Slow Speed Diesel Engines > Changfa Engines
Yanmar chp
saba:
By luck I have some time on my hands, I like to replace my 6-1 start o matic chp thats giving to much vibrations to use it indoors for one based on a yanmar TS 105.
Yanmar I bought I while ago as a genset 5 kw, to start with a good base I opened it for a quick peek inside. Turned out piston ran a bit hot, liner just needed some honing. To start off "new"I ordered new piston and liner with some gaskets from sunity taiwan. I think the set has nearly no running hours just lack of cooling water.
I scored a silent box for a small marine generator, brand new still in plastic, it should just fit snuck inside the box.
I like the lister 10 times better but it's like having a horse like a pet in your house, the yanmar more being like a hamster.
I'll try to post progress reports, it will not go fast due to more important stuff eating time.
I was pretty far with automation on the lister, arduino current measuring temperatures flow coolingwater. So hopefully I can just mount it to this one without to much trouble.
Need to think about some exhaust system with heat recovery absolute no noise and no dripping of condensing exhaust fumes at places you don't expect/want.
Thinking of putting the silent box on a raised frame and doing my exhaust 'scrubber'underneath.
I might need to order a new pully for the electromotor, it says 2400 revs max for the yanmar and that should give 1510 on the electromotor.
Yanmar has a throttle handle stop start run, I will replace it with a servo should also give me the ability to in/decrease power.
Electromotor is a dahlander two speed 1500 or 750. The tag plate was not there when I bought it but I think it is at least 8KW by the look at the size. The lister I always started on low revs and when it was running I would pop the breaker untill it reached 620rpm and then switch to the high rpm breaker.
If you 'drive'an electromotor you can use it as a generator.
For example if you read the tag and it says 3kw and 1470rpm, then when you dive it to 1530 you will generate 3kw.
To be continued,
Bernhard
veggie:
saba,
Interesting project. I am currently building the same thing using a Changfa 175. A physically smaller system than yours.
The Yanmar should run quite smooth since these engine types have internal counterbalance shafts.
Having an enclosure for the system will certainly help you get control of mechanical noise.
I have not yet found a robust throttle servo to drive with my Arduino controller. I have several plastic units from ebay (with metal gears) but I fear they may not be reliable enough. What unit do you use?
Veggie
saba:
DS3218MG
From Ali express it feels strong should pull 20kg. I haven't tried it yet but I will.
Bernhard
saba:
I still need to figure out something nice looking and functional to pull the valve lifter. I see your blanking plate has a bit more mass then mine, bit afraid mine is to flimsy and will leak. Will post some more foto's later today.
Bernhard
veggie:
I used 3/8" (10mm) steel plate for the blanking plate.
This gave me enough material to cut pipe threads for the connections.
The pipe fittings screw right into the plate.
The inlet and outlet are different to facilitate convection.
-Outlet fitting takes water from the top of the water jacket (right at the blanking plate). The highest point.
-Water return connection has an extension below the plate which delivers cooler water to the bottom of the cooling chamber.
I intend to use an "open" system which is vented so I do not expect any pressure to build. A high temp switch is necessary to kill the engine if the temperature approaches dangerous levels due to a heat exchanger pump failure or a radiator fan failure.
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