CN103713222A - Working condition transformation method for vehicle electric quantity balance test - Google Patents
Working condition transformation method for vehicle electric quantity balance test Download PDFInfo
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- CN103713222A CN103713222A CN201410001908.4A CN201410001908A CN103713222A CN 103713222 A CN103713222 A CN 103713222A CN 201410001908 A CN201410001908 A CN 201410001908A CN 103713222 A CN103713222 A CN 103713222A
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Abstract
The invention discloses a working condition transformation method for a vehicle electric quantity balance test. The method comprises the steps that (1) the initial working condition of the electric balance test is determined, and the relation between time and vehicle speed is extracted; (2) engine speed corresponding to the vehicle speed is obtained on the basis of the step (1); (3) according to the speed ratio of the engine to a generator, generator speeds corresponding to different engine speeds are obtained; (4) according to a generator characteristic curve, the relation between the generator speeds and generated currents is obtained; (5) the quantity of generated electricity is obtained; (6) according to the generator characteristic curve, the new working condition of the engine speed or the vehicle speed easy to operate is obtained to conduct the test. Through the working condition transformation method, complex electric balance test working conditions can be transformed into simple operable test working conditions, therefore, the efficiency of the electric balance test is improved, and development cost is lowered. Meanwhile, the working condition transformation method is not limited by test methods or electric loads, and is wide in application range.
Description
Technical field
The present invention relates to a kind of operating mode method for transformation, particularly the operating mode method for transformation of a kind of vehicle electric weight balance test.
Background technology
Between car load generator, accumulator and other consumers, exist the supply and demand matching relationship of energy release and loss.Along with the development of automotive electronic technology, electric power consumption increase is inexorable trend, and the matching problem of electric power system can be more outstanding.For making automobile under any weather and service condition, can reliably working, in car load design and development process, must carry out to vehicle electrical systems the examination of electric quantity balancing.
In car load performance history, the design of electric power system and checking, be all by experimental formula and weighting experience factor analog computation car load electricity consumption situation, can not full confirmation design parameter, must verify by car load electrobalance.
The test method of electrobalance is taked at present operating condition of test complicated operation, efficiency are low, and especially in actual road test, the security for driver exists threat.
Summary of the invention
The object of the invention is, for the deficiency of existing operating condition of test, propose the operating mode method for transformation of a kind of vehicle electric weight balance test.It can guarantee in the situation that the relation that the electric weight of whole electric power system produces and consumes is constant, complicated operating condition of test is changed into the operating condition of test of simple easy operating, thereby improves test efficiency, reduces cost of development, improves security simultaneously.
Realize the object of the invention technical scheme as follows:
An operating mode method for transformation for vehicle electric weight balance test, comprises the steps:
An operating mode method for transformation for vehicle electric weight balance test, comprises the steps:
(1) determine the initial operating mode of electrobalance test, extraction time
and the speed of a motor vehicle
between relation;
(2) on the basis of step (1), obtain the speed of a motor vehicle
corresponding engine speed
, the tachometer gage of engine is shown:
In formula,
for engine speed;
for automobile driving speed;
for radius of wheel;
for transmission ratio;
for final driver ratio;
(3) according to the rotating ratio of engine and generator
, obtain under different engine generator speed
;
(4), according to generator property curve, obtain under corresponding test temperature condition generator speed and generation current
between relation;
(5) in step (1) to the basis of (4), obtain generated energy;
(6) according to generator property curve, obtain the engine speed of easy operating or the new operating mode of the speed of a motor vehicle, vehicle is tested under new operating mode.
Further, operating mode transform before and after the total generated energy of generator constant, constant with the total power consumption of electric loading.
Further, described electric quantity balancing test comprises vehicle road test, bench simulation test or environment storehouse simulation test.
Further, described operating mode method for transformation is not subject to the restriction of electrical load.
Further, the generator property curve described in step (4) is the relation curve between generator speed and generation current under condition of different temperatures.
The beneficial effect that the present invention has is:
The method that this operating mode transforms, not changing under the prerequisite of vehicle electrical systems relation between supply and demand, changes into complicated operating condition of test the operating condition of test of simple easy operating, thereby improves test efficiency, reduces cost of development, improves security simultaneously.Be not put to the test method and with the restriction of electric loading of this operating mode method for transformation, is widely used simultaneously.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the operating mode method for transformation of a kind of vehicle electric weight of the present invention balance test.
