The River Cruiser "Rhapsody in Glue"
Speeduino Configuration with "Tuner Studio":-
| Date |
Discussion |
| April 2023 |
The flexibility of the Speeduino ECU software is achieved
by making all the program settings external. They are contained
in a special file with the extension ".msq". When all the parameters
have been set, and there's close to 2,500 of them, the file
is written out to the Arduino to create a working ECU.
The ".msq" file is a plain text (XML) file and could be created
and managed with a basic text editor. It could then be written
out to the Arduino using one of a number of readily available
programming tools. However, there is an easier way. A program,
"Tuner Studio", allows all parameters to be set very easily,
via dialogue boxes, and will generate the various 3D data tables
automatically, based on the parameters you provide. It can also
write directly to an Arduino connected to the USB port. Tuner
Studio, in its basic form, is free. However, it can be upgraded
to a "pro" version for under $100 and the extra functionality
is well worth the money.
Tuner Studio not only allows the basic parameters for the fuel
injection system, (and ignition, although that's not being used
here), to be set-up initially, but to be then connected directly
to the engine, whilst running, to allow fine tuning. A most
comprehensive display of all engine parameters is provided,
together with logging facilities to assess performance over
time.
This chapter is dedicated to setting up the Speeduino ECU using
Tuner Studio. The headings below correspond with, and are in
the same order as, the menu selections available within Tuner
Studio. All the settings that have been used thus far are listed
here as much as just to have a written record of what has been
done, rather than any form of explanatory document. The settings
almost certainly will change with further testing and as understanding
dawns - hopefully!
| SETTINGS MENU |
|
| Engine Constants: |
|
| Set "Required Fuel": |
|
| Engine Displacement |
149.3cu. in. |
| Number of cylinders |
6 |
| Injector flow |
84 lb/hr. (42lb/hr * 2 for dual injectors) |
| Air Fuel Ratio |
14.7 (For normal petrol) |
| Basic pulse width |
3.1mSec |
|
|
| Control Algorithm |
MAP |
| Squirts per Engine Cycle |
6 |
| Injector Staging |
Simultaneous |
| Engine Stroke |
"4 Stroke" |
| Number of Cylinders |
6 |
| Injector Port Type |
"Throttle Body" (Ignored) |
| Number of injectors |
2 |
| Engine Type |
Even Fire |
|
|
| Board Layout |
Speeduino v0.3 |
| Stoichiometric Ratio |
14.7 |
| Injector Layout |
Paired |
| MAP Sample Method |
Cycle Average |
| MAP Sample Switch Point |
0 |
|
|
| INJECTOR CHARACTERISTICS |
|
| Injector Limit |
90% |
| Injector Open Time (ms) |
1.0 |
| Battery Voltage Correction Mode |
"Open Time Only" |
|
|
| TRIGGER SETTINGS |
|
|
|
| Trigger Pattern |
"Missing Tooth" |
| Primary Base Teeth |
36 |
| Primary Trigger Speed |
"Crank Speed" |
| Missing Teeth |
1 |
| Trigger Angle Multiplier |
0 |
| Trigger Angle (Deg) |
20 |
| Skip Revolution (cycles) |
1 |
| Trigger Edge |
"Rising" |
| Missing Tooth Secondary Type |
"Single Tooth Cam" |
| Level for 1st Phase |
"Low" |
| Trigger Filter |
"Medium" |
| Re-Sync Every Cycle |
"No" |
|
|
| INPUT AIR TEMP (IAT) DENSITY |
Default |
|
|
| BARROMETRIC CORRECTION |
Default |
|
|
|
|
| TUNING MENU: |
|
|
|
| Acceleration Enrichment: |
|
| Enrichment Mode |
MAP |
| MAPdot Threshold (kPa/s) |
70 |
| Accel Time |
200 |
| Taper Start RPM |
1000 |
| Taper End RPM |
5000 |
| Cold Adjustment (%) |
100 |
| Cold Adjustment taper start Temp |
0 |
| Cold Adjustment taper end Temp |
60 |
| Deceleration Fuel Cutoff (DFCO) |
"OFF" |
|
|
| AFR/O2 |
|
|
|
| Sensor Type |
"Narrow Band" |
| Algorithm |
"Simple" |
| Ignition Events per Step |
16 |
| Controller Auth+/- |
15 |
| Only current above (AFR) |
9.0 |
| And correct below (AFR) |
19 |
| Active above Coolant (C) |
50 |
| Active above RPM |
1000 |
| Active below TPS (%) |
70 |
| EGO delay after start (sec) |
15 |
|
|
| ENGINE PROTECTION |
All Off |
| FLEX FUEL |
All Off |
|
|
| VE (Volumetric Efficiency) TABLE |
Use "Table Generator" under TOOLS menu with the
following: |
| Engine Type |
"Naturally Aspirated" |
| Idle |
700RPM - 35MAP |
| Engine Redline |
5000 |
| Peak Power |
100hp@4400rpm 100MAP |
| Peak Torque |
145Lbs-ft @ 2000 100MAP |
| Engine Displacement |
149.3 cu.in / 2447 cc |
| ("Generate" & "Apply") |
|
| Multiply VE Value by MAP ratio |
"Baro" |
| Multiply by value of Stoich |
"No" |
|
|
| SPARK TABLE |
Not Used |
|
|
| AFR (Air Fuel Ratio) TABLE |
"Generate" & "Apply" as for VE table |
|
|
| SPARK MENU: |
Not Used |
|
|
| STARTUP/IDLE MENU: |
|
|
|
| Cranking Settings: |
|
| Cranking RPM (Max)(RPM) |
400 |
| Flood Clear Level (%) |
80.0 |
| Fuel Prime Duration (Sec) |
3 |
| Injector Priming Delay(Sec) |
1 |
| Cranking Enrichment Taper Time |
0.5 Sec |
|
|
| Cranking Advance Angle(Deg) |
5 |
| Cranking Bypass |
"Off" |
|
|
| PRIMING PULSEWIDTH: |
Not Used (Yet) |
| WARMUP ENRICHMENT |
48 - 110 |
|
59 - 100 etc |
| AFTER START ENRICHMENT: |
"Not Used" (Yet) |
| IDLE CONTROL |
"Not Used" |
| IDLE ADVANCE SETTINGS |
"Not Used" |
|
|
| ACCESSORIES MENU: |
|
|
| Fuel Pump: |
| Fuel Pump Pin |
"Board Default" |
| Fuel Pump Prime Duration |
3 sec |
|
|
| Tacho Output: |
| Tacho Output Pin |
"Board Default"
|
| Tacho Pulse Mode |
"Match Dwell"
|
|
|
This chapter will inevitably be extended and/or amended with
experience - bitter or otherwise.
|
