CN109781175A - A kind of device and method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling - Google Patents
A kind of device and method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling Download PDFInfo
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Abstract
The present invention provides a kind of device and methods for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, including data actuation；The data actuation is separately connected wheel torque sensor, wheel steering angle sensor, power assembly temperature sensor, electrodymamometer, vehicle CAN bus interface and vehicle-mounted oil consumption instrument.The decoupling method that the present invention uses is different from conventional capacity usage ratio decoupling method, it is decoupled with the capacity usage ratio of power assembly under vehicle operating condition as target, obtain the total power consumption of vehicle operating condition, output power and real time execution parameter, then using wheel torque and vehicle wheel rotational speed as the control parameter of power assembly reproduction vehicle operating condition, using power assembly temperature as boundary condition, reappear vehicle operating condition on power assembly rack, according to total power consumption, total capacity usage ratio is calculated in output power and input power, engine thermal efficiency or motor utilization rate of electrical, speed changer or retarder and transmission system transmission efficiency.
Description
Technical field
The invention belongs to new auto technologies to research and develop field, reappear vehicle operating condition energy for power assembly more particularly, to one kind
Measure the device and method of utilization rate decoupling.
Background technique
The capacity usage ratio of vehicle, especially drive system, including the energy of engine and/or motor and transmission system
Amount utilization rate is vehicle dynamic quality, very important goal decomposition parameter in fuel economy and driving performance development field,
Its index decomposition for not only contributing to vehicle performance target, while being also the capacity usage ratio for judging drive system and transmission system
The important parameter of vehicle gross energy utilization rate influence degree is accurately directed to where judging the problem of system integration matches
The low system of capacity usage ratio carries out type selecting, improvement and upgrading.Under prior art conditions, how accurately, quickly and low cost
Ground obtains the capacity usage ratio of drive system and transmission system, i.e. the capacity usage ratio decoupling of realization vehicle is to carry out above-mentioned work
When critical issue urgently to be solved.
02 phase in 2014 " auto technology " publishes an article " the engine power Utilization Ratio Analysis method based on NEDC operating condition ",
Propose the matching assessment of levels that capacity usage ratio is used for vehicle fuel-economy performance, this article do not mention drive system and
The decoupling of the gross energy utilization rate of transmission system only proposes the calculation method of gross energy utilization rate, and is used for and other vehicles
Type comparison；The acquisition methods or step for the capacity usage ratio that this article externally does work for vehicle simultaneously do not disclose Jie clearly
It continues.
In October, 2016 China's Automotive Engineering Society nd Annual Meeting " engine power stream based on vehicle NEDC state of cyclic operation
Distribution character ", this article describes the power flow distribution of engine in vehicle fuel economy evaluation operating condition NEDC state of cyclic operation, so
And this article uses effective indicated horsepower for drive system, that is, engine output power, the not reality output of engine
Power is also not involved with the capacity usage ratio and vehicle capacity usage ratio decoupling problem of transmission system.
Patent No. CN102243145B, authorized announcement date 2013.06.19, a kind of patent of invention " electric car electric drive trains
Automatic System Test Unit and its method ", the energy stream test device and method for power drive system are disclosed, which passes through control
Power drive system, electric drive characteristic of the simulating vehicle under different operating conditions and different vehicle model, and using motor output shaft
Torque sensor tests the output power of motor, but the patent built for the external control of motor and rack it is sufficiently complex, together
When the patent be also not involved with the capacity usage ratio of transmission system and the decoupling problem of vehicle capacity usage ratio.Furthermore using should
There are unpredictable differences for data under output power of motor and whole vehicle state that patent obtains.
