A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Particulate Measurement - Dilution Tunnel Stabilization
Particulate testing was conducted to determine the number of hot-start UDDS (LA-4) cycles that must be driven to stabilize a clean 18-inch diameter dilution tunnel. The results of this investigation indicate that valid particulate measurements can be obtained with a clean dilution tunnel; i.e., essentially no LA-4 cycles are required to stabilize the dilution tunnel with respect to particulate material. This conclusion is based on the observation that slightly higher than average particulate levels (taken with stabilized tunnel) were measured during the first (actually first two) LA-4 test after tunnel cleaning. If particulate material is being lost to the dilution tunnel walls it is minimal and not significant compared to normal test variability.
Particulate Measurement - Dilution Tunnel Stabilization
Particulate testing was conducted to determine the number of hot-start UDDS (LA-4) cycles that must be driven to stabilize a clean 18-inch diameter dilution tunnel. The results of this investigation indicate that valid particulate measurements can be obtained with a clean dilution tunnel; i.e., essentially no LA-4 cycles are required to stabilize the dilution tunnel with respect to particulate material. This conclusion is based on the observation that slightly higher than average particulate levels (taken with stabilized tunnel) were measured during the first (actually first two) LA-4 test after tunnel cleaning. If particulate material is being lost to the dilution tunnel walls it is minimal and not significant compared to normal test variability.
Particulate Measurement - Dilution Tunnel Stabilization
E. Danielson (author)
1978
6 pages
Report
No indication
English
Evaluation of a portable micro-dilution tunnel particulate measurement system
| Automotive engineering | 2005
Design of a portable micro-dilution tunnel particulate matter emissions measurement system
| Automotive engineering | 2005
Nano particulate matter evolution in a CFR1065 dilution tunnel
| Automotive engineering | 2009
PM measurement with partial dilution tunnel - influence of sampling line on PM measurement
| Automotive engineering | 2001
Online measurement of PM from residential wood heaters in a dilution tunnel
| Taylor & Francis Verlag | 2022