- Joined
- Oct 19, 2005
- Messages
- 18,978
Assuming 150 crank hp sought, as overestimate to give conservative safer
results of following logic process with rounding up each conversion to fudge some more. Any obvious holes in my brain showing up here?
Takes about 0.5 lb fuel/hour per hp = 8 oz/hr/hp or 800 oz for 100 hp hr
150 hp/hr would burn 1200 oz hr. There are 240 cc in 8 oz. Each oz. is 30 cc.
So 2400 cc per 100 hp hr, or 3600 cc gas for 150 hp hr.
A US gallon of gasoline averages about 6.25 lb or 100 oz, so 150 hp needs 150 oz or 1.5 gallon fuel/hr. 1.5 gallon / 60min = 1.75 oz/ min, x 30 cc = 53 cc gas/hp/min. Fudge factor that to 55 cc.
My obsolete engine needs effective compression ratio 17:1 per liter to
produce torque pressure enough to reach 150 hp @ 7000 rpm. So 112-114 octane required to allow full ignition timing without detonation.
To get 116 octane requires 15% water mass of total fuel mass burnt. To
keep making power w/o lowering combustion pressure by too rich fuel,
water should replace/displace fuel. Leaving crude fuel delivery alone,
water injection will automatically substitute fuel leaning at max heat-power.
So 15% water per 55 cc fuel a min = 8.25 cc/ min water spray against 10 PSI intake blast should do it.
Btw expansion of inert atmosphere N gas heating does the loins share of the pressure work, not hydrocarbon oxidation vapors. Steam also add its push too.
So 15% water per 55 cc fuel a min = 8.25 cc/ min water spray into10 PSI intake
blast to do it. 2 liter water bottle, 65 oz, should give 8 min worth of anti-
detonation power while consuming almost a gallon of 91 octane of gasoline.
Water-methanol nozzles come rated @ 100 PSI. Water jug can take
40 PSI. So leaves ~30 PSI to force water into air blast, starting at
5-7 PSI as knock sensor indicates. So 1/3 nozzle pressure means
60 cc nozzle to flow enough up to 20 cc to give a big reserve to regulate
back some if full flow not needed.
So I ordered 60 cc nozzle for $20 in 1/8" NPT brass and SS elbow.
Also ordered, 12 v, 1/4" NPT, normally closed solenoid valve to work nozzle.
Adjustable manifold pressure sensor switch on hand triggers valve and
new ignition curve. Now to hunt for two spiked dog collars to complete
hardware install..
hobot
.
results of following logic process with rounding up each conversion to fudge some more. Any obvious holes in my brain showing up here?
Takes about 0.5 lb fuel/hour per hp = 8 oz/hr/hp or 800 oz for 100 hp hr
150 hp/hr would burn 1200 oz hr. There are 240 cc in 8 oz. Each oz. is 30 cc.
So 2400 cc per 100 hp hr, or 3600 cc gas for 150 hp hr.
A US gallon of gasoline averages about 6.25 lb or 100 oz, so 150 hp needs 150 oz or 1.5 gallon fuel/hr. 1.5 gallon / 60min = 1.75 oz/ min, x 30 cc = 53 cc gas/hp/min. Fudge factor that to 55 cc.
My obsolete engine needs effective compression ratio 17:1 per liter to
produce torque pressure enough to reach 150 hp @ 7000 rpm. So 112-114 octane required to allow full ignition timing without detonation.
To get 116 octane requires 15% water mass of total fuel mass burnt. To
keep making power w/o lowering combustion pressure by too rich fuel,
water should replace/displace fuel. Leaving crude fuel delivery alone,
water injection will automatically substitute fuel leaning at max heat-power.
So 15% water per 55 cc fuel a min = 8.25 cc/ min water spray against 10 PSI intake blast should do it.
Btw expansion of inert atmosphere N gas heating does the loins share of the pressure work, not hydrocarbon oxidation vapors. Steam also add its push too.
So 15% water per 55 cc fuel a min = 8.25 cc/ min water spray into10 PSI intake
blast to do it. 2 liter water bottle, 65 oz, should give 8 min worth of anti-
detonation power while consuming almost a gallon of 91 octane of gasoline.
Water-methanol nozzles come rated @ 100 PSI. Water jug can take
40 PSI. So leaves ~30 PSI to force water into air blast, starting at
5-7 PSI as knock sensor indicates. So 1/3 nozzle pressure means
60 cc nozzle to flow enough up to 20 cc to give a big reserve to regulate
back some if full flow not needed.
So I ordered 60 cc nozzle for $20 in 1/8" NPT brass and SS elbow.
Also ordered, 12 v, 1/4" NPT, normally closed solenoid valve to work nozzle.
Adjustable manifold pressure sensor switch on hand triggers valve and
new ignition curve. Now to hunt for two spiked dog collars to complete
hardware install..
hobot
.