Yuchai Series Generators
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Yuchai Series Generators

Standby Power(KW/KVA): 33/42~3300/4125
Prime Power(KW/KVA): 30/37.5~3000/3750
No.of Cylinder: 4.L~16.V
Bore x Stroke(mm): 108X115~200X210
Gross Weight(kg): 750~25000

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This series diesel generator set is powered by Perkins Series Diesel Engine. The engine has the features of good power performance, safety , low fuel consumption and good reliability. This series generator set is widely used as prime or standby power in fieldwork, building, supermarket, industrial and mining factories, oil fields, highway, harbour and so on.

Product Advantages

1. Reliable and Durable Structure

Utilizing a high-strength alloy body with curved reinforcing ribs on both sides, it significantly enhances overall rigidity and vibration absorption, ensuring stability during continuous industrial operation and reflecting the diesel generator manufacturer’s pursuit of ultimate reliability.

2. Superior Heat Dissipation Control

Through an optimized cooling system equipped with dedicated nozzles for continuous and directional oil injection cooling of the pistons, the heat load on the core areas of the diesel engine is efficiently reduced, extending the service life of critical components. This is a key design feature for ensuring sustained power output for industrial generator suppliers.

3. Intelligent Safety Configuration

Integrating an advanced electronic monitoring system and emergency stop device, it can monitor key parameters such as water temperature, oil pressure, and speed in real time, automatically alarming and executing emergency shutdowns in case of abnormalities. This comprehensive protection for operational safety demonstrates the professional assurance capabilities of the engine and generator manufacturer.

4. High-Efficiency and Energy-Saving Operation

The precision-matched fuel supply system expands the engine’s high-efficiency operating range, ensuring the unit maintains low fuel consumption within the commonly used load range. This helps users effectively reduce operating costs and is a core value provided by generator set manufacturers and suppliers.

Maintenance Checklist

1. Daily pre-start check.

2. Engine crankcase oil consumption.

3. Coolant level: Check for blockages in the radiator and intercooler coils.

4. Air filter blockage.

5. Check every 50 hours.

6. Battery and fluid levels: Check for leaks of water, fuel, and engine oil.

7. Every 250-300 hours: Change engine oil, replace oil filter and bypass oil filter, replace fuel filter, drain fuel tank if necessary, and tighten V-belt.

8. Check radiator and air-cooled intercooler coils for blockages and cleaning; check air ducts and hose connections for defects and tighten clamps; check turbocharger oil inlet and outlet for leaks.

9. Every 1200 hours, please have a professional check and adjust the valve clearance. The check and adjustment should be performed with the engine stopped and cold.

Product Parameters

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Diesel Generator Winter Protection: Essential Tips for Cold Weather Operation

With the arrival of winter and the sharp drop in temperature, many businesses and individuals relying on diesel generator sets for backup or main power are beginning to focus on a core issue: how to ensure the stable and reliable operation of diesel generators in frigid weather? Faced with the challenges of low temperatures, even high-quality diesel generators may face starting difficulties, reduced operating efficiency, or even equipment damage if proper winter protection measures are lacking. As a professional diesel generator manufacturer, we understand the complexities of winter operation and have therefore carefully prepared this comprehensive winter protection guide to help you avoid unnecessary losses and ensure a continuous and stable power supply.

1. The Core Challenges of Winter Operation: Why Do They "Stop" in Cold Weather?

In cold environments, diesel generator sets face multiple threats of “stopping”:

Fuel Solidification and Blockage: Ordinary diesel fuel will release paraffin at low temperatures, causing blockages in fuel lines and filters, resulting in poor fuel supply and preventing the engine from starting. This is one of the most common failures in winter and a factor that many generator manufacturers consider during the design phase.

Increased Engine Oil Viscosity: Low temperatures significantly increase engine oil viscosity, which not only increases starting resistance and accelerates component wear but may also affect lubrication, damaging the engine.

Degraded Battery Performance: Lead-acid batteries exhibit slower chemical reaction rates at low temperatures, leading to a significant decrease in capacity and starting current, resulting in insufficient power support for the starter motor.

Coolant Freezing: If antifreeze is not used in the cooling system or the antifreeze ratio is incorrect, the coolant will freeze and expand at low temperatures. This can cause minor issues like cracking the radiator and water pump, or even serious damage to the cylinder block, resulting in severe losses.

2. Comprehensive Winter Protection Recommendations

To address these challenges, our diesel generator manufacturer recommends the following comprehensive winter protection measures:

Choose Low-Temperature Diesel and Fuel Additives:

Select the appropriate grade of light diesel fuel based on the local minimum winter temperature. For example, northern regions may require -20#, -35#, or even lower grade diesel fuel.

