50HZ Yuchai YC4D155-D31 90kW/112.5kVA Diesel Generator Set

50HZ Yuchai  90kW/112.5kVA Diesel Generator Set

1. Full Technical Parameter Table

The following table sorts out official factory calibration data, original Yuchai engine core parameters and industry universal standard configurations of the YC4D155-D31 diesel generator set. All technical indicators are verified through bench testing and long-term field operation verification, covering complete unit power performance, diesel engine structure parameters, alternator configuration and daily operating specifications. This standardized parameter sheet can be directly used for equipment selection, engineering bidding, on-site installation guidance, commissioning and daily maintenance of industrial, engineering and commercial power supply projects.

2. Product Features

The Yuchai YC4D155-D31 90kW/112.5kVA diesel generator set is a cost-effective and high-reliability medium-power power generation equipment built on Yuchai mature 4D-T3 industrial engine platform. As a mainstream 112.5kVA diesel generator widely recognized in the industrial and engineering power supply market, this unit is equipped with original YC4D155-D31 turbocharged intercooled diesel engine, adopting Bosch electronic common rail fuel injection technology and integrated cylinder head water outlet structure. It solves the common pain points of ordinary 90kW diesel generator sets such as insufficient power reserve, poor load adaptability and easy leakage failure in long-term operation, and is deeply favored by users for its stable performance and low failure rate.

In terms of power supply performance, the unit supports 90kW long-term uninterrupted prime power operation and 100kW emergency standby power output. With 103kW rated engine power reserve, it retains sufficient power margin to cope with instantaneous startup surge of multiple high-power equipment and frequent load switching. Whether it is long-term stable operation under rated load or short-term overload emergency power supply, it can always maintain standard 50Hz frequency and three-phase balanced voltage output without obvious fluctuation. Matched with industrial-grade brushless self-excited alternator and high-precision AVR automatic voltage regulator, the current output is ultra-stable. Equipped with H-grade ultra-high temperature resistant insulation materials, the alternator can effectively resist heat aging and insulation breakdown caused by long-duration high-load operation, providing safe and stable power guarantee for industrial precision instruments and engineering mechanical equipment.

Low maintenance difficulty and strong environmental adaptability are the core practical advantages of this Yuchai 90kW standby diesel generator set. Different from traditional brushed generators that require regular carbon brush inspection and replacement, the brushless self-excited design eliminates all wearable vulnerable parts, realizing long-term maintenance-free daily operation. It greatly reduces on-site equipment maintenance workload and later operational costs, making it very suitable for unattended factory standby power and outdoor long-term off-grid power supply scenarios. The IP23 professional dustproof and rainproof 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, effectively lowering the risk of water and air leakage, and improving overall operational stability.

In terms of fuel economy and operational reliability, the YC4D155-D31 engine adopts turbocharged intercooled air intake system and optimized direct injection combustion technology, making fuel combustion more sufficient and uniform. The full-load fuel consumption is stably controlled at 27.6L/H, with stable fuel-saving performance in variable-load working conditions, avoiding unnecessary fuel waste during long-term operation. The four-cylinder in-line water-cooled structure runs smoothly with low vibration and low noise, reducing mechanical wear during high-intensity operation. The closed circulating water cooling system ensures continuous and efficient heat dissipation, completely avoiding overheating shutdown faults in high-temperature summer environments. Meanwhile, the comprehensive 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 eliminating potential safety hazards.

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 medium and large industrial plants and short-term mobile temporary power for municipal key projects. Complying with China Non-road Stage III emission standards, the unit has low exhaust pollution and meets environmental assessment requirements of various industrial parks and urban construction zones. Backed by Yuchai’s strict factory quality inspection and nationwide after-sales service network, this 112.5kVA diesel generator has stable quality, low failure rate and high cost performance, which is an ideal choice for medium-power power supply scenarios.

3. Application Scenarios

With excellent high-load resistance, fast transient response, stable power output and flexible installation forms, the YC4D155-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 public facility backup power, adapting to various complex working environments with medium-power demand.

