The Future of Performance Is Two-Stroke
DUETEC is an advanced software defined two-stroke engine platform rated at 500+hp/L, 10+hp/kg, and up to 60% thermal efficiency under certain operating conditions. It is the ultimate fusion of select lab-proven technologies, unlocking new downsizing potentials.
V4 is the new V8
Building on a “boostable” two-stroke architecture, DUETEC matches the firing frequency and output capability of turbo- or supercharged four-stroke engines twice the displacement and cylinder count. Or in practical terms: a DUETEC V4 replaces a conventional turbo flatplane V8, delivering a comparable dynamic and acoustic signature at a fraction of the mass and mechanical complexity.
The DUETEC V4 K1 shown below is an integrated hybrid unit displacing 1440 cc, revving to 11,000rpm, and producing a conservative 750hp from combustion. Total hybrid system output exceeds 1100hp and 1000Nm at under 100 kg combined system mass.
“Boostable” Two-Stroke Architecture
DUETEC relieves the piston of pumping duty, assigning it primarily to mechanical energy extraction. Gas throughput is managed by adaptively balancing intake mass airflow against blowdown using an electrically assisted turbocharger on the intake side and an electrically driven and electronically phased rotary exhaust valve (EMREV) on the outlet. This setup enables full digital command over pressure cycles, charge dilution, and effective compression ratio with minimal mechanical effort.
With every downstroke being a power stroke, potential output density is doubled. The elimination of a conventional valvetrain and mechanically intruding poppet valves preserves optimal combustion-chamber geometry, enabling advanced, porous media based mixture preparation and combustion strategies for faster, cleaner, and more reliable burning of even ultra-lean mixtures…
Porous Media Combustion
A Quantum Leap in Combustion and Emissions Control
DUETEC is engineered around a ceramic thermodynamic core featuring Porous Media Combustion (PMC) at its center.
PMC technology enables homogeneous in-cylinder mixture formation within the temporal constraints of two-stroke operation and the controlled volumetric combustion of mixtures with near-instantaneous pressure rise rates, closely approaching the ideal Otto-cycle.
(background picture shows in-cylinder view from the piston’s perspective showing the porous media insert in the cylinder head)
Ceramic Thermodynamic Core
DUETEC pushes ceramic engine technology to the forefront — matching the disruptive impact carbon-ceramic brakes had on stopping performance.
DUETEC was specifically designed with ceramics in mind, leveraging the inherent simplicity of the two-stroke platform to fully exploit the superior thermal and tribological properties of advanced technical ceramics, making their use both technically and economically viable.
As the primary structural material of the combustion core, ceramics ensure DUETEC’s reliable operation under high boost and cycle frequencies, eliminate oil-induced charge contamination, and maintain dimensional stability under extreme thermal and mechanical stress.
Follow Our Video Series
for a deep dive into DUETEC’s design