Self Made 10KVA Generator

[ahmedk06]

and by the way the fuel pump is not a governor, you need to get the information right here. all the fuel pumps work at the same RPM, its the FPR (Fuel pressure Regulator) usually attached with a vaccum pipe which varies the fuel flow, the rest goes back to the tank.

incase of Diesel Rotor based pumps, the are run by engine rpm, the more the engine gets fast the more the rotor throws diesel in the engine via injectors

and yes electrical governors are also available in market, the cheapest is around 35000Rs and as far as i have heard they are hard to adjust and aren't reliable.

lol at Fuel pump is Governor

[BackToCivicFaiez]

that clears everything........

now tell us the price? pesay kitnay bacha liyay by making it urself?

[YamahaYB100]

thanks a lot appreciate it
what the price of new alternator 10Kva or smaller
just to power up two 1.5ton split units and will it work with 1liter engine near about 53HP??
thanks in advance

bro price ka nahin pata but aap ko contact de sakta hon lahore main brand rith road par aor aap ko 10kva ka alternator 4 pole main mile ga single phase laina is ka power factor 0.8 ho ga mean 10*0.8=8kw aor ye max 8kw tak kam kare ga aor 1500rpm par chalay ga is k liye aap 8000watts ko 746se divide kar do (746watts=1hp) to 10.7hp answer aaye ga ab aap ko max 15hp ka engine chahiye jo 1500rpm par 15hp power de 15hp is liye k agar aap 10.7hp ka engine lo *** to wo full load par achi tarah kam nahin kare ga i think samajh gaye ho gai

[YamahaYB100]

by poles what do tou mean ??

if its the phase then i am using single phase, RPM to achieve 50hz on alternator is to run it on 1500rpm

and it depends upon the reduction pulley to adjust the engines rpm.

bro aap ko phase aor pole ka to pata nahin hai to kyun bahas kar rahe ho
alternator 2type k hote hain single aor three phase aor pole rotor k hote hain jo k ghoom raha hote hai

[YamahaYB100]

Hi !

The 2SZ has a good low end torque and running it on 2250rpm would create minimum noise. i dont like the neighbours and myself to be disturbed just because of a stupid generator.

the single pistons usually run at 5000 rpm or above like the Honda 5KVA and have maintainability issues.

rather than using a stabilizer we are using under frequency and over frequency relays to protect the household equipment in any event of failure.

.

bro aap ne koi calculation ki hai 2SZ engine ki k ye 2250rpm par kitne hp power de ga aor torque?
and about honda5kva is ka alternator khol k dekhna achi tarah ye 2pole ka hota hai aor 3000rpm par chalta hai 5000rpm par nahin

[YamahaYB100]

Hi !
rather than using a stabilizer we are using under frequency and over frequency relays to protect the household equipment in any event of failure.
.

haye ab aap ko kya kya batana pare ga janab ghar main use hone walay stabilizer main transformer hota hai aor transformer main frequency change nahin hoti aor ye sirf voltage up aor down karta hai aor relays ko circut se operate karwaya jata hai jis output voltage up and down hote hain but frequency kabhi change nahin hoti

[Xulfiqar]

^^ yep, take it easy YB100 sahab,

your explanations are correct, and the original poster is a little in the dark. And as you can see in one of his posts - the alternator spins at 1500 rpm to out 50Hz, meaning its a quad pole. IMO the choice of using a 2SZ is good, but there are some other factors to take care of.

If this ECU does not see a VSS signal for about 240 seconds afterwards above idle speed the engine will go into limp mode and also into overfuelling mode. Its a car engine and the ECU is very smart too, unlike the older OBD-0 gonnga behra ECU that did not care until some paramenters were called for.

anyways to the OP - you cannot change the transmission frequency by any sort of home stabiliser, it can only manipulate voltage like Mr YB100 says. The frequency of voltage is dictated by the alternator itself.

btw to fully understand the concept, open up a junk car alternator and thoroughly study its design, I taught my neighbors son matric physics electrics through it, and he got that concept burned into his brain now.

A car alternator is basically a 3 phase AC voltage generator but with a diode pack to block the inverse waves hence converting the output to DC voltage, the voltage regulator excites/unexcites the unit to vary output current. (LOAD)

btw using under and overfrequency relays does not make full sense here. Or you are not explaining why you used them.

[Sharo53]

bro price ka nahin pata but aap ko contact de sakta hon lahore main brand rith road par aor aap ko 10kva ka alternator 4 pole main mile ga single phase laina is ka power factor 0.8 ho ga mean 10*0.8=8kw aor ye max 8kw tak kam kare ga aor 1500rpm par chalay ga is k liye aap 8000watts ko 746se divide kar do (746watts=1hp) to 10.7hp answer aaye ga ab aap ko max 15hp ka engine chahiye jo 1500rpm par 15hp power de 15hp is liye k agar aap 10.7hp ka engine lo *** to wo full load par achi tarah kam nahin kare ga i think samajh gaye ho gai

thanks for the great info..
plz pm me the #..
one more question
if i don't know that how much power(HP) my engine gives at 1500RPM so is there any way i can calculate it?

[YamahaYB100]

thanks for the great info..
plz pm me the #..
one more question
if i don't know that how much power(HP) my engine gives at 1500RPM so is there any way i can calculate it?

yes you can calculate about number i will pm you tommorow go to brand rith road in lahore the shop names are
Madina Machinery Store (Honda Generators Dealer)
Sun Shine corp.
Ansar Yaqoob Corp.
National Corp.
China center.