Embodiment
Now the present invention is described in more detail by reference to the accompanying drawings.
The process flow diagram of the operating mode method for transformation of a kind of vehicle electric weight of the present invention balance test as shown in Figure 1, specifically comprises the steps:
Step 1: determine the initial operating mode of electrobalance test, extraction time
and the speed of a motor vehicle
between relation.
Step 2: according to the relation of the engine speed of a motor vehicle and rotating speed, calculate and the speed of a motor vehicle
corresponding engine speed
.
Wherein, the rotating speed of engine can be expressed as:
In formula,
for engine speed, unit: r/min;
for automobile driving speed, unit:
;
for radius of wheel, unit:
;
for transmission ratio;
for final driver ratio.
Step 3: according to the rotating ratio of engine and generator
, obtain under different engine generator speed
.
Step 4: according to generator property curve, find under corresponding test temperature condition generator speed and generation current
between relation.Generator property curve is the relation between generator speed and generation current under condition of different temperatures.
Step 5: calculate the generated energy in whole process:
In formula,
for the gross generation of generator, unit:
;
for test period, unit: s.
Step 6: according to generator property curve, find engine speed or the speed of a motor vehicle operating mode of convenient operation and test.Easy-operating operating mode can be engine speed and the speed of a motor vehicle.
The operating mode method for transformation of a kind of vehicle electric weight of the present invention balance test can be applied to, in all electrobalance test methods, comprise vehicle road test, bench simulation test, or environment storehouse simulation test, but be not limited only to this two kinds of test methods.This operating mode method for transformation is not subject to the restriction of electrical load, uses any electrical load can apply the method.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (5)
1. an operating mode method for transformation for vehicle electric weight balance test, comprises the steps:
(1) determine the initial operating mode of electrobalance test, extraction time
and the speed of a motor vehicle
between relation;
(2) on the basis of step (1), obtain the speed of a motor vehicle
corresponding engine speed
, the tachometer gage of engine is shown:
In formula,
for engine speed;
for automobile driving speed;
for radius of wheel;
for transmission ratio;
for final driver ratio;
(3) according to the rotating ratio of engine and generator
, obtain under different engine generator speed
;
(4), according to generator property curve, obtain under corresponding test temperature condition generator speed and generation current
between relation;
(5) in step (1) to the basis of (4), obtain generated energy;
(6) according to generator property curve, obtain the engine speed of easy operating or the new operating mode of the speed of a motor vehicle, vehicle is tested under new operating mode.
2. the operating mode method for transformation of vehicle electric weight as claimed in claim 1 balance test, is characterized in that, it is constant, constant with the total power consumption of electric loading that operating mode transforms the total generated energy of front and back generator.
3. the operating mode method for transformation of vehicle electric weight as claimed in claim 1 or 2 balance test, is characterized in that, described electric quantity balancing test comprises vehicle road test, bench simulation test or environment storehouse simulation test.
4. the operating mode method for transformation of vehicle electric weight as claimed in claim 1 or 2 balance test, is characterized in that, described operating mode method for transformation is not subject to the restriction of electrical load.
5. the operating mode method for transformation of vehicle electric weight as claimed in claim 1 balance test, is characterized in that, the generator property curve described in step (4) is the relation curve between generator speed and generation current under condition of different temperatures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410001908.4A CN103713222A (en) | 2014-01-03 | 2014-01-03 | Working condition transformation method for vehicle electric quantity balance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410001908.4A CN103713222A (en) | 2014-01-03 | 2014-01-03 | Working condition transformation method for vehicle electric quantity balance test |
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|---|---|
| CN103713222A true CN103713222A (en) | 2014-04-09 |
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Cited By (2)
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| CN104198865A (en) * | 2014-09-19 | 2014-12-10 | 南京汽车集团有限公司 | Vehicle power balance test method |
| CN105717391A (en) * | 2016-01-28 | 2016-06-29 | 奇瑞汽车股份有限公司 | Test system and method for automobile electric balance |
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2014
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| CN101516706A (en) * | 2006-09-12 | 2009-08-26 | 丰田自动车株式会社 | Driving force control device for vehicle |
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Application publication date: 20140409 |