Pardon my ignorance, but the video does not show and I am interested to see if t... | Hacker News

Hacker Newsnew | past | comments | ask | show | jobs | submit

		hyperliner on July 2, 2014 \| parent \| context \| favorite \| on: No crankshaft, no problem: Toyota's free piston en... Pardon my ignorance, but the video does not show and I am interested to see if they modified the system, but what draws the piston back towards the spark plug?

tnorthcutt on July 2, 2014 | [–]

It's not drawn, it's pushed, by the pressure built up in the "gas spring chamber".

phea on July 2, 2014 | | [–]

It's a gas spring, similar to a car shock.

juandopazo on July 2, 2014 | [–]

IIUC, a spring.

Guidelines | FAQ | Lists | API | Security | Legal | Apply to YC | Contact