50HZ Yuchai YC4D140-D31 80kW/100kVA Diesel Generator Set

50HZ Yuchai  80kW/100kVA Diesel Generator Set

1. Full Technical Parameter Table

The following table integrates official factory calibration data, original engine parameters and industry-standard universal configurations of the Yuchai YC4D140-D31 diesel generator set. All technical indicators are verified through bench testing and long-term field operation, covering complete generator set power performance, YC4D140-D31 diesel engine core parameters, alternator configuration and daily operating specifications. This standardized parameter sheet supports equipment selection, project bidding, on-site installation, commissioning and routine maintenance for industrial, engineering and commercial users.

2. Product Features

The Yuchai YC4D140-D31 80kW/100kVA diesel generator set is a high-reliability medium-large power generation equipment built on Yuchai mature 4D series industrial turbocharged platform. As a mainstream 100kVA diesel generator widely used in industrial manufacturing and infrastructure engineering, this unit is equipped with original YC4D140-D31 turbocharged intercooled diesel engine, adopting Bosch high-precision electronic common rail fuel injection technology. It features sufficient power reserve, accurate fuel control and excellent continuous operation stability, effectively solving the problems of insufficient surge resistance and unstable power output of ordinary 80kW diesel generator sets under long-term high-load working conditions.

In terms of power supply performance, the unit supports 80kW long-term uninterrupted prime power operation and 88kW emergency standby power output. The engine reserves up to 95kW rated power, providing abundant power margin for instantaneous startup of multiple high-power equipment and frequent load switching. Even during 24-hour continuous high-load operation, there is no obvious voltage drop or frequency drift, always maintaining standard 50Hz three-phase balanced voltage output. Matched with industrial-grade brushless self-excited alternator and high-sensitivity AVR automatic voltage regulator, the current fluctuation is extremely small. With H-grade ultra-high temperature resistant insulation structure, the alternator can resist heat aging and insulation breakdown caused by long-duration high-load operation, providing stable and safe power guarantee for industrial precision instruments and large mechanical equipment.

Low maintenance cost and strong environmental adaptability are the core practical advantages of this Yuchai 80kW standby diesel generator set. Different from traditional brushed generators that require regular carbon brush inspection and replacement, the brushless self-excited design cancels all wearable vulnerable parts, realizing long-term maintenance-free daily operation. It greatly reduces on-site equipment maintenance workload and later operational investment, making it very suitable for unattended factory standby power and outdoor long-term power supply scenarios. The IP23 professional protection grade can effectively block outdoor dust, debris and splashing rainwater, adapting to open-air placement and harsh construction site environments. The optimized integrated cylinder head water outlet pipe design reduces sealing interfaces and improves overall structural tightness and operational stability, lowering the failure rate of water leakage and air leakage.

In terms of fuel economy and operational reliability, the YC4D140-D31 engine adopts turbocharged intercooled air intake and ω-type direct injection combustion technology, making fuel combustion more sufficient and uniform. The full-load fuel consumption is stably controlled at 25.6L/H, with stable fuel-saving performance in variable-load operation, avoiding unnecessary fuel waste. The four-cylinder in-line water-cooled structure runs smoothly with low vibration and low noise, reducing mechanical loss during high-intensity operation. The closed circulating water cooling system ensures continuous and efficient heat dissipation, effectively preventing overheating shutdown faults in high-temperature summer environments. Meanwhile, the complete intelligent safety protection system can automatically alarm and shut down in case of low oil pressure, high water temperature, overload, short circuit and overspeed, fully protecting the unit and improving operational safety.

The whole machine adopts compact integrated base design with reasonable internal layout and small floor space, supporting fixed indoor installation and mobile trailer refitting. It can meet the dual needs of long-term fixed emergency standby power for industrial plants and short-term mobile temporary power for large-scale engineering construction. Complying with non-road National Stage III emission standards, the unit has low exhaust pollution and meets environmental protection requirements of various industrial parks and municipal construction zones. Backed by Yuchai’s strict factory quality inspection and nationwide after-sales service network, this 100kVA diesel generator has stable quality, low failure rate and high cost performance, which is a cost-effective choice for medium and large power demand scenarios.

3. Application Scenarios

With strong high-load resistance, fast transient response, stable power output and diverse installation forms, the YC4D140-D31 Yuchai diesel generator set covers multiple core fields including industrial emergency standby power, municipal key engineering temporary power supply, outdoor field off-grid power generation and commercial public facility backup power, adapting to various complex working environments with medium and high power demand.

3.1 Industrial Production Emergency Standby Power

This 80kW diesel generator is widely used as backup power equipment for medium and large processing factories, mechanical manufacturing bases, food processing enterprises, constant-temperature cold storage and industrial supporting facilities. For industrial production lines and precision processing equipment that cannot tolerate sudden power outage, the unit can start quickly and complete seamless power switching after municipal grid failure. Its excellent load impact resistance effectively avoids batch product scrapping, mechanical equipment burnout and production progress stagnation caused by power interruption, ensuring the continuous and stable operation of industrial production systems.

3.2 Municipal & Large-scale Engineering Temporary Power

It is the preferred temporary power supply equipment for urban road renovation, municipal pipeline upgrading, water conservancy projects, bridge engineering and infrastructure expansion. Sufficient power reserve and fast load response speed can fully meet the simultaneous power consumption of multiple large welding machines, cutting equipment, engineering machinery and on-site full-coverage construction lighting. The dust-proof and vibration-resistant body structure adapts to muddy and dusty harsh construction site environments, and the flexible mobile design supports frequent cross-site transfer, greatly improving engineering power supply efficiency and project construction progress.

