D40 YD25 Idle Fuel Consumption
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K
KraftyPg
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How long is a piece of string? It would vary ute to ute and vary according to heaps of other variables so even an approx figure would as accurate as a guess.
I don't use LPH gauge on my SG, I could but I don't plan on going out again until atleast Monday, so unless someone else has figures my guess will have to wait until atleast then.
I don't use LPH gauge on my SG, I could but I don't plan on going out again until atleast Monday, so unless someone else has figures my guess will have to wait until atleast then.
Mmnm, there is not that many variables, they are all going to +/- 20% of each other. The main variable would be aircond on or off.
I just need to know if it is 2 litres/hr or more like 4. I would think that with no load that it would be in the vicinity of 1-3 ltrs/hr but if someone has a more accurate number it would be appreciated.
I just need to know if it is 2 litres/hr or more like 4. I would think that with no load that it would be in the vicinity of 1-3 ltrs/hr but if someone has a more accurate number it would be appreciated.
K
KraftyPg
Guest
Each vehicle is tuned differently, each vehicle is run differently, idle revs may be different temps are different, there is heaps of variables which can easily make the figures of one look drastically different to another. Then add to the mix that the YD25 is slightly different in the ST and RX than their STX counterpart and that often KC owners report alot higher fuel usage than DC owners and you quickly see that not all identical vehicles are the same.
With a 40% (+/- 20%) swing for error I'd go between 1-5lph and guess somewhere in between given that I know mine does about 5-6 lph in a 50 zone when warm but as a disclaimer my variables may differ to others preforming similar tests.
With a 40% (+/- 20%) swing for error I'd go between 1-5lph and guess somewhere in between given that I know mine does about 5-6 lph in a 50 zone when warm but as a disclaimer my variables may differ to others preforming similar tests.
An update on this post......
The engine at idle uses about 2.5 ltrs per hr whilst the alternator was pumping out up to 60 amps into my AGM battery. Whilst this was more than a small invertor generator it certainly saves the hassle of carrying one if you just need a bit more juice in the battery for one last night camping before returning to 240volts
The engine at idle uses about 2.5 ltrs per hr whilst the alternator was pumping out up to 60 amps into my AGM battery. Whilst this was more than a small invertor generator it certainly saves the hassle of carrying one if you just need a bit more juice in the battery for one last night camping before returning to 240volts
Who said anything about fully charging?? I believe the comment was about extra juice to get you through a camping trip until 240volts can be acquired, with that you of course can use your charger correctly and fully charge the AGM.
You will need a lot of solar panels to run 60 amps into the battery for an hr and it will be a hell of alot dearer than 2.5 ltrs of diesel
You will need a lot of solar panels to run 60 amps into the battery for an hr and it will be a hell of alot dearer than 2.5 ltrs of diesel
K
KraftyPg
Guest
Handy information crowe, must admit I forgot about this thread and therefore forgot to check the fuel usage at idle.
I think Sparra's point is still a valid reminder - particularly for those readers who may be looking here and may think that they can fully charge their battery in an hour and be set to go again. At best the alternator will charge a battery to 75% or so and we all need to remember that if we're depending on the power. If it's just for a few more hours then of course it'll be cool - but some readers might be wanting power for longer.
I'm not sure that the alternator can put out 60A at idle. The service manual's chart for the D40 alternator looks like this:
More than 33A @ 1,300rpm
More than 105A @ 2,500rpm
More than 122A @ 5,000rpm
That would imply that the output at idle (approx 750rpm, mine idles between 742-748rpm at the moment) would be much lower, so if you're depending on getting 60A from it, you might find it coming up short.
Still, even at idle, it is going to pump something out - so for anyone that wants to rely on their alternator to charge a battery, don't be too concerned if it takes a little longer for the battery to charge. It's a handy technique to use - so thanks for pointing it out!
I'm not sure that the alternator can put out 60A at idle. The service manual's chart for the D40 alternator looks like this:
More than 33A @ 1,300rpm
More than 105A @ 2,500rpm
More than 122A @ 5,000rpm
That would imply that the output at idle (approx 750rpm, mine idles between 742-748rpm at the moment) would be much lower, so if you're depending on getting 60A from it, you might find it coming up short.
Still, even at idle, it is going to pump something out - so for anyone that wants to rely on their alternator to charge a battery, don't be too concerned if it takes a little longer for the battery to charge. It's a handy technique to use - so thanks for pointing it out!
