Values¶

class Values[source]¶

Methods

`clear`
`copy`
`dump`
`from_dict`
`fromkeys`	Create a new dictionary with keys from iterable and values set to value.
`get`	Return the value for key if key is in the dictionary, else default.
`items`
`keys`
`load`
`pop`	If key is not found, d is returned if given, otherwise KeyError is raised
`popitem`	2-tuple; but raise KeyError if D is empty.
`setdefault`	Insert key with a value of default if key is not in the dictionary.
`to_dict`
`update`	If E is present and has a .keys() method, then does: for k in E: D[k] = E[k] If E is present and lacks a .keys() method, then does: for k, v in E: D[k] = v In either case, this is followed by: for k in F: D[k] = F[k]
`values`

__init__()¶: Initialize self. See help(type(self)) for accurate signature.

Attributes

`active_cylinder_ratios`	Possible percentages of active cylinders [-].
`air_temperature`	Air temperature [°C].
`alternator_efficiency`	Alternator efficiency [-].
`angle_slope`	Angle slope [rad].
`atct_family_correction_factor`	Family correction factor for representative regional temperatures [-].
`atmospheric_pressure`	Atmospheric pressure [kPa].
`auxiliaries_power_loss`	Constant power loss due to engine auxiliaries [kW].
`auxiliaries_torque_loss_factors`	Constant torque loss factors due to engine auxiliaries [N/cc, N*m].
`belt_efficiency`	Belt efficiency [-].
`cargo_mass`	Cargo mass [kg].
`change_gear_window_width`	Time window used to apply gear change filters [s].
`co2_params`	CO2 emission model params.
`correct_f0`	A different preconditioning cycle was used for WLTP and NEDC?
`delta_time_engine_starter`	Time elapsed to turn on the engine with electric starter [s].
`downscale_factor_threshold`	Velocity downscale factor threshold [-].
`drive_battery_technology`	Drive battery technology type.
`enable_phases_willans`	Enable the calculation of Willans coefficients for all phases?
`enable_willans`	Enable the calculation of Willans coefficients for the cycle?
`engine_has_cylinder_deactivation`	Does the engine have cylinder deactivation technology?
`engine_has_variable_valve_actuation`	Does the engine feature variable valve actuation? [-].
`engine_is_turbo`	If the engine is equipped with any kind of charging.
`engine_n_cylinders`	Number of engine cylinders [-].
`final_drive_ratio`	Final drive ratio [-].
`fuel_mass`	Fuel mass [kg].
`fuel_saving_at_strategy`	Apply the eco-mode gear shifting?
`gear_box_temperature_references`	Cold and hot gear box reference temperatures [°C].
`has_energy_recuperation`	Does the vehicle have energy recuperation features?
`has_gear_box_thermal_management`	Does the gear box have some additional technology to heat up faster?
`has_lean_burn`	Does the engine have lean burn technology?
`has_periodically_regenerating_systems`	Does the vehicle has periodically regenerating systems? [-].
`has_roof_box`	Has the vehicle a roof box? [-].
`has_selective_catalytic_reduction`	Does the engine have selective catalytic reduction technology?
`has_start_stop`	Does the vehicle have start/stop system?
`idle_engine_speed_std`	Standard deviation of idle engine speed [RPM].
`initial_temperature_NEDC`	Initial temperature of the test cell of NEDC [°C].
`initial_temperature_WLTP`	Initial temperature of the test cell of WLTP [°C].
`is_cycle_hot`	Is an hot cycle?
`is_plugin`	Is the vehicle plugin hybrid?
`is_serial`	Is the vehicle serial hybrid?
`k1`	K1 NEDC parameter (first or second gear) [-].
`k2`	K2 NEDC parameter (first or second gear) [-].
`k5`	K5 NEDC parameter (first or second gear) [-].
`ki_additive`	Default additive correction for vehicles with periodically regenerating systems [CO2g/km].
`max_time_NEDC`	NEDC cycle time [s].
`max_time_WLTP`	WLTP cycle time [s].
`max_velocity_full_load_correction`	Threshold vehicle velocity for gear correction due to full load curve [km/h].
`min_engine_on_speed`	Minimum vehicle engine speed [RPM].
`min_time_engine_on_after_start`	Minimum time of engine on after a start [s].
`n_passengers`	Number of passengers including driver [-].
`n_wheel_drive`	Number of wheel drive [-].
`passenger_mass`	Average passenger mass [kg].
`plateau_acceleration`	Maximum acceleration to be at constant velocity [m/s2].
`rcb_correction`	Apply RCB correction?
`road_state`	Road state (i.e., dry, wet, rainfall, puddles, ice).
`service_battery_start_window_width`	Service battery start window width [s].
`start_stop_activation_time`	Start-stop activation time threshold [s].
`starter_efficiency`	Starter efficiency [-].
`stop_velocity`	Maximum velocity to consider the vehicle stopped [km/h].
`time_cold_hot_transition`	A/T Time at cold hot transition phase [s].
`time_sample_frequency`	Time frequency [1/s].
`tyre_class`	Tyre class (C1, C2, and C3).
`tyre_dynamic_rolling_coefficient`	Empirical value in case of CVT [-].
`tyre_state`	Tyre state (i.e., new or worm).
`use_dt_gear_shifting`	If to use decision tree classifiers to predict gears.
`wltp_base_model`	WLTP base model params.

