MARHON
The product

GEAC

Kinetic-coupling
wind generator

A compact, modular, shielded assembly that captures the air flow produced by the vehicle's own movement and converts it into electricity for the onboard system and for battery charging.

Designed from scratch for vehicle use — not a conventional wind turbine reduced in scale.

GEAC unit in aluminium, with a shielded upper section and a ventilated lower section
01 / Principle
01
Air in
Capture draws on the relative wind already present during travel.
02
Energy generated
The rotor–generator assembly converts the flow into usable onboard electricity.
03
Air out
Discharge occurs through an enlarged opening, avoiding flow blockage.
04
Low drag
Geometry oriented to minimise the aerodynamic penalty of the installation.

The GEAC's internal geometry, conversion parameters and construction solutions are covered by a patent application and by trade secret. This page describes the operating principle at conceptual level only.

02 / Vehicle integration
Rear of a vehicle with two GEAC units integrated into the bumper

Practically
invisible.

In the reference configuration, two units are installed at the rear of the vehicle. Only the air outlets appear on the bumper; the body of the unit extends below the floor and the shielded upper section occupies a fraction of the boot.

External intake
Only the capture area remains outside, integrated into the bodywork.
Internal outlet
Air passes through the generator and is discharged through a larger opening.
Design preserved
No change to the vehicle's visual identity or functionality.
03 / Dimensions and general data
External diameter (max.)320 mm
Upper section height (shielded)8 to 10 cm
Lower section height (ventilated)24 to 25 cm
Total external height32 to 35 cm
Rotor diameter (inner)240 mm
Rotor diameter (outer)260 mm
Approximate weight6.5 kg
MaterialsAerospace aluminium and
technical polymers
FinishMirror-polished aluminium

Design values for the reference configuration, subject to adjustment in prototype engineering.

Performance target
+50 km
of additional range for every 100 km travelled, in the reference configuration with two units.
An engineering target, not a measured result. MARHON does not anticipate experimental data: real performance and the overall energy balance will be measured on an instrumented prototype under controlled testing.
04 / Development stage

Time to turn
project into performance.

01
Build
Functional physical prototype
CURRENT STAGE
02
Instrument
Data acquisition
03
Test
Controlled trials
04
Validate
Overall energy balance
05
Scale
Industrial integration
Intellectual property
BR 10 2026 020152 9
Patent application filed at the Brazilian INPI on 12 August 2026. The protection strategy includes international extension as development advances.
Technology readiness
TRL 2
Technology concept formulated. Funding of the current round is intended to take the GEAC to an instrumented prototype and experimental validation.
Technical information
Engineering detail is shared only with qualified counterparties, under a confidentiality agreement.
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