3.1 Medium Industrial Production Standby Power

This 90kW diesel generator is widely used as emergency backup power equipment for mechanical manufacturing workshops, food processing plants, pharmaceutical factories, chemical auxiliary workshops and constant-temperature cold storage. 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 & Infrastructure Engineering Temporary Power

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

3.3 Outdoor Field Off-grid Power Supply

The unit is perfectly suitable for field geological exploration, forest ecological protection, outdoor emergency rescue engineering, remote mountain road construction and field scientific research base operation. In remote areas without municipal grid coverage, it acts 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 operational auxiliary facilities. The reliable DC24V electric start system ensures smooth one-key startup in low-temperature, dry and high-altitude environments with strong environmental tolerance.

3.4 Commercial & Public Service Facility Backup Power

It is commonly equipped for emergency standby power of large commercial plazas, high-star hotels, urban community clusters, scenic area supporting facilities, communication base stations and hospital auxiliary power systems. During municipal grid power failure, peak power limitation 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.

4. Core Purposes

The core purpose of the Yuchai YC4D155-D31 90kW/112.5kVA diesel generator set is to provide high-stability emergency standby power and high-reliability off-grid mobile medium-power power supply for industrial production, key engineering construction and urban public service fields. It effectively solves common power supply risks such as municipal grid instability, sudden power failure and no grid coverage, and guarantees the safe, continuous and efficient operation of medium-power electrical equipment. It is a multi-functional universal power generation equipment integrating industrial standby power and engineering temporary power generation.

Firstly, it undertakes critical emergency power backup tasks for medium-sized industrial enterprises. As a high-performance 112.5kVA 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 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 medium-power off-grid power support for key engineering and remote field scenarios. In municipal infrastructure construction and unpowered remote areas, the unit operates as an independent mobile power generation system, outputting standard 50Hz frequency and stable three-phase voltage. It fully meets the simultaneous power demand of multiple engineering mechanical equipment, solving the long-term power supply bottleneck of off-grid construction and field operation teams.

Thirdly, it balances power performance and long-term operational economy. With calibrated 27.6L/H full-load fuel consumption and Yuchai’s mature turbocharged intercooled energy-saving combustion technology, the unit maintains controllable comprehensive operating costs while delivering stable 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 power generation operation.

Finally, as a classic cost-effective model of Yuchai 4D series generator sets, it fills the market gap of high-reliability 90kW industrial power generation equipment. It perfectly matches the power demand of medium-sized industrial enterprises, engineering construction teams and urban public property management units, and has become one of the most cost-effective and widely recognized medium-power diesel generator sets in the industry.

5. FAQ - Common Frequently Asked Questions

Q1: What is the actual fuel consumption of YC4D155-D31 generator set under different working loads?

A1: The official factory calibrated full-load (100% load) fuel consumption of this Yuchai 112.5kVA diesel generator set is 27.6L/H. In actual on-site operation, fuel consumption changes linearly with the working load. Under 50% light load, the fuel consumption is about 13.5-14.2L/H; under 75% conventional daily working load, the fuel consumption is controlled at 20.5-21.3L/H. Adopting Bosch high-pressure common rail precise fuel injection and turbocharged intercooled combustion technology, fuel burns fully and evenly with a stable fuel consumption curve. There will be no sudden fuel surge during long-term continuous high-load operation, helping industrial and engineering users accurately control daily power generation operating costs.

Q2: What are the core advantages of the brushless self-excited alternator configured on this 90kW generator?

A2: This Yuchai 90kW diesel generator is equipped with industrial-grade brushless self-excited alternator, which has obvious practical advantages over traditional brushed alternators for medium-power working conditions. Firstly, it completely cancels wearable carbon brush components, realizing long-term maintenance-free operation, eliminating regular replacement and routine maintenance costs, and reducing on-site unattended equipment management pressure. Secondly, matched with intelligent AVR automatic voltage regulation technology, the voltage output is ultra-stable with extremely low fluctuation, which can effectively protect industrial precision instruments and mechanical equipment from burnout caused by unstable voltage. Thirdly, with H-grade ultra-high temperature insulation and IP23 dustproof and rainproof protection grade, the alternator adapts to high-temperature, dusty and humid harsh working environments, with strong durability and long service life.

Q3: How is the startup reliability and environmental adaptability of the YC4D155-D31 generator set?

A3: This medium-power Yuchai generator set has excellent startup stability 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 domestic regions. The closed circulating water cooling system ensures efficient and continuous heat dissipation, 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, with strong universal compatibility for industrial production, engineering construction, field operation and public facility scenarios.