Fuel flexibility
Operation demonstrated with gasoline, diesel, kerosene, Jet-A, JP-8 and Coleman fuel, without hardware modifications.
Compact power · In development
miniGEN
Compact portable
on-demand power.
A family of fuel-flexible generators for small power demands. Designed for field electronics, remote sensors and small unmanned systems where grid access and sunlight are unreliable.
50–300 W
Net electrical output
5–30 cc
Engine displacement
22–32%
Fuel-to-electric efficiency
Modeled portfolio targets
Preliminary engineering values. Configurations are under development.
Development foundation
Built and tested.
Advancing toward application.
The platform couples a reciprocating piston engine to an alternator. Lean combustion and specialized carburetion support efficient small-scale operation and heavy fuels without miniature fuel-injection hardware.
Modeled performance · 8 cc engine
Modeled values, not measured ratings. Ignition timing is normalized.
Integrated prototype testing
Net electrical output, fuel consumption and fuel-to-electric efficiency have been measured, with results compared against model predictions.
Single-unit control
Voltage and power control, including load following, have been demonstrated.
Parallel operation
Operation of multiple units in parallel is under active development.
Preliminary specifications
One family. A range of power needs.
Modeled maximum net electrical output for the miniGEN family. Custom configurations can be discussed for other application requirements.
| Model | Displacement | Net electrical power target |
|---|---|---|
| miniGEN-5 | 5 cc | 80 W |
| miniGEN-8 | 8 cc | 120 W |
| miniGEN-12 | 12 cc | 170 W |
| miniGEN-20 | 19 cc | 220 W |
| miniGEN-30 | 27 cc | 290 W |
These values are engineering targets derived from proprietary modeling, not measured ratings or guaranteed production specifications. Values are subject to change as development and testing continue.
Proposed application
Power for marine
persistence.
A potential onboard charging source for marine platforms, supporting battery recharge between submerged missions.
Recharge near the surface
Concept: operate miniGEN with an intake and exhaust above water to recharge onboard batteries.
Return to submerged operation
Stored electrical energy supports the next submerged mission segment.
Proposed integration. Marine packaging and vehicle-level performance require development and validation.
Discuss your marine applicationPrototype development
Hardware through testing.
Engine configurations, integrated hardware and bench testing from the development program.
Compact engine prototype
Finned cylinder and exposed mechanical assembly.
Experimental Flexible Fuel Storage and Delivery System
Experimental evaporation chamber for flexible fuel storage and delivery.
Engine and alternator prototype
A larger integrated assembly built and tested during development.
Instrumented bench setup
Engine, fuel supply and instrumentation arranged for bench testing.
Startup and testing
Hands-on startup and operation of a compact prototype.
Retouched development imagery. Images illustrate hardware and testing arrangements; instrument displays are not presented as measurement records.
Discuss your application
What does your system need to power?
Share your continuous and peak power needs, preferred fuel, size and weight limits, operating environment and deployment timeline. We can discuss configuration options and development status.
Contact Hidden Gradientinfo@hiddengradient.co