I.Core answer
Huaquan’s on-board generator sets are designed to be compact and miniaturized, with significant size differences among units of different power levels. Taking the commonly seen 100-150kW on-board units as an example, the typical size range is as follows:
| power | Unit model | length | width | height | Applicable vehicle models |
| 120kW | Diesel vehicle-mounted generator set | 2.4m | 0.87m | 1.47m | Medium-sized trucks, oilfield special vehicles |
| 150kW | Gas/diesel vehicle | 2.5-2.54m | 1.4-1.44m | 1.6m | Large trucks, construction vehicles |
| 100kW | mobile trailer type | 2.0m | 1.3m | 2.0m | Trailer towing (including rainproof shed) |
Huaquan Power reminds you that on-board generator sets are usually installed on the vehicle chassis. In addition to the dimensions of the generator set itself, it is also necessary to reserve maintenance access (0.6-0.8m), heat dissipation and ventilation space, and control panel operation space. It is recommended to confirm the vehicle chassis dimensions and modification plan with Huaquan technical personnel when selecting the model.
II.Detailed dimensions of on-board generator sets of various power levels
- 120kW vehicle-mounted generator set (the most compact)
This is one of the smallest on-board units from Huaquan Power, specifically designed for space-constrained scenarios such as oil fields and special vehicles.
| parameter | numerical value |
| Unit model | Huaquan 120kW vehicle-mounted Diesel Generator Set |
| Length × Width × Height | 2.4m × 0.87m × 1.47m |
| engine configuration | Volvo 6-cylinder engine, rated power 151kW |
| Technical Features | Electronically controlled high-pressure common rail system, meeting China III emission standards, and shock absorption system design |
| generator | Huaquan copper brushless motor, equipped with digital AVR, auxiliary winding capable of 3 times the rated current for 20 seconds |
| Protective treatment | Three-proofing treatment: anti-mildew, anti-corrosion, anti-salt spray |
| base | One-time bending rigid base with oil tank, featuring ultra-long standby time |
Application scenarios: oilfield drilling, field exploration, and special vehicle modification. This unit is compact overall and customized for installation on vehicles. It boasts compact size and excellent quality and performance.
- 150kW on-board generator set (mainstream model)
150kW is the main power range for on-board units, and both diesel and gas versions have mature solutions.
Universal size for diesel/gasoline:
| parameter | numerical value |
| Unit model | Huaquan 150kW vehicle-mounted generator set |
| Length × Width × Height | 2.5-2.54m × 1.4-1.44m × 1.6m |
| engine configuration | 6-cylinder engine, DT electronic speed regulation |
| Frequency/Voltage | 50Hz / 380V |
| control system | Four protections (low oil pressure, high water temperature, overload, overcurrent) |
| cooling system | Extra-large radiator water tank |
Features of 150kW gas-powered vehicle-mounted unit:
- Adopting a V-type 6-cylinder gas engine
- Hebei Xingtai Automobile Manufacturing Factory has ordered 5 units for use in automobiles
- Open-frame design, facilitating vehicle integration and installation
- 100kW mobile trailer-type generator set (compact type)
This unit is a prime example of miniaturized design, ideal for applications requiring trailer towing.
| parameter | numerical value |
| Unit model | Huaquan 100kW mobile trailer-type generator set |
| Length × Width × Height | 2.0m × 1.3m × 2.0m |
| structural characteristics | The entire machine is compact in structure, setting a paradigm for miniaturization |
| mobility | It can be towed by a motor vehicle and moves at a high speed of 80km/h |
| Applicable scenarios | Construction site, emergency rescue, field work, temporary power supply |
Advantages of Huaquan Power: The 100kW mobile trailer-type generator set adopts a compact design, which allows it to travel at high speeds on the highway without any need to slow down, making it a typical example of a small-sized unit.