3.3 Outdoor Field Off-grid Power Supply

The unit is perfectly applicable for large-scale field geological exploration, forest ecological protection, outdoor emergency rescue engineering, remote mountain infrastructure construction and field scientific research base operation. In remote areas without municipal grid coverage, it serves as an independent mobile power station to provide long-term stable 380V three-phase high-power power for field detection instruments, communication relay equipment and large operational auxiliary facilities. The reliable DC24V electric start system ensures smooth one-key startup in low-temperature, dry and high-altitude field environments with strong environmental tolerance.

3.4 Large Commercial & Public Facility Backup Power

It is commonly equipped for emergency standby power of large business districts, high-star hotels, large supermarkets, scenic area supporting facilities, communication base stations and hospital auxiliary power systems. During municipal grid power failure, peak power limit or line maintenance periods, the unit provides stable power guarantee for building lighting, monitoring systems, weak current equipment and public service facilities, avoiding public service paralysis and economic losses caused by power outages, and ensuring the normal operation of urban key public facilities.

4. Core Purposes

The core purpose of the Yuchai YC4D140-D31 80kW/100kVA diesel generator set is to provide high-stability emergency standby power and high-reliability off-grid mobile high-power power supply for large industrial production, key engineering construction and urban public service fields. It solves various power supply risks such as municipal grid instability, sudden power failure and no grid coverage, and guarantees the continuous, safe and efficient operation of medium and large high-power electrical equipment. It is a multi-functional universal power generation equipment integrating industrial standby and engineering temporary power generation.

Firstly, it undertakes critical emergency power backup tasks for industrial enterprises. As a high-performance 100kVA standby diesel generator, it has abundant power reserve and ultra-fast transient response capability. It can automatically start and complete power switching in a short time after sudden grid power failure, effectively avoiding large-area industrial production shutdown losses and mechanical equipment safety accidents caused by power interruption, and protecting the stable operation of factory production lines and precision industrial systems.

Secondly, it provides sustainable high-power off-grid power support for key engineering and remote field scenarios. In large-scale municipal engineering construction and unpowered remote areas, the unit operates as an independent mobile power generation system, outputting standard 50Hz frequency and stable three-phase high-power voltage. It fully meets the simultaneous high-load power demand of multiple large engineering mechanical equipment, solving the long-term power supply bottleneck of large-scale off-grid construction and field operation teams.

Thirdly, it balances high-power performance and long-term operational economy. With calibrated 25.6L/H full-load fuel consumption and Yuchai’s mature turbocharged intercooled energy-saving combustion technology, the unit maintains controllable comprehensive operating costs while delivering strong high-load power output. The brushless maintenance-free design and IP23 high-standard protection structure greatly reduce equipment failure rate and later maintenance investment, realizing long-term stable and low-cost high-intensity power generation operation.

Finally, as a classic upgraded model of Yuchai 4D series medium-large power generator sets, it fills the market gap of high-reliability 80kW industrial power generation equipment. It perfectly matches the power demand of medium and large industrial enterprises, key engineering construction teams and urban public property management units, and has become one of the most cost-effective and widely recognized medium-large power diesel generator sets in the industry.

5. FAQ - Common Frequently Asked Questions

Q1: What is the actual fuel consumption of YC4D140-D31 generator set under different working loads?

A1: The official factory calibrated full-load (100% load) fuel consumption of this Yuchai 100kVA diesel generator set is 25.6L/H. In actual on-site operation, fuel consumption changes linearly with the working load. Under 50% light load, the fuel consumption is about 12.6-13.5L/H; under 75% conventional daily working load, the fuel consumption is controlled at 19.2-20.0L/H. Adopting Bosch electronic common rail fuel injection and turbocharged intercooled combustion technology, fuel injection volume is precisely controlled with full combustion. The fuel consumption curve remains stable during long-term continuous operation, with no sudden fuel surge, helping users accurately control daily power generation costs for industrial standby and engineering temporary power supply.

Q2: What are the core advantages of the brushless self-excited alternator configured on this unit?

A2: This Yuchai 80kW diesel generator adopts industrial-grade brushless self-excited alternator, which has obvious practical advantages over traditional brushed alternators for medium and high-power scenarios. Firstly, it eliminates wearable carbon brush components, realizing true long-term maintenance-free operation, saving regular replacement and maintenance costs, and reducing on-site equipment management pressure for unattended working conditions. Secondly, matched with intelligent AVR automatic voltage regulation technology, the voltage fluctuation rate is extremely low, outputting ultra-stable current, which can effectively protect large industrial equipment and precision instruments from burnout caused by unstable voltage. Thirdly, equipped with H-grade ultra-high temperature insulation and IP23 dustproof and rainproof protection grade, the alternator adapts to high-temperature, dusty and humid harsh environments, with strong environmental adaptability and long service life.

Q3: How is the startup stability and environmental adaptability of the YC4D140-D31 generator set?

A3: This medium-large power Yuchai generator set has excellent startup reliability and environmental tolerance. It adopts standard DC24V electric start system with optional ATS automatic start function, supporting one-key quick startup in low-temperature, dry and high-altitude environments without manual auxiliary operation. The applicable ambient temperature ranges from -15℃ to 45℃, adapting to seasonal temperature changes in most regions. The closed circulating water cooling system effectively controls operating temperature, avoiding overheating shutdown during 24-hour continuous full-load operation in high-temperature summer environments. The IP23 professional protection grade resists daily dust erosion and splashing rainwater, supporting outdoor open-air placement and indoor fixed installation. It operates stably in industrial production, engineering construction, field operation and public facility scenarios with strong universal compatibility.