Auxiliary Power Unit – A22K
A22K / HIGH-LOAD AUXILIARY POWER Auxiliary Power Unit – A22K
The Auxiliary Power Unit – A22K is an onboard auxiliary power system developed to maintain mission-critical armored vehicle systems when the main engine is switched off or unavailable. Designed for demanding electrical loads and advanced mission equipment, it supports electrical, pneumatic and hydraulic subsystems, onboard climate control and sustained operational readiness.
High-load auxiliary power platform for main-engine-off operation, co-generation, silent-mode support and advanced onboard mission equipment.
Auxiliary Power for High-Demand Vehicle Systems
The Auxiliary Power Unit – A22K provides electrical, pneumatic and hydraulic power to selected vehicle subsystems without requiring continuous operation of the main engine. It supports pre-mission weapon and system testing, onboard diagnostics and main-engine cooling while helping essential equipment remain operational when the primary engine is damaged or unavailable.
The system can also sustain onboard power in deployment areas where fixed external power sources are unavailable.
Flexible Integration Across Military Platform Architectures
The A22K is intended for tracked and wheeled armored vehicles, tactical and support vehicles, stationary systems and selected airborne applications. Supplied platform examples include main battle tanks, self-propelled artillery systems, armored and infantry fighting vehicles, armored personnel carriers, MRAP vehicles, rocket systems, shelters, tents, helicopters and aircraft.
Depending on platform layout, thermal requirements and acoustic-management needs, the system can be installed internally within a sound-insulated compartment or mounted externally on the vehicle structure.
Power20,3
kVA
Power Architecture for Dense Electronic Mission Loads
The broader APU architecture described in the supplied information supports configurations from 2 kW to 20 kW and provides 24/28 VDC as well as higher AC and DC voltage options. The A22K technical table specifically lists 20,3 kVA continuous power and 20 kVA output power.
The system is integrated with vehicle fuel and control architecture and draws fuel directly from the vehicle fuel tank, eliminating the need for a separate fuel tank or battery. Depending on operational requirements, air-cooled or liquid-cooled diesel architectures may be configured; the A22K technical table specifically lists Water Cooled.
A22K Auxiliary Power Features
Main-Engine-Off Power
The A22K supports mission equipment without requiring the vehicle's main engine to remain continuously operational.
High-Load System Support
The architecture is intended to support vehicles carrying power-intensive electronic and mission equipment.
Co-Generation Capability
The APU can operate alongside the main generator and supplement available power when onboard demand increases.
Vehicle Fuel Integration
The system draws fuel directly from the vehicle fuel tank without requiring a separate APU fuel reservoir.
Automatic & Manual Start
The control interface supports automatic and manual start options for different mission profiles.
Real-Time Monitoring
The digital control interface displays key operating parameters and system fault information.
Electrical, Cooling and Control Configuration
Electrical Output
- Output Voltage
- 28 VDC.
- Continuous Power
- 20,3 kVA.
- Output Power
- 20 kVA.
Vehicle Integration
- Fuel Source
- Vehicle fuel tank.
- Dedicated Tank / Battery
- Not required according to the supplied product information.
- Cooling
- Water Cooled according to the A22K 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 fault information.
Operational Applications
Independent Support for Power-Intensive Mission Equipment
The A22K can supply onboard electronics, hydraulic and pneumatic systems, climate-control units, weapon systems, communication equipment, fire suppression systems, power distribution units and KBRN systems independently of continuous main-engine operation.
In co-generation mode, the APU operates alongside the vehicle's primary generator, monitors electrical demand and supplements available power when newly integrated mission equipment creates additional load requirements.
Environmental, EMC, Electrical and Reliability References
The supplied product information states that the A22K is designed and tested in accordance with the following military standards for electromagnetic compatibility, environmental performance, electrical power and reliability considerations.
Frequently Asked Questions
01What continuous and output power values are specified for the A22K?
The technical table specifies 20,3 kVA continuous power and 20 kVA output power.
02What maximum current is listed for the A22K?
The supplied technical data lists a maximum current of 330 A.
03What operating and storage temperature ranges are specified?
The operating range is -32°C ~ +55°C, while the storage range is -40°C ~ +60°C.
04What noise level and maximum operating elevation are listed?
The technical table specifies 85 dB @ 7m and a maximum operating elevation of 3000 m.
05What system weight, fuel consumption and dimensions are specified?
The supplied data lists 450 kg ±20, 8 L/H and dimensions of 1168mm × 1595mm × 860mm ±5.
Technical Data
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Contact our team for A22K vehicle integration, high-load auxiliary power, cooling and mission-system requirements.