Welcome to the North American Subaru Impreza Owners Club Saturday April 4, 2020
Home Forums Images WikiNASIOC Products Store Modifications Upgrade Garage
NASIOC
Go Back   NASIOC > NASIOC Technical > Water/Methanol Injection, Nitrous & Intercooler Cooling

Welcome to NASIOC - The world's largest online community for Subaru enthusiasts!
Welcome to the NASIOC.com Subaru forum.

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, free of charge, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!

If you have any problems with the registration process or your account login, please contact us.







* As an Amazon Associate I earn from qualifying purchases. 
* Registered users of the site do not see these ads. 
Reply
 
Thread Tools Display Modes
Old 01-21-2007, 02:27 PM   #1
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default Aquamist HFS-5 system design concept explained...




Detailed study of the new HFS-5 system and the concept behind the designed.




Design aim of the HFS-5 water/methanol injection system:
In order to maximize of effect of water/methanol injection, the rate of delivery should be closely related to the real time engine operating parameters. The first objective is finding a signal that is comparable to the engine’s cooling/octane demand at the exact moment in time.

Finding the signal to match engine’s demand:
Load sensors such as throttle position, mass air flow and MAP sensor are a prime signal source of engine load. But without RPM reference, these sensors are only representing a two dimensional impression. For example, MAF sensor without RPM reference only measures air consumption, regardless of gearing or boost pressure. The engine could be cruising at high speed (less stress) or it can be travelling at 20mph on a rally stage under extreme load and high temperature stress. The same chunk of MAF signal cannot represent the engine’s running condition overall.

Why tracking fuel injector duty cycle:
With the help of the modern engine management system, the same chunk of MAF signal, coupled up with a bunch of signals gathered from sensors such as ‘air temperature’, ‘coolant temperature’ and ‘EGT’ (interpreting the lambda probe’s heater element) and of course, engine speed. It will make an informed judgment when to add or trim fuel depending on the real-time operating environments. The final decision made by the management will be reflected by the duty cycle of the fuel injector. The HFS-5 uses this IDC signal to meter flow.

Picking the correct delivery method and hardware to complete the task:

We have ruled out the variable pump-speed delivery system for a numbers of reasons. Due to the inertia of the rotating mass, variable pump-speed system is not responsive to the fast changing engine load at various throttle openings and engine speed changes, especially during gear shifts. Flow range is narrow due to limited pressure span. It requires 4x the pressure change to produce twice the flow change. Poor atomisation and pulsating line pressure at low pump speed is an inherent characteristic of such a system. Without consistent droplet size is vital to inlet cooling and even cylinder distribution, one will always tune for cylinder receiving the least cooling, resulting over-injection on other cylinders.

HFS-5 chooses the well established method for fluid delivery:
Decision was made to employ the ‘tried and tested’ delivery system similar to a fuel injection system to meter fluid flow. A 150W heavy duty pump is made specially for us by Shurflo USA. Equipped with three 125psi internal by-pass valves provides the regulated system pressure. A surge arrestor/accumulator refines the low-ripple further. A high-speed stainless inline valve completes the line up. This valve is capable of flow over a litre of fluid at 125psi. A dedicated controller reads the fuel injector’s duty cycle % and channels it to the inline valve.

A dash gauge displays the flow information from a digital turbine flow sensor:

Failsafe is serviced by the Aquamist’s proven DDS3 module, which is designed to go further then just detect clogged jet/nozzle and cut hose…..this device can give visual feedback on a partially clogged jet/nozzle. Two switched outputs provide the necessary interface with device such as boost control valve and map switch equipped engine controllers.


HFS-5 meets all criteria of a reliable and highly precise fluid delivery system:
We believe the HFS-5 is the only fluid delivery system that meets the minimum requirement for achieving full integration into your tuning programme, with absolute precision. Tracking the fuel delivery is the most reliable method to meter your water/methanol flow accurately under the whole engine operating range. Anything short of this means having to tailor your fuel map to compensate the irregular fluid quantity ingested by the engine.
Should you decided not to mirror the fuel flow in your future upgrade programme, the HFS-5 system can read a PWM output from a third party engine management controller so a custom water/methanol map can be created.
* Registered users of the site do not see these ads.

Last edited by Aquamist; 02-04-2008 at 06:58 PM.
Aquamist is offline   Reply With Quote
Sponsored Links
* Registered users of the site do not see these ads.
Old 01-21-2007, 06:32 PM   #2
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

post deleted

Last edited by Aquamist; 01-26-2007 at 05:45 PM.
Aquamist is offline   Reply With Quote
Old 01-21-2007, 06:55 PM   #3
ShaggyGT
*** Banned ***
 
Member#: 19221
Join Date: May 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2005 Legacy GT (STi)
UR35R/Rotated Intake Mani

Default

Good stuff Richard.

