CN105067278A - Energy-saving competitive racing car sliding internal resistance measuring device and measuring method - Google Patents
Energy-saving competitive racing car sliding internal resistance measuring device and measuring method Download PDFInfo
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- CN105067278A CN105067278A CN201510183490.8A CN201510183490A CN105067278A CN 105067278 A CN105067278 A CN 105067278A CN 201510183490 A CN201510183490 A CN 201510183490A CN 105067278 A CN105067278 A CN 105067278A
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Abstract
The present invention discloses an energy-saving competitive racing car sliding internal resistance measuring device and measuring method. The sliding internal resistance measuring device is mainly composed of a motor driving system, a tensile force measuring module and a data collection and storage module. A to-be-measured energy-saving competitive racing car stimulates a sliding working condition under the action of the motor driving system, a portion, being fixedly connected onto the to-be-measured energy-saving competitive racing car, of the tensile force measuring module is stretched and then generates an effect of forces to a tension sensor, a force signal is thus generated and sent to the data collection and storage module, and a rotating speed measuring module measures rotating speed of the wheels and generates and sends a pulse signal to the data collection and storage module. The measured data is processed by the data collection and storage module and then is sent to a PC terminal for storage and to a display screen for real-time display. The sliding resistance converted by a chassis internal resistance during sliding of the energy-saving competitive racing car can be rapidly and accurately measured, and quantitative detection of the sliding internal resistance is realized.
Description
Technical field
The invention belongs to vehicle energy saving field, belong to brand-new energy-conservation athletic competition field or rather, relate to the energy-conservation sports racing car of a kind of mensuration and slide internal resistance determinator and assay method thereof.
Background technology
Along with development economic in recent years, energy conservation, environmental protection problem are more and more taken seriously.In this context, energy-conservation athletic competition is arisen at the historic moment.Its objective is that design one take engine as the energy-conservation sports racing car of power source, run through appointment distance with minimum oil consumption.The equivalent fuel consumption of this type of racing car is that hundreds of does not arrive several thousand kilometers often liter gasoline not etc.
The most significant feature of energy-conservation sports racing car is the traveling strategy that have employed " accelerate---slide ", kills engine slide when not needing driving force.The running resistance of automobile is divided into resistance to rolling, air resistance, grade resistance and acceleration resistance by tradition research.General-utility car seldom has the state of neutral position sliding, and when sliding by the phase mutual friction between automobile running system intraware, pull with produced by power train, braking system etc. to slide internal resistance less relative to other resistances, therefore deviser be indifferent to the size sliding internal resistance.And based on this kind of special energy-conservation sports racing car travelling strategy, the size sliding internal resistance but appreciable impact oil consumption number.
The positional parameter of wheel can have certain influence to sliding performance, and especially to energy-conservation sports racing car, this kind of impact is more remarkable.But, at present still not about data in this respect and test method.
The sliding performance of automobile will be recorded by coasting test.And coasting test can only detect roughly the power train of automobile and braking system with or without some retardation, and record the next Coasting resistance coefficient roughly of whole vehicle state, can not the impact of deaeration resistance and resistance to rolling, this is for being devoted to the design of the energy-conservation sports racing car improving sliding performance and inapplicable.
At present, the experimental study for vehicle transmission system resistance generally adopts the anti-method of dragging automobile driving wheel of chassis dynamometer.But, energy-conservation sports racing car volume and quality less, corresponding resistance is compared with general-utility car not in same magnitude, and general-utility car chassis dynamometer can not meet accuracy requirement.
Summary of the invention
The object of the invention is the deficiency in order to improve existing vehicle sliding internal resistance experimental study, solving common chassis dynamometer and cannot meet the problem measuring and require, and providing a kind of energy-conservation sports racing car to slide internal resistance determinator and assay method.
The present invention is based on longitudinal direction of car stress balance, carry out the travel conditions of simulating vehicle as the power source of dragging system using motor, and when utilizing data acquisition memory module to the speed of a motor vehicle and slide tire roll resistance with chassis internal resistance equivalence become external resistance measure and gather.The present invention not only can measure the drag size due to vehicle chassis internal resistance generation when sliding, and drag size can also be associated with sliding speed size.
