Civic EPES: Alternator Delete Project (with additional lithium battery...)

[fastegg]

Hey daox... how do you put your cars in your left hand column under your signature ?

[fastegg]

My car is a '98 Lexus LS400 4-litre V8.. If I was to run an electric water pump, electric power steering pump, electric fan... those things coupled with fuel injection pump, ignition, stereo, ECU's for everything, other power consuming do-dads which the car is full of... how many amps per hour am i up for ?
... My guess is about 85 amps. .. ... .... .....

*** and I reckon 14 volt batteries, so when they started running low, the volts probably, hopefully, won't drop below 12 volts...

... I wonder how many batteries I'd need ?

.... and a decent charger to charge them each night.... possibly even a 3 phase charger...

[Frank Lee]

IMHO the alt delete strategy works best when you can reduce the loads down to near nothing.

[fastegg]

What's IMHO ? it's not in the glossary..

[Frank Lee]

In My Humble Opinion

[3dplane]

Originally Posted by fastegg

My car is a '98 Lexus LS400 4-litre V8.. If I was to run an electric water pump, electric power steering pump, electric fan... those things coupled with fuel injection pump, ignition, stereo, ECU's for everything, other power consuming do-dads which the car is full of... how many amps per hour am i up for ?
... My guess is about 85 amps. .. ... .... .....

*** and I reckon 14 volt batteries, so when they started running low, the volts probably, hopefully, won't drop below 12 volts...

... I wonder how many batteries I'd need ?

.... and a decent charger to charge them each night.... possibly even a 3 phase charger...

Fuel pump: 9-10 amps. (car I tested was a newer Caddy DTS)

Electric water pump: Maybe 3-4 amps. (my auxiliary pump draws 0.9A)

Electric P/S pump: Depends on how it's done. Example the EPS motor and controller(3 phase) in a Pontiac G6 is rated 65 Amps max. Think parking lot maneuvers standing still,on the brakes turning steering wheel like most ladies do it.(my apologies to the ladies who let the car roll when turning the steering wheel!)
A LOT less draw when driving at speeds!

Radiator fans: (guessing) 5-20Amps depending on speed.( I could test one for you if you wish!)

Blower fan: (my car) 9 amps on max speed 2 amps on lowest speed.

ECUs: (guessing) 2-3 amps max.

Low beam headlights: (my car) 8.5 amps

Stereo: You really going to use one?

85 amps is a very very high guess in my opinion.

For batteries I just run 3 regular car/truck batteries parallelled for roughly 180 A/h capacity. It is plenty for my 60 mile commute to work and back. (Lights on for the way back).

And like Frank said reduced electrical load makes it much better! ( LED running lights,no stereo blasting etc. )

Barna

[fastegg]

The sound system in the Lex is one of the best audio systems ive ever heard.... it's one of the things I love about driving it... Its just ***SUPERB***
so, add on 3-5 amps without question...
Here's what i thought:
Water pump: .............8 amps (off the Davis Craig web site)
Electric fan: ............ 11 amps (off the DC web site)
Power steering pump: 12 amps (off some web site)
Fuel injection pump: 25 amps (that was a guess considering the pressure
it Runs at... 20,000 psi ... a guess...)
All the ECU's: ............10 amps... and there is an ECU for everything... even
the mirrors have their own ECU
Ignition: ...................15 amps... a guess
Audio:....................... 5 amps
= 86 amps
Well I over estimated everything... put 2 or 3 of these 450 amp lithium brutes in the boot, run 00 or 01 cable...
Just guessing, it might pick up 10-15% more RWHP and after tuning the fuel map(when i had it on the dyno 209rwhp, the guy said it was rich everywhere)
Ive got a digital fuel adjuster so (i'm guessing) I'd lean off the closed loop...
I may get a few % better FE.... and if and when Ive got $1,000 to splash out and purchase an Aquamist HFS-6.. a fully mapable and programable water injection... you can even really go crazy and put an engine together and go up on the compression from 10:5-1 to 12,13 or 14:1... it can be tuned to run full time WI.... I know that's going right over the top but if ever i had the time and money.... there's a big handfull of torque to be had with WI and hi-compression....
But.. getting back to the 'no fanbelt' issue... I really like it... having a semi-electric Lex....apart from the 25%+ better FE & more power, quiter & smoother... It'd be heaps'o'fun... getting power for free... I live in a 7 storey block of apartments so plugging into the powerpoint on the underground car park in affect costs me nothing....
so yeah, it's all quite achievable....
.... More Power.... Better Fuel Economy..... it's got a nice ring to it...
COST: electric water pump $300...electric fan $150...electric PS pump $500
so say $1,000 for the 3 electric pumps...
Big kick arse Lithium batteries $500 each or
Two or three 450 amp 14 volt AGM lead batts... $300 each
Desent 14 volt charger or Lithium BMS charger probably $600+
Disconnection and reconnection of all parts, fabrication, metalwork..
welding, cables, wiring & a few fancy gauges $1,000- $1,500
* * * So to do fancy job with 3 decent lithiums, decent charger, cabling and a couple of sexy gauges $4,500 (BTW, I don't know how to calculate battery size in relation to current being drawn... haven't got a clue ... )
* So if you did most of the work yourself and only used 2 batteries... and
a smaller charger, sourced parts from wreckers, ebay... maybe $2,000+
*** and if you go with top flight water injection add another $1,000-$1,500
Jeeez Louise... where does it stop ? . . Oh and i nearly forgot... there's raising the compression, exhaust mods, lightweight wheels, air dams, spoilers
..... And to throw a spanner in the works, the next ACTUAL large scale mod is LPG conversion. The government is giving $1,500 rebate on getting LPG fitted, so you pay $4,000 and when it's all finished they give you $1,500 back
so all up it's about $2,500... And that's for the latest Liquid Gas Injection.. It works just like FE except it's LILPG... Their claiming 5% better torque, uses the same amount as petrol, and it's 65 cents per litre where as premium unleaded is $1.65. So LPG is $55 to fill the Lex and Premium Unleaded is $140 to fill the tank... so it'll pay for itself in less than a year.... Woo-Hoo...
So......... LPG combined with being a semi-electric, you'll have 340hp on tap with the economy of my girlfriends car.... an '02 Peugeot 307.. 1.6 petrol
.... futures look'in good....

[deathtrain]

fastegg your going to spend a lot and not get the gains your thinking. good luck.

[oil pan 4]

The electric coolant pumps I use now use 5 and 7 amps.
The pump I plan on putting on the truck is bigger and takes 10 amps. I have a low speed setting that will cut it down to 5 or 6 amps.

[fastegg]

Originally Posted by deathtrain

fastegg your going to spend a lot and not get the gains your thinking. good luck.

I'm just bouncing idea's around in my head... Better than watching TV...