CN112172477B - Defogging method and system for automobile front windshield - Google Patents
Defogging method and system for automobile front windshield Download PDFInfo
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- CN112172477B CN112172477B CN201910583498.1A CN201910583498A CN112172477B CN 112172477 B CN112172477 B CN 112172477B CN 201910583498 A CN201910583498 A CN 201910583498A CN 112172477 B CN112172477 B CN 112172477B
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- automobile
- front windshield
- defogging
- air conditioner
- demisting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
- B60J1/00—Windows; Windscreens; Accessories therefor
- B60J1/002—Windows; Windscreens; Accessories therefor with means for clear vision, e.g. anti-frost or defog panes, rain shields
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
- B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/023—Cleaning windscreens, windows or optical devices including defroster or demisting means
- B60S1/026—Cleaning windscreens, windows or optical devices including defroster or demisting means using electrical means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H2001/003—Component temperature regulation using an air flow
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The invention provides a defogging method for a front windshield of an automobile, which comprises the steps of obtaining a defogging operation instruction input by a user when the automobile is in an on-gear state and an engine runs normally on the automobile through a defogging system for the front windshield of the automobile and generating a switch state signal; after the switch state signal is judged to be valid, a demisting request instruction is generated; according to the defogging request instruction, detecting and passing a preset starting condition of the air conditioner compressor, and then generating an air conditioner compressor suction starting instruction; starting the air-conditioning compressor for refrigeration and demisting according to the suction starting instruction of the air-conditioning compressor, collecting the current rotating speed of the engine, and generating a relay suction starting instruction after judging that the current rotating speed of the engine is greater than a rotating speed threshold value; according to the relay actuation starting instruction, the electric conduction between the battery inside the automobile and the electric heating wire is realized to drive the electric heating wire to heat and demist. By implementing the invention, the defogging and electric heating defogging modes of the front windshield air conditioner are integrated, so that the power shortage risk of the battery can be effectively prevented, and independent equipment can be reduced, thereby saving the input cost.
Description
Technical Field
The invention relates to the technical field of automobiles, in particular to a defogging method and a defogging system for a front windshield of an automobile.
Background
In winter with lower temperature, the temperature difference is big round the clock and lead to very easily condensing into fog on the car door window, even freeze, frosting, influence the sight, consequently can generally use the air conditioner defogging in the front windshield, and the defogging is removed with the electrical heating to the back windshield. The air conditioner defogging needs the engine heating temperature to reach the effect best when 60, and the temperature often can not reach 60 when starting in the car that is in low temperature area (like northern area), leads to the front windshield to use certain fuel consumption that can increase when air conditioner defogging, and economic practicality is poor. Therefore, how to realize the heating control of the front windshield of the automobile has important significance.
At present, a lot of producers have developed the research of preceding wind window use electric heating defogging, increase many independent equipments in car bus communication generally and realize, can start preceding wind window electric heating defogging when the car is gone up the electricity and is located the on shelves, but if the user does not start the engine, then have insufficient voltage risk, influence battery life, simultaneously because of increasing too much independent equipment for the input cost increases.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a defogging method and a defogging system for a front windshield of an automobile, which integrate defogging modes of an air conditioner and an electric heating defogging mode for the front windshield, thereby not only effectively preventing the risk of power shortage of a battery, but also reducing independent equipment, and further saving the input cost.
In order to solve the technical problem, an embodiment of the present invention provides a defogging method for a front windshield of an automobile, which is used for controlling an air conditioner compressor preset in the automobile and an electric heating wire preset on the front windshield of the automobile to defogge the front windshield of the automobile through a defogging system for the front windshield of the automobile, and the method includes the following steps:
the automobile front windshield demisting system acquires a demisting operation instruction input by a user when an automobile is powered on at an on gear and an engine runs normally, and generates an on-off state signal according to the acquired demisting operation instruction;
after the automobile front windshield demisting system judges that the switch state signal is valid, a demisting request instruction is generated;
the automobile front windshield demisting system detects a preset starting condition of the air conditioner compressor according to the demisting request instruction, and generates an air conditioner compressor suction starting instruction after the air conditioner compressor suction starting instruction passes the detection success;
the automobile front windshield demisting system starts the air-conditioning compressor to refrigerate and demist an automobile front windshield according to the actuation starting instruction of the air-conditioning compressor, and acquires the current rotating speed of the engine;
after the automobile front windshield demisting system judges that the collected current rotating speed of the engine is greater than a rotating speed threshold value, a relay pull-in starting instruction is generated;
and the automobile front windshield demisting system realizes that the battery in the automobile is electrically conducted with the electric heating wires to drive the electric heating wires to heat and demist the automobile front windshield according to the relay attraction starting instruction.
