Try a softer insulation material , mount the pump outside in a insulated box . Make sure you use thick material. Do not mount it on the case. The rubber you used is to hard and as somakes little difference. Good video though, shame it was not as good as you inticipated it to be.
Thanks for the thought provoking video. I think much of the noise it due to the pipes tapping on the case and other rattles. I have a similar heater and I love it iny small van I got some bitumen car body sound deadening sheet and stuck it to every flat surface I could find within the case. Also wrapped the pump in it like you did. I did away with the rubber bracket and wrapped the pump in strips of Karimat foam and just jammed the encased pump into the space. I put this soft neoprene like foam sheet in all places where pipes touched the case. It's a lot quieter and the ticking is a soft dull tone. Acceptable but I'm still looking for ideas. Potting the pump in silicone is my next idea but I'm looking for examples first. Nice video thank you for your efforts.
I did this using roof and gutter neutral cure silicone. It was a layer about and inch thick around the pump body, once cured clamped in a box similar to yours and its barely audible. Problem solved!
Great idea using the box but if you had used acoustic wadding or quilting rather than hard rubber it would improve the sound reduction hugely. In the example here the pump sound transfers easily through the rubber to the outside box and onto the outer heater casing so not much if any change. Enjoyed the video and thanks for posting
Silicon works well. It's possible to run these with no pump, just needs one to start or there's an error code. Measure the flow properly and it's no problem, totally silent.
My Dad had some success quietening the noisy pump by wrapping it in neoprene foam, then dangling it from small rubber bungies which helped isolate it from the heater body, I mean it still clicks but not much of the sound makes it from the pump to the rest of the heater. The weird thing is, I've got a Japanese paraffin heater which uses a similar solenoid dosing pump, but for some reason that makes no discernible noise at all.
I have been meaning to pick up some duct seal, the stuff like heavy duty modeling clay. I think embedding the pump in a pound of this would provide the mass and absorbtion to quiet the pump.
The silencer has a hole in it to let out condensation so should be rotated 90 deg to let tit drain. It will also let out exhaust gasses. Therefore, place the silencer outside and live longer
What I did was bought a silicone mold making kit. One that xxx toys could be made of soft. An taped the hose ends. And the plug part. An just got a Tupperware container. And encapsulated the pump. Than with a razor blade. Extracted to my tape areas to expose the plug an each hose end. Plugged it up to the hoses an plug. An just stuck it in the heater an closed it up. I didn’t worry much about the pump getting to warm due to its electrical workings or what not. Due to when it’s used it’s cold in general. An never has an issue. So it’s kinda floating in its lil spot inside the heater inside of a soft silicone block
Try closed self foam insulation like you use in HVAC. It’s black in color and you can get it in different sizes. You should be able to simply wrap the insulation around it and zip tie it to keep it closed all done, faster and cheaper.
From what I do know about soundproofing. You may have two issues . One is the rubber you used is probably still allowing the vibration from the injection pump transfer to the outer metal case . The other issue is the plastic plug is touching the plastic housing when you put the lid on , that allows the vibration to transfer to the plastic box . Also same with the hose ends . Might I suggest trying to use sound dampening materials for example put it in a box that is twice the size of the plastic box and use cardboard egg cartons on the inside walls of the box then find a block of soft foam to mount it too inside the box , run the hoses through that box without touching the sides of the outer box but through some soft foam . It won’t fit inside the metal container but it should still be as quite or better .
You need rubber mounts from the box to the sheet metal. the sound is amplified by the sheet metal try not to mount the box with bolts just hanging and check for noise level.
To start, buy an upgraded fuel line kit, run the pump in a vertical orientation. As long as the pump no matter what the insulation is affixed to a solid percussive object you will hear it. The rest is easy.
Try a Decibel meter at a set distance before and after. Try encasing the pump in a softer medium ie. foam rubber. Bear in mind any hard surface in contact with the sound source will transmit sound. interesting video though.
The back panel of the case that the pump is bolted to is vibrating causing the noise. My pump is attached to the frame of my ford e250 with the rubber holder. She's quiet as a mouse.
Love your work on making this unit quieter, been wearing ear plugs! I see wehave the same unit. Any tips on how to pair it with the remote? Finding the included instructions a tad confusing!
my theory , the softer the materials you use to wrap the pump it dampens the clicks (neoprene) and a hollow or light hollow or less solid materials for the box (foam).
