Vehicle Power Meter

Category	Price	Seller	Device
Utilities	$2.99	Satoshi Mori	iPhone, iPad, iPod

Please use it for tuning and condition management of a your car

Features of the application
· Accurate measurement based on physical law
· Support various units
· Easy-to-read digital display
· Broad support from iPhone 4s to iPhoneX
· Measurement results are displayed in table and graph


Measuring method
Actually make the vehicle full throttle and calculate power and torque from GPS location information


Adaptation condition
· Manual gearbox or Automatic gearbox that can lock up
· It is possible to input the vehicle information necessary for the measurement to be described later


Vehicle information necessary for measurement
· Cd (Constant Drag) * Selectable from preset
· Frontal area * Selectable from preset
· Curb Weight (stated in the vehicle specification table)
· Loading weight (weight of driver, passenger and cargo)
· Diameter of drive wheel * Calculated automatically from tire size
· RRC(Rolling resistance coefficient) * Selectable from preset
· Gear ratio of gear used for measurement (measurement with gear closer to 1.0 is recommended)
· Differential Ratio
· Outside temp


Preset value
Select body type
Coupe: Cd value 0.30 Frontal area 2.08 m²
Sedan: Cd value 0.32 Frontal area 2.16 m²
Hatchback: Cd value 0.31 Frontal area 1.96 m²
SUV: Cd value 0.37 Frontal area 2.70 m²
Minivan: Cd value 0.34 Frontal area 3.13 m²
Wagon: Cd value 0.32 Frontal area 2.16 m²
Pickup: Cd value 0.39 Frontal area 2.71 m²
Van: Cd value 0.40 Frontal area 3.17 m²

Select rolling resistance performance
AAA: 6.500
AA: 7.150
A: 8.400
B: 10.500
C: 11.300

Notes
A large error may occur in the measurement result unless the following conditions are satisfied during measurement
· The road surface is flat and there is no gradient
· No strong wind is blowing
· Fix the device (iPhone, iPad) to the vehicle
· Good reception of GPS (not possible inside tunnel)
· Do not shift from the measurement gear (lock up the gear and do not kick down)

Other
· The GPS measurement interval is about 1 second according to the specification of the device. Measurement results become rough in vehicles where acceleration is too fast. In that case, please measure with a higher gear.

* For safety, please do not use this application on public road
* An error may occur in the measurement result depending on various conditions
* The developer assumes no responsibility for any damage caused by using this application