is_plugin = False¶: Is the vehicle plugin hybrid?

is_serial = False¶: Is the vehicle serial hybrid?

rcb_correction = True¶: Apply RCB correction?

atct_family_correction_factor = 1.0¶: Family correction factor for representative regional temperatures [-].

drive_battery_technology = 'unknown'¶: Drive battery technology type.

belt_efficiency = 0.8¶: Belt efficiency [-].

starter_efficiency = 0.7¶: Starter efficiency [-].

tyre_state = 'new'¶: Tyre state (i.e., new or worm).

road_state = 'dry'¶: Road state (i.e., dry, wet, rainfall, puddles, ice).

engine_n_cylinders = 4¶: Number of engine cylinders [-].

ki_additive = 0¶: Default additive correction for vehicles with periodically regenerating systems [CO2g/km].

n_passengers = 1¶: Number of passengers including driver [-].

passenger_mass = 75¶: Average passenger mass [kg].

cargo_mass = 0¶: Cargo mass [kg].

fuel_mass = 25¶: Fuel mass [kg].

has_selective_catalytic_reduction = False¶: Does the engine have selective catalytic reduction technology?

has_lean_burn = False¶: Does the engine have lean burn technology?

has_gear_box_thermal_management = False¶: Does the gear box have some additional technology to heat up faster?

has_periodically_regenerating_systems = False¶: Does the vehicle has periodically regenerating systems? [-].

active_cylinder_ratios = (1.0,)¶: Possible percentages of active cylinders [-].

engine_has_variable_valve_actuation = False¶: Does the engine feature variable valve actuation? [-].

max_time_NEDC = 1180.0¶: NEDC cycle time [s].

max_time_WLTP = 1800.0¶: WLTP cycle time [s].

stop_velocity = 1.00000011920929¶: Maximum velocity to consider the vehicle stopped [km/h].

plateau_acceleration = 0.10000011920929¶: Maximum acceleration to be at constant velocity [m/s2].

has_start_stop = True¶: Does the vehicle have start/stop system?

engine_has_cylinder_deactivation = False¶: Does the engine have cylinder deactivation technology?

min_engine_on_speed = 10.0¶: Minimum vehicle engine speed [RPM].

min_time_engine_on_after_start = 4.0¶: Minimum time of engine on after a start [s].

change_gear_window_width = 4.0¶: Time window used to apply gear change filters [s].

service_battery_start_window_width = 4.0¶: Service battery start window width [s].

max_velocity_full_load_correction = 100.0¶: Threshold vehicle velocity for gear correction due to full load curve [km/h].

air_temperature = 20¶: Air temperature [°C].

atmospheric_pressure = 101.325¶: Atmospheric pressure [kPa].

has_roof_box = False¶: Has the vehicle a roof box? [-].

tyre_class = 'C1'¶: Tyre class (C1, C2, and C3).

angle_slope = 0.0¶: Angle slope [rad].

correct_f0 = False¶: A different preconditioning cycle was used for WLTP and NEDC?

final_drive_ratio = 1.0¶: Final drive ratio [-].

n_wheel_drive = 2¶: Number of wheel drive [-].

fuel_saving_at_strategy = True¶: Apply the eco-mode gear shifting?

gear_box_temperature_references = (40.0, 80.0)¶: Cold and hot gear box reference temperatures [°C].

auxiliaries_torque_loss_factors = (0.175, 0.2021)¶: Constant torque loss factors due to engine auxiliaries [N/cc, N*m].

auxiliaries_power_loss = 0.0213¶: Constant power loss due to engine auxiliaries [kW].

engine_is_turbo = True¶: If the engine is equipped with any kind of charging.

start_stop_activation_time = 30¶: Start-stop activation time threshold [s].

idle_engine_speed_std = 100.0¶: Standard deviation of idle engine speed [RPM].

is_cycle_hot = False¶: Is an hot cycle?

co2_params = {}¶: CO2 emission model params.

enable_phases_willans = False¶: Enable the calculation of Willans coefficients for all phases?

enable_willans = False¶: Enable the calculation of Willans coefficients for the cycle?

alternator_efficiency = 0.67¶: Alternator efficiency [-].

delta_time_engine_starter = 0.5¶: Time elapsed to turn on the engine with electric starter [s].

use_dt_gear_shifting = False¶: If to use decision tree classifiers to predict gears.

has_energy_recuperation = True¶: Does the vehicle have energy recuperation features?

time_cold_hot_transition = 300.0¶: A/T Time at cold hot transition phase [s].

time_sample_frequency = 1.0¶: Time frequency [1/s].

initial_temperature_NEDC = 25.0¶: Initial temperature of the test cell of NEDC [°C].

initial_temperature_WLTP = 23.0¶: Initial temperature of the test cell of WLTP [°C].

k1 = 1¶: K1 NEDC parameter (first or second gear) [-].

k2 = 2¶: K2 NEDC parameter (first or second gear) [-].

k5 = 2¶: K5 NEDC parameter (first or second gear) [-].

wltp_base_model = {}¶: WLTP base model params.

downscale_factor_threshold = 0.01¶: Velocity downscale factor threshold [-].

tyre_dynamic_rolling_coefficient = 0.9713375796178343¶: Empirical value in case of CVT [-].