Members Page/Bmw No Vanos V Eight - VEMS wiki www.vems.hu

This topic has started as request assistance with buy to choose all options correctly.

However I will need probably more assistance so would like also share gained information with others to help with further installations.

Goal: Fit VEMS to control BMW M62B44(no Vanos) modified engine but still natural aspirated.

hint: when installing, make it separate page for each project (to avoid disambiguaty)

Stock M62 parameters:

Idle : ZWD "idle speed is controlled on the M62 engine by means of a two-winding rotary actuator"

Stock signals:

Outputs
- Coil direct to spark, have a build in IGBT drivers(8 totally)
- Injectors are High impedance/ High-Z
- Idle valve (ZWD two-winding rotary actuator)

Target M62 parameters:

NA
Stock VR Crank sensor
Stock HALL Cam sensor
8x Stock Passive Coils
Stock Idle control (13 41 1 733 090)
- is that dual solenoid ?
ITB from S62 also with injectors High-Z
Alfa N
Intake air pressure
Electric accelerator pedal module (35 42 6 786 281)
Drive by Wire actuator from S62 (12 72 7 831 246)
- CAN-bus type like S65/S68 ?
- or traditional dummy (non CAN-bus) to drive with VEMS Bridge Output driver ?
2x wide band
2x EGT
2x Knock
Flat shift

Signals:

Dominik's Mercedes V8 engine (sounds like this section should move to separate page):

can we implement 8 high current [ignition drivers] => those would be able to control 2 ignition coils each.
can we add 8 further ignition drivers to to the 8 ignition outputs (2 parallel on each output)?

yes, Either

order with 0 IGBT (8 logiclevel), and order
[3 clamping plates]
and 1 [insulatorsheet] (3 lines)"
- this allows using an external heatsink to mount 16 IGBTs in 3 lines

order with 8 IGBT , and order comment: "please wire the 8 internal LOGICLEVEL IGBT gate-drives to flying loom EC10 connector, and add 2 clamping plates, and 1 insulatorsheet (2 lines)"
- this allows using an external heatsink to mount 8 IGBTs in 2 lines

Alternatively request "200 mm long flanged box".

Either to fit 16 IGBT-s inside ECU, or 2 complete VEMS ECU-s (also provides redundancy)

2 ECU would fit siamese in 100mm long extrusion (one to front and one to back: with external MAP sensor)
- or if driving total 16 passive ignition coils (from 8 or 16 ignition IGBTs, either from 1 or 2 ECUs) the 200mm => added surface provides more "thermal room" for slightly longer dwell (during long rally sessions, under suboptimal conditions, eg. >80C).
- with careful installation and measurements + testing: possible to drive 2*8 passive igncoils from 8 IGBTs even from standard VEMS ECU : too high dwell (configured) would result in insufficient cooling situation