I bought a new car recently. I love it, but it uses too much high octane gas. As I'm mechanically inclined, I rigged the car to run on propane (high octane :D) when needed/wanted because of gas prices. Propane prices have been higher in the past, and in fear of this I have been learning how to make bio-methane, hydrogen gas, and other flammable gasses. But I need these gasses to be under pressure for injection into the engine. How can I go about compressing flammable gasses into, say an old propane cylinder? As I understand it, air compressors are a bad idea due to friction and possible ignition.
Where will the energy come from to power the compressor?
You don't even know what octane is Jesus fricking christ I hate these stupid fake threads.
>:D
what gave it away?
>As I'm mechanically inclined, I rigged the car to run on propane
>I need these gasses to be under pressure
anything you want to tell us mate? your not an islamist trying to build a car bomb are you
The fricknam I reading.
Modern cars care less about octane than they ever have. Your new car doesn't care about fucjing octane unless you got a used Bugatti or some shit
Not entirely true. Subaru's 2.0 litres that they've been using since the early 2010's get about 5mpg more using 93+, but that extra bit isn't worth it considering it's usually double the price of the regular 89.
OP could always cool the gasses down then transfer it to the container when they're liquid. Requires a bit of dry ice if you don't have access to industrial refrigeration.
Now THATS a helpful idea. thank you.
Not at all. Compression ratios in modern cars are higher than they've ever been, and the proliferation of small displacement turbo shitboxes means cars care more about octane than ever. Modern high compression engines do have the capability to detect knock and dial the timing back to keep from grenading itself, but it won't be happy. Old low compression cars generally don't give a damn about octane.
Yes exactly they all got anti knock sensors and everything is designed to work fine with low octane anyway.
Honda is just fine opening themselves up to a false advtising/fraud/whatver lawsuit for l utting out a whole fleet of cars that they rate at 87 octane that really need 91? Yeah okay.
That's not a feature, it's just moron protectant for people like you, kek. Map a 91 octane car when it's running on 87 and you'll see it's barely staying above predetonation, the timing is cranked all the way back, and it's using a way richer fuel map than it would be using otherwise. They can run on 87, yeah, but it's not what the car was designed for and the engine will suffer long term wear for it. You can do whatever you want with your shitbox, but you're objectively wrong about all high octane requirements.
So why does the manual say to run 87 octane? Does honda want to get fricked by a bunch of lawyers by causing everyone's engine to detonate? No? Oh so it is actually what they're designed for?
>Map a 91 octane car when it's running on 87 and you'll see it's barely staying above predetonation, the timing is cranked all the way back, and it's using a way richer fuel map than it would be using otherwise
you should fire you tuner then. that is what low octane tables are for.
man whatever you do, please live stream it so we can see you die.
jesus where to start...
methane has an octane rating of 110.
if your car does not require high octane gas there will be little benefit from using it.
most cars that run on natural gas store the gas at 3600 psi. US law requires that any tank used to store said gas must be inspected every 3 years or 36,000 miles.
a natural gas compressor is a totally different animal and DIYing it is at minimum idiotic. there are 4 available on ebay for $750 condition unknown.
while your little project might seem like it would be fun and all, it would be spectacular if you fricked it up.
but then none of this matters, because you won't do it.
^This. When one starts out that clueless they don't yet know WHY they will never do it.
>does not require high octane gas there will be little benefit from using it
actually, it will get less MPG on high octane as opposed to low octane in that scenario.
/diy/:
>NOOO DON'T YOUR IDEA IS moronic
meanwhile on youtube:
>multiple people showing detailed videos of them successfully doing it and describing their setups
this happens every single time and you naysayers never learn to keep your moronic mouths shut
>this happens
Yeah, and if op wasn't a homosexual he would have found them himself. Instead he came here and posted the most basic b***h question because he's a homosexual and will never do it.
Come on op. Do it. Show me your dry ice setup
>how to compress gas?
use an air(gas) compressor?
Possibly use a fridge compressor. There are reputable people on youtube who have used these kinds of compressors to compress ammonia, hydrogen, ethylene, and likely other gases. Unsure if it will work for every single gas you want to, but it may.
See: Hyperspace Pirate, Advanced Tinkering, and there's also some other German guy that used it to compress hydrogen made from his own electrolytic hydrogen generator you can probably find.
I know nothing about gas compression/compressors but I am also somewhat interested in the topic and found some of the mentioned videos regarding this.
As everybody else has said, compressed gases are very dangerous and you should do a lot of research before attempting anything.
>But I need these gasses to be under pressure for injection into the engine.
No. Put the tank down and walk away. Before you have a nice day.
The propane will be compressed and liquefied by the supplier. Filling the tank will involve connecting the vendor's supply tank to yours. They have the pump. You don't need one. And the pressure differential between tanks is actually quite low (the absolute pressure above atmospheric is high).
Next, you don't inject propane into an engine at high pressure. You'll need a special regulator to reduce tank pressure to what the engine requires. And that tank in your pic is the wrong type for vehicular use. Those take propane vapors off the top. Vehicles feed liquid propane to a heated regulator (entirely different from the one in your barbecue). If you take propane out of a barbecue tank fast enough to run anything more than a small engine, that tank will turn into an ice cube in a few minutes.
I used to have a Dodge Power Wagon converted to propane. Nice rig.