(See "Weather" for more information on how this is used. Sample timezones: Los Angeles=PST/PDT; Denver=MST/MDT; Chicago=CST/CDT; NYC=EST/EDT)
Initial charge: %
(How charged your vehicle is, as a percentage of the amount of the pack that is capable of being used.)
Payload weight: lbs
(Combined weight of passengers and cargo)
Road quality:
(Smooth cement = 1.0; concrete with lumpy aggregate = 1.08; bad offroad conditions = 2.0.)
Target city speed relative to speed limit:
(1.0 means "never exceed the speed limit except for passing or whatnot". 1.05 means "5% more than the speed limit", 0.95 means "95% of the speed limit", and so forth.)
Target highway speed relative to speed limit:
(Same as above)
Desired speed: mph
(Likewise, speed will exceed this for passing and such.)
(The current pressure of the front tires. Be sure to account for both leakage and a change in temperature since inflation! For every nine degrees Fahrenheit temperature rise, add 2% pressure)
Rear tire inflation pressure: psi
(The current pressure of the rear tires. Be sure to account for both leakage and a change in temperature since inflation! For every nine degrees Fahrenheit temperature rise, add 2% pressure)
Fudge factor:
(How much to optimistically/pessimistically adjust the power the drivetrain consumes. 1.0 = normal; 0.5 = half as much as it should (extremely optimistic); 2.0 = twice as much as it should (extremely pessimistic).)
Climate control target: °F
(Your optimum interior temperature)
Climate control leeway: °F
(How much of a temperature difference from your target you're willing to tolerate. Set to a large number if you want to deactivate climate control altogether)
Windshield wiper speed: %
(What percentage of your wiper's maximum power setting they're running at; use "0" for off.)
Headlights:
Off
Low beams
High beams
(Headlights will be turned on and off automatically if you use real-world weather; see the "Weather" section.)
Stereo:
Off
Quiet
Loud
Interior lights:
Other:
W
(Don't include always-on energy losses such as running lights or in-car computer systems.)
Use real-world weather data:
(If you select this, temperature, pressure, wind speed and direction, and other factors will be automatically determined. If the trip is within the next 8 days, actual weather forecast data is used. If not, historical data from "typical" months is used. If you want a "second opinion" on your trip, so to speak, run it a week later or earlier to get slightly different weather conditions.)
Outdoor temperature: °F
(Affects battery capacity, rolling resistance, and climate control. Will not vary with altitude. This value will not be used if you use real-world weather data.)
Initial pressure: mb
(Affects aerodynamic drag. Set it to the air pressure where you start; it'll vary with altitude beyond that. This value will not be used if you use real-world weather data.)
Solar illumination: W/m^2
(Affects solar power. 1000W/m^2 is a perfectly clear summer day with the sun straight overhead. This value will not be used if you use real-world weather data.)
Wind speed: mph
(Affects aerodynamic drag. Headwinds waste energy, tailwinds save energy, and crosswinds slightly raise your drag coefficient. This value will not be used if you use real-world weather data.)
Wind direction: °
(Affects aerodynamic drag. See above. 0 means a north wind (wind comes from the north). This value will not be used if you use real-world weather data.)
Heat (-75°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 75°F colder outside than inside.)
Heat (-50°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 50°F colder outside than inside.)
Heat (-25°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 25°F colder outside than inside.)
AC (15°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 15°F warmer outside than inside.)
AC (30°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 30°F warmer outside than inside.)
AC (45°F): W
(The amount of power needed to sustain (not attain) the temperature when it's 45°F warmer outside than inside.)
Wipers (full power): W
(Windshield wipers running continuously at maximum speed)
Low beams: W
(Normal headlights)
High beams: W
(Extra-intense headlights)
Stereo (quiet): W
(Self-explanatory)
Stereo (loud): W
(Self-explanatory)
Interior lights: W
(Self-explanatory)
Solar panel rating: W
(How many watts the vehicle's solar panel (if present) is rated for. If the panel is curved or angled, lower the official rating a bit. If you have no solar panel, enter '0'.)
Vehicle weight: lbs
(The weight of the vehicle without any payload)
Drag area:
(The vehicle's drag coefficient times its cross-sectional area, also known as "CdA". The "A" in this context must be in square meters.)