Wherein the method further comprises:
and after the automobile front windshield defogging system judges that the switch state signal is valid, lightening an indicator lamp preset on the corresponding automobile when a user inputs a defogging operation instruction.
The automobile front windshield demisting system judges whether the switch state signal is effective or not through detecting the level of the switch state signal and the triggering time of the switch state signal; wherein the content of the first and second substances,
if the switch state signal is detected to be a low level signal and the trigger time is less than a threshold value, judging that the switch state signal is effective; otherwise, the switch state signal is judged to be invalid.
Wherein, the preset starting conditions of the air-conditioning compressor comprise:
the current air-conditioning pipeline pressure of the air-conditioning compressor is within a preset pressure range, the current evaporator temperature is greater than a first temperature threshold value, and the current external temperature is less than a second preset temperature threshold value.
The preset pressure range is 1.1-3.4 Mpa, the first temperature threshold is 40 degrees, and the second preset temperature threshold is 10 degrees.
Wherein the rotation speed threshold is 800 rpm.
The embodiment of the invention also provides a defogging system for the front windshield of the automobile, which is matched with an air conditioner compressor preset in the automobile and an electric heating wire preset on the front windshield of the automobile to defogge the front windshield of the automobile and comprises a defogging switch button, an air conditioner control panel, an air conditioner controller, an engine controller and a relay; wherein the content of the first and second substances,
the demisting switch button is used for acquiring a demisting operation instruction input by a user when the automobile is powered on and the engine runs normally, and generating a switch state signal according to the acquired demisting operation instruction;
the air conditioner control panel is used for generating a demisting request instruction after the switch state signal is judged to be effective;
the air conditioner controller is used for detecting a preset starting condition of the air conditioner compressor according to the demisting request instruction, and generating an air conditioner compressor suction starting instruction after the air conditioner compressor suction starting instruction passes the detection success; after the current rotating speed of the collected engine is judged to be greater than the rotating speed threshold value, a relay pull-in starting instruction is generated;
the engine controller is used for starting the air-conditioning compressor to refrigerate and demist a front windshield of the automobile according to the actuation starting instruction of the air-conditioning compressor and collecting the current rotating speed of the engine;
the relay is used for realizing the electric conduction between a battery in the automobile and the electric heating wires to drive the electric heating wires to heat and demist the front windshield of the automobile according to the relay actuation starting instruction.
The electric heating wires are arranged on two sides of a front windshield of the automobile respectively; the relay has two, and the control end of each relay all with air conditioner controller links to each other, the input all with car internal battery links to each other, and the output all links to each other with a corresponding electric heating wire.
Wherein, the preset starting conditions of the air-conditioning compressor comprise:
the current air-conditioning pipeline pressure of the air-conditioning compressor is within a preset pressure range, the current evaporator temperature is greater than a first temperature threshold value, and the current external temperature is less than a second preset temperature threshold value; the preset pressure range is 1.1-3.4 Mpa, the first temperature threshold is 40 degrees, and the second preset temperature threshold is 10 degrees.
Wherein the rotation speed threshold is 800 rpm.
