FuelType

[kylecarow]

New field within FuelConverter:

pub struct FuelConverter {
    // ...
    #[serde(default)] // default to None for serde backwards compatibilty
    pub fuel_type: Option<FuelType>,
    // ...
}

off the top of my head, some example variants:

pub enum FuelType {
    Gasoline, // E10
    Diesel,
    Hydrogen,
    CNG,
    E85,
    Other {
         lhv: todo!(),
         something_else: todo!(),
     },
}

Could support fuel economy calculation convenience functions.

would be useful for parsing metadata in RouteE
cc @jhoshiko

[kylecarow]

implementing this in f3/vehicle-repo-updates #259

pub struct FuelStorage {
    // ...
    pub fuel_type: Option<FuelType>,
    // ...
}

 pub enum FuelType {
    Gasoline,
    Diesel,
    Hydrogen,
}

optional because:

• the alternative is having it mandatory and default to gasoline - we need to set a default for file format compatibility
• it is just a metadata field that isn't used in actual simulation logic; fuelstorage is a store of energy, agnostic of which fuel
• when we make convenience functions for mpgge calculations we can check that its provided then