Yuchai Diesel Generator Set

The Yuchai diesel generator set by Kecheng as a professional factory is a set of power generation equipment that has been long-term verified by the market and has stable performance. This series of units takes Yuchai series engines as the power core. Relying on their extensive market application foundation, they feature a relatively low failure rate and good fuel economy. The product power ranges from 20 to 1,500 kilowatts, capable of adapting to various environmental conditions and meeting the electricity demands of different scenarios, from household backup and commercial emergency to industrial production and engineering construction. The unit is strictly produced in accordance with relevant national standards. Core components are covered by a two-year warranty. The greater the power, the more comprehensive the guarantee. Whether used as a regular power source or an emergency backup, this product, which has been deeply collaborated with Yuchai, can provide reliable power support.

It covers three power ranges: small (20-100KW), medium (100-500KW), and large (500-1500KW)

Application scenarios (Exclusive adaptation for Yuchai Power)

1. Civil and community emergency scenarios (20-100KW)

• Applicable scenarios: Old communities (emergency power supply for elevators and water pumps), residential communities (public lighting/charging piles during power outages), small nursing homes (basic medical equipment/living facilities)

• Core Value: The failure rate of Yuchai YC4F engine is ≤0.5% per year. It starts within ≤15 seconds after power failure, avoiding elevator entrapment and interruption of medical equipment for the elderly. The noise of the unit is ≤70dB@10 meters (for small models), which complies with the noise standards for residential areas. With a full tank of fuel, it can last for 8 to 12 hours, meeting the short-term emergency needs of civilian use and requiring no frequent maintenance.

2. Commercial and service venue scenarios (50-300KW)

• Applicable scenarios: Chain supermarkets (cold chain refrigerators/backup cash register systems), star hotels (room air conditioning/international conference center equipment), community clinics (infusion pumps/basic testing instruments)

• Core value: The fuel consumption of Yuchai YC6B/YC6L engines is as low as 205g/(kW · h), and the annual operating cost is 15%-20% lower than that of similar units. Kecheng Intelligent ATS enables shock-free switching between "mains power" and "power unit" (≤0.5 seconds), preventing food from deteriorating due to power outages in the cold chain. Supports remote monitoring via mobile APP, and one person can manage multiple store units.

3. Industrial and manufacturing scenarios (300-1500KW)

• Applicable scenarios: Light industry factories (backup for textile/food production lines), auto parts factories (emergency power supply for precision machine tools), small and medium-sized chemical workshops (auxiliary power supply for reaction vessels)

• Core Value: Yuchai YC6MK/YC6C engines can withstand continuous full-load operation for 24 hours (annual operating time ≥ 8,000 hours), making them suitable for industrial continuous production. The high-voltage model (6kV) is directly connected to the industrial power grid, reducing the investment in voltage reduction equipment. Yuchai engine's after-sales network covers the whole country, and the fault response time is no more than 4 hours.

4. Engineering and infrastructure scenarios (100-1000KW)

• Applicable scenarios: Highway construction (mixing plants/box girder pouring equipment), urban subway construction (auxiliary power supply for shield machines/tunnel ventilation), rural water supply projects (pump station backup/pipeline pressure testing equipment)

• Core Value: Yuchai engines have reinforced pistons and crankshafts, capable of withstanding 2.5 times the starting current (suitable for engineering motor loads), preventing stalling during startup. Kecheng anti-vibration structure (the body frame is thickened to 8mm), suitable for bumpy transportation at construction sites. IP54 dust and water resistance, resistant to engineering dust and rain environments.

5. Remote areas and outdoor scenarios (50-500KW)

• Applicable scenarios: Communication base stations in mountainous areas (backup power supply for signal equipment), border guard posts (auxiliary power for domestic use and heating), island fishing villages (charging for seawater desalination equipment and fishing boats)

• Core value: Yuchai engines can start at -30 ℃ (preheater is optional), making them suitable for remote low-temperature environments. The fuel consumption rate is as low as 200g/(kW · h) (for medium-sized models), and the long-term on-site operation cost is controllable. Yuchai's service network covers remote areas, and spare parts supply is convenient, so there is no need to worry about after-sales problems.

Product Advantages (Core Competitiveness of Yuchai Power)

Technical parameters (Full power range: 20-1500KW)

Technical Features (Exclusive design for Yuchai Power)

1. Core technologies of Yuchai engines

• Small models (20-100KW, YC4F/YC6B) :

① Adopting the "high-pressure common rail (1600bar) + turbocharged intercooling" technology, the combustion efficiency is increased by 12%. When starting at low temperatures, it can be started through the intake preheating plug (-20℃ can be started).

