SeBCON-µC (Stoni's electronic Boost CONtroller) - Full Programmable Boost Controller.
- The perfect choice if you want a wolf in sheep's
clothing -
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SeBCON-µC is a electronic boost controller for engines with any kind of conventional regulated turbochargers and electronic fuel injection. SeBCON makes the boost adjustable via an PWM regulated solenoid. |
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Let's have a look at the
improvements
of SeBCON-µC:
Electronic: 119 Euro |
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Electronic, Case, Cable bushing, unassembled
as shown in picture 1, if requested with soldered on 30cm patch cable
Additional accessories:
- Solenoid Pierburg 7.22240.13.0 12V / Volvo Part: 30670448, Price 60Euro
- Serial cable and SeBCON RS-232 adapter cable, Price 10Euro
Features of
SeBCON-µC:
-
Preprogrammed, Plug-n-Drive
- Easy to use, fully programmable pwm boost
controller
- High-performance, Low-power AVR® ATtiny461 8-bit Microcontroller
- RS-232 interface, free compiler and programmer
software
- Programmed in basic, free source code to make adjustments or
create/add own extensions
- Input for knock signal, uses e.g. the knock control of a BOSCH
EZ116K/EZ117K System
- Input from throttle-switch (WOT-Switch)
- Input Injector signal (Load & rpm)
- Input for other 'Load' signals, e.g. from a AMM
- Input for engine temp sensor
- Two free input/output channels (adc or i/o)
- Auto boost function for good drivability during part load
- Adaptive knock control, adjusts the boost
automatically while knocking
- Overboost via software adjustable, default is +0.15Bar via throttle
contact
- Max-Load function via software realizable
- Compact size (50mm x 100mm)
- Tweaked for Volvo B23xFT's with LH2.x systems, or any kind of
P2-regulated Turbo's with electronic fuel injection
Main function:
SeBCON works by analyzing the injector duty cycle to know always the
exact engine load. This makes it possible to provide the boost control
valve with a separate value for every engine load point. Analyzing the
injector duty cycle gives a much better throttle control then a
conventional system which gives always maximum boost, even if you
don’t need the boost. The flow of a Air-Mass-Meter is also
included into the calculation of the engine load, the weighting is 2/3
injector duty cycle and 1/3 Air-Mass-Meter signal. This mixed mode
makes it possible to get a better throttle response (the AMM is the
first device which sees an increase in airflow). There is also a binary
available which integrates only the injector duty cycle signal, this
Version is slightly smoother.
Preferred solenoids are real 3-way valves to adjust the
wastegate-pressure between 0-100%.
If there is a problem with the boost level, e.g. to much boost at
3000rpm, than it’s possible to reprogramme the box. There is a
map with boost values in % which can be modified easily. The map goes
from 1100 up to 7000 in steps from 100rpm, every step contains a
%-value which can be modified. The box can be reprogrammed with a pc
within a few minutes. But SeBCON is preprogrammed, that means
Plug-n-Drive.
Knock detection works adaptive and self-controlled. After a knock
ocours, SeBCON adjusts the boost in that way, that it will store per
every 100rpm the maximum of boost which can be run savely. If the
target boost value is higher than the as save considered value, the
save value will be used insteed. While knock ocours the boost will be
corrected 5 times per second, downward in steps to 0.010-0.015bar.
But to make one thing clear, the real knock detection must be realized
with an externel tool or by using a existing knock modul like e.g. the
Bosch EZK116 ignition box, SeBCON uses a existing signal to control the
boost - SeBCON has no own input (not at this time) for a knock sensor.
The source code is free available to make it for everybody possible to
tune up the box. The compiler and the flash software is also free
available. SeBCON has 3 more analog/digital converter free, this makes
it possible to connect some kind of additional sensors to the box.
The advantages of using the injector duty cycle for boost control:
- better throttle control
- better fuel economy
- boost proportional to throttle position
- cruise control compatible
Special thanks to
'Aimypost'
, for several new findings, testing testing testing,
make new suggestions and his help to find a good basic attitude :)
Software for SeBCON-µC:
download
Bascom Compiler - Demo version compiles 4KB of code
download
serial device programmer PonyProg2000
download the latest original binary for
SeBCON-µC (1.37 from 05.04.2010)
Documents for SeBCON:
SeBCON's Guide
NEW
Solenoids for SeBCON:
Pierburg
Catalog 'Electrical Valves' / Typ 'LDRV' are boost control valves
Boost Pressure Gauge:
BSR
turbo pressure gauge in very high quality
Knocksense Modul for SeBCON:
KnocksenseMS
If you have questions, don't hesitate to send me a private message
at
Turbobricks
(user 'Stoni') or an email to sebcon at nord-com.net
No warranty at all, use of SeBCON at one's own risk! I will exchange
the electronic if a box has a internal error which stands not in direct
connection
with an external error (e.g. wrong connected).
SeBCON ist im Bereich der Straßenverkehrs-Zulassungs-Ordnung
(StVZO) nicht zulaessig, hat keinerlei Gutachten und
ist NICHT Eintragungsfaehig. Ich bitte darum, von diesbezueglichen
Fragen Abstand zu nehmen, es ist keine Zulassung geplant!
Kauf und Betrieb der Box unter AUSSCHLUSS JEGLICHER GEWAEHRLEISTUNG.
Wenn eine Box nachweislich einen Defekt hat,
welcher nicht auf aeussere Einfluesse (falsches anschliessen) zurueck
zu fuehren ist, tausche ich die Elektronik selbstverstaendlich aus.