Patent No. CN103674563B, authorized announcement date 2015.12.02, " one kind is used for vehicle energy flow point to patent of invention
The integration test method of analysis ", the test method of vehicle energy stream is disclosed, this method is directed to the output power or biography of drive system
The input power of dynamic system has used the torque sensor installed between crankshaft output end and clutch, the output to transmission system
Power installs torque sensor by the output end of speed changer and obtains transmission output power.The characteristics of patent is using real-time
Torque sensor obtains high-precision data.Real-time torque sensing is installed using engine crankshaft output end and transmission output
The problem of device, is that the sensor belongs to high-precision equipment, if to guarantee the precision of data, is typically only capable to specially design and adds
Work, the period is long, costly, secondly, the sensor is also limited by space between crankshaft and clutch and transmission output
Space limitation, it cannot be guaranteed that any vehicle can install real-time torque sensor；Third, the torque sensor generallys use patch
Mode, can only a vehicle set of system, the sensor can not be recycled on other vehicles after being completed；In addition, should
The transmission output torque that patent is mentioned is not related to transmission system, only contains the capacity usage ratio of speed changer.
Patent No. CN107505572A, data of publication of application 2017.12.22, a kind of patent of invention " power assembly of electric automobile
Energy stream test macro and method ", disclose the energy stream test macro and method for power assembly of electric automobile, the patent
It is directed to the energy stream of power battery pack, electric machine controller and driving motor, wherein output power of motor uses dynamo dynamometer machine
It obtains, the patent is without reference to vehicle gross energy utilization rate, also without reference to transmission system capacity usage ratio, and in order to obtain
Power assembly of electric automobile energy stream has built extremely complex heat-exchange system, while the patent is directed to electric powered motor
The difference that assembly energy stream is only applicable to the power assembly energy stream under power assembly, and whole vehicle state is unknown.
Patent No. CN107798472A, data of publication of application 2018.03.13, patent of invention " vehicle power flow distribution and oil consumption
The analysis method of impact factor evaluation ", each section calculation method of vehicle energy stream is disclosed, has used major part in this method
Well known calculation formula, and the output power for being directed to drive system has still used the side of engine flywheel end torque and revolving speed
Formula obtains.
Summary of the invention
In view of this, the present invention is directed to propose a kind of dress for power assembly reproduction vehicle operating condition capacity usage ratio decoupling
It sets and method, the decoupling method that the present invention uses is different from conventional capacity usage ratio decoupling method, this method is with vehicle operating condition
The capacity usage ratio decoupling of lower power assembly is target, obtains the total power consumption of vehicle operating condition, output power and real time execution
Parameter, then using wheel torque and vehicle wheel rotational speed as the control parameter of power assembly reproduction vehicle operating condition, with power assembly temperature
Degree is used as boundary condition, speed changer/retarder and transmission system is reappeared vehicle operating condition on power assembly rack, test obtains
Input power of the power assembly under vehicle operating condition is calculated total according to total power consumption, output power and input power
Capacity usage ratio, engine thermal efficiency or motor utilization rate of electrical, speed changer or retarder and transmission system transmission efficiency.
In order to achieve the above objectives, the technical scheme of the present invention is realized as follows:
A kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, including data actuation；Number, which is adopted, is
It is total that system is separately connected wheel torque sensor, wheel steering angle sensor, power assembly temperature sensor, electrodymamometer, vehicle CAN
Line interface and vehicle-mounted oil consumption instrument；Wheel torque sensor and wheel steering angle sensor are mounted on driving wheel hub by tooling,
Power assembly temperature sensor is mounted on lube oil sump, and vehicle-mounted oil consumption instrument is mounted on oil tank of vehicle fuel filter and oil spout
Between device, electrodymamometer acquires the input voltage and electric current of driving motor, and vehicle CAN bus interface connects the power assembly of vehicle
CAN bus data.
