Author Topic: Twin tanking.  (Read 14965 times)

Offline Rotary-Motion

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Re: Twin tanking.
« Reply #30 on: May 10, 2014, 08:19:13 PM »
my purge has a purge timer which I can set to any time, at this moment its set to 1 min 30 secs if I remember rightly, and purge timer LED is one of the flashing kind so flashes away till time is up letting me know its finished...

also to note my neighbours twin tank system VW T4 2.4 non turbo (they don't come or made with turbos) but VW enthusiasts fit VOLVO turbo running gear to make them turbo, my mate has this, (goes like shizz off a shovel) in 5th up hills still accelerating! in 1 min 30 secs will throw way more diesel through the pump/lines/injectors than my Peugeot boxer 2.5D, so his purge is less time.

also to note about purging I look at it like this to do a real purge meaning exchange 100% veg oil for 100% diesel would take way way longer than 1 min 30 secs, like mentioned IP's hold different varying amounts of fuel in them, most of it being a resivior of fuel sat there if needed, a purge to me is mainly clearing out the fuel in and out pipes and a little diluting down of the IP/lines/injectors so theres no hard cold fire up next cold start...


Offline Julian

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Re: Twin tanking.
« Reply #31 on: May 16, 2014, 10:32:35 PM »
I've got to this point ...

Both lines currently read the same sensor, but additional sensors are easily added.



Haven't really got a clue what I'm doing, just copying and pasting stuff, but it seems to work!
Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline Rotary-Motion

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Re: Twin tanking.
« Reply #32 on: May 17, 2014, 05:03:14 AM »
must say looking the part, will be following this one, has it cost much in parts? and can you get it to most things needed? or potentially can do it?

Offline Julian

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Re: Twin tanking.
« Reply #33 on: May 17, 2014, 07:45:35 AM »
A slightly more complex version can autonomously pilot a quadcopter via GPS waymarks, so yes the board is way more than capable.

The limiting factor is my ability to understand how it all works and program it!

Cheapest I've seen is Arduino £7, display £3, thermistor 20p, resistor, probably 2p.  Will probably need relays and a few more bits like enclosure, buttons, LEDs and maybe a bigger display, but still going to be very cheap.

Other, simpler controllers are available, but need a different arrangement to connect to the PC.  These can be had for around 4 quid.
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Offline Rotary-Motion

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Re: Twin tanking.
« Reply #34 on: May 17, 2014, 09:26:59 PM »
ok

Offline Julian

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Re: Twin tanking.
« Reply #35 on: May 17, 2014, 09:41:10 PM »
Got three temperature inputs now, but the LCD isn't really big enough to display all the info.  Mines a 16 column by 2 line.  I think 20 column by 4 line displays are available and still quite cheap.

I'll add an input to sense when the ignition is switched on.  Any other inputs needed or desirable?

Currently dismantled most if it to try and tidy things up.  It was starting to resemble the proverbial birds nest, but before I did I got the three temperatures and a "purge" warning with flashing cursor on the screen.
Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline julesandtash

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Re: Twin tanking.
« Reply #36 on: May 18, 2014, 09:41:33 PM »
I'm beginning to think that an arduino controlled bio processor is looking tempting  :)

Presumably there must be a shield available to connect it to an RJ45 ethernet cable which would make internet monitoring and even control a realistic proposition
7+ years of making bio.
1997 RangeRover P38A 2.5DSE and 2001 Audi Allroad 2.5 V6 Tdi all on B100
Home heating and hot water system on Palm based B100 and Aarrow 7KW wood burner on glycerol logs

Offline Julian

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Re: Twin tanking.
« Reply #37 on: May 18, 2014, 11:48:07 PM »
I'm beginning to think that an arduino controlled bio processor is looking tempting  :)

Presumably there must be a shield available to connect it to an RJ45 ethernet cable which would make internet monitoring and even control a realistic proposition

A processor controller was my first thought, but a veg controller was way more plausible as a first project.

If you understood what these things are capable of controlling a 3D printer, an automated processor would be child's play in comparison.   It's all down to having the brains to programme the thing ... not an area at which I excel, but it's great fun and most rewarding playing.

Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline Rotary-Motion

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Re: Twin tanking.
« Reply #38 on: May 19, 2014, 05:53:12 AM »
sounding good Julian, what are the 3 temp sensers for? why the ignition sense wire? wouldn't just living the system up by a power feed to the unit work when ignition is switched on? say like the radio powers up when turning the key, infact could use that wire being radios are usually centralized in the dash column. and it will already be fused to at the board.

you aiming at a processor control now or twin tank control?

Offline Julian

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Re: Twin tanking.
« Reply #39 on: May 19, 2014, 08:08:35 AM »
sounding good Julian, what are the 3 temp sensers for? why the ignition sense wire? wouldn't just living the system up by a power feed to the unit work when ignition is switched on? say like the radio powers up when turning the key, infact could use that wire being radios are usually centralized in the dash column. and it will already be fused to at the board.

you aiming at a processor control now or twin tank control?

Three sensors, just because it's possible.  I was thinking Oil temp, Tank temp and ambient.  You don't have to use them all, they will be there if you need them.  Initial thoughts were to have a power supply switched on by the ignition and, but if you switch the car off without purging, power would be available to sound an alarm.

All sorts of things are possible.  I had envisaged a page in the firmware where you can choose how many sensors your system uses and what you want to use them for ... all just thoughts at the moment, it's down to my ability to do it.

It would be good to do both.  A veg system is much more simple so I thought I'd play with that first.
Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline Rotary-Motion

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Re: Twin tanking.
« Reply #40 on: May 19, 2014, 05:18:36 PM »
you mention firmware can you get in and play with that too?

 :)

what programming language is it using?

Offline Julian

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Re: Twin tanking.
« Reply #41 on: May 19, 2014, 05:58:01 PM »
I know it can accept C+ and some other stuff, but typically this is the sort of "code" I've been playing with ...

**************************************************

/*
  LiquidCrystal Library - Hello World
 
 Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
 library works with all LCD displays that are compatible with the
 Hitachi HD44780 driver. There are many of them out there, and you
 can usually tell them by the 16-pin interface.
 
 This sketch prints "Hello World!" to the LCD
 and shows the time.
 
  The circuit:
 * LCD RS pin to digital pin 12
 * LCD Enable pin to digital pin 11
 * LCD D4 pin to digital pin 5
 * LCD D5 pin to digital pin 4
 * LCD D6 pin to digital pin 3
 * LCD D7 pin to digital pin 2
 * LCD R/W pin to ground
 * 10K resistor:
 * ends to +5V and ground
 * wiper to LCD VO pin (pin 3)
 
 Library originally added 18 Apr 2008
 by David A. Mellis
 library modified 5 Jul 2009
 by Limor Fried (http://www.ladyada.net)
 example added 9 Jul 2009
 by Tom Igoe
 modified 22 Nov 2010
 by Tom Igoe
 
 This example code is in the public domain.

 http://www.arduino.cc/en/Tutorial/LiquidCrystal
 */

// include the library code:
#include <LiquidCrystal.h>

// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
  // Print a message to the LCD.
  lcd.print("hello, world!");
}

void loop() {
  // set the cursor to column 0, line 1
  // (note: line 1 is the second row, since counting begins with 0):
  lcd.setCursor(0, 1);
  // print the number of seconds since reset:
  lcd.print(millis()/1000);






**************************************************
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Offline Rotary-Motion

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Re: Twin tanking.
« Reply #42 on: May 19, 2014, 08:48:16 PM »
bit like web site scripting

Offline Julian

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Re: Twin tanking.
« Reply #43 on: May 19, 2014, 09:35:50 PM »
Only in the sense that I know diddly squat about that too and muddle through copy and pasting stuff!
Used Cooking Oil Collection website ... http://www.surreyusedcookingoilcollection.palmergroup.co.uk

Offline Rotary-Motion

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Re: Twin tanking.
« Reply #44 on: May 19, 2014, 09:44:01 PM »
Only in the sense that I know diddly squat about that too and muddle through copy and pasting stuff!

that how i used to use it and change settings to see what happens trying to get a grip on it, had a very short tad on java too