The energy-conservation sports racing car of the present invention is slided internal resistance determinator and is made up of motor driving system, tension measurement module and data acquisition memory module;
Described motor driving system includes base, limiting plate, rolling stand, shaft coupling, back up pad, cylinder, travelling belt, electric machine support and motor, limiting plate is fixed by bolts on base, the top of limiting plate is scalable, be convenient to adjust width, the effect limiting tested energy-conservation sports racing car transversal displacement is played in mensuration process, limiting plate can move forward and backward in the strip hole of base, is convenient to find the point being suitable for limiting lateral direction of car displacement.Rolling stand is welded on electric machine support, and rolling stand is used for back-up roller, and motor is fixed by bolts on electric machine support, and motor is connected with cylinder by shaft coupling, and to drive cylinder to rotate, the rotation direction of cylinder is as the criterion with the tensioning of back up pad upper conveying belt.The vertical portion of back up pad is welded on electric machine support, the horizontal component of back up pad is arranged in below the theoretical contact point of tire and travelling belt, so that the weight of support vehicle vertical direction, the horizontal component steel plate of back up pad is reinforced with being bolted on electric machine support, guarantees that back up pad can bear the gravity of tested energy-conservation sports racing car.Need between back up pad and travelling belt to scribble wear-reduced coating, to reduce the sliding friction before both, prevent too much heat from producing.The rotating speed of motor is by special motor controller controls.
Described tension measurement module comprises the rigidity rope of pulley bracket, pulley, connection vehicle and pulling force sensor, pulley bracket is bolted on the front portion of base, the position of pulley bracket can adjust in the hole of base former minister strip, to find a suitable measuring position.The top of pulley bracket is provided with dead eye, and pulley bracket is connected with pulley by bearing, and one end of rigidity rope is connected on vehicle, and pulley walked around by rigidity rope, and the other end and the pulling force sensor of rigidity rope are connected, and pulling force sensor is fixed on pulley bracket.When vehicle has the trend of moving backward, rigidity rope just can produce certain pulling force to pulling force sensor.
Described data acquisition memory module C is grouped into by tachometric survey part, tension measurement part, data display unit and data transfer part, and its core component is STC89C52 single-chip microcomputer.Tachometric survey part is Hall revolution speed transducer, and Hall revolution speed transducer is connected on wheel, and vehicle wheel rotation makes Hall revolution speed transducer produce high low pulse signal, is sent to single-chip microcomputer; Tension measurement part is made up of pulling force sensor HX711AD D/A converter module, and the strain that pulling force sensor makes self produce by pulling force produces simulating signal, converts simulating signal to digital signal be sent to single-chip microcomputer by HX711AD D/A converter module; Data display unit is LCD1602 display screen, the speed of a motor vehicle that the display of LCD1602 display screen is current to be converted into through rotating speed and the current value of thrust recorded; Tcp data segment is PL2302 converter, and the TTL signal conversion that single-chip microcomputer produces by PL2302 converter, is sent to PC end by USB.
Assay method of the present invention comprises the following steps:
1, the vehicle body of tested energy-conservation sports racing car is removed, ensure that tire has enough tire pressures, to simulate real conditions when energy-conservation sports racing car is slided as far as possible;
2, make the brake system of energy-conservation sports racing car in running order, vertically move to limit it, be placed to assigned address afterwards, make wheel just directly over back up pad, if there is error position, the position on base of adjustment electric machine support is to adapt to the wheelbase of tested energy-conservation sports racing car;
3, adjust the length of limiting plate, make its vehicle frame just not encountering tested energy-conservation sports racing car for best, to limit the transversal displacement of racing car;
4, the vehicle frame of the rigidity rope in tension measurement module and tested energy-conservation sports racing car is connected, the reliability connected be ensured;
5, be separated by tested energy-conservation sports racing car power train coarst clutch, all making wheel and engine are connected and disconnect;
6, check whether the brake system of tested energy-conservation sports racing car drags;
7, make the driver of tested energy-conservation sports racing car sit on steering position, to simulate real conditions when energy-conservation sports racing car is slided as far as possible, and racing car can be handled in real time;
8, after tested energy-conservation sports racing car is fully loaded with, adjustment front-wheel camber to zero, adjusts suitable toe-in of front wheel;
9, data acquisition memory module is connected with PC, opens data acquisition memory module and registration is reset;
10, drive motor work, and whether note observing display screen registration normal;
11, regulate motor speed, make tested racing car obtain different speed, with observe sliding speed different time sliding performance change;
12, after collecting enough data, make motor stall, close data acquisition memory module C, after treating that wheel stops operating, first driver is shifted out steering position, make that the brake system of tested energy-conservation sports racing car is in running order to be vertically moved to limit it afterwards;
13, the connection of energy-conservation sports racing car and tension measurement module is removed, measuring position is shifted out in tested racing car.
