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ME29SI Lecture 2 Propulsion: I feel a need...

I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

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Page 1: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

ME29SI Lecture 2

Propulsion:I feel a need...

Page 2: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Combustion

Fuel + Air Heat + Water + Carbon Dioxide + Nitrogen

14.7:1 Air:Fuel Ratio for Stoiciometric in Petrol

Page 3: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves
Page 4: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Imports

• Canada (23.3%)

• Venezuela (10.7%)

• Saudi Arabia (10.4%)

• Mexico (9.2%)

• Nigeria (8.3%)

Page 5: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Oil

Page 6: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Engines

Page 7: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Chevrolet Corvette ZR1

Powered by 6.2L Supercharged V8 (LS9)

638 hp at 6500 RPM

604 ft-lb at 3800 RPM

9.9:1 Compression

3.3 0-60 mph

205 mph+ top speed

$111,100

Page 8: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves
Page 9: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Internal Combustion

Suck

Blow Squish

Bang

Page 10: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Ideal Gas Law

pV = nRT

p: Pressure

V: Volume

n: Amount of Gas

R: Universal Gas Constant

T: Temperature

Page 11: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

V8 Cylinder Block

Page 12: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Engine Configurations

Page 13: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Piston - Disassembled

Page 14: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Piston - Assembled

Page 15: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Crankshaft

Page 16: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Oil Pan

Page 17: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

4 Stroke, SI, Piston Engine

Page 18: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Cylinder Head/Valves

LS9 Exploded

Page 19: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves
Page 21: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Spark Ignition

Used in nearly all gasoline engines

Much improved in last 30 years

Timing important

Distributors-->Coil near/on Plug

Page 22: I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf · 3.3 0-60 mph 205 mph+ top ... 4 Stroke, SI, Piston Engine. Cylinder Head/Valves

Compression Ignition (Diesel)