1. JAMA position on RDE Boundary Condition1

2. Boundary Condition – (1)
JAMA
PEMS
Random Cycle
Environmental Condition
Ambient Temperature
10’C to 30’C, Hot Start
10’C to 30’C + Family Concept,
Hot start
Ambient Humidity
Correction to average humidity ←
Ambient Altitude
Upper limit to the average hight of metropolitan cities（about 700m?）
Oppose due to big influence on test facility
Driving Condition
Definition of L/M/H
Shares of L/M/H
Depending upon market driving data
Average Speeds of L/M/H
No need to set out. It will be covered by the market driving data above.
No need to set out.
Idling percentages for L/M/H
Driving dynamics
(vehicle accelerations)
Data for extreme acceleration (vehicle performance > 90%) should be excluded. (This idea has been approved already in RC discussion)
(1) If the ratio of window including extreme acceleration is more than 10%, the test should be void, or
(2) If extreme acceleration (vehicle performance > 90%) lasts more than xx seconds, the test should be void .
Upper limit is [90]% of max speed X acceleration
Road grade
Upper limit depending upon actual topographic data
Not necessary (because it is reproduced by load condition of ST)

3. Boundary Condition – (2)
JAMA
PEMS
Random Cycle
Test Procedure
Total test duration
Same condition as HDV (More than 5 times compare to CO2 certification)
NEDC - WLTC
Number of Speed phases 3
Driving Condition
(Rules for excluding trips etc)
Same as above noted [Driving condition] ←
Decision on the analysis of idling
Based on Market data
Correction factors for emissions
Necessary to correct using CO2 and temperature, oppose to other corrections that there could be CF=1
Total number of short trips (ST)
N/A
Give priority to total length of cycle
L/M：3±1、H；2±1
Initial source of ST
Number of ST in the data base
Gear Shifting strategy
1. GSI
2. Validate after testing, if there are big difference from GSI, that shift should be void
AT/MMT/CVT as it is
WLTC shift or GSI

4. Boundary Condition – (3)
JAMA
PEMS
Random Cycle
JAMA Proposal to ADD
Condition to start testing
Hot
【Justification】
-Necessary to do Hot test
-Lack of soak room for cold test,
big influence on test facility
-Test time/cost of re-test for cold test,
-Risk of frequent re-test (because proficiency driving is impossible)
Pollutants to be measured
NOx only
All
Duration for testing
Daytime
N/A
Vehicle Weight
RM + 60 kg or less ←
Climate
Same condition as HDV (“Normal” climate)
Fuel
Same fuel as Emission testing