T-1A1c-TE-4 - Improved bus engine technology
Background¶
IPCC WG3 definition: .
TBD
Sustainability Category: Amber¶
This transition element has only moderate climate impact but may be necessary for maintaining urban needs, with a clear pathway to decarbonization. While not aligned with net-zero targets, this transition element is actively improving the emissions profile and represents intermediate performance on the path to sustainability.
Transition Element¶
| |
---|---|
Shift type: | Efficiency Shift |
Operations: | vehicle_km |
Activity measure: | vehicle_km |
Activity conversion: | 1 |
Activities¶
Parameters¶
Parameter | Unit | Description |
---|---|---|
bus_efficiency_improvement_factor | percent | Engine efficiency improvement factor for buses |
energy_intensity_buses_diesel | kwh_vehicle_km | Energy intensity diesel buses |
YAML Specification¶
sustainability: amber
type: update
longName: Improved bus engine technology to reduce fuel use.
shortName: Bus technology
version: 2.0.0
description: Reduce the amount of energy required to drive diesel, petrol, hydrogen,
CNG and LPG buses through improved engine technology
weightInversionExpression:
expression: ((1 / ( unknown_x / %[0] )) - 1) / %[1]
variables:
- energy_intensity_buses_diesel
- bus_efficiency_improvement_factor
unitOfMeasure: vehicle_km
cohort:
expression: '1'
variablesToUpdate:
- update: energy_intensity_buses_diesel
type: EFFICIENCY_IMPROVEMENT
by:
expression: '%[0]'
variables:
- bus_efficiency_improvement_factor
- update: energy_intensity_buses_petrol
type: EFFICIENCY_IMPROVEMENT
by:
expression: '%[0]'
variables:
- bus_efficiency_improvement_factor
- update: energy_intensity_buses_hydrogen
type: EFFICIENCY_IMPROVEMENT
by:
expression: '%[0]'
variables:
- bus_efficiency_improvement_factor
- update: energy_intensity_buses_gas
type: EFFICIENCY_IMPROVEMENT
by:
expression: '%[0]'
variables:
- bus_efficiency_improvement_factor
- update: energy_intensity_buses_lpg
type: EFFICIENCY_IMPROVEMENT
by:
expression: '%[0]'
variables:
- bus_efficiency_improvement_factor
carbonCausalChains:
atoc:
expression: '1'
chains:
- chain: diesel_buses
- chain: petrol_buses
- chain: hydrogen_buses
- chain: gas_buses
- chain: lpg_buses