thermostat 2, radiator 3, heater cores 4, engine water jacket 5, secondary water tank 6, return main 7, hose, radiator inlet 8, radiator outlet hoese 9, heater cores delivery hose 10, heater cores delivery hose 11, secondary water tank delivery hose 12 and secondary water tank water intake flexible pipe 13; The water outlet of described water pump 1 is connected with described engine water jacket 5 water intakes, and its water intake is connected with described return main 7; Described radiator 3 one end are connected with described engine water jacket 5 water outlets by described hose, radiator inlet 8, and its other end is connected with described return main 7 by described radiator outlet hoese 9; Described heater cores 4 one end are connected with described engine water jacket 5 water outlets by described heater cores water supply hose 10, and its other end is connected with described return main 7 by described heater cores delivery hose 11 and radiator outlet hoese 9 connects; Described secondary water tank 6 one end are connected with described return main 7 by described secondary water tank delivery hose 12, and its other end is connected with described hose, radiator inlet 8 by described secondary water tank water intake flexible pipe 13; Described thermostat 3 is arranged on described return main 7, radiator outlet hoese 9 and heater cores delivery hose 11 intersections; Also comprise a valve body 14, described valve body 14 is arranged on described return main 7, and between described heater cores delivery hose 11 and secondary water tank delivery hose 12.
According to the utility model engine cooling apparatus, by a valve body 14 is set on described return main 7, described valve body 14 is between described heater cores delivery hose 11 and secondary water tank delivery hose 12, engine electronic control unit detects that the ambient temperature of motor is lower, when motor needs under cold machine rapid heating, by controlling described valve body 14, realize closing described return main 7, in the time that described valve body 14 is closed described return main 7, described water pump 1 cannot draw water in described radiator 3 and described heater cores 4, now, described water pump 1 can only be taken out cooling liquid by described secondary water tank delivery hose 12 and enter described engine water jacket 5 from described secondary water tank 6, and cooling liquid in described engine water jacket 5 enters described secondary water tank water intake flexible pipe 13 by the exhaust port on described hose, radiator inlet 8 and heater cores water supply hose 10, and be transported in described secondary water tank 6 by described secondary water tank water intake flexible pipe 13, thereby complete waterway circulating.Because the gas exhaust piping of described secondary water tank water intake flexible pipe 13 is very thin and built-in throttle valve, circular flow in this waterway circulating is smaller and can keep lower cooling liquid low speed to flow, simultaneously, heat exchanger is not set in this waterway circulating, thereby smaller on engine cold accumulation of heat loss impact, avoid the phenomenon of motor local superheating.With respect to prior art, the engine cooling apparatus that the utility model provides, described valve body 14 is arranged on described return main 7, and between described heater cores delivery hose 11 and secondary water tank delivery hose 12, by driving described valve body 14, realize closing described return main 7, thereby guarantee motor liquid circulation without any loop when rapid warming-up under cold machine state, to realize rapid warming-up function, reduce the engine cold state operating time, and described engine cooling apparatus is simple in structure, cost is low.
As the preferred mode of one, described valve body 14 comprises the valve 15 being arranged in described return main 7 and is arranged on described return main 7 outsides closes or opens described return main's 7 driving mechanism 16 for driving described valve 15 to rotate.When engine start organic electronic control unit detects that the ambient temperature of motor is lower, and motor is while needing under cold machine rapid heating, by controlling described valve body 14, realize closing or opening described return main 7, in the time that described valve body 14 is closed described return main 7, described water pump 1 cannot draw water in described radiator 3 and described heater cores 4, now, described water pump 1 can only be taken out cooling liquid by described secondary water tank delivery hose 12 and enter described engine water jacket 5 from described secondary water tank 6, and cooling liquid in described engine water jacket 5 enters described secondary water tank water intake flexible pipe 13 by the exhaust port on described hose, radiator inlet 8 and heater cores water supply hose 10, and by described secondary water tank water intake flexible pipe 13, the cooling liquid in described engine water jacket 5 is transported in described secondary water tank 6, thereby complete waterway circulating, guaranteed motor at cold machine state the liquid circulation without any loop.
