Class

UnitFuelEfficiency

A unit of measure for fuel efficiency.

Declaration

class UnitFuelEfficiency : Dimension

Overview

You typically use instances of NSUnitFuelEfficiency to represent specific quantities of fuel efficiency using the NSMeasurement class.

Fuel Efficiency

Fuel efficiency corresponds to the thermal efficiency of a process that converts the chemical potential energy of a fuel into kinetic energy. Fuel efficiency can be expressed by SI derived units in terms of cubic meters per meter (m3/m), but is more commonly expressed in terms of liters per kilometer (L/km) and miles per gallon (mpg).

The NSUnitFuelEfficiency class defines its base unit as litersPer100Kilometers, and provides the following units:

Name

Method

Symbol

Liters Per 100 Kilometers

litersPer100Kilometers

L/100km

Miles Per Gallon

milesPerGallon

mpg

Miles Per Imperial Gallon

milesPerImperialGallon

mpg

Topics

Accessing Predefined Units

class var milesPerImperialGallon: UnitFuelEfficiency

Returns the miles per imperial gallon unit of fuel efficiency.

class var litersPer100Kilometers: UnitFuelEfficiency

Returns the liter per 100 kilometers unit of fuel efficiency.

class var milesPerGallon: UnitFuelEfficiency

Returns the miles per gallon unit of fuel efficiency.

Relationships

Inherits From