The embodiment of the invention has the following beneficial effects:
according to the invention, the front windshield air conditioner demisting mode and the electric heating demisting mode are integrated, so that the problems of large fuel consumption and poor economic practicability existing in a single front windshield air conditioner demisting mode can be avoided, and the risks of large input cost and battery power shortage caused by excessive independent equipment existing in a single electric heating demisting mode can be avoided, therefore, the risk of battery power shortage can be effectively prevented, and the input cost can be saved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a defogging system for a front windshield of an automobile according to an embodiment of the present invention;
fig. 2 is a flowchart of a defogging method for a front windshield of an automobile according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, in an embodiment of the present invention, an automobile front windshield defogging system is provided, which cooperates with an air conditioner compressor M preset in an automobile and an electric heating wire L preset on an automobile front windshield to defogge (naturally, defrosting, deicing, etc.) the automobile front windshield, and includes a defogging switch button 1, an air conditioner control panel 2, an air conditioner controller 3, an engine controller 4, and a relay 5; wherein the content of the first and second substances,
the demisting switch button 1, the air conditioner control panel 2, the air conditioner controller 3 and the relay 5 are sequentially connected together, and the engine controller 4 is connected with the air conditioner controller 3; the input end of the relay 5 is connected with the air conditioner controller 3, the output end of the relay is connected with the electric heating wire L, the control end of the relay is connected with a battery (not shown) in the automobile, the relay 5 realizes the electric conduction between the battery in the automobile and the electric heating wire L in a suction mode to drive the electric heating wire L to heat, or realizes the disconnection between the battery in the automobile and the electric heating wire L in a disconnection mode to ensure that the electric heating wire L cannot heat; the engine controller 4 is also connected to the air-conditioning compressor M and an engine (not shown) respectively, and is used for controlling the start or stop of the air-conditioning compressor M and the acquisition of the engine speed;
the demisting switch button 1 acquires a demisting operation instruction input by a user when the automobile is powered on in an on gear and an engine runs normally, and generates an on-off state signal according to the acquired demisting operation instruction; the switch state signal is a low level signal or a high level signal;
after the switch state signal is judged to be valid, the air conditioner control panel 2 generates a demisting request instruction; whether the switch state signal is effective or not is realized by detecting the level of the switch state signal and the triggering time of the switch state signal; if the switch state signal is detected to be a low level signal and the trigger time is less than a threshold (such as 3s), determining that the switch state signal is valid; otherwise, judging that the switch state signal is invalid and not generating a demisting request instruction;
the air conditioner controller 3 detects the preset starting condition of the air conditioner compressor M according to the demisting request instruction, and generates an air conditioner compressor suction starting instruction after the air conditioner compressor M passes the successful detection; after the current rotating speed of the collected engine is judged to be greater than the rotating speed threshold value, a relay pull-in starting instruction is generated; specifically, the preset starting conditions of the air conditioner compressor M comprise that the current air conditioner pipeline pressure of the air conditioner compressor M is within a preset pressure range (such as 1.1-3.4 Mpa), the current evaporator temperature is greater than a first temperature threshold (such as 40 ℃) and the current external temperature is less than a second preset temperature threshold (such as 10 ℃ at low temperature), and the detection is determined to pass successfully as long as all the conditions are met; the rotating speed threshold is 800rpm, and as long as the rotating speed of the transmitter is greater than the rotating speed threshold of 800rpm, a relay pull-in starting instruction can be generated;
the engine controller 4 starts the air conditioner compressor M to refrigerate and demist a front windshield of the automobile according to an air conditioner compressor suction starting instruction, and acquires the current rotating speed of the engine;
the relay 5 realizes the electric conduction between the battery inside the automobile and the electric heating wire L according to the relay actuation starting instruction to drive the electric heating wire L to heat and demist the front windshield of the automobile.
It should be noted that the defogging switch button 1 may determine the high and low levels of the switch state signal by counting through a counter, for example, the switch state signal is recorded as a low level signal when the switch button is pressed an odd number of times, and conversely, the switch state signal is recorded as a high level signal when the switch button is pressed an even number of times. Meanwhile, in order to facilitate the user, after the air conditioner control panel 2 determines that the switch state signal is valid, the preset indicator lamp on the corresponding automobile is turned on when the user inputs the defogging operation instruction. I.e. the integrated panel indicator light of the defogging switch button 1 is lighted to remind the user that the defogging function is started.
It can be understood that, the design can be reversed, after the automobile front windshield demisting and defrosting are finished, the user presses the demisting switch 1 again (i.e. the counter counts for even times), so that the switch state signal becomes a high level signal, although the switch state signal is judged to be invalid in the air-conditioning control panel 2, the air-conditioning control panel 2 can generate a demisting shutdown instruction, the air-conditioning controller 3 directly sends a relay disconnection instruction to the relay 5 and sends an air-conditioning compressor disconnection instruction to the engine controller 4 according to the demisting shutdown instruction, so that the relay 5 disconnects the conduction between the automobile internal battery and the electric heating wire L according to the relay disconnection instruction to ensure that the electric heating wire L stops heating, and simultaneously, the engine controller 4 directly shuts down the air-conditioning compressor M for refrigeration according to the air-conditioning compressor disconnection instruction.
In the embodiment of the invention, two electric heating wires L are arranged, and the two electric heating wires L are respectively arranged at two sides of a front windshield of the automobile (namely two sides of the front windshield close to left and right doors); the relay 5 has two, and the control end of each relay 5 all links to each other with air conditioner controller 3, and the input all links to each other with car internal battery, and the output all links to each other with a corresponding electric heating wire L.
