| Parameter | Specification |
|---|---|
| Motor Type | Permanent Magnet Synchronous Motor / 8-layer Flat Winding |
| Operating Voltage | 250V ～ 470V |
| Peak Electrical Power | 90 kW |
| Rated Electrical Power | 70 kW |
| Peak Torque | 210 Nm |
| Rated Torque | 160 Nm |
| Maximum Speed | 5,700 rpm |
| Protection Rating | IP67 & IP6k9k |
| EMC Level | Class 3 |
| Cooling Method | Oil-cooled |
| Overall Dimensions | 411 mm × 302 mm × 487 mm |
Engineered for next-generation extended-range electric vehicles (EREVs), the ER70 Range-Extended Generator System by Dowway Vehicle sets a new benchmark in power density, reliability, and integration flexibility. As a leading Chinese manufacturer specializing in custom EV drivetrain R&D and production, Dowway Vehicle leverages advanced motor technology to deliver a high-performance solution tailored to global automotive platforms.
At the core of the ER70 is an 8-layer flat-wound permanent magnet synchronous motor (PMSM)—a design that maximizes copper fill factor, reduces AC losses, and enables exceptional efficiency across a wide operating range. Capable of delivering 90 kW peak electrical power and 70 kW rated power within a compact envelope (411 × 302 × 487 mm), the system operates seamlessly across a broad voltage window (250V–470V), making it compatible with both legacy 400V and emerging high-voltage architectures.
Designed for demanding automotive environments, the ER70 features oil-cooled thermal management for stable performance under continuous high-load conditions, coupled with industry-leading protection ratings: IP67 for dust/water immersion resistance and IP6K9K for resilience against high-pressure, high-temperature steam cleaning—critical for underhood durability. The generator delivers 210 Nm peak torque and 160 Nm rated torque at speeds up to 5,700 rpm, ensuring responsive power delivery without compromising NVH (noise, vibration, harshness).
Compliance with EMC Class 3 standards guarantees minimal electromagnetic interference, enabling safe coexistence with sensitive vehicle electronics. Every unit is developed under IATF 16949 quality protocols and supports full customization—from software calibration and CAN communication tuning to mechanical interface adaptation.
As your strategic partner, Dowway Vehicle offers end-to-end services: concept validation, rapid prototyping, DV/PV testing, and scalable manufacturing. Whether you’re developing a premium EREV sedan, SUV, or light commercial vehicle, our engineering team provides agile, cost-effective support from design to delivery. Choose Dowway Vehicle—not just a supplier, but a co-innovation partner in electrified mobility.
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