Just to note, you cant view the thread without being a member. Maybe post some of the details of the group buy here to make it easier for those who dont want to register on the SRTForums.

-Matt
PDP
ShaggyGT is offline   Reply With Quote
Old 01-21-2007, 07:25 PM   #4
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

Hello Matt,

I will relocate the GB thread on a subforum that is accessable to all. Thank you for notifying me.
Aquamist is offline   Reply With Quote
Old 01-21-2007, 07:42 PM   #5
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

Link is revised - no signing in is required.
Aquamist is offline   Reply With Quote
Old 01-21-2007, 07:44 PM   #6
ShaggyGT
*** Banned ***
 
Member#: 19221
Join Date: May 2002
Chapter/Region: South East
Location: Jacksonville, FL
Vehicle:
2005 Legacy GT (STi)
UR35R/Rotated Intake Mani

Default

No problem Richard.

This is a great time for those who are deciding on wether or not to purchase a water injection kit to get a great deal on the best kit on the market. It comes with all the cool features and safeguards to ensure a rock solid and safe water injection setup.

-Matt
ShaggyGT is offline   Reply With Quote
Old 01-21-2007, 08:12 PM   #7
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

Matt,

The system offered is only a bit above the System 1s. But only limited to 25 units across five boards. After the 15th of February or all units sold, which ever comes sooner. The HFS-5 system will be at the MRRP immediately. If all things being equal, there are only 5 systems per board.
Aquamist is offline   Reply With Quote
Old 01-21-2007, 09:02 PM   #8
djerickd
Scooby Guru
 
Member#: 3782
Join Date: Jan 2001
Chapter/Region: South East
Location: Tampa B*tch!
Vehicle:
02 WRX WFC#040
Clean on 19's

Default

awesome price! jump on this people!
djerickd is offline   Reply With Quote
Old 01-22-2007, 10:32 PM   #9
humara
Scooby Specialist
 
Member#: 53289
Join Date: Jan 2004
Chapter/Region: SCIC
Vehicle:
04 wrx waggin'
wrb

Default

omg!!!
wtf???

i jumped. i jumped.
hfs
FTW!!!!
humara is offline   Reply With Quote
Old 01-25-2007, 12:34 AM   #10
dsm02c
Scooby Newbie
 
Member#: 130822
Join Date: Nov 2006
Chapter/Region: South East
Location: Tampa, Fl
Vehicle:
2007 STi
SWP

Default

I jumped....
dsm02c is offline   Reply With Quote
Old 01-25-2007, 12:46 AM   #11
djerickd
Scooby Guru
 
Member#: 3782
Join Date: Jan 2001
Chapter/Region: South East
Location: Tampa B*tch!
Vehicle:
02 WRX WFC#040
Clean on 19's

Default

that 07 is gonna be a beast!
djerickd is offline   Reply With Quote
Old 01-25-2007, 01:34 PM   #12
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

Ten orders has been filled after three days, price has now dropped to the next price break today.
Aquamist is offline   Reply With Quote
Old 01-26-2007, 04:35 PM   #13
humara
Scooby Specialist
 
Member#: 53289
Join Date: Jan 2004
Chapter/Region: SCIC
Vehicle:
04 wrx waggin'
wrb

Default

wow wow wee wow
25 confirmed.
now i gotta figure out how to put this thing together!
humara is offline   Reply With Quote
Old 01-26-2007, 06:09 PM   #14
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

I will be on this thread to help...
Aquamist is offline   Reply With Quote
Old 01-27-2007, 11:53 AM   #15
epoth
Scooby Newbie
 
Member#: 49667
Join Date: Dec 2003
Vehicle:
2004 WRX 2.5 Hybrid
8cm18G - PPG Helical

Default

Man, that sucks... gone for a few days and group buy happens and is closed. Oh well I guess.
epoth is offline   Reply With Quote
Old 01-29-2007, 09:56 AM   #16
ride5000
Scooby Guru
 
Member#: 32792
Join Date: Feb 2003
Chapter/Region: NESIC
Location: lincoln, ri
Vehicle:
2003 GGA MBP
12.9 / 105+

Default

richard, are the components pictured above available separately?

i am interested in a pump, hsv, and a couple of nozzles.

tia
ken
ride5000 is offline   Reply With Quote
Old 01-29-2007, 10:37 AM   #17
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

