Patented Z-Shaft interlinked Dynamometer designed or all types of EVs with different drive modes:Front-wheel-drive,Rear-wheel-drive,and Four-wheel-drive;
Real-time synchronisation of four-wheel drive is achieved through automatic wheelbase adjustment(2300-3300mm). Simply input the value of wheelbase can automatically adjust the front and rear rollers bench via the Z-shaft transmission;
Dyno Bench Technical Data
| Item | 4WD EV Dyno(Z-Shaft Linked) | Heavy-duty chassis Dyno |
| Maximum carrying vehicle mass | 5000kg | - |
| Maximum bearing axle mass | 3000kg | 13000kg |
| Maximum absorption driving force | 0〜6000N×2 | 0-10000 N |
| Max. test speed | 130 km/h | 130 km/h |
| Roller diamete | Ф216mm | Ф373mm |
| Roller length | 1000mm | 1050mm |
| Inside wheel thread | 700mm | 900mm |
| Outer wheel thread | 2700mm | 2900mm |
| Minimum vehicle wheelbase | 2300mm | - |
| Maximum vehicle wheelbase | 3300mm | - |
| Eddy current rated power | 160 kw x 2 | 700 kW(max absorbtion power) |
| Back drag motor power | 7.5kW | 11 kw(transducer control) |
Software UI
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| Dis-charging/Charging Test Software | Dis-charging Test Interface |
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| Charging Test Interface | EV Test Operation Info. System |
Why 4WD Synchronized
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Most of the 2WD EVs have high-accuracy wheel traction control. However, if the four wheels are not moving at the same speed, power take-off of the EV could be limited or suppressed. |
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For All-Wheel Drive(AWD) EV, the front wheels and rear wheels are usually powered by two different motors with different power grades. As a result, the front wheels and the rear wheels will not have the same speed during a regular DYNO test. |
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To address this issue, we must use the interlinked 4WD Dynamometer for a perfect simulation of the synchronous operation of wheels during testing. |
EV Dis-charging Test Functions
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Discharging Simulation |
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BMS Monitoring and Driving Capacity test |
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EV Output Power and |
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4WD Cycle Running at 0-130km/h on |
Real-time monitoring of EV's driving state during |
EV output power test is conducted under a synchronous 4WD running condition. Comparison of drag power test for ERBS of EV during its cruising cycle (optional). |
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EV TEST CUSTOMER CASES
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