I've had similar issues on a few Waukeshas - In most cases it was faulty plugs. IMHO the pressure was too great for the plugs to overcome so the ignition of the
air and fuel was not properly timed.
Or too high charge air temperature causing pre-detonation.
As catserveng says, your throttle...
I work on the Waukesha Engines, Jenbacher and Waukesha is now owned by Innio,
On all the Waukesha Engines I have work on and to my understanding of Natural Gas Engines, you have Carburetor that mixes your air and fuel, this is either
an Impco or Deltec carb. In either case, it is common that...
CWB1 - I just read the literature taking into account your description above, it all makes sense now, Thank you very much for your excellent
explanation.
Dan
VE1BLL - Yeah, that's my understanding of it at least. Now, I could be completely wrong about this. I'm still learning.
CWB1 - So you are saying that the LHV and HHV are assumptions, and the S makes it a standard assumption?
I feel like I'm missing something here. xD
I thought about the Super Lower heating value too, but LHV is not a unit of measure as such, The way I understand it is that LHV and HHV etc. are terms for a type of measurement. the measurement is in BTUs, but
depending on whether or not you take into account the energy needed to evaporate the...
Hi Everyone,
I came across the abbreviation SLHV, does anyone know what the "S" stands for?
This abbreviation is used when talking fuel and heating values - I like to think I understand the HHV, LHV and LCV,
I just cant seem to find anything on the "S".
Thanks guys.
Hi jgKRI,
I located the Blade in the exhaust line, about 1 foot downstream from the Turbo.
I see your point on having something break off from the inside of the engine - it sounds a bit scary to me, I ran a borescope into all of the cylinders, and did not see anything, there was also
no damage...
jgKRI,
Yeah. Im pretty sure that the blade off of the compressor wheel is what caused this. I did a compression test on all cylinders and everything is within specs.
here are the pics you asked for
Hi Guys, so here are some more pictures that should explain your questions.
Durablack2 - unfortunately I was not around when this happened, but another Tech of mine told me there was a small fire around the turbo ( I would assume from the oil spraying everywhere) and then, yes, oil everywhere...
Im no expert, but sometimes clicking noises can be caused by a leaking exhaust gasket. Im not familiar with this engine, but a loose
cam chain Tensioner would be worth looking at.
By the way - notice the rubbing marks on the trailing edgedes and the ~ 1/4" crack on the blade on the compressor wheel and the
missing blade on the turbine wheel. I did recover part of the missing blade.
Turbomotor,
These are the only pictures I have - the bearing looks like it just broke right off - could not see any discoloring on the bearing, I dont know about the shaft.
My theory is the bearing broke off causing the damage you see in the pictures.
Hi Guys,
I know I don't post often, but I really appreciate everyone's effort to help others.
I ran into a problem with my Turbo the other day - the bearing just snapped right off.
Does anyone have any idea why that would be?
For the first time in my 5 years dealing with Waukesha Engines I actually found a legit Tech support team with WPI -
I described my problem and I was told to check for "weak Ignition" as Theblacksmith says. They were pretty certain it had nothing to do with the plugs that I use at all.
I am...
Hemi,
Yeah, my book just says to clean and regap the plugs - it didnt change anything, but changing out the plugs cleared the fault.
Throttle and wastegate are all operating as they should - throttle is electronically controlled while the wastegate is mechanically.
I get no check engine lights...
Hi guys,
I have a Natural gas engine made by Waukesh that keeps detonating.
I have tried cleaning and regapping the sparks this didn't help. I then replaced the sparks and the engine ran good for about 500 hrs. then it started detonating again - I found
a sticky valve on cylinder #2 so I...
Gruntguru:
Alright, that makes sense. So if I check my O2 and I read 7.8% at pretty much all loads except from idle or no load would that, then, mean that I have varying fuel and oxygen?
Hemi: I have contacted WPI regargind the a "derating" table, and waiting for an answer. I am certain the engine does not compensate for humidity - there are no sensors like that. I would say it is a "free float" as you call it. Im sure the engine also can operate within a certain limit.
I...
Gruntguru.
7 percent is quite a bit. How did you arrive to that number? I've been looking around but haven't been able to get any literature on the subject.
7% is also only about half of the power loss I seem to be experiencing. any other ideas?
Thanks