A method of for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, using above-mentioned a kind of for power
Assembly reappears the device of vehicle operating condition capacity usage ratio decoupling:
Step 1: test vehicle is placed on power assembly rack or on chassis dynamometer with whole vehicle state；
Step 2: operation vehicle operating condition obtains fuel consumption G1Or power consumption G2, according to wheel torque sensor number
According to total driving power P that outside vehicle resistance is calculated with wheel steering angle sensing data0, and collected wheel torque
The control parameter reappeared with angular acceleration as vehicle operating condition；It is passed by the power assembly temperature being arranged on lube oil sump
Sensor obtains power assembly temperature, using power assembly temperature as the boundary condition of reproduction vehicle operating condition；
Step 3: the fuel consumption of power phase non-in vehicle operating condition or power consumption being deducted, power phase is obtained
Wastage in bulk or weight energy G0, by total driving power P0With the wastage in bulk or weight energy G of power phase0It compares, obtains total drive in vehicle operating condition
Energy utilization rate η0；
Step 4: vehicle operating condition being reappeared based on power assembly: according to the speed changer or retarder and transmission system cloth on vehicle
It sets state they are mounted on power assembly rack, engine is substituted by the active motor of power assembly rack and drives transmission
System operating is installed at position in the output position of speed changer or retarder, outputting and inputting for transmission shaft respectively as required
Torque sensor；
Step 5: the operating load and revolving speed of speed changer and transmission system are controlled according to the control parameter acquired in step 2,
According to the running temperature of the vehicle operating condition Boundary Condition Control speed changer or retarder and transmission system that are acquired in step 2；
Step 6: the output power of active motor is the input power T of speed changer or retarder and transmission system2, will become
The input power T of fast device or retarder and transmission system2With the wastage in bulk or weight energy G of power phase in step 30It compares, is calculated
The thermal efficiency or motor electric energy conversion efficiency η of engine1；
Step 7: by driving power P total in step 20With the input of speed changer or retarder in step 6 and transmission system
Power T2It compares, obtains the transmission efficiency η of speed changer or retarder and transmission system2；
Step 8: the capacity usage ratio decoupling based on power assembly reproduction vehicle operating condition is realized, in step 3 in vehicle operating condition
Total driving energy utilization rate η0Equal to the thermal efficiency or motor electric energy conversion efficiency η of engine in step 61With speed change in step 7
The η of the transmission efficiency of device or retarder and transmission system2Product, η0=η1η2。
Further, in step 2: according to CO2Discharge calculates indirectly or vehicle-mounted oil consumption instrument directly obtains fuel consumption
G1, power consumption G is obtained according to electrodymamometer2:
Fuel consumption G is calculated based on carbon balance method1:
Wherein, M is the exhaust mass flow respectively to discharge pollutants, subscript HC, CO, CO2Respectively represent hydrocarbon emission, CO row
It puts and CO2Discharge, D is the density of test fuel at 15 DEG C；
It is directly tested based on vehicle-mounted oil consumption instrument and obtains fuel consumption G1:
Wherein, g (i) is the transient fuel consumption of sampling instant；
It is directly tested based on electrodymamometer and obtains power consumption G2:
Wherein, U (i) and I (i) is the driving motor input voltage and electric current of sampling instant respectively；
Total driving power P of outside vehicle resistance0:
N (i) and n (i) is the wheel torque and revolving speed of sampling instant respectively.
Further, in step 3: non-power phase includes idling and decelerating mode in vehicle operating condition: accelerator open degree is
Zero, combustion pressure zero, wheel torque≤0；
Total driving energy utilization rate η in vehicle operating condition0；
P0It is total driving power and G0It is the wastage in bulk or weight energy of power phase.
Further, in steps of 5: control parameter power error is within 2%, and speed error is within ± 2km/h, temperature
Error is spent within ± 2 DEG C.
Further, in step 2: measurement accuracy≤0.5% of vehicle-mounted oil consumption instrument, the measurement essence of wheel torque sensor
Degree≤0.5Nm.
Further, in step 4: the measuring accuracy of torque sensor is 5/10000ths of maximum range.
Compared with the existing technology, a kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling of the present invention
And method, it has the advantage that
A kind of device and method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling of the present invention, the present invention adopt
Decoupling method is different from conventional capacity usage ratio decoupling method, and this method is with the energy benefit of power assembly under vehicle operating condition
It is target with rate decoupling, the total power consumption of vehicle operating condition, output power and real time execution parameter is obtained, then with wheel torque
Control parameter with vehicle wheel rotational speed as power assembly reproduction vehicle operating condition will be become using power assembly temperature as boundary condition
Fast device or retarder and transmission system reappear vehicle operating condition on power assembly rack, and test obtains power assembly in vehicle operating condition
Under input power, total capacity usage ratio, engine are calculated according to total power consumption, output power and input power
The thermal efficiency or motor utilization rate of electrical, speed changer or retarder and transmission system transmission efficiency；The capacity usage ratio of vehicle operating condition
Test and decoupling obtain under unified vehicle operating condition, do not lack any a part, the equipment and sensor used can repeat
Using and data redundancy it is high；The present invention is suitable for the passenger car vehicle of various power assemblies simultaneously, and the decoupling period is short, general complete
The whole decoupling period is 30 days or so, if according in the prior art by the way of real-time torque sensor, only torque sensing
The design processing of device at least needs 4 to 8 months；Simultaneously decouple it is at low cost, due to real-time torque sensor can only a Che Yiyong, and
And require the flywheel of the vehicle and crankshaft parameters that cannot change, otherwise it can not continue to use, thus cost is very high, using this hair
Bright disclosed device and method, the vehicle-mounted oil consumption instrument and sensor used may be reused, it is only necessary to periodic calibrating equipment
And sensor accuracy.