One of our US dealer called Georges import can supply them to you.

contact details:
Georges Imports Ltd
8011 State Line Road
Kansas City
MO 64114
USA
TEL: +1 816 333 6582
FAX: +1 816 361 2096
Email: [email protected]
Website: www.kcsaab.com
Contact: Brad Schaffner
Aquamist is offline   Reply With Quote
Old 01-29-2007, 11:18 AM   #18
STIStalker
Scooby Newbie
 
Member#: 92783
Join Date: Aug 2005
Chapter/Region: NWIC
Location: Puyallup, WA
Vehicle:
2004 WRX
WRB

Default

Quote:
Originally Posted by djerickd View Post
awesome price! jump on this people!
I didn't see the price anywhere.. How much? Are they still available?
STIStalker is offline   Reply With Quote
Old 01-29-2007, 12:07 PM   #19
siliversti06
Scooby Newbie
 
Member#: 117295
Join Date: Jun 2006
Default

i cant find the pirce anywhere also. are they still avaliable? if so, add me on, and send me the link on how to pay. thanx
siliversti06 is offline   Reply With Quote
Old 01-29-2007, 12:13 PM   #20
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

The offer is closed on Friday last week when it reached the allocated 25 units. Put your name down as a reserve in case someone drops out.

contact:
Jack Blalock [[email protected]]
Aquamist is offline   Reply With Quote
Old 01-29-2007, 12:19 PM   #21
siliversti06
Scooby Newbie
 
Member#: 117295
Join Date: Jun 2006
Default

thanx
siliversti06 is offline   Reply With Quote
Old 01-29-2007, 08:20 PM   #22
FleaDog
Scooby Specialist
 
Member#: 96267
Join Date: Sep 2005
Chapter/Region: MAIC
Location: West Chester
Vehicle:
'06 20G-XT'd STI
CGM & NT03+M

Default

PM sent
FleaDog is offline   Reply With Quote
Old 02-04-2008, 03:11 PM   #23
Zak Shaker
Scooby Newbie
 
Member#: 146250
Join Date: Apr 2007
Location: Mauritius
Vehicle:
1999 STI type R
white

Default

what was the price of this ? totaly missed that thread...
or what will be the official price then ? as I couldn't find much info on this unit...
Zak Shaker is offline   Reply With Quote
Old 02-04-2008, 04:32 PM   #24
Aquamist
NASIOC Manufacturer
 
Member#: 110029
Join Date: Mar 2006
Location: Sussex, England
Vehicle:
2004 Citroen Picasso
Silver

Default

The HFS-5 system comprised of: MRRP: $895
- Constant pressure system - very low pressure ripple (factory set to 125psi)
- High speed PWM valve ensure accurate flow control against fuel duty cycle.
- Fast dymanic response time to load and RPM change
- Consistant droplet size due to high system pressure under all conditions.
- Powerful 150 Watt Shurflo pump motor capable of maintaining flow beyond 2 litre/minute
- DDS3 (bundled) ensures flow is monitored constantly for clogged jet or cut hose.
- 2x failsafe channels to perform advanced failsafe tasks such as boost cut, map switch, etc.
- Water and methanol compatible (0-100%)

Link to HFS-5 (user manual):
http://www.aquamist.co.uk/forum/gall.../HFS-5-v3w.pdf

Link to a HFS-5 dyno session:
http://forums.nasioc.com/forums/show....php?t=1332521

Flambeau water/methanol tanks:
http://fluids.flambeau.com

Phone:
Toll Free: 866-836-0198
or 706-342-8300 ext 308

Address:
1330 Atlanta Hwy
Madison, GA 30650 USA
Aquamist is offline   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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Aquamist HFS-5 will be replaced by HFS-6 in 2009 Aquamist Water/Methanol Injection, Nitrous & Intercooler Cooling 108 07-30-2009 04:47 AM
Aquamist HFS-5 system: Official Q&A... Aquamist Water/Methanol Injection, Nitrous & Intercooler Cooling 92 06-27-2009 05:40 AM
FS: Aquamist HFS-5 Water Injection System mitsuturbo NWIC Private Classifieds 6 09-03-2007 11:23 PM
FS: (WA) Aquamist HFS-5 Water Injection System mitsuturbo Engine/Power/Exhaust 5 09-03-2007 11:22 PM

All times are GMT -4. The time now is 07:46 AM.


Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Powered by Searchlight © 2020 Axivo Inc.
Copyright ©1999 - 2019, North American Subaru Impreza Owners Club, Inc.

As an Amazon Associate I earn from qualifying purchases.