Genset .. hmmm Carbs , cold start ..
propane is cheap , easy to valve , my carb
to replace the OEM , is pc of copper tube , and a steel frame
around it for a practical way to pull the copper tube carb
against the head , Copper because i can easily solder the injection
mechanism into side of tube .. plunger enters the open end
of tube , as a throttle , it rides on a DIY ball screw mechanism
so you twist a crank , and the throttle closes titely , another air entrance
thru a tiny hole , is for idling ,
Injectors are DIY , using sewing needles , into shrunk down 1/8 inch
copper fuel tubes , but from opposite side of big copper tube ,
are poppet valves that can cover the needle valves exit , just in case
there is problems , or to control fuel flow in a digital manner ,
The mcu can select any of 8 injectors to control fuel flow ,
this takes a load off the method of moving needles in and out
to control flow , Sounds complicated ,
yet its fault tolerance , that i need , I dont want complicated
fuel maps , i will have simple cheap sensors and the mcu ( Nintendo DSL )
will not need to be precise , to get good fuel economy .
suppose a needle leaks , and ruins idle mixture ....
mcu selects a needle that dont leak , by closing off the leaking needle
mcu can also up or down , fuel psi to improve a fault condition ,
yet average fuel pressure is 3 PSI ,
All very cheap and easy to build , sensors are simple crank mnted
reluctance type TACH sendors , DIY in minutes , use old 8 penny nails
and old walwarts for the silicon steel , just dont use too much steel , for
the rpm , fine magnet wire will up the voltage , ..
Home Depot CFL curly lights have high voltage NPN transistors to
use as temperature measuring semiconductors , just bias the B E
about .005 mils and read the voltage across the B E , it will
be a very accurate 0.0022 volts / C , now put this transistor transducer
inside the engine somewhere , to tell mcu , engine temp ,
Buy a LM34DZ or sim to SET this DIY thermometer .
I was amased at how close it tracks , I did this 20 years ago on
a Honda car , i put an LM34DZ in place of the cheap transistor junc ,
it tracked perfectly ,,,
back to TACH , RPM , any IC Chip that can dual slope , fixed
de entigrate , , the circuit integrates the crank sensor ....
at idle , integrator gets a well shaped pulse , integrates it , yet
the fixed deintegrate dischages the energy just integrated , to produce
little volt , out , but at high RPM , the pulses are arriving so fast they
dominate the integrator , to raise its DC output , aka Dual slope Integration
Or , just buy a LM2907 from Jamemco for $1. 09 .. Its the famous TACH chip .
But youll need many poles aka magnets on the crank , maybe 6 ,
so that the 2907 will give accurate DC out at engine idle , no problem
at 7000 rpm , the LM2907 easily does this engine speed ,
i have many low cost Japan gensets , and ill also be carb- ing
B18b Accura engines , in airplanes , The B18B and B18C are
strong buillt racing engines , yet you can start a project ,, buying them
at $800 ea from Canada ! Its an opportunity !
My project is a 1500 HP ( B18b times 6 ) pusher prop , bi plane
with folding wings , it fits into a hanger HOLE 9.5 feet tall by 9 foot
wide . Upper wing moves , inflight , forward for weight and balance ,
for take off and landing ,
Its floats fold down , then away and up , to allow landing gear
to deploy , Turbo'd engines have variable intake cam timing to
nix need for waste gate , Thanks to Mr Atkison "cycle" , allows
the turbo to level out the unwanted variations in induction aka
breathing , especially at high altitude , where the intake cam is full advanced
to aide in compressing the thin air , yet at low altitude and economy
cruise , the compression is very low ( cam is retarded up to 60 degrees )
, just high enuf to make the Turbo work at max effeciency .
ignition is a magneto on crank , producing high voltage to a transistor
coil , again ,,, Home Depot curly CFl lites , give the
13003 transistors
to drive the home made ign coil , 12vdc systems are bad , you can always
step down the system voltage from magneto to charge batteries ,
But for lack of transistors , our cars use 15 vdc alternators ,
i dont know how to use snipped-for-privacy@googlegroup.com
yet i created it , its closed , invite only ,
send email address , ill TRY to figure out how to add it ,
any help appreciated ... It wont be boring ,
everything from computers , Linux , Forth , WXP , to Nintendo DSL controllers to , cars trucks , sand buggies with motorcycles , motorized bike engines , MIG TIG welder power supplies using Flourescent bulbs , DIY Plasma cutters , Hydraulic pump powered air compressors , they're more effecient ,