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Engine improvement by nanotechnology

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Alberto Borghi

The document shows graphs comparing the friction coefficient and friction force over time and under different conditions for a textured versus an untextured surface. It describes a test of friction versus laps with poor lubrication between the surfaces, as well as tests measuring friction force at different crank speeds and pressures for baseline, low-speed transportation, and super-efficient transportation piston ring segments.

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Engine improvement by nanotechnology
Engine improvement by nanotechnology
Engine improvement by nanotechnology
Engine improvement by nanotechnology
Engine improvement by nanotechnology
0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 FrictionCoefficient 100x10 3 9080706050403020100 Laps FRICTION vs TIME TEST UNTEXTURED TEXTURED "poor" lubrication v = 12 cm/s normal load = 7N nominal contact pressure: 7MPa 1. Oil Reservoir 2. Pipe 3. Angle Cock 4. Accessory Nozzle 5. Transparent Cup 6. Piston Ring Segments 7. Cylinder Liner 8. Heat Source 1000800600 Crank speed [rpm] Pressure 0.9 MPa Baseline LST SET 1000800600 Crank speed [rpm] Pressure 0.6 MPa Baseline LST SET 1000800600 Crank speed [rpm] Pressure 0.3 MPa Baseline LST SET2.0 1.5 1.0 0.5 0.0 FrictionForce[N] 1000800600 Crank speed [rpm] Pressure 0.1 MPa Baseline LST SET

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Engine improvement by nanotechnology

  • 6. 0.80 0.70 0.60 0.50 0.40 0.30 0.20 0.10 0.00 FrictionCoefficient 100x10 3 9080706050403020100 Laps FRICTION vs TIME TEST UNTEXTURED TEXTURED "poor" lubrication v = 12 cm/s normal load = 7N nominal contact pressure: 7MPa 1. Oil Reservoir 2. Pipe 3. Angle Cock 4. Accessory Nozzle 5. Transparent Cup 6. Piston Ring Segments 7. Cylinder Liner 8. Heat Source 1000800600 Crank speed [rpm] Pressure 0.9 MPa Baseline LST SET 1000800600 Crank speed [rpm] Pressure 0.6 MPa Baseline LST SET 1000800600 Crank speed [rpm] Pressure 0.3 MPa Baseline LST SET2.0 1.5 1.0 0.5 0.0 FrictionForce[N] 1000800600 Crank speed [rpm] Pressure 0.1 MPa Baseline LST SET