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[dodo]

sal all.sunt nou pe forum si am o mare problema.am un urs cu bloc de 2.7 cutie si grup getrag cu 1 in jos volanta usoara ambreiaj sport.are 2 delcouri si 2 bobine pt reglat avansul .intrebarea ar fi suporta un kit de turbo asa cum e sau trebuie decomprimat pt ca automat prin schimbarea blocului a crescut compresia fatade 325.merci .

[Zom]

Senzorul de detonatie (knocking sensor/detonation sensor) "aude" detonatia si poate determina computerul sa intarzie aprinderea pentru a proteja motorul. cu toate ca bmw recomanda utilizarea benzinei fara plumb, acest senzor face posibila utilizarea benzinei normale.

sfat de la ei:
"Run PREMIUM fuel with advanced ignition timing to prevent detonation and engine damage!"

daca schimbati senzorul, dar nu il strangeti bine, semnalul transmis de senzor catre computer va fi mai slab decat normal, fapt care va conduce la detonare.

Si mai departe: au facut dragutii bujii speciale pentru M5, cu senzor inclus:

This extremely high output (507PS) BMW engine runs at high speed (maximum power is achieved at 7,750rpm, and maximum engine speed is 8,250rpm) and with high compression ratio (12:1) and would in any case require spark plugs with an extremely high level of performance. However, in this case the spark plugs have also been designed to act as sensors for a highly sophisticated system which monitors combustion quality and reacts accordingly.

In addition to its normal function within the ignition system, the spark plug electrode is linked to a small independent control unit, the 'ionic current satellite', which measures the ionic current between the electrodes. This current depends on the degree of ionisation within the combustion chamber, which in turn - with the aid of suitable analysis - provides an accurate picture of the quality of combustion. The system can detect the initial stages of both misfiring and detonation, enabling the engine management system to adjust its settings on a cylinder-by-cylinder basis. Incipient detonation for example is countered by momentarily retarding the ignition.