Carbon Footprint Methodology for Automotive Products
Principles
■ Key principles of Technical specification of life cycle carbon emission accounting of passenger cars
CATARC
中国汽车技术研究中心有限公司
China Automotive Technology and Research Center Co., Ltd.
Scope
Functional
unit
Subject
Principles
Data
collection
Data
Use
System
Vehicle
boundary production
Key
assumpti
ons
Material
production
Fixed boundary
➤ A fixed boundary is defined to enable comparability between
different passenger vehicle products
Boundary defined based on a set of criteria representing which
unit processes are a part of the system under study
This document adds the material production stage (including
raw material and recycled material), vehicle production stage
and use stage into life cycle carbon emission accounting range,
excluding carbon emissions from parts processing and
transportation.
◆ Product Level
Emissions must be reported at the product level.
Functional unit
The transportation services provided by a passenger
car traveling 1km within life cycle, and the life cycle
mileage is calculated by (1.5×105) km.
♦ Calculation method
According to IPCC and relevant passenger vehicle
standards of China, the accounting method of material
production stage, vehicle production stage and use
stage is determined. And recycled materials are also
considered.
Material
Vehicle
production
Use
Method
Time&
y
Geograph
Time & Geography
Primary Data First
Time: 3 months to 1 year; the
average data of the most recent
continuous production for 1 year
should be used preferentially.
Geography: Data on the actual
production geographic area.
On-site data should be collected and
use preferentially. When specific site
data collecting is not feasible, the
default value should be used.
Secondary data can only be used when
site-specific data is not available and
there is no corresponding default value.
LCI Database
Environmental
Influencing Factors
Key Assumptions
CALCD
CICES
Global Warming Potential
Life cycle mileage
(GWP) [gCO2e/km],
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