As the preferred mode of one, on described valve 15, be provided with central axis hole 18, described valve body 14 also comprises the rotating shaft 17 being plugged in described central axis hole 18, the two ends of described rotating shaft 17 are all stretched out driving mechanism 16 described in described central axis hole 18 axle and are driven rotation.For guarantee motor can cold machine under rapid heating, by controlling described valve body 14, realize closing or opening described return main 7, on described valve 15, be provided with central axis hole 18, described valve body 14 also comprises the rotating shaft 17 being plugged in described central axis hole 18, the two ends of described rotating shaft 17 are all stretched out driving mechanism 16 described in described central axis hole 18 axle and are driven rotation, in the time that described valve body 14 need to be closed described return main 7, described driving mechanism 16 drives described rotating shaft 17 to rotate, the rotation that rotarily drives described valve 15 of described rotating shaft 17, to close described return main 7, now, short circle and the major cycle of motor have all been closed, described water pump 1 cannot draw water in described radiator 3 and described heater cores 4, described water pump 1 can only be taken out cooling liquid by described secondary water tank delivery hose 12 and enter described engine water jacket 5 from described secondary water tank 6, and cooling liquid in described engine water jacket 5 enters described secondary water tank water intake flexible pipe 13 by the exhaust port on described hose, radiator inlet 8 and heater cores water supply hose 10, and by described secondary water tank water intake flexible pipe 13, the cooling liquid in described engine water jacket 5 is transported in described secondary water tank 6, thereby complete waterway circulating.In the time that engine start organic electronic control unit detects that described valve body 14 need to be opened, described driving mechanism 16 drives described rotating shaft 17 to rotate, the rotation that rotarily drives described valve 15 of described rotating shaft 17, to open described return main 7, now motor enters short circle operating mode.
As the preferred mode of one, described hose, radiator inlet 8 is provided with an air outlet hole, and described heater cores water supply hose 10 is provided with an air outlet hole.In the time that motor is heat engine major cycle working state, described water pump 1 take out cooling liquid by coolant pump in described engine water jacket 5, separating flow through described radiator 3 and described heater cores 4 of two-way through engine water outlet collects and flows into described return main 7, and flow into described water pump 1, simultaneously, motor is discharged to the gas in described engine water jacket 5 in described secondary water tank water intake flexible pipe 13 by the air outlet hole on described heater cores water supply hose 10 and described hose, radiator inlet 8, and by described secondary water tank water intake flexible pipe 13, this gas is discharged in described secondary water tank 6, complete waterway circulating, now, the overhead of this gas in described secondary water tank 6 casings.When motor is under cold machine state when rapid warming-up, described water pump 1 can only be taken out cooling liquid by described secondary water tank delivery hose 12 and enter engine water jacket 5 from secondary water tank 6, and by the exhaust port on described hose, radiator inlet 8 and described heater cores delivery hose 10, cooling liquid is transported to described secondary water tank water intake flexible pipe 13, and by described secondary water tank water intake flexible pipe 13, this cooling liquid is transported in described secondary water tank 6, to complete waterway circulating.
As the preferred mode of one, described hose, radiator inlet 8 is connected with described heater cores water supply hose 10, and described hose, radiator inlet 8 is all connected with described engine water jacket 5 water outlets with described heater cores water supply hose 10.For guarantee described water pump 1 take out cooling liquid by coolant pump in described engine water jacket 5, and separate two-way flow through radiator 3 and heater cores 4 through engine water jacket 5 water outlets, to complete the circulation in water route, described hose, radiator inlet 8 is connected with described heater cores water supply hose 10, and described hose, radiator inlet 8 is all connected with described engine water jacket 5 water outlets with described heater cores water supply hose 10.
As the preferred mode of one, the utility model also provides a kind of automobile, and it has the engine cooling apparatus described in any one in the claims.
