If l remember right its not the best idea to store hydrogen rich gas in a steel bottle. Being such a small molecule it difuses trugh the walls and allso makes them britle.
I thod a lot about storeing woodgas too. At least for cooking purposes and such, domestic and stationary. perhaps best and safest method is to store it in a bell gasomere but when l calculated capacity nessesery for my neads l preety much stoped thinking in that direction. Why make a 3m3 gasomere holding explosive and poisonous gas when you can make a butcket size gasifier that will suply just the same quantity of gas on demand? I mean it is simpler to open a valve and light a burner but starting a charcoal gasifier is not much harder nor slower.
On compressing woodgas on a vehicle. Now that is a different story and l think we shuld look closee to it. Steve wuld say every woodgaser situation is different and that is indeed the case. If l had acess to “cheap” petrol monster engine trucks like you Americans have, l wuld likely never concider this but the thing is, here, a 2 liter engine is concidered huge. A imported “woodgas suitible” vehicle wuld cost me a fortune on import tax and spare parts, registration tax… with my sallary wich is concidered a good one in this region thats about a year worth of sallary so thats not the way to go.
Anyway my idea is basicly wery simple and straingt forward. Step one is pressurise the gas just minimaly to overcome the drag of the system. This culd be done in many ways, perhaps best wuld be a belt driven centrifugal fan. The power demand shuld be low too sence we are only pushing the gas instead of actualy compressing it. Then, step two is to install a membrane vacuum automixer on, but inverted! Usualy gas comes at the engine at a vacuum and the automixer equalizes the pressure of air with restricting the air. This is the opposite. Air is drawn in the engine at atmospheric presure and the automixer restricts the pressurised gas to equalize. This wuld alow for greater cyl filling ratio and a much better throtle responce while not realy adding a ton of complexity.