SeBCON-µC (Stoni's electronic Boost CONtroller) - Fully Programmable Boost Controller.
- The perfect choice if you want a wolf in sheep's clothing -
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: 99Euro |
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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: you should see the sebcon1 flash video you should see the sebcon2 flash video
NEW
- 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 (1.30 from 02.03.2010)
Documents for SeBCON:
Installation and Adjustment Guide for SeBCON
German manual V1.0 for SeBCON-µC
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.
The only address you will ever need: Turbobricks.com