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2amps extra from alternator how much fuel use?
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gardenlen
New User
Jun 8, 2010, 12:00 PM
Post #1 of 8
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2amps extra from alternator how much fuel use?
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g'day team,
ok the car daihatsu terrios 2003
1300cc motor manual.
the question if a device that was going to use 2amps of alternator power was installed, how much extra fuel would the engine use to provide that extra 2amps?
and would fuel use lessen with bigger 6cyl' ad V8 motors?
tia
len
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nickwarner
Veteran
/ Moderator
Jun 8, 2010, 5:56 PM
Post #2 of 8
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Re: 2amps extra from alternator how much fuel use?
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2 amps is such a small load that you won't notice any difference in fuel consumption.
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KeystoneAutoElectrical
New User
Jun 8, 2010, 6:18 PM
Post #3 of 8
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Re: 2amps extra from alternator how much fuel use?
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If you use W x .00134=HP. and V x A=W then 2 x 14v =28W
28 x .00134 = approx .11 hp. It is a small amount of fuel, but if you had to exert an extra .11 hp on your bicycle you would hate it.
(This post was edited by Hammer Time on Jun 8, 2010, 6:19 PM)
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gardenlen
New User
Jun 8, 2010, 6:20 PM
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Re: 2amps extra from alternator how much fuel use?
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thanks nick,
that is what my non technical mind would imagine, just on another group there is a discussion and the skeptics are saying that the 2amps will use more fuel than what a particular device might save. me i got no comment about the device just the hype about fuel used for the load mentioned. the same people also added comment that using ones headlights cost fuel??? there again i tried with a car that has tacho' and all other accessories turned of then switched high beam lights on the tacho' needle barely quivered.
be interesting if there was a way to roughly calculate any fuel use that may occur, but probably hardly worth chasing.
big ta
len
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 8, 2010, 6:21 PM
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Re: 2amps extra from alternator how much fuel use?
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KeystoneAutoElectrical
Please remove all links from your signature. Advertising and links are not allowed
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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gardenlen
New User
Jun 8, 2010, 8:31 PM
Post #6 of 8
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Re: 2amps extra from alternator how much fuel use?
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thanks keystone,
outside my capacity to work that out but great answer by the looks.
len
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KeystoneAutoElectrical
New User
Jun 9, 2010, 3:51 AM
Post #7 of 8
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Re: 2amps extra from alternator how much fuel use?
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Sorry,
Is my logo ok?
Jerry
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Hammer Time
Ultimate Carjunky
/ Moderator
Jun 9, 2010, 4:01 AM
Post #8 of 8
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Re: 2amps extra from alternator how much fuel use?
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Not really. Not as long as it has a phone number in it.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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