CN101549712B - Active type engine compartment cover adjusting system - Google PatentsActive type engine compartment cover adjusting system Download PDF
- Publication number
- CN101549712B CN101549712B CN2009100506366A CN200910050636A CN101549712B CN 101549712 B CN101549712 B CN 101549712B CN 2009100506366 A CN2009100506366 A CN 2009100506366A CN 200910050636 A CN200910050636 A CN 200910050636A CN 101549712 B CN101549712 B CN 101549712B
- Prior art keywords
- engine compartment
- compartment cover
- drive motor
- leading screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
- 238000004891 communication Methods 0.000 claims description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 abstract 3
- 239000005357 flat glass Substances 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 7
- 230000001429 stepping Effects 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
The invention discloses an active type engine compartment cover adjusting system, which comprises an adjustable engine compartment cover, a cover supporting device, a transmission device, a driving motor and an electronic controlling means; the upper end of the cover supporting device is hinged to the adjustable engine compartment cover, the lower end is connected with the transmission device; the output shaft of the driving motor is connected with the transmission device; and the electronic controlling means is connected with the wire harness of the electric control unit. By adopting active mode to adjust the appearance structure of the engine compartment cover, the invention eliminates or reduces the air-swirl at the connection point of the engine compartment cover and the front window glass when the car traveling in high speed, thereby can reduce the air resistance in any speed, reduce fuel consumption.
The invention belongs to automobile technical field, relate to a kind of active type engine compartment cover adjusting system that can make vehicle under the different speed of a motor vehicle, initiatively reduce air resistance in particular.
According to the automobile theory research conclusion, the factor that influences the fuel consumption of automobile has following several main aspects: exercise rolling resistance, air resistance, engine combustion efficiency, drive line efficiency, current consumer expenditure of energy, the oil consumption of parking idling, braking energy loss etc.And shown according to research, when air resistance reduces by 10%, can improve oil consumption about 5～7%.Therefore the modern automobile designer can take into full account the influence of air resistance when the configuration design of automobile, reduces air resistance as far as possible.
Air resistance is divided into three types: pressure resistance, friction drag and induced drag.Pressure resistance is an air pressure head-on; When friction drag is automobile-exterior face and internal air passageway surface and air relative motion, by intermolecular fricative resistance; Before induced drag then is the car that is caused by the surperficial negative pressure that forms the eddy current position, the difference of pressure of rear and the resistance that forms.Though what automobile was had the greatest impact is pressure resistance, pressure resistance increases with the formation of eddy current.It between the preceding hatchcover of automobile and the windscreen one of important area that forms in eddy current.
At present, always people remove to reduce air resistance through optimizing the car conour design, still, in the automobile driving process, air resistance is directly proportional with aerodynamic drag factor and wind surface, and becomes big with speed of a motor vehicle rising resistance, and its computing formula is:
F w＝1/2*C DAρu r 2
C D---aerodynamic drag factor;
A---wind area, unit are m 2
ρ---density of air, general ρ=1.2258Ns 2M -4
u r---relative velocity, the moving velocity of automobile when calm, the m/s of unit.
Obvious by following formula, air resistance is directly proportional with the quadratic power of the speed of a motor vehicle, and high speed traveling is very obvious to the influence of exercising resistance.When the vehicle speed per hour greater than 80 kilometers/hour, air resistance has become the main resistance to motion of vehicle.Up to now, still do not have a kind of actv. design, can make vehicle under the different speed of a motor vehicle, initiatively reduce air resistance.
Fig. 1 is the aerodynamic analysis picture of certain vehicle, and wherein there is tangible eddy region engine compartment cover and windscreen junction, causes the air resistance of vehicle when high speed to increase, and the wind increase of making an uproar influences oil consumption.
But owing to reasons such as styling design requirement and driver's seats, can't change the profile of engine compartment cover, reach the angle that optimum aerodynamics requires.Because of air resistance only just can become the subject matter of car load oil consumption when the high speed, therefore, how when high speed, initiatively to adjust the engine compartment cover angle, reduce air resistance, become the technical barrier that those skilled in the art press for solution.