As shown in fig. 2, in an embodiment of the present invention, a defogging method for a front windshield of an automobile is provided, which is used for controlling an air conditioner compressor preset in the automobile and an electric heating wire preset on the front windshield of the automobile to defogge the front windshield of the automobile by using a defogging system for the front windshield of the automobile, and the method includes the following steps:
step S1, the automobile front windshield defogging system acquires a defogging operation instruction input by a user when the automobile is powered on and is in an on gear and the engine is in normal operation, and generates an on-off state signal according to the acquired defogging operation instruction;
step S2, after the automobile front windshield defogging system determines that the switch state signal is valid, a defogging request instruction is generated;
step S3, the automobile front windshield defogging system detects the preset starting condition of the air conditioner compressor according to the defogging request instruction, and generates an air conditioner compressor suction starting instruction after the preset starting condition of the air conditioner compressor passes the successful detection;
step S4, the automobile front windshield demisting system starts the air conditioner compressor to refrigerate and demist the automobile front windshield according to the actuation starting instruction of the air conditioner compressor, and acquires the current rotating speed of the engine;
step S5, after the automobile front windshield defogging system judges that the collected current rotating speed of the engine is greater than a rotating speed threshold value, a relay pull-in starting instruction is generated;
and S6, the automobile front windshield demisting system achieves electric conduction between an automobile internal battery and the electric heating wire to drive the electric heating wire to heat and demist the automobile front windshield according to the relay attraction starting instruction.
Wherein the method further comprises:
and after the automobile front windshield defogging system judges that the switch state signal is effective, the automobile front windshield defogging system lights up an indicator lamp preset on the corresponding automobile when a user inputs a defogging operation instruction, namely lights up an integrated panel indicator lamp.
The automobile front windshield demisting system judges whether the switch state signal is effective or not through detecting the level of the switch state signal and the triggering time of the switch state signal; if the switch state signal is detected to be a low level signal and the trigger time is less than a threshold value, determining that the switch state signal is valid; otherwise, the switch state signal is judged to be invalid.
Wherein, the preset starting conditions of the air-conditioning compressor comprise: the current air-conditioning pipeline pressure of the air-conditioning compressor is within a preset pressure range, the current evaporator temperature is greater than a first temperature threshold value, and the current external temperature is less than a second preset temperature threshold value; the preset pressure range is 1.1-3.4 Mpa, the first temperature threshold is 40 degrees, and the second preset temperature threshold is 10 degrees.
Wherein the rotation speed threshold is 800 rpm.
The embodiment of the invention has the following beneficial effects:
according to the invention, the front windshield air conditioner demisting mode and the electric heating demisting mode are integrated, so that the problems of large fuel consumption and poor economic practicability existing in a single front windshield air conditioner demisting mode can be avoided, and the risks of large input cost and battery power shortage caused by excessive independent equipment existing in a single electric heating demisting mode can be avoided, therefore, the risk of battery power shortage can be effectively prevented, and the input cost can be saved.
It will be understood by those skilled in the art that all or part of the steps in the method for implementing the above embodiments may be implemented by relevant hardware instructed by a program, and the program may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc.
The above disclosure is only for the purpose of illustrating the preferred embodiments of the present invention, and it is therefore to be understood that the invention is not limited by the scope of the appended claims.
Claims (10)
1. A defogging method for an automobile front windshield is characterized by being used for controlling an air conditioner compressor preset in an automobile and an electric heating wire preset on the automobile front windshield to defogge the automobile front windshield through an automobile front windshield defogging system, and comprises the following steps:
the automobile front windshield demisting system acquires a demisting operation instruction input by a user when an automobile is powered on at an on gear and an engine runs normally, and generates an on-off state signal according to the acquired demisting operation instruction;
after the automobile front windshield demisting system judges that the switch state signal is valid, a demisting request instruction is generated;
the automobile front windshield demisting system detects a preset starting condition of the air conditioner compressor according to the demisting request instruction, and generates an air conditioner compressor suction starting instruction after the air conditioner compressor suction starting instruction passes the detection success;
the automobile front windshield demisting system starts the air-conditioning compressor to refrigerate and demist an automobile front windshield according to the actuation starting instruction of the air-conditioning compressor, and acquires the current rotating speed of the engine;
after the automobile front windshield demisting system judges that the collected current rotating speed of the engine is greater than a rotating speed threshold value, a relay pull-in starting instruction is generated;
and the automobile front windshield demisting system realizes that the battery in the automobile is electrically conducted with the electric heating wires to drive the electric heating wires to heat and demist the automobile front windshield according to the relay attraction starting instruction.
2. The method of defogging a front windshield of an automobile according to claim 1, wherein said method further comprises:
and after the automobile front windshield defogging system judges that the switch state signal is valid, lightening an indicator lamp preset on the corresponding automobile when a user inputs a defogging operation instruction.