Your exhaust extension may not be safe. I don't think you're supposed to extend the small pipe so far. It would probably be better to increase the diameter to run farther than the stock exhaust pipe length.
Buy an Eberspacher pump, in the blurb for our heater it describes the pump as “near silent” ours is mounted underneath the van and I can honestly say I’ve never heard the pump either Inside or outside the van. Hope this helps someone.
@@scousebikers I think the pump is alright it’s the circuit board in the Chinese heaters that is not sealed against water and hence it’s vulnerable to water ingress.
@AJ-qn6gd oh yeah that's no problem that's inside I am just rerouting fuel lines tommorow hopefully was using a auxillier fuel tank but it started leaking inside the van what about the connection to the pump surely that's not watertight??
@@scousebikers the electrical connection should be an automotive quality connection with a small rubber seal in it and snaps together like engine sensor connection not heard of any problems with the pumps, mine is under the van and no issues whatsoever.
Encase it in silicon sealer and use silicon to stick the box to the heater. But be careful with the electrical contacts as silicon setting gives off fumes which cause steel to rust so I would wrap the plug with insulation tape. Or encase the pump in black dense foam two halves shaped to fit the pump snugly
That’s exactly what I did. Bought a really soft silicone that I looked up could be used for xxx toys. An a small Tupperware. Taped up the hoes ends an plug. Encapsulated it completely and with a razor. Carved out to the important areas. An just hooked it up in the heater with it floating in its silicone block
How about this.... Yongle Elliott ET950 Noise Reducing Cancelling, Cloth Adhesive Friction, Wire Harness Fleece Tape, High Temperature 220F, 3/4" X 25M FS
Nice try though, well done. One day someone will have a solution and we'll all be happy... Evolution of the Chinese heaters haha.. Thanks for the video
I have one and a buddy of mine has one and can't get over the thumping so he put it in a coffee cup and sprayed GreatStuff to fill the cup. It works pretty good for the effort. Id say 60% reduction. Pulling it off the back panel has to be a tremendous improvement.
Watch this video and notice where the fuel pump is installed (outside of the case) and an improvement on fuel lines. In this video you can't hear the pump at all. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gNKTZosL6d8.html
A word of warning you have fitted your exhaust muffler indoors, these are poorly assembled and leak carbon monoxide fumes plus there is a moisture drain hole.
the only way to beat this is to hang the pump from a frame on fishing braid. may I add that the exhaust recomendations are no longer than 2 meters in length. and the green fuel line puts extra strain on ther pump as it gives and expands each time the pump pumps making the fuel injection less effective, almost everyone replaces it with the hard 2mm core nylon fuel line that doesnt expand as the pump pumps. There are also no fuel line clips on the fuel hose another saftey issue to note. the green fuel line has been known to perish and split esspecially around the exhaust outlet, this could cause a fire. you will also need a fuel filter installed before the pump, most heaters come with one. as you have it set up I honestly wouldnt put it a family members house without at the very mimimum doing these saftey upgrades. and please make sure you install a carbon monoxide alarm. some titanium exhaust wrap double layered may also be advantageous to keep the hot exhaust from damaging the fuel line or to protect the hands of little ones if they should grab it? it is available on Amazon.co.uk or ebay. you can also searh either site for the Diesel Heater fuel line upgrade kit it costs about £12.00
This video may be of interest to you, i've seen many suspend pumps like this using strong elastic and it does make quite a difference, the only problem is you'll have to mount the pump outside the case. hope this helps in some way ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rP3FOPqtINg.html
George M ..I'm researching tricks for when I buy a diesel heater for my small caravan, (17ft.Oasis)and when I saw your link, wondered if it was the one I had already watched, and it was. I think I will settle on this one (in your link) as it seems to have the most feasible explanation for getting rid of the vibration noise. The elastic suspension shouldn't transfer any vibrations and the insulated box should get rid of the rest of any noise. I'm thinking about installing it in the front boot of the van for easy access (I'm partially disabled) with a removable fuel tank so as not to risk spilling diesel, and having fuel filter and pump where it will be easy to change when necessary. I could even mount the pump and filter on the A frame of the van, out of the way.
