Micro CoGen.

Prime movers, diesel and gas engines => Changfa/Redstone/Chinese diesels => Topic started by: veggie on November 29, 2011, 09:02:17 PM

Title: How to make your Changfa type engine REALLY QUIET !
Post by: veggie on November 29, 2011, 09:02:17 PM

Enclosed Chinese diesel.
http://www.youtube.com/watch?v=9rfgOBi7vmE (http://www.youtube.com/watch?v=9rfgOBi7vmE)
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Tom Reed on November 30, 2011, 10:39:08 AM
That works! He needs to do some work on his battery box though.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: rcavictim on November 30, 2011, 03:37:01 PM
There is a lever on the side of the valve cover that when moved makes the engine really quiet.  :D  For the newbies,that was a joke.  The lever to which I refer is the exhaust valve lift control.  This is used to keep the engine from running.  Har har.

Hmmmm, there are enough folks here with noisy engines now who could benefit from an effective silencing system.  Perhaps I should develop one.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Ronmar on November 30, 2011, 05:29:14 PM
Ye old generator pit... Would like to learn more about what appears to be an exhaust heatex.  Lools like a pain for maintenance, kinda like working on a sailboat main diesel.  I was wondering to myself the other day how the S1100 genset would run fit into an old chest freezer, setup with the door on the bottom so the whole box could be lifted clear for maintenance...
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: rcavictim on November 30, 2011, 06:14:42 PM
Quote from: Ronmar on November 30, 2011, 05:29:14 PM
  I was wondering to myself the other day how the S1100 genset would run fit into an old chest freezer, setup with the door on the bottom so the whole box could be lifted clear for maintenance...

That's not a Bad idea!
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: mike90045 on November 30, 2011, 06:51:59 PM
All that nice open cell foam, and diesel mist.....
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: rcavictim on November 30, 2011, 07:04:55 PM
Quote from: mike90045 on November 30, 2011, 06:51:59 PM
All that nice open cell foam, and diesel mist.....

Good observation.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: cognos on November 30, 2011, 08:27:09 PM
Not to mention, with that box in a hole in the ground like that, after a good rain, one might end up with a diesel powered boat...
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: veggie on December 01, 2011, 06:45:30 AM
How does he change the oil?
Drain plug looks totally inaccessible.

Veggie
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Ronmar on December 01, 2011, 07:50:54 AM
Quote from: veggie on December 01, 2011, 06:45:30 AM
How does he change the oil?
Drain plug looks totally inaccessible.

Veggie
Suction gun/syringe and a long pipe thru the dipstick hole?
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: vdubnut62 on December 01, 2011, 11:31:40 AM
Quote from: cognos on November 30, 2011, 08:27:09 PM
Not to mention, with that box in a hole in the ground like that, after a good rain, one might end up with a diesel powered boat...


Sort of like my thoughts, except I was thinking submarine. ::)
Ron
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: rcavictim on December 01, 2011, 01:47:58 PM
What you can't see from the video is that all the ground surrounding the generator is on a complicated system of hydraulic jacks which can drop the mean surface level of the earth in that location bout 3 feet to allow easy access to the generator.  The scope of this silencing operation is truly massive.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: playdiesel on December 01, 2011, 07:04:39 PM
I quieted ours down by adding 50' to the power cord. ;D
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Ronmar on December 01, 2011, 09:37:12 PM
Quote from: playdiesel on December 01, 2011, 07:04:39 PM
I quieted ours down by adding 50' to the power cord. ;D

But didn't that make it noisier for the neighbors?:)
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: rcavictim on December 01, 2011, 10:13:12 PM
What I tried once was to hook the generator to my dish and beam the excess noise into outer space!   8)
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: playdiesel on December 02, 2011, 06:07:44 AM
Quote from: Ronmar on December 01, 2011, 09:37:12 PM
Quote from: playdiesel on December 01, 2011, 07:04:39 PM
I quieted ours down by adding 50' to the power cord. ;D

But didn't that make it noisier for the neighbors?:)

Ya, but that's a plus too, dont like them. 8)
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: AdeV on December 02, 2011, 02:08:28 PM
Must admit, my first thought when I saw the heading was "Yeah, turn it off, that'll quiet it down a bit!"

It's not bad, but if I were to enclose the engine, I'd want NO sound escaping, which is quite a hard thing to achieve whilst maintaining maintainability, safety, engine cooling, etc.

Reckon I'll just get used to my Lister put-putting away. None of this rev-it's-tits-off chaaagfoo nonsense  ;D
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Tom Reed on December 02, 2011, 05:00:53 PM
Now that I have one of each, I'm trying to decide which one to make the primary back-up source for when the sun doesn't shine. The engine room is located right next to the house. The extra power and electric start would be nice, but again I do like that chug, chug sound of the Listeroid.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: playdiesel on December 04, 2011, 06:44:36 PM
Actualy our gen shed is about 75' away from the house and behind the shop building. We cant hear it when the windows are closed . Ours is strictly back up power.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: pekkap on December 07, 2011, 08:51:50 AM
that seems nice way to silence rattling things like changfa. or mother in law.. i was thinking to use concrete plates around changfa in my excavator project. and also sound insulation fabric inside to stop my teeth falling out. it makes good counterweight too.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: Tom Reed on December 07, 2011, 10:55:07 AM
Distance works, but is a drag at night in the rain or snow! No remote start/stop on a listeroid. The generator at my previous house was 250' away. You could barely hear that Onan RV generator.
Title: Re: How to make your Changfa type engine REALLY QUIET !
Post by: mbryner on December 08, 2011, 09:00:06 AM
QuoteDistance works, but is a drag at night in the rain or snow!

Yeah, but I wouldn't want my listeroid in the house!