Aquamist HFS-5 will be replaced by HFS-6 in2009 - Page 3

kkarim · Feb 12, 2009, 03:31 AM

looks like the "6" doesn't have a PIA input. :/ Will it read such signal directly from the ecu?

Richard, is it possible that the hfs-6 will have a controller for wmi flow? with 3d tables and such...

Richard L · Feb 12, 2009, 07:37 AM

What is a PIA input?

The HFS-6 does not use tables, its delivery rate is calculated base on a formula. Resolution is almost un-limited.

dudical26 · Feb 12, 2009, 08:14 AM

Quote:

Originally Posted by Richard L

We will probably under some criticism from other makers by using ethernet connector of automotive applications. I believe most mobile installation with some computer system will use this tyype og connector or optic fibre link. This incluces plane and trains.

The DDSv10 uses RJ45 for the gauge link, so far we have not received any reported problems. The gold plated contact surfaces is a plus for moist air ingression, resulting good corrosion protection.

As regarding current handing, it is good from microamps to amps (2A inrush), but H6 don't have current drains over an amps.

Fiber optic is pretty cool especially because it allows expandability within the fiber optic "loop"

However, it adds more cost and complexity then is really needed for something like this.

I have been using the DDS3 v.10 with the ethernet style cable since it first came out and I have no problems to report.

kkarim · Feb 12, 2009, 08:16 AM

hfs5 had the thing that made the flow follow the injector pulse. i think it was called pia2 or something right?

how will the hfs-6 calculate delivery rate? is this formula accessible by the user, or is it fixed and based on MAP/MAF/injector signal?

esevo · Feb 12, 2009, 08:17 AM

This kit is a revolution! It is so cool you can implement map sensors for those with out IDC (diesels) And so much more!!!

Most important, this will reduce install errors and diagnosing. So Richard can focus on developing new and cool stuff!!!

Evan Smith

EvoTio · Feb 12, 2009, 08:54 AM

Quote:

Originally Posted by kkarim

looks like the "6" doesn't have a PIA input. :/ Will it read such signal directly from the ecu?

Are you talking about the fiA2?

dudical26 · Feb 12, 2009, 09:49 AM

Quote:

Originally Posted by kkarim

hfs5 had the thing that made the flow follow the injector pulse. i think it was called pia2 or something right?

how will the hfs-6 calculate delivery rate? is this formula accessible by the user, or is it fixed and based on MAP/MAF/injector signal?

FIA2 functionality is on-board. No need for seperate module.

The HFS-6 can read IDC from fuel injector or 0-5v from MAP sensor or any other 0-5v sensor.

Injection curve is pretty much completly customizable. You can control the trigger, offset, slope, etc...

dudical26 · Feb 12, 2009, 09:51 AM

Quote:

Originally Posted by esevo

This kit is a revolution! It is so cool you can implement map sensors for those with out IDC (diesels) And so much more!!!

Most important, this will reduce install errors and diagnosing. So Richard can focus on developing new and cool stuff!!!

Evan Smith

Couldn't agree more.

Richard needs to be developing new and amazing components, not trouble shooting, hehe.

Thats why you and I are around to answer questions.

esevo · Feb 12, 2009, 03:14 PM

Quote:

Originally Posted by dudical26

Couldn't agree more.

Richard needs to be developing new and amazing components, not trouble shooting, hehe.

Thats why you and I are around to answer questions.

+1000!

Amazing work Richard and the guys at ERL!!

Evan Smith

Richard L · Feb 12, 2009, 03:36 PM

I have made another drawing to identify the user accessible parameter. I need help on explain this part as I am not very good in this type of work. I hope all those who has been assisting me with ideas over last 12 month to develop this system can come forward to help other. I thank you in advance.

It is basically a "plug and play" HFS-5 system from factory, with lot of possibilities, if required.

kkarim · Feb 12, 2009, 07:36 PM

looks/sounds great!

will it possible to make the flow of meth taper at higher revs instead of using an inline restrictor?

Richard, are you guys planning to release some sort of controller that can be mapped from a pc?

Richard L · Feb 13, 2009, 02:18 AM

You can make the flow taper at the top end with restrictor or increase the boost compensation trimmer. As the boost pressure is tapering close to the wastegate setting, this effective reduce the flow as RPM climbs.

We will consider a PS based system. There is very little the HFS6 cannot do as more information become available. As mentioned before, user defines the variables in the fornula that governs the flow. This menthod enables you to have very high resolution compared to a 8x8 or 16x16 table.

If you are interested in a mappable system, the Hydramist (Hydra+Aquamist) is available. The HFS-6 can be used in conjunction with a third party ECU with a spare PWM output. I think a mapping a PC based system can be quite tedious, even for a tunnnig company. Why re-inventing the wheel.

dudical26 · Feb 13, 2009, 09:08 AM

Edit - See Post Below

dudical26 · Feb 13, 2009, 10:23 AM

This is my best attempt at trying to explain the functions of the potentiometers on the HFS – 6
Below are graphs of the functions of the main adjustment parameters.

Basically in stock configuration it works just like HFS-5. You set the “THRES ADJ” to set the trigger threshold.

Then you have 3 Pots which allow you to modify the meth injection curve.

The Meth curve will be defined as follows
METH % = IDC GAIN(FUEL %) + IDC TRIM + (PSI * BOOST COMP)

IDC TRIM – Allows you to provide an offset for the duty cycle that the solenoid valve follows. For example if the THRES ADJ is set to 30% IDC and the IDC TRIM is set to + 10% (or 60% as seen on the trim) then the solenoid for injecting methanol will start at a duty cycle of 40% instead of 30%. Basically since the meth solenoid mirrors your fuel IDC, you can calculate meth IDC by doing Fuel IDC + or – the IDC TRIM.

IDC GAIN – can be seen as the slope variable of the line graph for the methanol injection curve. In stock configuration the value is 1. Meaning that there is a 1 to 1 ratio of fuel to meth, if you increase the GAIN to say 1.2, then as fuel increases by 1 meth will increase by 1.2

BOOST COMP – Is basically the same thing as IDC GAIN but for boost. In stock configuration it is zero, meaning that as boost increased, meth % does nothing. You can increase BOOST COMP to say a value of 1. This would mean that as boost increase by 1 psi, METH % will also increase by 1%. (I am not sure of the actual ratio of psi to meth % but the theory is the same regardless of the relationship. Boost Comp works of voltage on a 0-5v scale not actual boost so we will need a reference from Richard to figure out the exact relationship.)

FLSF SENS = failsafe sensitivity. Delay time between when flow sensor sees a flow drop and when failsafe circuit is activated. Default ~400ms

FLSF RST = failsafe reset timer. Once failsafe circuit has been activated this is the amount of time it will stay active for before switching back to normal condition. Default = 4 seconds

Dr = dummy resistor. (avoiding CEL)

Jumper for “INJ” is for disabling the solenoid valve during dry test. This way you can configure the POTS without actually spraying any meth.

RED LED for IDC >95% - warns the user that IDC is greater than 95%, useful for tuning purposes.

Please let me know if this makes sense.

Richard L · Feb 13, 2009, 11:25 AM

Dudical,

This is a great description of how the HFS-6 works. The concept of the HFS6 in a nut shell. A little screw driver and re-define the entire flow charactertistics, with predictable response.

Thank you so much.

I like to add one comment, to revert the system back to "HFS-5" mode just put all the trimmers to 12'oclock.