4 ms·
You can overfill the cylinder for the first stroke, because the unspent fuel will burn on the next cycle instead of being exhausted. High power engines exhaust
by nikanj 2y ago
You can overfill the cylinder for the first stroke, because the unspent fuel will burn on the next cycle instead of being exhausted.
High power engines exhaust a lot of unburned fuel, because you can't guarantee an exact 100% fill for the cylinder, and there's more power to be had at 120% fill than 80% fill. Oversimplified of course.
- ethbr1 2y agoBut you don't have an additional intake stroke, so there's limited oxygen in the second power stroke to burn. It sounds more like they're running fuel-lean, then possibly adding more fuel before the second compression stroke.