Detailed description of the invention
The attached drawing for constituting a part of the invention is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.
In the accompanying drawings:
Fig. 1 is a kind of method flow for reappearing the decoupling of vehicle operating condition capacity usage ratio for power assembly of the embodiment of the present invention
Schematic diagram；
Fig. 2 is a kind of apparatus structure for reappearing the decoupling of vehicle operating condition capacity usage ratio for power assembly of the embodiment of the present invention
Schematic diagram；
Fig. 3 is a kind of Method And Principle for reappearing the decoupling of vehicle operating condition capacity usage ratio for power assembly of the embodiment of the present invention
Schematic diagram.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " etc. are used for description purposes only, it is not understood to indicate or imply phase
To importance or implicitly indicate the quantity of indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To explicitly or implicitly include one or more of the features.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Fig. 2, a kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, including number are adopted and are
System；Data actuation be separately connected wheel torque sensor, wheel steering angle sensor, power assembly temperature sensor, electrodymamometer,
Vehicle CAN bus interface and vehicle-mounted oil consumption instrument；Wheel torque sensor and wheel steering angle sensor are mounted on driving by tooling
It takes turns on wheel hub, power assembly temperature sensor is mounted on lube oil sump, and vehicle-mounted oil consumption instrument is mounted on oil tank of vehicle fuel filter
Between clear device and fuel injector, electrodymamometer acquires the input voltage and electric current of driving motor, and vehicle CAN bus interface connects vehicle
Power assembly CAN bus data.
As shown in Figure 1-3, a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, use are above-mentioned
A kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling:
Step 1: test vehicle is placed on power assembly rack or on chassis dynamometer with whole vehicle state；
Step 2: operation vehicle operating condition obtains fuel consumption G1Or power consumption G2, according to wheel torque sensor number
According to total driving power P that outside vehicle resistance is calculated with wheel steering angle sensing data0, and collected wheel torque
The control parameter reappeared with angular acceleration as vehicle operating condition；It is passed by the power assembly temperature being arranged on lube oil sump
Sensor obtains power assembly temperature, using power assembly temperature as the boundary condition of reproduction vehicle operating condition；
Step 3: the fuel consumption of power phase non-in vehicle operating condition or power consumption being deducted, power phase is obtained
Wastage in bulk or weight energy G0, by total driving power P0With the wastage in bulk or weight energy G of power phase0It compares, obtains total drive in vehicle operating condition
Energy utilization rate η0；
Step 4: vehicle operating condition being reappeared based on power assembly: according to the speed changer or retarder and transmission system cloth on vehicle
It sets state they are mounted on power assembly rack, engine is substituted by the active motor of power assembly rack and drives transmission
System operating is installed at position in the output position of speed changer or retarder, outputting and inputting for transmission shaft respectively as required
Torque sensor；
Step 5: the operating load and revolving speed of speed changer and transmission system are controlled according to the control parameter acquired in step 2,
According to the running temperature of the vehicle operating condition Boundary Condition Control speed changer or retarder and transmission system that are acquired in step 2；
