High pressure air spray assistant power supply control strategies and their effects on diesel engine under transient operations

In order to reduce smoke from direct-injection (DI) turbo-charged and after-cooled (TCA) diesel engines under transient operations, the real-time controlling and measuring system of a high pressure air spray assistant power supply (HPAS) was developed. Effects of HPAS on a DI TCA diesel engine under...

Full description

Saved in:
Bibliographic Details
Published in:Frontiers in Energy 2007-07, Vol.1 (3), p.295-299
Main Authors: Han, Yongqiang, Liu, Zhongchang, Wang, Zhongshu, Zhu, Ruoqun
Format: Article
Language:English
Subjects:
Diesel engines
High pressure
Internal combustion engines
Power supplies
Power supply
Smoke
Sprayers
Sprays
Strategy
Supplying
Transient operation
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In order to reduce smoke from direct-injection (DI) turbo-charged and after-cooled (TCA) diesel engines under transient operations, the real-time controlling and measuring system of a high pressure air spray assistant power supply (HPAS) was developed. Effects of HPAS on a DI TCA diesel engine under constant engine speed and increased torque (CSIT) transient operations were studied by using different control strategies. Pre-spray (PS) strategy, which means supplying highly pressurized air into the exhaust manifold two seconds before the accelerating-graph begins to rise and stopping spraying air when the accelerating-graph stops rising. Two other strategies--full-time-spray (FTS) and middle-time-spray (MTS)--were used to fully exploit HPAS potential. With the FTS and MTS strategies, the HPAS system can remarkably decrease smoke from DI TCA diesel engines under transient operations.[PUBLICATION ABSTRACT]
ISSN:1673-7393
2095-1701
1673-7504
2095-1698
DOI:10.1007/s11708-007-0042-6