[Sharo53]

and sir plz mention the method to calculate HP..

[YamahaYB100]

and sir plz mention the method to calculate HP..

Torque and horsepower relations:
T = HP * 5252 / RPM
HP = T * RPM / 5252
RPM = HP * 5252 / T
* Torque values are in foot pounds.
try it

[Xulfiqar]

the best way is to get hold of the original power graph of the engine from the manufacturer, When dealing with modern small petrol engines it becomes quite silly because they just dont have the the torque to spin the alternator.

On the other hand an oldschool style iron block long stroke. long con-rod engine would be happy twisting the alternator all day.

that is why genys are usually 2 valve/cyl, long stroke engines - they have enough torque to satisfy the alternators brake. OR you have to speed up the engine to get into acceptable torque band and then work to stablise alternator rpm. planetary gearbox etc.

[umer_nasim]

wohoo dats great work yar.atleast we hav got sum info.els engine swapz.

[YamahaYB100]

the best way is to get hold of the original power graph of the engine from the manufacturer, When dealing with modern small petrol engines it becomes quite silly because they just dont have the the torque to spin the alternator.

On the other hand an oldschool style iron block long stroke. long con-rod engine would be happy twisting the alternator all day.

that is why genys are usually 2 valve/cyl, long stroke engines - they have enough torque to satisfy the alternators brake. OR you have to speed up the engine to get into acceptable torque band and then work to stablise alternator rpm. planetary gearbox etc.

agree

[ahmedk06]

I am doing a DIY not giving an electrician lecture here, as far as theories are concerned, i dont care because I am not poking my nose in all the stuff, Mechanic makes engine, kharaad wala makes pulleys, painter paints it and the Generator electrician sets up the panel and safeties.

I dont care about the theories of what is happening inside the alternator nor it concerns me as far as it is running, I wanted to share a DIY and DIY doesnt follow the rules, Everybody has his her own technique of doing it. otherwise it wont be called a DIY.

Engine is start and everything is running fine, Limp mode issues as stated by some fellow are not expereinced by us. even the VVT is working and we have a perfect idling on the engine.

I clearly stated we have protection relays, no stabilizing. I dont know from where you picked up that we are regulating the frequency through relays. The relays protect the household equipment by cutting of the phase if it varies and doesnt remain near 50hz. This is done because a Mechanical governor can malfunction anytime.

also Overfuelling doesnt happen in the EFI engines, if ECU is running and even if it isnt performing like it does in a car, it doesnt matter cause its better than an old skool carby anyday anytime.

[supra_lover]

well here is mine...only found these pix taken a months back when my dad install a new electronic governer (governer= auto raceup) him self.
Runnign 5A toyota engine ,12.5 kv generator,and every thing.including auto start up panel when light goes..
reight now no light n ac 2 AC's r running perfect+ fridge and other home stuff with not even a single up/down of volt.
its an gud thing btw running this thing frm 4 year.

[supra_lover]

recently bought this 1 for my uncle.it has 7A toyota engine + 15kv motor its coast arnd 1 lac 58k.btw we dnt made thm at home .

[supra_lover]

here is the picture of electronic governer...

[Xulfiqar]

I am doing a DIY not giving an electrician lecture here, as far as theories are concerned, i dont care because I am not poking my nose in all the stuff, Mechanic makes engine, kharaad wala makes pulleys, painter paints it and the Generator electrician sets up the panel and safeties.

I dont care about the theories of what is happening inside the alternator nor it concerns me as far as it is running, I wanted to share a DIY and DIY doesnt follow the rules, Everybody has his her own technique of doing it. otherwise it wont be called a DIY.

Engine is start and everything is running fine, Limp mode issues as stated by some fellow are not expereinced by us. even the VVT is working and we have a perfect idling on the engine.

I clearly stated we have protection relays, no stabilizing. I dont know from where you picked up that we are regulating the frequency through relays. The relays protect the household equipment by cutting of the phase if it varies and doesnt remain near 50hz. This is done because a Mechanical governor can malfunction anytime.

also Overfuelling doesnt happen in the EFI engines, if ECU is running and even if it isnt performing like it does in a car, it doesnt matter cause its better than an old skool carby anyday anytime.

Overfuelling does happen on an EFI engine, when its in cold start mode - the ECT sees coolant temps below 80 degrees celcius (im talking toyota speak here) the engine overfuels to keep it running smooth but not at stoichometric perfection. Once at operating temperature and all input parameters are correct the ECU applies the running mode which has stoich correction.

The VVT in a toyota will not function unless the function is called for which in this case will never be called for because your engine is spinning at 2200 revs at constant load not accelerating.

Using car engines in generators is a good idea but if you look at toyotas industrial engines 3Y also comes industrial - it has a completely different cam timing and profile. That engine puts out serious torque compared to its vehicular counterpart. just like the Cummins 6BT diesel has a different cam for the vehicle application and generator application.

The best engine application Ive seen is a VW aircooled engine on a domestic generator and in KSA I saw them on the back of older mercedes buses running twin A/C compressors - the cooling tin was really interesting.

khair good job - beats the WAPDA outage.

[qaswah]

diesel kipor 5kva air cooled is around 50~55 thousand...so by using sync panel u can put two DG's as they will work simultaneoulsy if ur load is high else only one will run....
these kipors have shownthier capability in the northeren region, quite noise less and are tough machines.....and did i mentioned cheaper as well ???

as i have checked them on 3.5 kva load taking only 0.5 liter / hour ......

fingers crossed to see what will be the total cost of the project and how much load it can bear .....