Sumitomo Construction will launch hybrid disk-lifting excavator
Following the successful development of the LEGEST series crawler hydraulic excavators, Sumitomo Construction Machinery Co., Ltd. will launch the world's first hybrid disk-lifting excavator in June this year. Disk lifter excavators are mainly used to handle broken steel operations. Due to the long working time of the machine, the mechanical body used for energy recovery has high rotation frequency and is suitable for the adoption of hybrid technology.
The power generation motors, converters, converters, rotary motors, and rotary speed reducers in the center of the hybrid power system all accumulate the technological crystallization of Sumitomo Heavy Industries Group and improve the fuel consumption by 20% compared to the current 20-ton disk-lifting excavator. . The current disk-lifting excavator was developed on the basis of the LEGEST series of standard excavators that were the first to receive the “Energy Conservation Award” in the construction machinery industry. It improved fuel consumption by 25% compared to the old model. Therefore, compared with the old model, the 20-ton "LEGEST Hybrid" hybrid disk hoisting excavator achieves a total of more than 40% fuel savings!
[summary of Sumitomo hybrid power system]

Sumitomo Hybrid Power System Overview
The main improvement points:
1 The energy of the engine is stored in the capacitor through a generator motor at low load.
2 The generator motor is used to support the motor under high load to achieve the purpose of averaging the load.
3 Sumitomo Heavy Industries Affiliate has newly developed a rotary motor and a new type of reducer for rotary drives.
4 Recycling of energy is made possible by reducing the energy loss during the cycle and storing the energy that occurs when the rotation is decelerated.
5 Combine the normally used hydraulically driven lifting disk power supply circuit into a hybrid system to achieve energy loss reduction and high efficiency.
[Fuel consumption]

Fuel consumption comparison
Instructions
1. The current 20-ton disk-lifting excavator, based on “LEGEST”, improved fuel consumption by 25% compared with the old model (SH200-3).
2. The LEGEST Hybrid of the hybrid system based on the LEGEST standard machine series further improved the fuel consumption by 20% compared to the current machine.
3. Therefore, the 20-ton "LEGEST Hybrid" compared with the old model achieved a total fuel saving of 40%.
Related news: Sumitomo Excavator

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