Simply splitting the piston crown from the skirt (Fig. 1) to pump gases for the combustion chamber via a (valvetrain-like) “piston-train” and then combining to turn the crank” makes a 2-/4-cycle hybrid, called “D-Cycle” (Differential-Stroke-Cycle) engine. D-Cycle further ushers in the (diesel-engine-type) compression ignition of the (gasoline-engine-type) air/fuel mixture combustion, for a diesel-/gasoline-engine hybrid, called “Diesoline” engine – or “SCCI” (Stoichiometrically-Charged-Compression-Ignition) engines.
The (mechanical or electronic) piston-train is like an enlarged valvetrain Which controls the piston strokes and adjusts the gas exchange to optimize the Burnt-Gas-Retention (BGR) to retard ignition timing and slowdown combustion rate. These engine retrofits surpass the current 2-cycle, 4-cycle, diesel, or gasoline ICEs (internal combustion engines), while maintaining compatibility with existing parts, manufacturing, facilities, personnel and processes.
These patented technologies can retrofit the existing (and future) billions of ICEs to improve (>30%) efficiency, (>2.5x) torque & eliminate (~zero) harmful diesel soot/NOx emissions and can applying acuminated know-how and facilities for great savings from developments.
ICEs have been worked on by millions of personnel for about 1.5 centuries and encompass the whole spectrum of human activities. With just a minor modification of the piston, they+ can bring in another century of service to humanity and may be even longer - before electric battery technology achieves compatible energy and power densities.
Our piston-train retrofit technologies for the billions of cars, buses, pickups, and any devices powered by existing and future ICEs should provide great opportunities for D-cycle and Diesoline engine improvement businesses.
The D-cycle generates greater power (torque), it can be for just about any gasoline or diesel ICE powered equipment. It can greatly enhance power, energy densities and fuel efficiency without much change on the engine (and mostly inside the existing engine structure). This can be already a great business opportunity – and future new cars need only up to 4 cylinders, not v8, while new heavy trucks up to 4 cylinders not 6!
Diesoline can retrofit gasoline engines by retaining >30% BGR via stopping the exhaust stroke far below the TDC to have diesel-like compression ignition to further fuel efficiency (~15%).
Diesoline can also retrofit diesel engines in 2 ways. A simpler way is to heat (evaporate) the existing in-cylinder injection during the intake stroke to mix with incoming air and BGR from previous stroke (power transition), which replacing the costly high-pressure injection system. The better way is to add a gasoline-type stoichiometrically fuel-air mixture port-injection like a gasoline engine, and with high BGR to retard and slow down the combustion (called Low-Temperature-Combustion). This way the fuel-air can be better mixed for more complete combustion (producing no soot or NOx in theory & tests) - saving diesel industry $Bs yearly in after-treatments besides fuel.
We have worked on lawnmowers, scooters, military and Ford engines with expected results. We are re-starting the ICE hybrids after the pandemic and eV hype. We will offer to share the retrofit cost with performance improvements and fuel savings to benefit humanity “for another hybrid ICE century!”.
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About the Entrant
- Name:Miin Yan
- Type of entry:individual
- Software used for this entry:Yes