I feel a need - Stanford Universityweb.stanford.edu/class/me29si/materials/lecture2_highRes.pdf ·...

ME29SI Lecture 2

Propulsion:I feel a need...

Combustion

Fuel + Air Heat + Water + Carbon Dioxide + Nitrogen

14.7:1 Air:Fuel Ratio for Stoiciometric in Petrol

Imports

• Canada (23.3%)

• Venezuela (10.7%)

• Saudi Arabia (10.4%)

• Mexico (9.2%)

• Nigeria (8.3%)

Oil

Engines

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

Internal Combustion

Suck

Blow Squish

Bang

Ideal Gas Law

pV = nRT

p: Pressure

V: Volume

n: Amount of Gas

R: Universal Gas Constant

T: Temperature

V8 Cylinder Block

Engine Configurations

Piston - Disassembled

Piston - Assembled

Crankshaft

Oil Pan

4 Stroke, SI, Piston Engine

Cylinder Head/Valves

LS9 Exploded

Camshaft Video

Spark Ignition

Used in nearly all gasoline engines

Much improved in last 30 years

Timing important

Distributors-->Coil near/on Plug

Compression Ignition (Diesel)

Rotary (Wankel) Engine

Video

Mazda RX-8