Crosswind drag penalty:
(For every meter per second of crosswinds, we add this much to the drag area (in square meters))
Wiper drag penalty: %
(What percent having wipers on full will increase your drag area (such as "30" for a "30%"))
Min operating voltage: V
(The vehicle dies if the voltage drops below this point)
Max operating voltage: V
(The vehicle is not allowed to charge beyond this voltage)
Max regulated speed: mph
(The controller will try to prevent the vehicle from going faster than this)
Front tire rolling coefficient:
(The rolling resistance coefficient (RRC) for each of the vehicle's front tires)
Rear tire rolling coefficient:
(The rolling resistance coefficient (RRC) for each of the vehicle's rear tires)
Target front tire pressure: psi
(What the manufacturer recommends inflating the front tires to)
Target rear tire pressure: psi
(What the manufacturer recommends inflating the rear tires to)
Front tire load rating: lbs
(How much weight the front tires are individually rated for)
Rear tire load rating: lbs
(How much weight the rear tires are individually rated for)
Number of front wheels:
(How many front wheels the car has)
Number of rear wheels:
(How many rear wheels the car has)
Max pack current: A
(Vehicle is prevented from pulling more than this many amps from the pack)
Parasitic losses: W
(Any loads that are present nonstop while the vehicle is in operation, such as in-car computer systems, sensors, etc.)
Front tire coefficient of static friction:
(The coefficient of static friction between the front tire(s) and dry concrete.)
Rear tire coefficient of static friction:
(The coefficient of static friction between the rear tire(s) and dry concrete.)
Percent of weight at front (acceleration skid): %
(How much of the vehicle's weight is on the front wheel(s) when the (loaded) vehicle is decelerating so fast that it has just begun to skid)
Percent of weight at front (resting): %
(How much of the vehicle's weight is on the front wheel(s) when the (loaded) vehicle is resting on flat ground)
Percent of weight at front (deceleration skid): %
(How much of the vehicle's weight is on the front wheel(s) when the (loaded) vehicle is accelerating so fast that it has just begun to skid)
Front wheels driven? Rear wheels driven?
The simulator needs to know how much current the
drivetrain (inverter + motor) is going to try to pull
under various conditions (combinations of torque,
voltage, and RPM). Fill out as many "torque,RPM,voltage,efficiency" entries as you can. The
simulator will interpolate between whatever points you enter to try
to figure out how many amps the drivetrain will need to pull under the
current conditions. Use negative torques and currents to indicate regen. Watch your units; torque
is in newton-meters, not foot pounds. You should have no fewer than 20
or so entries; for optimal simulation, try to have
about 100 covering all possible conditions in detail. Group your
voltages in layers -- i.e., have a number of
entries for 100V, 125V, 150V, etc rather than 100,
101V, 102V, 103V, 104V, etc. Be sure to include negative
torques for motor speeds greater than any hardware speed limitation
in case the vehicle is rolling down a hill.
A simple efficiency stat can't fully describe the current the motor pulls under
various conditions. For example, a motor at 0 RPM but high torque may still be
pulling a relevant amount of power. This allows you to account for those
power draws. Fill them out like above, in the form torque,rpm,voltage,power
Fill out as many "speed,RPM" entries as you see fit. Speeds are in miles
per hour. Fill them out in order. This is designed to (roughly) let
vehicles with a transmission be simulated. Wherever there would (roughly)
be a shifting of gears, place your points close together, such as
"49.999999,4000" and "50.0,2000". If your vehicle only has a fixed drive
ratio, you only need two entries: "0,0" and the RPM at any other speed (the
rest will be interpolated).
A portion of the energy a vehicle is wasted to the
gearbox, bearings, etc. The amount wasted depends
on the current operating conditions. Fill out
"rpm,vehicle-torque,drag-torque" entries covering the whole range of possible drivetrain
conditions. Both torque and drag-torque are in
newton-meters. Be sure to include negative torques.
Drag should always be positive.
The voltage a battery pack provides varies with
temperature and with how much charge is left. Fill out as many "temperature,kwh remaining,voltage" entries as you can.
temperatures are in Fahrenheit. Remaining kwh is amount remaining in the
pack, not the amount that the vehicle can actually use
(that is limited by the cutoff voltage). The simulator will interpolate between your datapoints.
Some battery chemistries, such as lead-acid, suffer
a significant drop in efficiency with increasing
current, causing you to get less range out of a pack
when you use it quickly. Fill out as many "amps,efficiency" entries
for the battery pack as you can. Efficiencies are in percentage form
(0-100) -- for example, "86.0,93.0" means at 86 amps, it's 93%
efficient. Be sure to include efficiencies for negative
amps (storage efficiency). Order your entries by amps. The simulator will
interpolate between your datapoints.