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| | [[Category:Powertrain]] | | [[Category:Powertrain]] |
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| − | The goal of the powertrain is to move the car forward. In an internal combustion engine, this is accomplished by converting chemical energy stored in a combustible fuel source into mechanical energy. An internal combustion engine burns the fuel to create rotational energy. This is transmitted to the ground through the drivetrain. Should this be a system level analysis?
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| − | [note: should create page for each subsystem so this page doesn't end up 10 miles long]
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| − | Components:
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| − | * Intake own page created
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| − | ** supercharging/turbocharging
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| − | * Engine - own page created<br />
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| − | * Engine Control - put under engine or leave separate?<br />
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| − | ** Theory - spark, fuel control<br />
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| − | *** passive v active (wasted spark and carbs v PFI/DFI and spark control)
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| − | ** Tuning
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| − | *** alpha-n
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| − | *** common ecus
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| − | ** Custom cams
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| − | * Fuel - own page created<br />
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| − | ** Basic stoich, LBT, lambda, octane and other jargon
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| − | ** Charge mixing [put this here or in intake??]
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| − | ** fuels avaiable at comp
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| − | ** fuel strategies
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| − | ** efficiency discussion here?
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| − | *** consumption v thermal efficiency, BSFC<br />
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| − | * Cooling - own page created
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| − | ** radiator designs/form factors
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| − | ** radiator placements
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| − | ** other cooling applications: oil or intercooler
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| − | * Exhaust - own page created
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| − | * Drivetrain - own page created
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| − | ** Gearing
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| − | ** transmission (chain/sprocket, gear, or direct drive)
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| − | ** differentials
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| − | ** tires?
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| − | other powertrain stuff:
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| − | * traction control
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| − | * vibration
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| − | * engine as a stressed structural component
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| − | * health and safety
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| − | * testing
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| − | ** dynomometer
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| − | ** DIL
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| − | * Simulation
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| − | * History/trends in the competition
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| − | =Engine=
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| − | {{Main|Engine}}
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| − | The engine is the center of the internal combustion powertrain system. All other components of the greater system exist to service the engine in different ways. This means the engine is sensitive to design changes made across the entire powertrain. As of 2019, the FSAE rules require an internal combustion engine with a displacement of 710cc or less. Available OEM motors within this displacement limit are largely sourced from motorcycles and snowmobiles.
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| − | =Intake=
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| − | {{Main|Intake}}
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| − | The intake system has a dominant effect on the torque curve and behavior of the powertrain system. All air used by the engine(s) for combustion must pass through a 25mm opening, commonly referred to as a 'restrictor'. For naturally aspirated engines, this restriction limits the maximum power output from the engine to about 100 hp.
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| − | =Exhaust=
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| − | {{Main|Exhaust}}
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| − | The use of a combustion powerThe competition rules limit sound output of the engine.
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| − | =Fuel=
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| − | {{Main|Fuel}}
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| − | The fuels available at US competitions are gasoline of octane ratings 93 and 100, and E85.
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