The engine cooling apparatus that the utility model above-described embodiment provides, its working procedure under each pattern is as follows:
1, short circle pattern
For example, when engine water temperature lower (water temperature is lower than 70 ° of C) but while also not meeting described valve body 14 closed condition, described valve body 14 is in open mode, described thermostat 2 is in closed condition, now, the cooling liquid that described water pump 1 aspirates described heater cores delivery hose 11 and secondary water tank delivery hose 12 is pooled in described return main 7, and by coolant pump in described engine water jacket 5, complete the normal short circle of motor by described heater cores delivery hose 11, because described thermostat 2 is in closed condition, cooling liquid only circulates at engine interior, and do not circulate by described radiator 3, so that motor reaches operating temperature fast.It is exactly more than motor short circle working state.
2, major cycle pattern
For example, in the time that engine temperature is higher (temperature of cooling liquid is higher than 86 ° of C), for the operation that guarantees that motor is good, need to give engine cooling, described in engine electronic control unit control, thermostat 2 is opened, make originally only identical with the cooling system of external engine at the lesser circulation of engine interior circulation, now, described valve body 14 is opened, described thermostat 2 is opened, described water pump 1 take out cooling liquid by coolant pump in described engine water jacket 5, separating flow through described radiator 3 and heater cores 4 of two-way through described engine water jacket 5 water outlets collects and flows into described return main 7, and flow into described water pump 1, simultaneously, described heater cores water supply hose 10, on hose, radiator inlet 8, be respectively equipped with an air outlet hole, motor is by described heater cores water supply hose 10, air outlet hole on hose, radiator inlet 8 is discharged to the gas in described engine water jacket 5 in described secondary water tank water intake flexible pipe 13, and this gas is arranged described in secondary water tank 6 by described secondary tank inlet pipe 13, thereby complete waterway circulating.It is exactly more than motor major cycle pattern.
3, large and small circulation " shut " mode"
The ambient temperature situation of the motor detecting according to engine start organic electronic control unit, in the time of the lower warm-up period that need to be longer of ambient temperature, described valve body 14 is closed, described thermostat 2 is in closed condition, and described water pump 1 cannot draw water in described radiator 3 and heater cores 4.Now, described water pump 1 can only be taken out cooling liquid by described secondary water tank delivery hose 12 and enter described engine water jacket 5 from described secondary water tank 6, and by the exhaust port on described hose, radiator inlet 8 and heater cores water supply hose 10, the cooling liquid in described engine water jacket 5 is transported in described secondary water tank water intake flexible pipe 13, and be transported in described secondary water tank 6 by described secondary water tank water intake flexible pipe 13, thereby complete waterway circulating.Because the gas exhaust piping of described secondary water tank water intake flexible pipe 13 is very thin and built-in throttle valve, circular flow in this waterway circulating is smaller and can keep lower cooling liquid low speed to flow, simultaneously, heat exchanger is not set in this waterway circulating, thereby smaller on engine cold accumulation of heat loss impact, avoid the phenomenon of motor local superheating, guarantee motor liquid circulation without any loop when rapid warming-up under cold machine state, to realize rapid warming-up function, reduce the engine cold state operating time.Meanwhile, when engine start organic electronic control unit detects in the situation of described valve body 14 in opening, can control described valve body 14 and open in time, thereby enter short circle mode of operation.