Step 6: the output power of active motor is the input power T of speed changer or retarder and transmission system2, will become
The input power T of fast device or retarder and transmission system2With the wastage in bulk or weight energy G of power phase in step 30It compares, is calculated
The thermal efficiency or motor electric energy conversion efficiency η of engine1；
Step 7: by driving power P total in step 20With the input of speed changer or retarder in step 6 and transmission system
Power T2It compares, obtains the transmission efficiency η of speed changer or retarder and transmission system2；
Step 8: the capacity usage ratio decoupling based on power assembly reproduction vehicle operating condition is realized, in step 3 in vehicle operating condition
Total driving energy utilization rate η0Equal to the thermal efficiency or motor electric energy conversion efficiency η of engine in step 61With speed change in step 7
The η of the transmission efficiency of device or retarder and transmission system2Product, η0=η1η2。
As shown in Figure 1-3, in step 2: according to CO2Discharge calculates indirectly or vehicle-mounted oil consumption instrument directly obtains fuel consumption
Measure G1, power consumption G is obtained according to electrodymamometer2:
Fuel consumption G is calculated based on carbon balance method1:
Wherein, M is the exhaust mass flow respectively to discharge pollutants, subscript HC, CO, CO2Respectively represent hydrocarbon emission, CO row
It puts and CO2Discharge, D is the density of test fuel at 15 DEG C；
It is directly tested based on vehicle-mounted oil consumption instrument and obtains fuel consumption G1:
Wherein, g (i) is the transient fuel consumption of sampling instant；
It is directly tested based on electrodymamometer and obtains power consumption G2:
Wherein, U (i) and I (i) is the driving motor input voltage and electric current of sampling instant respectively；
Total driving power P of outside vehicle resistance0:
N (i) and n (i) is the wheel torque and revolving speed of sampling instant respectively.
As shown in Figure 1-3, in step 3: non-power phase includes idling and decelerating mode in vehicle operating condition: accelerator open degree
It is zero, combustion pressure zero, wheel torque≤0；
Total driving energy utilization rate η in vehicle operating condition0；
P0It is total driving power, G0It is the wastage in bulk or weight energy of power phase.
As shown in Figure 1-3, in steps of 5: control parameter power error within 2%, speed error ± 2km/h with
Interior, temperature error is within ± 2 DEG C.
As shown in Figure 1-3, in step 2: measurement accuracy≤0.5% of vehicle-mounted oil consumption instrument, the survey of wheel torque sensor
Accuracy of measurement≤0.5Nm.
As shown in Figure 1-3, in step 4: the measuring accuracy of torque sensor is 5/10000ths of maximum range.
The above is merely preferred embodiments of the present invention, be not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (7)
1. a kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, it is characterised in that: be including counting to adopt
System；The data actuation is separately connected wheel torque sensor, wheel steering angle sensor, power assembly temperature sensor, electric work
Rate meter, vehicle CAN bus interface and vehicle-mounted oil consumption instrument；The wheel torque sensor and wheel steering angle sensor are pacified by tooling
On driving wheel hub, the power assembly temperature sensor is mounted on lube oil sump, the vehicle-mounted oil consumption instrument installation
Between oil tank of vehicle fuel filter and fuel injector, the input voltage and electric current of the electrodymamometer acquisition driving motor, institute
State the power assembly CAN bus data of vehicle CAN bus interface connection vehicle.
2. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling, it is characterised in that: wanted using right
A kind of device for power assembly reproduction vehicle operating condition capacity usage ratio decoupling described in asking 1:
Step 1: test vehicle is placed on power assembly rack or on chassis dynamometer with whole vehicle state；
Step 2: operation vehicle operating condition obtains fuel consumption G1Or power consumption G2, according to wheel torque sensing data and
Total driving power P of outside vehicle resistance is calculated in wheel steering angle sensing data0, and collected wheel torque and angle
The control parameter that acceleration reappears as vehicle operating condition；Pass through the power assembly temperature sensor being arranged on lube oil sump
Power assembly temperature is obtained, using power assembly temperature as the boundary condition of reproduction vehicle operating condition；
Step 3: the fuel consumption of power phase non-in vehicle operating condition or power consumption being deducted, the total of power phase is obtained
Consume energy G0, by total driving power P0With the wastage in bulk or weight energy G of power phase0It compares, obtains total driving energy in vehicle operating condition
Measure utilization rate η0；
Step 4: vehicle operating condition being reappeared based on power assembly: according to the speed changer or retarder and driveline arrangement shape on vehicle
They are mounted on power assembly rack by state, substitute engine by the active motor of power assembly rack and drive transmission system
Operating installs torque in the output position of speed changer or retarder, outputting and inputting for transmission shaft respectively as required at position
Sensor；
Step 5: the operating load and revolving speed of speed changer and transmission system are controlled according to the control parameter acquired in step 2, according to
The running temperature of the vehicle operating condition Boundary Condition Control speed changer or retarder and transmission system that are acquired in step 2；
Step 6: the output power of active motor is the input power T of speed changer or retarder and transmission system2, by speed changer
Or the input power T of retarder and transmission system2With the wastage in bulk or weight energy G of power phase in step 30It compares, is calculated and starts
The thermal efficiency or motor electric energy conversion efficiency η of machine1；
Step 7: by driving power P total in step 20With the input power T of speed changer or retarder in step 6 and transmission system2
It compares, obtains the transmission efficiency η of speed changer or retarder and transmission system2；
Step 8: realize the capacity usage ratio decoupling based on power assembly reproduction vehicle operating condition, it is total in vehicle operating condition in step 3
Driving energy utilization rate η0Equal to the thermal efficiency or motor electric energy conversion efficiency η of engine in step 61With speed changer in step 7 or
The η of the transmission efficiency of retarder and transmission system2Product, η0=η1η2。
3. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling according to claim 2,
It is characterized in that: in step 2: according to CO2Discharge calculates indirectly or vehicle-mounted oil consumption instrument directly obtains fuel consumption G1, according to electricity
Power meter obtains power consumption G2:
Fuel consumption G is calculated based on carbon balance method1:
Wherein, M is the exhaust mass flow respectively to discharge pollutants, subscript HC, CO, CO2Respectively represent hydrocarbon emission, CO discharge and
CO2Discharge, D is the density of test fuel at 15 DEG C；
It is directly tested based on vehicle-mounted oil consumption instrument and obtains fuel consumption G1:
Wherein, g (i) is the transient fuel consumption of sampling instant；
It is directly tested based on electrodymamometer and obtains power consumption G2:
Wherein, U (i) and I (i) is the driving motor input voltage and electric current of sampling instant respectively；
Total driving power P of outside vehicle resistance0:
N (i) and n (i) is the wheel torque and revolving speed of sampling instant respectively.
4. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling according to claim 2,
Be characterized in that: in step 3: non-power phase includes idling and decelerating mode in vehicle operating condition: accelerator open degree zero, burning pressure
Power is zero, wheel torque≤0；
Total driving energy utilization rate η in vehicle operating condition0；
P0It is total driving power, G0It is the wastage in bulk or weight energy of power phase.
5. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling according to claim 2,
Be characterized in that: in steps of 5: control parameter power error is within 2%, and within ± 2km/h, temperature error exists speed error
Within ± 2 DEG C.
6. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling according to claim 2,
It is characterized in that: in step 2: measurement accuracy≤0.5% of vehicle-mounted oil consumption instrument, the measurement accuracy of wheel torque sensor≤
0.5Nm。
7. a kind of method for power assembly reproduction vehicle operating condition capacity usage ratio decoupling according to claim 2,
Be characterized in that: in step 4: the measuring accuracy of the torque sensor of installation is 5/10000ths of maximum range.
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| CN110967190A (en) * | 2019-11-26 | 2020-04-07 | 辽宁龙马安泰网络技术有限责任公司 | Method for detecting maximum torque and power of engine by automobile bench test |
| CN112124226A (en) * | 2020-09-29 | 2020-12-25 | 徐工集团工程机械有限公司 | Energy flow analysis method and system for engineering vehicle |
| CN113916442A (en) * | 2021-10-14 | 2022-01-11 | 安徽江淮汽车集团股份有限公司 | Torque calibration method and system for transmission shaft of vehicle |
| CN114136638A (en) * | 2022-01-04 | 2022-03-04 | 浙江三一装备有限公司 | Method and device for testing effective thermal efficiency of engine |
| CN115217872A (en) * | 2022-07-14 | 2022-10-21 | 东风商用车有限公司 | Clutch temperature measuring equipment on whole vehicle, assembling method and measuring method |
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