Baudouin 640kW Diesel Engine 6M31G725/5

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Bradley: +27 62 743 5089 | bradley@sdecpower.co.za
Ruan: +27 66 511 2009 | ruan@sdecpower.co.za

We offer industry leading 24 month / 1,000 hour warranties on our engines and diesel generators.

The Baudouin 640kW Diesel Engine (6M31G725/5) is a vertical inline six cylinder engine engineered for high capacity power supply in heavy commercial, agricultural and industrial applications. This 18.5 litre diesel engine provides power for large scale 650kVA prime to 715kVA standby generator sets.

  • Power Output: Supplies 640kW standby power at 1500 RPM and handles large load steps without frequency drop off.
  • Advanced Induction: Combines turbo charging with an air to air aftercooling loop to maintain stable transient performance under load.
  • Starting Circuit: Employs a heavy duty 24V starting system with a 10kW cranking motor for fast emergency engine activation.
  • Support & Delivery: Distributed by The Generator King with expert technical alignment and comprehensive regional parts availability.

We offer delivery across Sub-Saharan Africa at the best prices.

LEADING GENERATOR MANUFACTURER

For over 100 years, Baudouin has designed and manufactured the highest quality diesel engines for marine and power generation applications globally

GENERAL SPECIFICATIONS

Baudouin 640kW Diesel Engine

High Capacity Industrial Power Supply

This 640kW engine provides reliable power output for large scale commercial, agricultural and industrialapplications. It couples directly with major industrial alternators to supply continuous electricity when the main utility grid fails.

Common Rail Fuel Optimisation

The 18.5 litre engine features a high pressure common rail fuel delivery system paired with an Engine Control Unit. This setup monitors performance constantly to ensure precise speed regulation and efficient fuel usage under volatile load conditions.

Thermal Efficiency and Temperature Control

An integrated liquid cooling system controls internal mechanical heat during long running periods. By circulating coolant uniformly across the six cylinder layout, the design manages keeps component wear low during extended operations.

Key Technical Features
  • Forced Induction: The turbo charged setup paired with an aftercooler maximises air intake density to deliver high torque output.
  • Precise Speed Governing: Electronic engine management controls speed fluctuations immediately when large electrical loads connect.
  • Dependable Firing: The high torque 10kW motor and dual battery starting network ensure prompt engine ignition in all weather conditions.
  • Manufacturing Quality: Produced under European quality frameworks to guarantee dependable operation in demanding conditions.

PRODUCT SPECIFICATIONS

Weight 1627 kg
Dimensions 223.4 × 140 × 174.2 cm
Brand

Baudouin

Product Type

Diesel Engine

Prime Power (kW)

580kW

Standby Power(kW)

640kW

Prime Power

650kVA

Standby Power

715kVA

Cylinders

Cylinders: 6, Valves: 24

Cylinder Arrangement

Inline

Bore × Stroke

149mm x 177mm

Displacement

18.5L

Thermodynamic Cycle

Diesel 4 Stroke

Firing Order

1-5-3-6-2-4

Mean Piston Speed (m/s)

8.9 m/s

BMEP @ ESP (Bar)

27.7 Bar

Cooling System

Liquid (water + 50% antifreeze)

Injection System

Direct Injection

Fuel System

High Pressure Common Rail

Aspiration

Turbo Charged with Aftercooler

Compression Ratio

14 : 1

Flywheel Housing (SAE)

SAE NO.1

Flywheel Clutch Size (Inches)

14"

Teeth on Flywheel Ring Gear

141 Teeth

Inertia of flywheel (kg•m²)

2.05 kg•m²

Inertia of crankshaft (kg•m²)

1.13 kg•m²

Emission Standard

N/A

Air Intake Temperature Rise

≤ 15°C

Minimum Diameter of Intake Pipe (mm)

150mm

Aftercooler System Type

Air to Air

Oil Capacity (L)

High Level: 60 litres, Low Level: 42 litres

Oil pressure in normal condition at 1500 Rpm @ PRP (Bar)

3.5 Bar – 5.8 Bar

Maximum Oil temperature (°C)

125°C

Oil Flow at 1500RPM (L/min)

295 L/min

Total Heat Dissipation @ ESP (kJ/s)

813.1 kJ/s

Maximum Exhaust Back Pressure (mBar)

100 mBar

Maximum Exhaust Temperature Before Turbocharger (°C)

830°C

Maximum Exhaust Temperature After Turbocharger (°C)

680°C

Exhaust Gas Flow

120.5 m³/min

Minimum Diameter of Exhaust Pipe (mm)

190mm

Maximum Bending Moment of Exhaust Gas Exit Flange (Nm)

18 Nm

Governor

ECU

Governor Steady State Speed Stability at Constant Load (ISO 8528-5 Class G3)

≤ +/- 0.5 %

Fuel Supply Flow (L/hr)

800 L/hr

Fuel Type

Diesel Fuel Oil

Electrical System Voltage (negative to ground) (Vdc)

24Vdc

Starter Power (kW)

10kW

Battery Charger Current (A)

80A

Battery Charger Absorbed Power (kW)

2.2kW

Diesel Engine Noise (Acoustic Power Level) (dB(A))

117.6 dB

Fuel Consumption @ 100%

131 l/h

Fuel Consumption @ 75%

97 l/h

Fuel Consumption @ 50%

66 l/h

Fuel Consumption @ 25%

37 l/h

Category:
A partner in power generation

World Class Manufacturing, Fast Regional Distribution

The Generator King is the sole authorised distributor of StromerPower Alternators in Sub-Saharan Africa. By dealing with us directly you cut out the middlemen, saving you time and money.

Every engine, alternator, and spare part we supply is built to international standards and fully tested to handle tough conditions. Whether you are a local generator builder looking for a StromerPower alternator, a diesel engine, OEM spare parts or a business needing a complete power setup, we ensure fast delivery, large stock availability and reliable performance.

STROMERPOWER FACTORY |  MANUFACTURING & ASSEMBLY LINE

Our Delivery Channels

Sub-Saharan Logistics

We ship StromerPower alternators, leading brand diesel engines and OEM diesel generators as well as OEM spare parts throughout South Africa and across the continent, including Namibia, Botswana, Malawi, Mozambique, Zambia, Zimbabwe, Swaziland, and Lesotho.

Our team handles the entire logistics process, from factory  loading to cross border transport, ensuring your equipment arrives safely and on time.

We hold a large volume of stock and genuine replacement parts at our warehouses so we can supply clients across Africa quickly and efficiently.

FREQUENTLY ASKED QUESTIONS

Does the price include installation?

No, installation is not included in the price. Any qualified electrician can install the kit and provide a Certificate of Compliance (COC) for the installation as per legislation.

Do you offer installation?

No, we do not offer any installation services, but, any qualified electrician can install our products.

Does the price include delivery?

Delivery is not included in any of the prices. However, delivery will be calculated in your cart at checkout based on your location and product selection.

Tell me about the Warranty

Our product warranty  is detailed on each product page and as per our standard terms along with a valid COC. It is a limited warranty.

Price validity

All pricing is valid while stocks last as reflected on your quotation, as specified therein.