Summary of the invention
Technical matters to be solved by this invention provides a kind of active type engine compartment cover adjusting system, and the purpose that initiatively reduce air resistance to reach, reduces fuel oil consumption overcomes the above-mentioned defective that prior art exists.
The technical scheme of technical solution problem of the present invention is following:
A kind of active type engine compartment cover adjusting system is characterized in that, comprises adjustable type engines hatchcover, hatchcover bracing or strutting arrangement, driving device, drive motor and electronic control package;
Said hatchcover bracing or strutting arrangement upper end is hinged with the adjustable type engines hatchcover, and lower end and driving device are hinged;
The output shaft of said drive motor links to each other with driving device;
Said electronic control package is connected with vehicle electrically controlling unit wire harness.
Can know by above disclosed technical scheme; The present invention adopts the adjustable type engines hatchcover; Through the electronic system information search of vehicle self, the structure angle of ACTIVE CONTROL automobile body, the automatic surface structure of selecting optimum engine compartment cover under various running conditions of vehicle; Thereby change air resistance coefficient, the reduction oil consumption of automobile under the different speed of a motor vehicle, the stability of motion and the safety that improve vehicle.The present invention adjusts the surface structure of engine compartment cover through adopting the actv. mode; Eliminate or weaken that engine compartment cover and windscreen junction produce when the vehicle high speed driving airstream eddy current; Thereby the air resistance that vehicle is received when exercising with the high and low different speed of a motor vehicle can be minimum, reduces oil consumption.
Description of drawings
Fig. 1 vehicle aerodynamic analysis picture;
The structural representation of Fig. 2 active type engine compartment cover adjusting system of the present invention;
The work scheme drawing of Fig. 3 active type engine compartment cover adjusting system of the present invention;
Fig. 4 adopts the vehicle aerodynamic analysis picture after control system of the present invention is improved;
Fig. 5 electron steering policy map of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is done further explain.
Like Fig. 2, shown in 3, active type engine compartment cover adjusting system of the present invention comprises adjustable type engines hatchcover 1, hatchcover bracing or strutting arrangement 2, driving device 3, drive motor 4 and electronic control package 5; Said adjustable type engines hatchcover 1 comprises engine compartment cover front portion 11, machinery space postoperculum 12, and is hinged between said engine compartment cover anterior 11 and the machinery space postoperculum 12.Said hatchcover bracing or strutting arrangement 2 is a strut, and the upper end of said strut and machinery space postoperculum 12 are hinged.Said driving device 3 comprises leading screw 31 and leading screw slide block 32, and leading screw 31 moves forward and backward said leading screw slide block 32 in the driving lower edge of drive motor 6, and the lower end of said hatchcover bracing or strutting arrangement 2 and leading screw slide block 32 are hinged.
Said drive motor 4 is a stepping motor, can stepping motor be fixed on chassis runner 6 or other vehicle body retaining elements during use.The output shaft of drive motor 4 links to each other with the leading screw 31 of driving device 3;
As shown in Figure 5, said electronic control package 5 is connected with car load ECU wire harness, and it comprises car speed sensor 51, drive motor power supply 52 and hand switch 53, and said sensor 51 is arranged on the wheel 8.Said drive motor 4, drive motor power supply 52, hand switch 53 are connected through the car load wire harness with vehicle electrically controlling unit 7, constitute communication system.
Principle of work of the present invention is following: when car speed sensor 51 is sensed car speed and reached a certain setting speed; Vehicle electrically controlling unit 7 receives GES, according to preset parameters, sends control signal and gives stepping motor; Stepping motor drives leading screw 31 rotations; Leading screw 31 rotation backs drive leading screw slide block 32 and move, and cause hatchcover strut attitude to change after slide block 32 change in displacement, change thereby drive machinery space postoperculum 12 angles.Change through this, can optimize the aerodynamic drag factor of car load under friction speed, reach optimum vehicle oil consumption and tractive performance.The power supply of stepping motor can use on-vehicle battery.If navigating mate does not hope engine compartment cover is carried out automatic compensation, can close this system through hand switch 53.
