1. EU-PEMS Project meeting
Ispra, 11th of April, 2005
AGENDA Point
“Time alignement”
PEMS EC DG JRC – Ispra - April 11, 2005

2. Different Time "Sources" Response time Time Resolution Time Alignement
PEMS EC DG JRC – Ispra - April 11, 2005

3. Different Time "Sources"
Air,
Fuel,
Power
demand
Exhaust
Engine
ECU
Torque,
Speed
Analyzer
CO(t4), …
NOx(t5),
Torque (t0),
Speed(t1)
Flow(t3)
PEMS EC DG JRC – Ispra - April 11, 2005

4. Response Time T10 T50 T90 T = 0 Delay time
PEMS EC DG JRC – Ispra - April 11, 2005

5. Time Resolution
PEMS EC DG JRC – Ispra - April 11, 2005

6. How does a different time shift influence the mass specific emissions ?
PEMS EC DG JRC – Ispra - April 11, 2005

7. How to find R2
PEMS EC DG JRC – Ispra - April 11, 2005

8. Correlation [i] = ∑ CO2[m] • flowrate [i+m]
PEMS EC DG JRC – Ispra - April 11, 2005

9. Correlation
PEMS EC DG JRC – Ispra - April 11, 2005

10. CO2
PEMS EC DG JRC – Ispra - April 11, 2005

11. CO2
PEMS EC DG JRC – Ispra - April 11, 2005

12. CO
PEMS EC DG JRC – Ispra - April 11, 2005

13. PEMS EC DG JRC – Ispra - April 11, 2005

14. Contribution to cumulative mass: 7%
PEMS EC DG JRC – Ispra - April 11, 2005

15. x 2.5
x 2.5
PEMS EC DG JRC – Ispra - April 11, 2005

16. PEMS EC DG JRC – Ispra - April 11, 2005