PioneerX
|
| posted on 20/12/03 at 10:56 AM |
|
|
gsand,
Regarding the company that sells software to give engine stat. SPX Uk Ltd (the company I work for) produces this software directly for 90% of the
OEM's. We also do ECU to USB intefaces, bluetooth wireless diagnostic equipment.
Simon
|
|
|
|
|
JoelP
|
| posted on 21/12/03 at 06:34 PM |
|
|
regarding electric superchargers, my thoughs on the subject were that they do need alot of power, it is only slightly more than a supercharger running
off the crank, only the inefficiency of the altenator and motor make it worse. This is probably the main draw back. If two altenators were used, and a
large battery, with some sort of cutout so it didnt run itself flat, it might work. The advantage of an electric supercharger is that it can use the
power produced by the altenators when the engine is idling, cos the excess is stored in the battery. Not sure what happens to spare altenator output
when the battery is full...
Do altenators charge much when idling?
|
|
|
paulf
|
| posted on 21/12/03 at 10:01 PM |
|
|
There was a company trying to sell electric superchargers at the Donnington show a couple of years back.
I thought at the time the idea was totaly unfeasible as they consisted of a turbo compressor and housing of the sort of size used on a small lorry
engine coupled directly to a small electric motor not much bigger than a heater blower motor, with a control box. Turbos dont produce any usefull
output below about 75000 rpm and it seemed highly unlikely that a motor of the size used would provide that.
The idea would be good in principle if used just for short bursts of power and maybe using a seperate nicad or other high discharge battery driving a
starter type motor with gearing to get the speed required, however as stated the horsepower required is very large to gain any boost, in a jet engine
something like 75percent of the total energy produced is used to turn the compressor to keep it running and the same principle applys to turbos.
Paul.
quote:
Originally posted by JoelP
regarding electric superchargers, my thoughs on the subject were that they do need alot of power, it is only slightly more than a supercharger running
off the crank, only the inefficiency of the altenator and motor make it worse. This is probably the main draw back. If two altenators were used, and a
large battery, with some sort of cutout so it didnt run itself flat, it might work. The advantage of an electric supercharger is that it can use the
power produced by the altenators when the engine is idling, cos the excess is stored in the battery. Not sure what happens to spare altenator output
when the battery is full...
Do altenators charge much when idling?
|
|
|
Bob C
|
| posted on 22/12/03 at 04:24 PM |
|
|
Turbo speeds go over 100krpm - it's near impossible to make mechanics (eg gears) work at this speed - any lubricant just flies off!
Any motor going at this speed has to be small or it would explode!(F = mrw^2). I think a steel disk explodes at <10cm diam at 100krpm, but that
really is a dodgy memory from long long ago...
cheers
Bob C
PS if someone has the real figures I'd be interested to know...
|
|
|
Mr G
|
| posted on 24/12/03 at 03:12 PM |
|
|
CAR PC SOFTWARE
For the media side of things...
Cheers
G
|
|
|
Bigfoot
|
| posted on 27/12/03 at 12:30 PM |
|
|
I earn my living designing ATMEL based embedded telemetry and control systems, including GPS, and writing the windows software to support them.
I will be using a digital Dash, I just haven't decided which method to use. I hadn't considered the idea of MP3, email etc. until I read
this thread, but what bloody good idea.
The used laptop approach is quite practical, a cut down installation of Win98SE would boot fairly quickly. Solid state disk replacements that plug
directly into an IDE socket are fairly cheap now and would be more practical than a HDD, in a mobile situation.
Small form factor motherboards are available (about 4" x 6" which require only a single 5 volt supply, and no fan.
A palmtop or handheld PC running Windows could be used. if you could get all of your gauges on a 4" screen.
Speaking of gauges, the prices quoted for some of the OCX controls are daylight robbery, I could write them for a hell of a lot less if there was
sufficient interest, perhaps even the complete dashboard program.
Sensing the inputs is not difficult, I already sell ATMEL based products that do all of that, and provide a serial and LCD output. So long as you know
the nature of the sensor's output, no problem.
Cheers
Bigfoot.
|
|
|
Bigfoot
|
| posted on 27/12/03 at 12:33 PM |
|
|
Oops, sorry about the smiley face in my last post, I seem to have a dislexic keyboard.
|
|
|
.jpg)