14, analysis and disposal data.
The invention has the beneficial effects as follows:
The resistance of taxing changed into by chassis internal resistance when energy-conservation sports racing car is slided can be measured rapidly and accurately, realize the quantitative detection of sliding internal resistance, the present invention can be used for studying each parameter of energy-conservation sports racing car to the impact of sliding internal resistance further, thus the chassis that can ensure energy-conservation sports racing car in order.Outside energy-conservation sports field, also have directive significance to the research of common vehicle fuel economy, indirectly economic benefit is huge, very favourable to socio-economic development.
Innovation of the present invention has:
1, motor run vehicle tyre is utilized to rotate, simulating vehicle actual travel situation;
2, resistance of taxing and the speed of a motor vehicle are directly measured with sensor, and can one_to_one corresponding and be stored into PC end, facilitate record, data can as research raw data;
3, motor driving system bolt in front and back is movably connected on base, can range of adjustment to adapt to the vehicle of disalignment distance.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that internal resistance determinator is slided on energy-conservation sports racing car chassis.
Fig. 2 is the schematic diagram of motor driving system.
Fig. 3 is the schematic diagram of tension measurement module;
Fig. 4 is STC89C52 single chip circuit figure.
Fig. 5 is Hall revolution speed transducer circuit diagram.
Fig. 6 is pulling force sensor circuit diagram.
Fig. 7 is HX711AD D/A converter module circuit diagram.
Fig. 8 is LCD1602 display screen circuit diagram.
Fig. 9 is power supply-PL2302 converter circuit figure.
Figure 10 is the schematic diagram of tension measurement module.
Figure 11 is the logic connectivity diagram of package unit.
Figure 12 is Signal sampling and processing process flow diagram.
Figure 13 measures front-wheel camber to the schematic diagram sliding internal resistance impact.
A. motor driving system B. tension measurement module C data acquisition memory module 1. base 2. limiting plate 3. rolling stand 4. shaft coupling 5. back up pad 6. cylinder 7. travelling belt 8. electric machine support 9. motor 10. pulley bracket 11. pulley 12. rigidity rope 13. pulling force sensor 14. Hall revolution speed transducer 15. tire 16. Adjustable Angle Hinge 17. weight in figure
Embodiment
Refer to shown in Fig. 1, Fig. 2 and Fig. 3, the energy-conservation sports racing car of the present invention is slided internal resistance determinator and is made up of motor driving system A, tension measurement module B and data acquisition memory module C;
Refer to shown in Fig. 1 and Fig. 2, described motor driving system A includes base 1, limiting plate 2, rolling stand 3, shaft coupling 4, back up pad 5, cylinder 6, travelling belt 7, electric machine support 8 and motor 9, limiting plate 2 is fixed by bolts on base 1, the top of limiting plate 2 is scalable, be convenient to adjust width, the effect limiting tested energy-conservation sports racing car transversal displacement is played in mensuration process, limiting plate 2 can move forward and backward in the strip hole of base 1, is convenient to find the point being suitable for limiting lateral direction of car displacement.Rolling stand 3 is welded on electric machine support 8, rolling stand 3 is for back-up roller 6, and motor 9 is fixed by bolts on electric machine support 8, and motor 9 is connected with cylinder 6 by shaft coupling 4, to drive cylinder 6 to rotate, the rotation direction of cylinder 6 is as the criterion with the tensioning of back up pad 5 upper conveying belt 7.The vertical portion of back up pad 5 is welded on electric machine support 8, the horizontal component of back up pad 5 is arranged in below the theoretical contact point of tire 15 and travelling belt 7, so that the weight of support vehicle vertical direction, the horizontal component steel plate of back up pad 5 is reinforced with being bolted on electric machine support 8, guarantees that back up pad 5 can bear the gravity of tested energy-conservation sports racing car.Need to scribble wear-reduced coating between back up pad 5 and travelling belt 7, to reduce the sliding friction before both, prevent too much heat from producing.The rotating speed of motor 9 is by special motor controller controls.