② Lightweight design (the overall weight of the YC4F is only 320kg), with a small overall volume of the unit, making it suitable for community and convenience store scenarios with limited space.

③The oil consumption rate is as low as 0.5g/(kW · h), reducing the frequency of oil replenishment and lowering maintenance costs.

• Medium-sized models (100-500KW, YC6MK/YC6L) :

①The Yuchai YC6MK is equipped with a "variable Geometry Turbocharger (VGT)", which increases low-speed torque by 30% (torque ≥1200N · m at 1500r/min), making it suitable for starting engineering motors.

② The dual overhead camshaft (DOHC) design ensures more precise valve control and meets the National III emission standards, making it suitable for commercial scenarios with high environmental protection requirements.

③ Yuchai's original factory cooling system (water pump + fan) has a high heat dissipation efficiency and can operate at full load in a high-temperature environment of 50℃.

• Large models (500-1500KW, YC6C/YC6K) :

①The Yuchai YC6C is a heavy-duty in-line 6-cylinder engine. Its cylinder block is made of vermicular graphite cast iron (with a strength 70% higher than that of ordinary cast iron), which can withstand heavy industrial load impacts.

② Exhaust after-treatment system (SCR+DPF), meeting the National IV/Euro V emission standards, is suitable for industrial parks with strict environmental protection requirements;

③ Yuchai's intelligent ECU control system can monitor the engine's operating conditions in real time. Fault codes can be read through the Kecheng controller, facilitating quick troubleshooting.

2. Kecheng customized integration technology

• Intelligent controller (KCPLC series) :

① Small model (KCPLC-03) : Displays core parameters such as voltage, current, and water temperature, and supports basic fault alarm (high water temperature, low oil pressure);

② Medium-sized model (KCPLC-04) : New features include remote monitoring via mobile APP (4G network connection) and peak-valley power consumption management (automatic adjustment of output power).

③ Large-scale models (KCPLC-05) : Supports high-voltage parameter monitoring (6kV voltage/current), multi-machine parallel control (load balancing deviation ≤5%), and can be connected to industrial DCS systems.

• Protective and adaptive structure:

①Dust-proof and water-proof: Small and medium-sized models offer IP54 protection (double-layer sealing of the body + 50-mesh dust filter), while large models can be optionally equipped with IP65 (fully sealed, resistant to short-term immersion).

② Anti-vibration and anti-corrosion: The body frame of medium and large-sized models is welded with 16Mn manganese steel, and the surface is sprayed with zinc + anti-corrosion paint (salt spray resistance test ≥1000 hours), suitable for engineering and coastal scenarios.

③ Convenient deployment: For small models, a trailer type (pickup truck towing) is available. For large models, a modular design is adopted (block transportation and on-site assembly), with an installation period of no more than 4 hours.

3. Exclusive adaptation and optimization for Yuchai

• Fuel system: Compatible with the requirements of Yuchai engines, it adopts the original fuel filter element of Yuchai (filtration accuracy 10μm), and the fuel pipeline uses oil-resistant rubber hoses (designated brand of Yuchai) to prevent engine failure caused by fuel impurities.

• Lubrication system: Yuchai special engine oil (YC-40, conforming to API CJ-4 standard) is used. The oil change cycle is 20% longer than that of general engine oil, reducing engine wear.

• After-sales linkage: The Kecheng controller can read the ECU fault code of Yuchai engines. When a fault occurs, it will be synchronously pushed to the Yuchai after-sales system, achieving seamless connection of "fault diagnosis - spare parts allocation - on-site maintenance".

Power Selection (Yuchai Power Precise Matching)

1.Core selecting basis

2.Power recommendation for typical scenarios

Usage Method (Exclusive operation for Yuchai units)

1.Pre-startup inspection (Key points for Yuchai engines)

2.Startup operation (power division process)

(1) Small models (20-100KW, YC4F/YC6B)

1. Preheating start: Open the fuel valve → Switch to the "Manual" mode of the Kecheng controller → Press the "Preheating" button in a low-temperature environment (the Yuchai preheating plug works and the light goes out to complete the process) → Press the "Start" button.

2. Status Check: After the engine starts, observe the rotational speed (1500r/min±50r/min) and oil pressure (≥0.3MPa, with the original Yuchai pressure gauge), and keep them stable for 3 minutes.

3. Loading operation: Close the output switch and gradually load (first increase the load to 50%, run for 5 minutes and then increase to 100%) to avoid impacting the Yuchai engine.

(2) Large models (500-1500KW, YC6C/YC6K)

1. High-voltage preparation: Confirm that the "grounding switch" of the high-voltage switch cabinet is open → the "disconnector" is closed → Check for no electricity.