Add an appropriate amount of diesel pour point lowering agent or anti-gelling agent to the fuel to further improve its low-temperature fluidity.

Change to Low-Temperature Engine Oil:

Replace regular engine oil with winter-specific low-temperature engine oil. Its lower viscosity and better flow at low temperatures effectively reduce starting resistance and protect the engine.

Please refer to your generator set’s operation manual and select engine oil that meets the manufacturer’s recommended specifications.

Ensure Cooling System Antifreeze:

Always use antifreeze that meets national standards and ensure its freezing point is 5-10°C lower than the local winter minimum temperature.

Regularly check the antifreeze level and antifreeze performance, and replenish or replace it as needed. Never use water as a coolant, especially when unattended.

Maintain the Battery and Ensure it is Fully Charged:

Regularly check the battery electrolyte level and add distilled water.

Ensure the battery is fully charged. If necessary, install a battery heater or charger to preheat or charge the battery before starting.

Keep the battery terminals clean and secure to prevent poor contact.

Preheating Devices:

Water Jacket Heater: This is the most common preheating method. It automatically heats the cooling water when the generator set is not running, maintaining the engine block temperature and significantly improving the starting success rate. Many professional generator manufacturers include this device as standard on winter-grade generator sets.

Fuel Heater: Preheats the fuel to prevent it from solidifying at low temperatures.

Oil Heater: Preheats the engine oil, reducing viscosity and starting resistance.

For cold regions, it is recommended to install heating equipment in the generator room to maintain indoor temperature.

Insulation Measures:

If the generator set is installed outdoors, a windproof and snowproof shed should be built, and the external structure of the unit should be insulated.

For parts susceptible to freezing, such as cooling water pipes and fuel pipes, insulation materials can be used for wrapping.

3. Winter Safe Starting and Operation Procedures

Pre-start Checks:

Check the fuel tank level to ensure the fuel meets winter operating standards.

Check the engine oil level to ensure the engine oil meets winter operating standards.

Check the coolant level and antifreeze performance.

Check battery voltage and wiring for tightness.

Ensure all switches are in the correct positions and check for oil, water, or air leaks.

Preheating:

If equipped with a water jacket heater, check that it is functioning properly. Wait until the cylinder block temperature reaches the set value before attempting to start.

If no preheating device is available, manually preheat the engine appropriately, for example, by running it under low load for a short period, but please proceed with caution.

Starting and Low-Load Operation:

When starting, follow the manufacturer’s instructions. Avoid prolonged continuous starting to prevent damage to the starter motor and battery.

After successful starting, do not immediately run under load. Allow the engine to run under no-load or low-load conditions for 5-10 minutes to gradually increase engine temperature and allow the engine oil to fully lubricate all components.

Monitoring During Operation:

Closely monitor the generator set’s operating parameters, such as water temperature, oil pressure, speed, voltage, and current, ensuring all indicators are within normal ranges.

Observe for any abnormal noise, vibration, or odor.

Shutdown Procedure:

Before shutting down, unload the load and allow the generator set to run under no-load for 5-10 minutes until the temperature gradually decreases before shutting down to avoid localized overheating.

Conclusion

Winter presents significant challenges for diesel generator sets, but by following proper winter protection strategies and operating procedures, you can ensure your generator set maintains efficient and reliable operation in cold weather. As a professional diesel generator manufacturer, we are committed to providing our customers with the highest quality products and comprehensive technical support. If you have any questions about winter protection or need to purchase high-quality diesel generator sets, please feel free to contact us. Our generator factory will be happy to serve you.

FAQ

Q1: How often do I need to change the antifreeze?

A1: The antifreeze replacement cycle is usually 2-3 years, but please refer to the product manual for specific details. Regularly checking the antifreeze’s freezing point and pH value is crucial.

Q2: My generator set has difficulty starting in winter. Is the battery faulty?

A2: Not necessarily. Low temperatures can severely affect battery performance. If starting is still difficult after confirming the battery has sufficient charge and is properly connected, consider checking if the preheating device is working properly, or if the fuel and engine oil meet winter usage requirements.

Q3: Can I use regular diesel fuel in winter and add more additives?

A3: Not recommended. While additives can improve fuel’s low-temperature fluidity to some extent, the effect is limited. The safest approach is to choose a low-temperature diesel fuel grade appropriate for the local temperature.

Q4: What special precautions should be taken when operating a generator set in winter?

A4: In addition to the protective measures mentioned above, it is also necessary to maintain good ventilation in the generator room to prevent exhaust gas buildup. Regular maintenance of the generator set should also be performed to ensure all components are in good working order.

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