T-1B1b-TE-7 - Improved heavy truck engine technology

Background¶

IPCC WG3 definition: M-1A-15 - Improved Energy Efficiency for Vehicles.

Improved vehicle and engine technology can reduce emissions from fossil-fueled trucks. This shift can help reduce emissions in the short term, until zero-emission technologies reach their full potential.

Sustainability Category: Amber¶

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:	tonne_km
Activity measure:	tonne_km
Activity conversion:	1

Activities¶

⁠	Improves:
	T-1B1b-A-1 - Petrol HGV
	T-1B1b-A-2 - Diesel HGV
	T-1B1b-A-3 - Pure electric HGV
	T-1B1b-A-5 - Hydrogen HGV
	T-1B1b-TE-1 - Shift to gas heavy trucks

Parameters¶

Parameter	Unit	Description
energy_intensity_freight_heavy_trucks_diesel	kwh_tonne_km	Average energy intensity heavy trucks (diesel)
heavy_truck_efficiency_improvement_factor	percent	Engine efficiency improvement factor for HGVs

YAML Specification¶

sustainability: amber
version: 2.0.2
type: update
longName: Improved Internal Combustion Engine (ICE) heavy truck engine technology
  to reduce fuel use.
shortName: Heavy truck technology
weightInversionExpression:
  expression: ((1 / ( unknown_x / %[0] )) - 1) / %[1]
  variables:
  - energy_intensity_freight_heavy_trucks_diesel
  - heavy_truck_efficiency_improvement_factor
description: Reduce the amount of energy required to operate diesel, hydrogen and
  battery electric heavy trucks through improved engine technology
unitOfMeasure: tonne_km
cohort:
  expression: '1'
variablesToUpdate:
- update: energy_intensity_freight_heavy_trucks_diesel
  type: EFFICIENCY_IMPROVEMENT
  by:
    expression: '%[0]'
    variables:
    - heavy_truck_efficiency_improvement_factor
- update: energy_intensity_freight_heavy_trucks_bev
  type: EFFICIENCY_IMPROVEMENT
  by:
    expression: '%[0]'
    variables:
    - heavy_truck_efficiency_improvement_factor
- update: energy_intensity_freight_heavy_trucks_hydrogen
  type: EFFICIENCY_IMPROVEMENT
  by:
    expression: '%[0]'
    variables:
    - heavy_truck_efficiency_improvement_factor
- update: energy_intensity_freight_heavy_trucks_gas
  type: EFFICIENCY_IMPROVEMENT
  by:
    expression: '%[0]'
    variables:
    - heavy_truck_efficiency_improvement_factor
- update: energy_intensity_freight_heavy_trucks_petrol
  type: EFFICIENCY_IMPROVEMENT
  by:
    expression: '%[0]'
    variables:
    - heavy_truck_efficiency_improvement_factor
carbonCausalChains:
  atoc:
    expression: '1'
  chains:
  - chain: diesel_heavy_trucks
  - chain: battery_electric_heavy_trucks
  - chain: hydrogen_heavy_trucks
  - chain: gas_heavy_trucks
  - chain: petrol_heavy_trucks