Refer to shown in Fig. 3, described tension measurement module B comprises the rigidity rope 12 of pulley bracket 10, pulley 11, connection vehicle and pulling force sensor 13, pulley bracket 10 is bolted on the front portion of base 1, the position of pulley bracket 10 can adjust in the hole of base 1 former minister strip, to find a suitable measuring position.The top of pulley bracket 10 is provided with dead eye, pulley bracket 10 is connected with pulley 11 by bearing, and one end of rigidity rope 12 is connected on vehicle, and pulley 11 walked around by rigidity rope 12, the other end and the pulling force sensor 13 of rigidity rope 12 are connected, and pulling force sensor 13 is fixed on pulley bracket 10.When vehicle has the trend of moving backward, rigidity rope 12 just can produce certain pulling force to pulling force sensor 13.
Refer to shown in Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8 and Fig. 9, described data acquisition memory module C is grouped into by tachometric survey part, tension measurement part, data display unit and data transfer part, and its core component is STC89C52 single-chip microcomputer.Tachometric survey part is Hall revolution speed transducer 14, and Hall revolution speed transducer 14 is connected on wheel, and vehicle wheel rotation makes Hall revolution speed transducer 14 produce high low pulse signal, is sent to single-chip microcomputer; Tension measurement part is made up of pulling force sensor 13 and HX711AD D/A converter module, the strain that pulling force sensor 13 makes self produce by pulling force produces simulating signal, converts simulating signal to digital signal be sent to single-chip microcomputer by HX711AD D/A converter module; Data display unit is LCD1602 display screen, the speed of a motor vehicle that the display of LCD1602 display screen is current to be converted into through rotating speed and the current value of thrust recorded; Tcp data segment is PL2302 converter, and the TTL signal conversion that single-chip microcomputer produces by PL2302 converter, is sent to PC end by USB.
Refer to shown in Fig. 2, Fig. 3 and Figure 10, measuring principle of the present invention is: the stress balance of vehicle in fore-and-aft plane.When the motor 9 in motor driving system A drives cylinder 6 then to drive travelling belt 7 to work according to direction as shown, the wheel of tested energy-conservation sports racing car can rotate according to direction as shown.This measure is the straight-line travelling of simulating vehicle, and the speed of wheel rolling can realize by regulating motor speed.After wheel rolling, tested energy-conservation sports racing car inherently has the trend of moving backward, and rigidity rope 12 fixed thereon just produces pulling force, by pulley 11 pairs of pulling force sensor 13 generation effects, produces the simulating signal of power.The drag size that this power and vehicle produce due to tire and chassis internal resistance when sliding is equal.Hall revolution speed transducer 14 is fixed on axletree and measures vehicle wheel rotational speed, produces tach signal.
Refer to shown in Figure 11, the logic order of connection of the present invention is: tested energy-conservation sports racing car is at the effect Imitating coasting mode of motor driving system A, after the tension measurement module B part be connected in tested energy-conservation sports racing car is stretched, pulling force sensor is produced to the effect of power, make it produce force signal and deliver to data acquisition memory module C, the rotating speed generation pulse signal that rotation speed measuring module measures wheel delivers to data acquisition module.The data recorded are sent to PC end and store and be sent to display screen and show in real time after data acquisition memory module C process.
Refer to shown in Figure 12, Signal sampling and processing flow process of the present invention is; Pulling force sensor sends the simulating signal of power after under tension effect produces distortion, after HX711AD D/A converter module, become digital signal send to the process of STC89C52 single-chip microcomputer, Hall revolution speed transducer 14 inspection vehicle wheel speed produces pulse signal and sends to the process of STC89C52 single-chip microcomputer.The pulling force signal collected and tach signal are sent to LCD1602 LCDs and show in real time by STC89C52 single-chip microcomputer after treatment, and are sent to PC end by USB after PL2303 conversion, data are stored.