3. The defogging method for the front windshield of the automobile as recited in claim 1 or 2, wherein the determination of whether the switch state signal is effective is realized by detecting the level of the switch state signal and the triggering time thereof; wherein the content of the first and second substances,
if the switch state signal is detected to be a low level signal and the trigger time is less than a threshold value, judging that the switch state signal is effective; otherwise, the switch state signal is judged to be invalid.
4. The defogging method for the front windshield of an automobile as recited in claim 1, wherein said preset starting condition of said air conditioner compressor comprises:
the current air-conditioning pipeline pressure of the air-conditioning compressor is within a preset pressure range, the current evaporator temperature is greater than a first temperature threshold value, and the current external temperature is less than a second preset temperature threshold value.
5. The defogging method for the front windshield of an automobile as recited in claim 4, wherein said predetermined pressure range is 1.1-3.4 Mpa, said first temperature threshold is 40 degrees, and said second predetermined temperature threshold is 10 degrees.
6. The method of defogging an automobile windshield according to claim 1, wherein said threshold rotation speed is 800 rpm.
7. A defogging system for a front windshield of an automobile is characterized in that the defogging system is matched with an air conditioner compressor preset in the automobile and an electric heating wire preset on the front windshield of the automobile to defogge the front windshield of the automobile, and comprises a defogging switch button, an air conditioner control panel, an air conditioner controller, an engine controller and a relay; wherein the content of the first and second substances,
the demisting switch button is used for acquiring a demisting operation instruction input by a user when the automobile is powered on and the engine runs normally, and generating a switch state signal according to the acquired demisting operation instruction;
the air conditioner control panel is used for generating a demisting request instruction after the switch state signal is judged to be effective;
the air conditioner controller is used for detecting a preset starting condition of the air conditioner compressor according to the demisting request instruction, and generating an air conditioner compressor suction starting instruction after the air conditioner compressor suction starting instruction passes the detection success; after the current rotating speed of the collected engine is judged to be greater than the rotating speed threshold value, a relay pull-in starting instruction is generated;
the engine controller is used for starting the air-conditioning compressor to refrigerate and demist a front windshield of the automobile according to the actuation starting instruction of the air-conditioning compressor and collecting the current rotating speed of the engine;
the relay is used for realizing the electric conduction between a battery in the automobile and the electric heating wires to drive the electric heating wires to heat and demist the front windshield of the automobile according to the relay actuation starting instruction.
8. The defogging system for the front windshield of a vehicle as recited in claim 7, wherein there are two of said electric heating wires, and said two electric heating wires are respectively disposed on both sides of the front windshield of the vehicle; the relay has two, and the control end of each relay all with air conditioner controller links to each other, the input all with car internal battery links to each other, and the output all links to each other with a corresponding electric heating wire.
9. The defogging system for front windshield of a vehicle as recited in claim 7, wherein said preset starting condition of said air conditioner compressor comprises:
the current air-conditioning pipeline pressure of the air-conditioning compressor is within a preset pressure range, the current evaporator temperature is greater than a first temperature threshold value, and the current external temperature is less than a second preset temperature threshold value; the preset pressure range is 1.1-3.4 Mpa, the first temperature threshold is 40 degrees, and the second preset temperature threshold is 10 degrees.
10. The automotive front windshield defogging system recited in claim 7 wherein said threshold rotational speed is 800 rpm.
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JP5786809B2 (en) * | 2012-06-29 | 2015-09-30 | 株式会社デンソー | Electric vehicle air conditioner |
CN102991440B (en) * | 2012-11-14 | 2015-04-08 | 浙江吉利汽车研究院有限公司杭州分公司 | Automobile automatic defogging system and control method thereof |
FR3048215B1 (en) * | 2016-02-26 | 2019-07-05 | Valeo Systemes Thermiques | METHOD FOR AUTOMATED MANAGEMENT OF WINDOW GLAZING OF A MOTOR VEHICLE, BY AN AIR CONDITIONING SYSTEM AND BY ELECTRIC HEATING |
CN107344543A (en) * | 2017-07-05 | 2017-11-14 | 奇瑞汽车股份有限公司 | A kind of automobile automatic defrosting system and method |
CN107458176A (en) * | 2017-07-31 | 2017-12-12 | 北京新能源汽车股份有限公司 | A kind of air-conditioner control system, operation method and electric automobile |
CN107985016A (en) * | 2017-12-28 | 2018-05-04 | 北京汽车研究总院有限公司 | A kind of back vehicle windshield glass heating control apparatus and there is its vehicle |
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