{
    "title": "Maya Motor",
    "inventor_name": "Klaus Keplinger & Friedrich Egger",
    "publication_year": null,
    "device_name": "Maya Motor",
    "goal": "Create a very compact, high-power rotary engine inspired by a Mayan glyph that can operate on combustion, compressed air or steam.",
    "problem_addressed": "Need for a high-power-density, low-vibration engine that can replace conventional piston engines and reduce emissions.",
    "concept_summary": "The Maya Motor uses two mutually penetrating inclined planes of rotation that share a common centre point. The inclined rotary plate and the conical rotor members form variable-volume chambers whose expansion and compression generate torque. The device can be powered by combustion, compressed air or steam.",
    "detailed_description": "The engine consists of a hollow cylindrical housing, a main shaft, a rotary plate inclined to the shaft, and two conical rotor members linked by partition walls. As the rotor-plate assembly rotates, the geometry creates continuously changing chamber volumes that draw in a working fluid, compress it, and release power. The design claims vibration-free operation and a very high power-to-size ratio.",
    "category": "Mechanical Engineering",
    "principles": [
        "Variable-volume chambers",
        "Inclined rotating planes",
        "Rotary combustion",
        "Compressed-air actuation",
        "Steam actuation"
    ],
    "scientific_domains": [
        "Mechanical Engineering",
        "Thermodynamics",
        "Fluid Mechanics"
    ],
    "mechanisms_of_action": [
        "Pressure differentials in rotating chambers produce torque",
        "Expansion and compression of working fluid within variable chambers"
    ],
    "materials": [],
    "energy_sources": [
        "Combustion fuel",
        "Compressed air",
        "Steam"
    ],
    "inputs": [
        "Fuel (e.g., gasoline, diesel, alternative fuels)",
        "Air",
        "Compressed air",
        "Steam"
    ],
    "outputs": [
        "Mechanical power (torque, horsepower)"
    ],
    "claimed_performance": "480 hp from a 40 cm^3 engine at 500 rpm and 10 atm pressure (vs. ~200 hp for a conventional engine of the same size).",
    "experimental_evidence": "The article states that \"self-critical tests by professionals large industrial companies, such as the Tyrolean company Swarovski Optik KG, was held\" and that \"calculations by experts have shown that the developed combustion engine at a size of 40 cubic centimeters and an operating pressure of 10 atmospheres already at 500 rpm with a performance of more than 480 hp emits.\" No quantitative test data are provided.",
    "replication_status": "No independent replication or commercial production reported.",
    "keywords": [
        "Maya engine",
        "rotary engine",
        "combustion",
        "compressed air",
        "steam",
        "high power density",
        "ancient technology"
    ],
    "related_technologies": [
        "Wankel engine",
        "Disc engine",
        "Rotary piston pump"
    ],
    "controversy_level": "high",
    "confidence_score": 0.6,
    "practicability_score": 0.3,
    "fringe_score": 0.8,
    "evidence_strength": 0.2,
    "risk_score": 0.3,
    "trl_estimate": 2,
    "source_urls": [
        "http://www.bibliotecapleyades.net/archivos_pdf/pleiades_sigdell.pdf",
        "http://members.aon.at/spezial/mayasite.htm",
        "http://www.wahrexakten.at/geheimsache-archaeologie-palaeo-seti/878-der-maya-motor.html",
        "http://www.borderlands.de/net_pdf/NET0109S32-34.pdf"
    ],
    "organizations": [
        "Swarovski Optik KG",
        "Tyrolean company (unspecified)"
    ],
    "applications": [
        "Vehicle propulsion",
        "Portable power generation",
        "Hydraulic or pneumatic pumps"
    ],
    "limitations": [
        "No peer-reviewed data or independent testing",
        "Claims of performance far exceeding conventional engines",
        "Potential sealing and wear issues in rotating chambers"
    ],
    "open_questions": [
        "Can the claimed 480 hp from 40 cm^3 be reliably reproduced?",
        "What range of fuels can be used safely?",
        "How does the design address sealing, lubrication and thermal management?"
    ],
    "red_flags": [
        "Unsubstantiated performance claims",
        "Alleged suppression by multinational lobbies without evidence",
        "Lack of detailed technical specifications or test results"
    ],
    "evidence_quotes": [
        "The extraordinary apparatus works on the principle of two mutually penetrating inclined planes of rotation.",
        "The developed combustion engine at a size of 40 cubic centimeters and an operating pressure of 10 atmospheres already at 500 rpm with a performance of more than 480 hp emits.",
        "Self-critical tests by professionals large industrial companies, such as the Tyrolean company Swarovski Optik KG, was held."
    ]
}