Auxiliary Power Unit – A141F
A141F / ONBOARD AUXILIARY POWER Auxiliary Power Unit – A141F
The Auxiliary Power Unit – A141F is an integrated onboard power system developed to maintain selected military vehicle systems when the main engine is switched off or unavailable. It supports electrical, pneumatic and hydraulic subsystems, silent-mode operation, onboard climate control and mission-critical equipment across demanding military environments.
Compact auxiliary power platform for main-engine-off operation, onboard mission systems, silent-mode requirements and integrated vehicle support.
Independent Auxiliary Power for Modern Military Platforms
The Auxiliary Power Unit – A141F supplies critical vehicle systems without requiring continuous operation of the main engine. It supports onboard electronics, pneumatic and hydraulic systems, climate control and other mission equipment during stationary operation, pre-mission preparation or conditions in which the main engine is unavailable.
The supplied technical table specifies 28 VDC output, 4.5 kVA continuous power, 5.3 kVA rated power output and a maximum current of 160 A.
Integration Across Tracked, Wheeled and Specialized Platforms
The A141F is intended for integration into tracked and wheeled armored vehicles as well as stationary systems and airborne applications. The supplied platform examples include main battle tanks, self-propelled artillery, armored and infantry fighting vehicles, armored personnel carriers, MRAPs, tactical and support vehicles, rocket systems, shelters, tents, helicopters and aircraft.
Depending on platform layout, acoustic requirements and thermal-management needs, the unit can be installed inside an insulated compartment or mounted externally on the vehicle structure.
Power5.3
kVA
Power Architecture for Increasing Onboard Electrical Demand
The A141F supports main-engine-off operation as onboard electronic loads increase. The broader system architecture described in the supplied information can be configured across a 2 kW to 20 kW power range and can support 24/28 VDC as well as higher AC and DC voltages depending on application requirements.
The A141F draws fuel directly from the vehicle fuel tank and initial electrical power from the vehicle battery, eliminating the need for a separate APU fuel tank or dedicated battery. Air-cooled or liquid-cooled diesel-engine architectures can be selected according to the application; the supplied A141F technical table specifically lists Liquid Cooled.
A141F Auxiliary Power Features
Main-Engine-Off Support
The A141F can power selected onboard systems without continuous operation of the vehicle's main engine.
Silent-Mode Operation
Independent auxiliary power supports reduced acoustic and thermal signatures during stationary operations.
Co-Generation Mode
The APU can monitor power demand and compensate for shortages while operating alongside the vehicle's main generator.
Vehicle-Fed Fuel Supply
The system draws fuel from the vehicle fuel tank rather than requiring a separate dedicated tank.
Automatic & Manual Start
The control system supports automatic and manual starting for different operating requirements.
Compact Integration
The compact structure supports installation in constrained military vehicle layouts.
Power, Cooling and Control Configuration
Electrical Output
- Output Voltage
- 28 VDC.
- Continuous Power
- 4.5 kVA.
- Rated Power Output
- 5.3 kVA.
Vehicle Integration
- Fuel Source
- Vehicle fuel tank.
- Initial Electrical Power
- Vehicle battery.
- Cooling
- Liquid Cooled according to the A141F technical table.
Control & Monitoring
- Electronic Control Unit
- IP67-rated ECU with digital display.
- Start Modes
- Automatic and manual.
- Displayed Data
- Temperature, fuel level, pressure, DC current, battery voltage and system status.
Operational Applications
Mission-System Support with Co-Generation Capability
The A141F supports onboard electronics, hydraulic and pneumatic systems, climate-control equipment, weapon systems, communication equipment and other mission-critical subsystems independently of continuous main-engine operation.
In co-generation mode, the APU operates alongside the vehicle's main generator, monitors electrical demand and supplies additional power when required. The system may also be integrated with life-support solutions including HVAC and KBRN protection systems.
Environmental, EMC, Electrical and Reliability References
The supplied product information states that the A141F is tested in accordance with the following military standards for electromagnetic compatibility, environmental conditions, electrical power and reliability considerations.
Frequently Asked Questions
01What continuous and rated power values are specified for the A141F?
The technical table specifies 4.5 kVA continuous power and 5.3 kVA rated power output.
02What maximum current is listed for the A141F?
The supplied specification lists a maximum current of 160 A.
03What cooling system is specified in the A141F technical table?
The A141F technical table specifies an integrated Liquid Cooled system.
04What noise level and system weight are listed?
The technical data lists 85 dB @ 7 m and a system weight of 53 kg ±20%.
05What dimensions are specified for the A141F?
The supplied dimensions are 530 mm × 564 mm × 660 mm ±5%.
Technical Data
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Contact our team for A141F vehicle integration, auxiliary power, cooling and mission-system requirements.