- 100kW mobile trailer rainproof shed (including protective structure)
The height of the mobile trailer unit with a rainproof canopy will increase:
| parameter | numerical value |
| Unit model | Huaquan 100kW mobile trailer rainproof shed type |
| Length × Width × Height | 2.5m × 1.5m × 2.3m |
| engine | In-line six-cylinder turbocharged engine with direct fuel injection in the cylinder |
| Fuel tank capacity | 200L large capacity, sufficient for 10 hours of work |
| protection | The rainproof shed, after special treatment, is corrosion-resistant and has a long service life |
III. Overview Table of Vehicle-Mounted Unit Dimensions for Different Power Ranges
| power | type | Length (m) | Width (m) | Height (m) | Installation recommendations | source |
| 120kW | Diesel vehicle | 2.4 | 0.87 | 1.47 | The minimum width requirement for the chassis is ≥0.9m | |
| 150kW | Gasoline/diesel vehicle | 2.5-2.54 | 1.4-1.44 | 1.6 | The chassis width is required to be ≥1.5m | |
| 100kW | mobile trailer type | 2.0 | 1.3 | 2.0 | Including trailer chassis, towable type | |
| 100kW | Trailer + rainproof shed | 2.5 | 1.5 | 2.3 | Including rainproof shed, requiring traction |
IV.Suggestions for on-board installation space planning
- Space required for the unit body
| unit power | Body size (L×W×H) | Minimum bearing area of chassis | Installation method |
| 120kW | 2.4×0.87×1.47m | About 2.1m² | Base bolt fixation |
| 150kW | 2.5×1.4×1.6m | About 3.5m² | Base bolt fixation + vibration reduction |
- Additional space that must be reserved
In addition to the unit itself, the following space must be considered during installation:
| Space type | requirement | explanation |
| maintenance passage | Reserve 0.6-0.8m around the unit | Facilitate daily inspection, filter replacement, and oil/fluid addition |
| Heat dissipation and ventilation | The distance between the radiator and the compartment wall is ≥150mm | Prevent hot air backflow to ensure efficient heat dissipation |
| Control Panel | Reserve 0.5m in front of the panel | Easy to operate and view instruments |
| exhaust pipe | Reserve according to the actual layout | It needs to be vented outside the vehicle to avoid exhaust gas accumulation |
| storage battery | “According to the selection, make reservations.” | Huaquan comes standard with a Camel-30℃ maintenance-free battery |
- Key points of ventilation and heat dissipation design
Huaquan Power’s special reminder: When installing an on-board generator set, ventilation and heat dissipation are two crucial issues that require utmost attention:
- The air intake and exhaust vents should be arranged reasonably to avoid hot air backflow
- The air inlet can be set in the low-temperature area, and the air outlet can be set in the high-temperature area, allowing air convection to form
- The radiator should be placed as close as possible to the air outlet to prevent the circulation of hot air
- If there is no air duct, the distance between the radiator and the air outlet should be controlled within 150 millimeters
- Reference for selection of trailer chassis
For mobile trailer-type units, the requirements for the trailer chassis of Huaquan Power are as follows:
| parameter | requirement |
| Minimum ground clearance | 220mm |
| Trailer form | Dual-axle eight-wheel type, with steering wheel for steering |
| tire | 2-8 pieces (based on load capacity) |
| Bearing surface size | Approximately 1300×4500mm (including the unit + rainproof shed) |
| load-bearing capacity | ≤6 tons |
| Parking brake | Hand brake, reliable braking on a 15° slope |
V.Selection Suggestions
- Select the unit according to the vehicle model
| Vehicle model/space condition | Recommended crew | explanation |
| Medium-sized truck (width ≤ 2.2m) | 120kW vehicle-mounted (0.87m wide) | Compact size, leaving space on both sides of the chassis |
| Large trucks/construction vehicles (width ≥ 2.5m) | 150kW vehicle-mounted (1.4m wide) | Mainstream choice, ample power |
| No fixed vehicle/need to move | 100kW mobile trailer type | Drag and go, flexible deployment |
| It needs to be rainproof outdoors | 100kW trailer + rainproof shed | For all-weather use, with a height of 2.3m |
- Solutions to address insufficient space
If the chassis space of the vehicle is limited, Huaquan Power can provide the following solutions:
- Compact design: For example, a 120kW unit has a width of only 0.87m
- Open-frame structure: Reduce the space occupied by peripheral structures
- Customized modification: Optimize the layout of the unit according to the chassis size
📌 Summary: Quick Reference for Space Requirements of Huaquan On-board Generator Sets
| power | Length × Width × Height | Minimum chassis width requirement | Typical Applications |
| 120kW | 2.4×0.87×1.47m | ≥0.9m | Oilfield special vehicles, medium-sized trucks |
| 150kW | 2.5×1.4×1.6m | ≥1.5m | Large trucks, construction vehicles, and automobile manufacturing plants |
| 100kW mobile trailer | 2.0×1.3×2.0m | traction | Mobile emergency rescue and emergency power supply |
Core advantages of Huaquan Power:
- Compact size: The 120kW unit has a width of only 0.87 meters, making it suitable for vehicular scenarios where space is limited
- Complete power range: mainstream power range of 100-150 kW, with diesel and gas dual fuel options
- Professional design: shock absorption system, three-proofing treatment, oversized radiator, and other specialized configurations for vehicles
- Mobility convenience: The mobile trailer can be towed at a high speed of 80km/h
If you need a customized installation plan for your vehicle model, please contact Huaquan Power’s customer service. Huaquan’s technical staff can conduct an on-site inspection and provide professional installation advice.