Assay method of the present invention comprises the following steps:
1, the vehicle body of tested energy-conservation sports racing car is removed, ensure that tire has enough tire pressures, to simulate real conditions when energy-conservation sports racing car is slided as far as possible;
2, make the brake system of energy-conservation sports racing car in running order, vertically move to limit it, be placed to assigned address afterwards, make wheel just directly over back up pad, if there is error position, the position on base of adjustment electric machine support is to adapt to the wheelbase of tested energy-conservation sports racing car;
3, adjust the length of limiting plate, make its vehicle frame just not encountering tested energy-conservation sports racing car for best, to limit the transversal displacement of racing car;
4, the rigidity rope 12 in tension measurement module B is connected with the vehicle frame of tested energy-conservation sports racing car, the reliability connected be ensured;
5, be separated by tested energy-conservation sports racing car power train coarst clutch, all making wheel and engine are connected and disconnect;
6, check whether the brake system of tested energy-conservation sports racing car drags;
7, make the driver of tested energy-conservation sports racing car sit on steering position, to simulate real conditions when energy-conservation sports racing car is slided as far as possible, and racing car can be handled in real time;
8, after tested energy-conservation sports racing car is fully loaded with, adjustment front-wheel camber to zero, adjusts suitable toe-in of front wheel;
9, data acquisition memory module C and PC is connected, open data acquisition memory module C and registration is reset;
10, drive motor 9 works, and whether note observing display screen registration normal;
11, regulate motor 9 rotating speed, make tested racing car obtain different speed, with observe sliding speed different time sliding performance change;
12, after collecting enough data, motor 9 is quit work, closes data acquisition memory module C, after treating that wheel stops operating, first driver is shifted out steering position, make that the brake system of tested energy-conservation sports racing car is in running order to be vertically moved to limit it afterwards;
13, the connection of energy-conservation sports racing car and tension measurement module is removed, measuring position is shifted out in tested racing car.
14, analysis and disposal data.
The present invention can also study each parameter of energy-conservation sports racing car to the impact of sliding performance, below to study front-wheel camber to slide internal resistance impact on chassis, introduces research method,
1, as shown in figure 13, the wheel of two energy-conservation sports racing cars is made structure as shown in figure 13, and Adjustable Angle Hinge 16 can produce various front wheel camber angle, and weight 17 is used for simulating load when energy-conservation sports racing car is truly slided suffered by front-wheel;
2, energy-conservation sports racing car front-wheel weight size is recorded with platform scale;
3, according to the quality of the front-wheel weight size determination weight 17 recorded, be added on Figure 13 shown device;
4, the rigidity rope 12 in tension measurement module is connected with the vehicle frame of tested energy-conservation sports racing car, the reliability connected be ensured;
5, ensure that two tires have enough tire pressures, to simulate real conditions when energy-conservation sports racing car is slided as far as possible;
6, data acquisition memory module C and PC is connected, open data acquisition memory module C and registration is reset;
7, front-wheel camber is now measured, and record;
8, drive motor work, and whether note observing display screen registration normal;
9, regulate motor 9 rotating speed, make tested wheel obtain different speed, with observe sliding speed different time sliding performance change;
10, make motor 9 break-off, the angle of adjustment Adjustable Angle Hinge 16, obtains new front-wheel camber;
11 repeat step 6 to step 11;
12, after collecting enough data, close data acquisition memory module C, after treating that wheel stops operating, remove weight 17;
13, the connection of energy-conservation sports racing car and tension measurement module is removed, measuring position is shifted out in tested racing car;
14, analysis and disposal data.
Claims (2)
1. an internal resistance determinator is slided in energy-conservation sports racing car, it is characterized in that: be made up of motor driving system (A), tension measurement module (B) and data acquisition memory module (C);
Described motor driving system (A) includes base (1), limiting plate (2), rolling stand (3), shaft coupling (4), back up pad (5), cylinder (6), travelling belt (7), electric machine support (8) and motor (9), limiting plate (2) is fixed by bolts on base (1), rolling stand (3) is welded on electric machine support (8), rolling stand (3) is for back-up roller (6), motor (9) is fixed by bolts on electric machine support (8), motor (9) is connected with cylinder (6) by shaft coupling (4), rotate to drive cylinder (6), the vertical portion of back up pad (5) is welded on electric machine support (8), the horizontal component of back up pad (5) is arranged in tire 1(5) with the theoretical contact point of travelling belt (7) below, so that the weight of support vehicle vertical direction, the horizontal component steel plate of back up pad (5) is reinforced with being bolted on electric machine support (8), need to scribble wear-reduced coating between back up pad (5) and travelling belt (7),
Described tension measurement module (B) comprises pulley bracket (10), pulley (11), connect the rigidity rope (12) of vehicle and pulling force sensor (13), pulley bracket (10) is bolted on the front portion of base (1), the top of pulley bracket (10) is provided with dead eye, pulley bracket (10) is connected with pulley (11) by bearing, one end of rigidity rope (12) is connected on vehicle, pulley (11) walked around by rigidity rope (12), the other end and the pulling force sensor (13) of rigidity rope (12) are connected, pulling force sensor (13) is fixed on pulley bracket (10),
Described data acquisition memory module (C) is grouped into by tachometric survey part, tension measurement part, data display unit and data transfer part, and its core component is STC89C52 single-chip microcomputer; Tachometric survey part is Hall revolution speed transducer (14), and Hall revolution speed transducer (14) is connected on wheel, and vehicle wheel rotation makes Hall revolution speed transducer (14) produce high low pulse signal, is sent to single-chip microcomputer; Tension measurement part is made up of pulling force sensor (13) and HX711AD D/A converter module, the strain that pulling force sensor (13) makes self produce by pulling force produces simulating signal, converts simulating signal to digital signal be sent to single-chip microcomputer by HX711AD D/A converter module; Data display unit is LCD1602 display screen, the speed of a motor vehicle that the display of LCD1602 display screen is current to be converted into through rotating speed and the current value of thrust recorded; Tcp data segment is PL2302 converter, and the TTL signal conversion that single-chip microcomputer produces by PL2302 converter, is sent to PC end by USB.