2. Startup process: Hydraulic start → Engine speed rises to 1500r/min→ Check Yuchai ECU parameters (water temperature and oil pressure are normal) → Close the high-voltage circuit breaker;

3. Staged loading: Load in the order of "20%→50%→80%→100%" (with a 5-minute interval between each stage), and monitor the load rate of the Yuchai engine (≤100%) through the Kecheng controller.

3. Operation Monitoring and Shutdown (Yuchai Engine Protection)

• Monitoring focus: Real-time viewing of Yuchai engine ECU parameters (water temperature ≤95℃, oil pressure ≥0.2MPa, fuel pressure ≥0.8MPa), and the voltage/current displayed on the Kecheng controller.

• Exception handling:

① High water temperature of the engine: Check the Yuchai cooling system (coolant, fan), and clean the dust on the radiator.

② ECU fault code: Read the fault code through the Kecheng controller and contact Yuchai after-sales service for troubleshooting (for example, "P0234" indicates overpressure of the turbocharger).

• Shutdown process:

① Unloading: Disconnect the load and reduce it to no-load.

② Cooling: Run the Yuchai engine unloaded for 5 to 10 minutes (to cool the turbocharger);

③ Shutdown: Press the "Stop" button → Close the fuel valve → If the machine is to be shut down for a long time, drain the fuel (to avoid freezing in winter).

Safety and Protection (Yuchai Unit Specifications)

1. Safe installation (compatible with Yuchai power)

• Venue and Fixation:

① Install in a well-ventilated area away from open flames (≥15 meters), with the exhaust port of the Yuchai engine facing a no-personnel area (exhaust temperature ≥500℃).

② The ground load-bearing capacity should be no less than 1.5 times the weight of the unit. For small models of trailer type, the support legs need to be lowered; for large models of modular installation, the anchor bolts need to be fixed.

• Electrical safety:

① Grounding resistance ≤4Ω (low voltage) /≤10Ω (high voltage), and the grounding electrode should be reliably connected to the Yuchai engine block (to avoid static electricity).

② High-voltage models (6kV) must be equipped with high-voltage switch cabinets approved by Yuchai. When operating, wear insulating equipment (with a withstand voltage of 10kV).

• Fire protection configuration:

① Two 8kg ABC dry powder fire extinguishers (no more than 5 meters away from the unit) should be equipped. It is strictly prohibited to stack flammable materials around the Yuchai engine.

② Post a warning sign saying "Yuchai Power, non-operating personnel are prohibited from approaching". Do not open the maintenance door when the engine is running.

2. Operational Safety (Yuchai Engine Specifications)

• Personnel requirements:

①Operators must undergo joint training by Yuchai and Kecheng, be familiar with the operation norms of Yuchai engines, and operation without a license is strictly prohibited.

②Before starting the Yuchai engine, it is necessary to check the oil level (both are indispensable to avoid cylinder pulling). During operation, do not touch high-temperature components (exhaust manifold, turbocharger).

• Operating contraindications:

① Do not use non-Yuchai-specific engine oil/filter elements (otherwise, the Yuchai warranty will be lost).

② Do not start the Yuchai engine when there is no engine oil or coolant.

③ It is strictly prohibited to disconnect the high-voltage switch under load (to avoid impacting the Yuchai generator).

• Emergency response:

① Engine fire: Stop the machine immediately → Close the fuel valve → Use a dry powder fire extinguisher to put out the fire (do not use water);

② Oil leakage: Shut down the machine → Check the Yuchai oil pipeline (whether the joints are loose) → Replenish Yuchai-specific oil and then start again.

3. Maintain safety (Yuchai After-sales Standards)

• Preparations before maintenance:

① Disconnect the power supply of the unit, close the fuel valve, and hang a warning sign that reads "Under maintenance, do not start".

② Maintenance of Yuchai engines requires the use of original Yuchai tools (such as special wrenches), and spare parts must be genuine Yuchai products (Kecheng provides procurement channels).

• Core maintenance projects:

① Oil change: Replace the Yuchai-specific oil every 500 to 1000 hours (depending on the Yuchai engine model), and hand over the old oil to a qualified institution for disposal.

② Filter element replacement: The original fuel filter and air filter of Yuchai should be replaced every 500 hours, and the oil filter should be replaced simultaneously with the oil.

③ Engine inspection: Check the valve clearance and atomization state of the fuel injectors of the Yuchai engine every 2,000 hours (to be carried out by Yuchai's after-sales engineers).

Maintenance Cycle Table (Exclusive for Yuchai Units)