For reaching the purpose of accuracy control, the propulsion source of this system also can use hydraulic efficiency pressure system to control.
Through adopting control system of the present invention, engine compartment cover and front windshield glass transition are adjusted into optimal angle, thereby such transition is convenient to the air rear of leading is as early as possible reduced the atmospheric pressure of front portion.Adjusted aerodynamic Drag Calculation model is as shown in Figure 4, and eddy region disappears.
1. an active type engine compartment cover adjusting system is characterized in that, comprises adjustable type engines hatchcover (1), hatchcover bracing or strutting arrangement (2), driving device (3), drive motor (4) and electronic control package (5);
Said adjustable type engines hatchcover (1) comprises engine compartment cover anterior (11), machinery space postoperculum (12), and is hinged between said engine compartment cover anterior (11) and the machinery space postoperculum (12);
Said hatchcover bracing or strutting arrangement (2) is a strut, and the upper end of said strut and machinery space postoperculum (12) are hinged, and lower end and driving device (3) are hinged;
The output shaft of said drive motor (4) links to each other with driving device (3);
Said electronic control package (5) is connected with vehicle electrically controlling unit wire harness;
Said electronic control package (5) comprises car speed sensor (51), drive motor power supply (52) and hand switch (53); Said sensor (51) is arranged on the wheel (8); Said car speed sensor (51) is connected with said vehicle electrically controlling unit (7); Said drive motor (4), drive motor power supply (52), hand switch (53) are connected through the car load wire harness with vehicle electrically controlling unit (7), constitute communication system.
2. active type engine compartment cover adjusting system according to claim 1; It is characterized in that; Said driving device (3) comprises leading screw (31) and leading screw slide block (32); Said leading screw slide block (32) moves forward and backward at the driving lower edge of drive motor (4) leading screw (31), and the lower end of said hatchcover bracing or strutting arrangement (2) and leading screw slide block (32) are hinged.
Priority Applications (1)
|Application Number||Priority Date||Filing Date||Title|
|CN2009100506366A CN101549712B (en)||2009-05-05||2009-05-05||Active type engine compartment cover adjusting system|
Applications Claiming Priority (1)
|Application Number||Priority Date||Filing Date||Title|
|CN2009100506366A CN101549712B (en)||2009-05-05||2009-05-05||Active type engine compartment cover adjusting system|
|Publication Number||Publication Date|
|CN101549712A CN101549712A (en)||2009-10-07|
|CN101549712B true CN101549712B (en)||2012-01-25|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|CN2009100506366A Expired - Fee Related CN101549712B (en)||2009-05-05||2009-05-05||Active type engine compartment cover adjusting system|
Country Status (1)
|CN (1)||CN101549712B (en)|
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|CN106043470A (en) *||2016-06-15||2016-10-26||桓大永||Automatic tilting type automobile spoiler device with speed brake device|
|US10486754B2 (en) *||2017-04-14||2019-11-26||Ford Global Technologies, Llc||Active hood vent system and method of adjusting aero balance of a motor vehicle|
|CN107131995A (en) *||2017-06-30||2017-09-05||吉林大学||A kind of Wiper pressing force distribution air tunnel testing device and wiper control method|
|CN110002366A (en) *||2019-03-25||2019-07-12||合肥方源机电有限公司||A kind of forklift engine cover of easy access|
|CN112459655A (en) *||2020-11-18||2021-03-09||奇瑞新能源汽车股份有限公司||Automatic opening device for front hatch cover of automobile|
|CN114084233A (en) *||2021-09-22||2022-02-25||浙江零跑科技股份有限公司||Self-adaptive control device for reducing noise, reducing resistance and enhancing safety and vehicle|
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- 2009-05-05 CN CN2009100506366A patent/CN101549712B/en not_active Expired - Fee Related
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|C10||Entry into substantive examination|
|SE01||Entry into force of request for substantive examination|
|C14||Grant of patent or utility model|
|CF01||Termination of patent right due to non-payment of annual fee||
Granted publication date: 20120125
Termination date: 20200505
|CF01||Termination of patent right due to non-payment of annual fee|