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Originally Posted by desmo11
Gents,
Would any of you be kind enough to give me a run-down on MV ECU's?
I know that the initial bikes (circa 2000MY) had Marelli 1.6M ECU's, is that the case for all production to date?
Also would anyone have a STOCK MV chip that they would be willing to part with or loan to me?
Thanks!
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Until the Senna 1000 and F4 1000R which has a Marelli 5SM ECU. Here is some marketing lit on the change:
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The electronic engine management system features a series of important innovations starting
with the new Magneti Marelli 5SM system that replaces the previous 1.6M.
This system is much more compact than its predecessor and if fitted with a FlashEprom
memory unit. The 5SM phase sensor works in concert with the exhaust camshaft making sequential
injection possible. On previous generation machines, such an arrangement was unheard of. Each
cylinder has been supplied with an individual “plug top” coil with consistent improvements in terms
of engine output.
The Magneti Marelli 5SM ECU manages the widely acknowledged EBS system
(Engine
Brake System) that is fitted to MV Agusta engines for controlling torque under deceleration. The
concept is based on a solenoid-activated by-pass valve on cylinder N° 2 intake duct. The by-pass is
situated downstream from the feed throttle that has a suitably shaped air intake. This device allows
cylinder N°2 to produce torque even under deceleration (when the feed throttles are closed) thanks
to a signal sent by the Marelli ECU.
Looking at the diagram, the advantage in terms of engine braking at high and medium
engine speeds is self-evident. It is also very clear that the engine management system could allow
more demanding riders to adjust and optimise engine braking at different engine speeds to suit their
individual riding styles.
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