BCM Community

Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: uemjg on December 16, 2013, 07:34:16 PM

Title: generator temp. question
Post by: uemjg on December 16, 2013, 07:34:16 PM
I have a kubota 10k generator from Wrico and is water coooled w/electric fan.  I've been wondering what is the normal water temperature for the cooling system?
Title: Re: generator temp. question
Post by: eagle19952 on December 16, 2013, 08:17:20 PM
just off-hand I'd say 185-192 is acceptable to me....
Title: Re: generator temp. question
Post by: TomC on December 16, 2013, 09:36:54 PM
I have a 10kw with 4cylinder Kubota from Powertechnology. It runs at 175-180. When it gets to 225, it shuts off. Usually 175 is closed thermostat; 185 is fully open thermostat; above 185 and your over heating. Good Luck, TomC
Title: Re: generator temp. question
Post by: uemjg on December 17, 2013, 04:53:19 AM
I'm looking for something to "add on" to my generator to shutdown when it over heats.  Anybody have a suggestion where i can get it?
Title: Re: generator temp. question
Post by: luvrbus on December 17, 2013, 05:05:49 AM
It should already have one is the shut down solenoid mounted on the side of the injection pump ?
Title: Re: generator temp. question
Post by: Oonrahnjay on December 17, 2013, 05:32:25 AM
Quote from: uemjg on December 17, 2013, 04:53:19 AMI'm looking for something to "add on" to my generator to shutdown when it over heats.  Anybody have a suggestion where i can get it?  

     There is a temp sensor on my bus engine - it closes (ie. sends a pos. electrical signal) when the engine coolant reaches 95 deg C (about 202 - 204 deg F).
Depending on how your generator is controlled, it should be pretty easy to set up a control to shut it down (NC relay that opens when it sees the signal from the temp sensor to open a ground, or a NO relay that gets pulled in to close a fuel solenoid etc.)   Unfortunately, I have no idea who made that sensor or what it's called and the company that made it is probably like every other British manufacturing company -- bought up by a Singaporean conglomerate 22 years ago and pretty much disappeared from view -- but there should be a N American made equivalent.

      (But isn't there a control like this built into your generator anyway???  There is both an overheat and a low-oil-pressure shutdown built into my Onan.)
Title: Re: generator temp. question
Post by: uemjg on December 17, 2013, 05:52:45 AM
Quote from: luvrbus on December 17, 2013, 05:05:49 AM
It should already have one is the shut down solenoid mounted on the side of the injection pump ?

I'll check later today. Before I go "chasing my tail" the temp on my wrico generator goes to 220 degrees f.  Will air in the cooling system cause this and how to fix? It has a electric fan blowing.  I have a new thermostat ready to switch out if needed.  Anything thing else unusual that would cause this?  The generator has 10 hours of run time.
Title: Re: generator temp. question
Post by: luvrbus on December 17, 2013, 05:58:28 AM
Yep air in the system will cause it those little engine are hard to burp I use vacuum it makes life easier for me
Title: Re: generator temp. question
Post by: uemjg on December 17, 2013, 06:29:25 AM
Quote from: luvrbus on December 17, 2013, 05:58:28 AM
Yep air in the system will cause it those little engine are hard to burp I use vacuum it makes life easier for me

How?
Title: Re: generator temp. question
Post by: eagle19952 on December 17, 2013, 09:24:05 AM
http://www.wanderlodgeownersgroup.com/forums/showpost.php?s=85d5f97a2115f2cdc9de99bbe036e537&p=167306&postcount=10 (http://www.wanderlodgeownersgroup.com/forums/showpost.php?s=85d5f97a2115f2cdc9de99bbe036e537&p=167306&postcount=10)


I guess they all over heat...info from Kubota excavator 4cyl hoe....I hope they are talking Celcius......after all they are metric.... ::)

The new coolant temperature gauge helps prevent the engine from
overheating by keeping you informed. Located close to the control
levers, a warning lamp lights up when the coolant temperature rises
to 115 degrees, and turns off when it falls to 108 degrees or below.
Title: Re: generator temp. question
Post by: uemjg on December 17, 2013, 10:09:04 AM
I replaced the thermostat and when I refilled the engine and radiator with coolant it burped air out.  Now I'm not sure what fixed it: the new thermostat or burping it...LOL.
Title: Re: generator temp. question
Post by: gus on December 18, 2013, 05:58:09 PM
You can check the old thermostat in hot water and find out!
Title: Re: generator temp. question
Post by: oltrunt on December 18, 2013, 06:18:30 PM
Hello All.  I spent a lot of time worring about the temp of my genny as it is air cooled (Yamaha EF3000iSEB enclosed in a below bus box).  I finally came to the opinion that the most important temp measurement was that of the oil.  Generally speaking, 220 degrees F is about the upper limit for motor oil and as long as the oil is happy the genny will keep running.  220 degrees F is not hot enough to be a problem with wiring or most insulation so as long as the oil temp stays lower than 220 degrees F all should be OK.  By using thermocouples I set my genny up to ground the spark if the oil temp reaches 200 degrees F.  So far, so good.