Product Description

The Cummins 4BTA3.9-G13 Generator Drive Engine is a compact, fuel-efficient diesel engine for generator sets, delivering dependable power generation for small and medium-sized applications. With 3.9 liters displacement, a 4-cylinder inline design, and turbocharged with jacket-water aftercooling, it produces 87–97 kW at 1500 rpm.

Built by Dongfeng Cummins Engine Co., Ltd., this genuine Cummins generator engine provides low fuel consumption, durable performance, and simple maintenance, making it an ideal solution for commercial, industrial, and standby generator sets.

Specifications

• Engine Model: Cummins 4BTA3.9-G13
• Configuration: 4-cycle, 4-cylinder inline
• Aspiration: Jacket water Aftercooled
• Displacement: 3.9 liters
• Bore × Stroke: 102 × 120 mm
• Compression Ratio: 18.0:1
• Rated Speed: 1500 rpm
• Power Output: Prime: 87 kW (117 HP); Standby: 97 kW (130 HP)
• Fuel System: WF PW direct injection with electronic governor
• Fuel Consumption: 21.0 L/h at 100% load standby, 18.8 L/h at 100% load prime

• Weight: Approx. 355 kg

Product Advantages

• Higher Power Density – Delivers up to 97 kW standby, almost double the output of the 4BT3.9-G2.
• Efficient Cooling – Jacket-water aftercooling improves combustion efficiency and reduces thermal stress.
• Reliable Operation – Turbocharged engine with Cummins direct injection technology.
• Compact Design – Lightweight and easy to integrate into small generator sets.
• Low Fuel Consumption – Optimized governor ensures stable operation with reduced costs.

• Service and Support – Backed by Cummins’ global parts and service network.

Key Features

• 3.9L inline 4-cylinder diesel engine for generator set applications.
• Turbocharged with water-jacket aftercooling (ATA).
• Delivers 87 kW prime and 97 kW standby at 1500 rpm.
• Compact size and lightweight design, only 355 kg wet.
• Reliable 24V electrical starting and charging system.

• Built to meet GB 20891-2007 emission standards.

Applications

The Cummins 4BTA3.9-G13 Generator Drive Engine is widely used for:

• Small and medium-sized generator sets.
• Commercial buildings, hotels, and retail facilities.
• Light industrial backup systems.
• Hospitals, schools, and emergency standby power.

• Construction sites and off-grid applications.

Product Availability

The Cummins 4BTA3.9-G13 Generator Drive Engine is available globally through Cummins’ authorized distribution network, with comprehensive technical support, after-sales service, and access to genuine Cummins generator engine parts for dependable long-term power generation.