Volvo RPM synchron

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curiouskb

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Is there automatic engine RPM synchronization for the 2014 Volvo D6(twin engines set up) with EVC? I cannot find any switches or indicator lights for this function on the Volvo throttle control and the local Volvo agent says it is automatically incorporated. If so how can it be turned off? Any advice from Volvo owners much appreciated. Thanks.
 
On mine ( 2004) it was just a blue led. It came on automatically at about 1200 rpm if the throttles were in a broadly similar position. I don't recall it could be switched off, but moving the throttles to different positions will in effect turn. It off.
 
AFAIK: yes; there are none; it switches itself "off" at low engine speeds to accommodate manoeuvring, thus "on" at higher engine speeds. A key advantage (or it's purpose) is removing fatigue-inducing "hunting" or "beat frequency" sound arising from multiple sources operating at very similar speeds. Not sure why you might want to turn that off!
 
No, but i cant see it being much different.

The idea is that as soon as the engines are generating any half decent amount of power they are synchronised. Logically this rev limit will probably change by engine size as bigger engines rev lower. I would imagine that they still have the little blue light so try it and see!
 
curiouskb said:
Is there automatic engine RPM synchronization for the 2014 Volvo D6(twin engines set up) with EVC? I cannot find any switches or indicator lights for this function on the Volvo throttle control and the local Volvo agent says it is automatically incorporated. If so how can it be turned off? Any advice from Volvo owners much appreciated. Thanks.
Click to expand...

One the D4/D6, and all newer fully electronic engines with EVC, the synchronisation is automatic. The engines will sync rpm as soon as they go above 800rpm in gear, and will keep sync until 90% of full throttle, as long as the levers are within 15% of each other. RPM sync is listed as +/- 50rpm, but in reality it is much closer than that.
 
What a cracking idea.
I have old mechanical injection & control engines without this feature.

I spend ages getting them just right so there's no asynchronous drumming, then a bit of weed or whatever slows one engine slightly and I have to adjust - then I have to slow for moored boats, then something else.

It's become quite an art, but the slow (or fast) drumming really bugs me and I have to stop it.
Clever stuff that the EVC does it for you. Someone's really thought about that. Good design.
 
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