How do i use the hydrogen engine?

[Zink]

How do i use the hydrogen engine?

[Mochur]

Same issue here. I tried to connect it with an H2/O2 generator , but it doesnt work. Cant put my Hydrogen bottle in there aswell :/

[Malkano]

I had to turn the block on and off to get it going

[Weaver]

You need a Hydrogen tank, the h2/o2 generator can't produce fast enough to keep up. Also you want another power source, even if it's a small battery to start the process as you need power for the hydrogen to transfer.

[Jaguvaari]

I had to save, close Space Engineers and reload the save to make the hydrogen engine to work.

[-VG- Napster]

Ready to get depressed?
https://www.youtube.com/watch?v=8Qe_3dpDlSc

[Aitan Liran]

So, from what i understand... You need the H2/O2 Genorator to have a huge ammount of ice in it. Like in the thousands. If you are putting small amounts of ice in, the Hydrogen engines will eat it up in a heart beat making it appear like you have no power. It also helps to Group all your thrusters to turn them on and off at will. Lemme know if that helps =]

[Tanoshi]

Usually for emergency power when I really screw something up in space

[Weaver]

You use a hydrogen tank, not a o2/h2 generator, it's simple. It's like a freaking car engine. You don't run around with a fuel refinery strapped to the car, turning crude oil into gasoline.

[MadGreyOne]

It does work (sorta) if you connect two o2 generators to the same hydrogen engine, and have a LOT of ice in storage. I've been using a tank when I can fit it in though, much simpler. Also, if you only have one o2 connected to the hydro engine and you turn it on, it will actually run at 50% capacity. It looks like nothing is happening at first glance, other than your ice disappearing, but you'll see they hydro generating 2.5MW, cause it's getting half the fuel it needs to run at full capacity. The tank on the engine will stay at zero though, so it looks like it isn't coming on.

[LastAncientOne]

There is a major feedback loop problem between the O2/H2 generators and the hydrogen engines. You must NEVER have them both on at the same time. If you have them on at the same time all of your stored hydrogen and your stored ice will disappear very quickly. You must use your generator to fill your hydrogen tank then turn the generator off. Then turn the hydrogen engine on. The hydrogen is actually consumed by the hudrogen engine fairly slowly. You will also need an oxygen tank if you want to keep an available oxygen supply without the O2/H2 generator running. I can only assume that this feedback loop is a bug and will be fixed in the future.

[JimTheSoundman]

This was on a dedicated server:
I had a small cargo container, an Oxygen Generator, and a Cryo Chamber connected together at my base. Fully powered. The Oxygen Generator had about 3K of ice in it.
I connected a Hydrogen Engine directly onto the end of the O2 Generator, and nothing happened. I tried turning the Hydrogen Engine off and on, tried turning the O2 Generator off and on, still nothing happened. Logged off, and logged back on, no change.
It wasn't until I added more ice to the setup that it finally sprung to life.

Just FYI, with a single O2 Generator, the Hydrogen Engine consumes about 4K of ice per **MINUTE** and puts out 2.5Mw of power. I would assume that is double if you have two O2 generators. That's a hell of a lot of ice, so be prepared.

[Raider Deci]

I already miss uranium on planets. Have started to dabble some into hydrogen enginges for atmospheric ships and I already despise them. Besides batteries there is no other way to power ships on planets and they require a huge set-up. The tooltip ingame says the hydrogen engine has a tank but you still need to built that separate hydrogen-tank to get things going.
The more I play and catch-up to the current state of the game the more I am annoyed that uranium is removed from planet. We have it in real-life down here! Why couldnt they just have made it very rare and shoved it very deep underground?!

[Palad1n]

There are some good mods out there that increases the efficiency of the hydro engines, otherwise the vanilla version is totally worthless. I am really disappointed in Keen for not going back to revise and fix it, and as usual, the modding community has to fix the game for them.

[Buzzard]

H2 engines aren't a good thing on atmospheric craft. Rovers, and space craft, are fine. The engine's output tends to be a bit low for running atmos to keep things aloft.
Use more batteries, and maybe stick some solars on it. If you're running large-grid, you can put windmills on that will work when the craft lock to the ground/base with landing gear or a connector.