The utility model above-described embodiment provide for closing automobile motor small-size circulating device, by a valve body 14 is set on described return main 7, described valve body 14 is between described heater cores delivery hose 11 and secondary water tank delivery hose 12, when engine start organic electronic control unit detects that the ambient temperature of motor is lower, when motor needs under cold machine rapid heating, by valve body 14, water pump 1 cannot be drawn water in radiator 3 and heater cores 4, now, water pump 1 can only be taken out cooling liquid by secondary water tank delivery hose 12 and enter engine water jacket 5 from secondary water tank 6, and by the exhaust port on described hose, radiator inlet 8 and radiator outlet hoese 9, the cooling liquid in described engine water jacket 5 is transported in described secondary water tank 6 by described secondary water tank water intake flexible pipe 13, complete waterway circulating, because the gas exhaust piping of described secondary water tank water intake flexible pipe 13 is very thin and built-in throttle valve, circular flow in this waterway circulating is smaller and can keep lower cooling liquid low speed to flow, simultaneously, heat exchanger is not set in this waterway circulating, thereby smaller on engine cold accumulation of heat loss impact, avoid the phenomenon of motor local superheating.With respect to prior art, the engine cooling apparatus that the utility model provides, valve body 14 is arranged on described return main 7, described valve body 14 is between described heater cores delivery hose 11 and secondary water tank delivery hose 12, can guarantee like this motor liquid circulation without any loop when rapid warming-up under cold machine state, to realize rapid warming-up function, reduce the engine cold state operating time, and simple in structure, cost is low.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. an engine cooling apparatus, comprising: water pump, thermostat, radiator, heater cores, engine water jacket, secondary water tank, return main, hose, radiator inlet, radiator outlet hoese, heater cores delivery hose, heater cores delivery hose, secondary water tank delivery hose and secondary water tank water intake flexible pipe;
The water outlet of described water pump is connected with described engine water jacket water intake, and its water intake is connected with described return main;
Described radiator one end is connected with described engine water jacket water outlet by described hose, radiator inlet, and its other end is connected with described return main by described radiator outlet hoese;
Described heater cores one end is connected with described engine water jacket water outlet by described heater cores water supply hose, and its other end is connected with described return main by described heater cores delivery hose and radiator outlet hoese connects;
Described secondary water tank one end is connected with described return main by described secondary water tank delivery hose, and its other end is connected with described hose, radiator inlet by described secondary water tank water intake flexible pipe;
Described thermostat is arranged on described return main, radiator outlet hoese and heater cores delivery hose intersection; It is characterized in that, also comprise a valve body, it is upper that described valve body is arranged on described return main, and between described heater cores delivery hose and secondary water tank delivery hose.
2. engine cooling apparatus as claimed in claim 1, it is characterized in that, described valve body comprises the valve being arranged in described return main and is arranged on described return main outside closes or opens described return main's driving mechanism for driving described valve to rotate.
3. engine cooling apparatus as claimed in claim 2, it is characterized in that, on described valve, be provided with central axis hole, described valve body also comprises the rotating shaft being plugged in described central axis hole, and the two ends of described rotating shaft are all stretched out driving mechanism described in described central axis hole axle and driven rotation.
4. engine cooling apparatus as claimed in claim 1, is characterized in that, described hose, radiator inlet is provided with an air outlet hole.
5. engine cooling apparatus as claimed in claim 1, is characterized in that, described heater cores water supply hose is provided with an air outlet hole.
6. engine cooling apparatus as claimed in claim 1, it is characterized in that, described hose, radiator inlet is connected with described heater cores water supply hose, and described hose, radiator inlet is all connected with described engine water jacket water outlet with described heater cores water supply hose.
7. an automobile, is characterized in that, it has the engine cooling apparatus described in any one in the claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740668.0U CN203614197U (en) | 2013-11-22 | 2013-11-22 | An engine cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320740668.0U CN203614197U (en) | 2013-11-22 | 2013-11-22 | An engine cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203614197U true CN203614197U (en) | 2014-05-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320740668.0U Expired - Lifetime CN203614197U (en) | 2013-11-22 | 2013-11-22 | An engine cooling device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203614197U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469543A (en) * | 2018-11-01 | 2019-03-15 | 安徽双桦热交换系统有限公司 | A kind of radiator working status monitoring system |
| CN112459889A (en) * | 2020-11-25 | 2021-03-09 | 东风汽车集团有限公司 | Engine cooling system and control method thereof |
-
2013
- 2013-11-22 CN CN201320740668.0U patent/CN203614197U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109469543A (en) * | 2018-11-01 | 2019-03-15 | 安徽双桦热交换系统有限公司 | A kind of radiator working status monitoring system |
| CN112459889A (en) * | 2020-11-25 | 2021-03-09 | 东风汽车集团有限公司 | Engine cooling system and control method thereof |
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| GR01 | Patent grant | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20140528 |