2. an internal resistance assay method is slided in energy-conservation sports racing car, and the method comprises the following steps:
1), by the vehicle body of tested energy-conservation sports racing car remove, ensure that tire has enough tire pressures, to simulate real conditions when energy-conservation sports racing car is slided as far as possible;
2), make the brake system of energy-conservation sports racing car in running order, vertically move to limit it, be placed to assigned address afterwards, make wheel just directly over back up pad, if there is error position, the position on base of adjustment electric machine support is to adapt to the wheelbase of tested energy-conservation sports racing car;
3), the length of adjustment limiting plate, make its vehicle frame just not encountering tested energy-conservation sports racing car for best, to limit the transversal displacement of racing car;
4), by the vehicle frame of the rigidity rope (12) in tension measurement module (B) with tested energy-conservation sports racing car be connected, the reliability connected be ensured;
5), by tested energy-conservation sports racing car power train coarst clutch be separated, all making wheel and engine are connected and disconnect;
6), check whether the brake system of tested energy-conservation sports racing car drags;
7), make the driver of tested energy-conservation sports racing car sit on steering position, to simulate real conditions when energy-conservation sports racing car is slided as far as possible, and racing car can be handled in real time;
8), tested energy-conservation sports racing car fully loaded after, adjustment front-wheel camber to zero, adjusts suitable toe-in of front wheel;
9), by data acquisition memory module (C) be connected with PC, open data acquisition memory module (C) and registration is reset;
10), drive motor (9) works, and notices that whether observation display screen registration is normal;
11), regulate motor (9) rotating speed, make tested racing car obtain different speed, with observe sliding speed different time sliding performance change;
12), after collecting enough data, motor (9) is quit work, closes data acquisition memory module (C), after treating that wheel stops operating, first driver is shifted out steering position, make that the brake system of tested energy-conservation sports racing car is in running order to be vertically moved to limit it afterwards;
13), by the connection of energy-conservation sports racing car and tension measurement module remove, measuring position is shifted out in tested racing car;
14), analysis and disposal data.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478432A (en) * | 2017-09-13 | 2017-12-15 | 汕头市猛狮新能源车辆技术有限公司 | Vehicle testing equipment |
| CN108956165A (en) * | 2018-08-21 | 2018-12-07 | 杭叉集团股份有限公司 | A kind of tire rolling resistance coefficient determination experimental rig |
| CN108982122A (en) * | 2018-08-01 | 2018-12-11 | 北京新能源汽车股份有限公司 | Method and device for evaluating influence of dragging torque on energy consumption of automobile |
| CN111220537A (en) * | 2020-02-24 | 2020-06-02 | 石家庄铁道大学 | Stretching pore path trend measuring system |
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2015
- 2015-04-19 CN CN201510183490.8A patent/CN105067278A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478432A (en) * | 2017-09-13 | 2017-12-15 | 汕头市猛狮新能源车辆技术有限公司 | Vehicle testing equipment |
| CN108982122A (en) * | 2018-08-01 | 2018-12-11 | 北京新能源汽车股份有限公司 | Method and device for evaluating influence of dragging torque on energy consumption of automobile |
| CN108956165A (en) * | 2018-08-21 | 2018-12-07 | 杭叉集团股份有限公司 | A kind of tire rolling resistance coefficient determination experimental rig |
| CN111220537A (en) * | 2020-02-24 | 2020-06-02 | 石家庄铁道大学 | Stretching pore path trend measuring system |
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Application publication date: 20151118 |
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| WD01 | Invention patent application deemed withdrawn after publication |