waterinjection.info  

Go Back   waterinjection.info > Forum policy and contents > Water/alcohol supplementary technical papers

Reply
 
Thread Tools Display Modes
  #1  
Old 05-03-2014, 01:55 PM
Richard L Richard L is offline
Manufacturer sponsor
 
Join Date: Oct 2003
Location: England
Posts: 4,781
Default SAE: Prediction of NOx Reduction Due to Port WI in a DI Diesel Engines (introduction & link)


"SAE holds the copyright to this document and will not grant permission
for posting it on public sites. So you have to pay $24 to view it.
There is little we can do but provides the the abstract and link only."




Prediction of NOx Reduction Rate Due to Port Water Injection in a DI Diesel Engine


http://papers.sae.org/972961/
SAE.org publications (small payment required)




The effect of port water injection on NOx formation was examined theoretically as well as experimentally. In the experiment, water was injected into each suction port of a four cylinder turbocharged DI diesel engine using gasoline injectors. The exhaust NOx was reduced significantly by port water injection, and about 50 % reduction in NOx concentration was attained under various engine operation conditions by injecting the amount of water of 0.03 kg per unit kg of dry air. Comparing the experimental results and the analytical ones based on the two-zone model developed by the authors, it is shown that the NOx reduction rate due to port water injection is dependent on the equivalent absolute humidity of the injected water and is independent on engine load, fuel injection timing and water injection timing. In other word, it becomes clear that the reduction rate of NOx in the case of port water injection is almost independent on the heat release pattern, and the NOx formation is suppressed by a decrease in temperature of the burned gas, which results from an increase in specific heat of the in-cylinder gas due to humidification.
__________________
Richard L
aquamist technical support
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT +1. The time now is 06:55 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.