| IMPROVEMENT OF TRANSIENT OPERATION CONTROLLABILITY
IN ENGINE TEST BENCH FOR HEAVY-DUTY VEHICLES |
Norifumi Mizushima1
, Shigeo Sato2, Hiroyuki Yagi2, Hisakazu Suzuki3 |
1National Institute of Advanced Industrial Science and Technology (AIST)
2ONO SOKKI CO., LTD.
3National Traffic Safety and Environment Laboratory (NTSEL) |
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| ABSTRACT |
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In this study, two kinds of control methods for the transient operation of an engine test bench for heavy-duty
vehicles were applied in the JE05 test cycle and World Harmonized Transient Cycle (WHTC) test conditions in order to
evaluate the controllability of transient operations and the effect on emissions. One control method uses dynamometer torque
with its inertia correction as the feedback signal (dyno torque F/B control); the other method uses axial torque measured by
a flange-type high-response torque meter as the feedback signal (axial torque F/B control). The transient operation
controllability using the axial torque F/B control improved compared with the dyno torque F/B control. The results influence
NOx emissions in the emissions test cycle, such as JE05 and WHTC, with the engine test bench. Axial torque F/B control
could become a more useful technique when it is required to improve the reproducibility of real driving conditions. |
| Key Words:
Engine, Measurement, Evaluation, Test bench, Control, Emissions |
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Corresponding Author.
Norifumi Mizushima , Email. 
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