| Title | Fuel Injection Makes 2-Stroke Great Again | |
| Date | Tuesday March 21 2017, @04:21AM | |
| Author | Fnord666 | |
| Topic | ||
| from the won't-help-the-noise dept. | ||
Two-stroke engines offer twice as many power strokes for a given number of rotations and pistons by doing the exhaust and intake simultaneously. This normally happens spanning the end of the power stroke and the beginning of the compression stroke, though ideally it would only steal time from the beginning of the compression stroke. By tradition, nearly all two-stroke engines use a carburetor and are lubricated by oil being mixed into the fuel. The problem is pollution: unburned fuel passes right through the cylinder because the intake and exhaust valves open together, and this is made much worse by having the fuel be about 2% to 3% lubricating oil.
KTM fixes this for their two-stroke motorcycles by adding fuel injection. KTM injects into the transfer port, which isn't as good as injecting directly into the compression chamber but should still be a huge improvement. Honda has also filed a patent for a general purpose two-stroke with fuel injection. If one of them simply adds a normal oil pump, many of the problems of two-stroke pollution and annoyance should be gone. Next up, we need this small enough for chainsaws and weed cutters.
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printed from SoylentNews, Fuel Injection Makes 2-Stroke Great Again on 2024-04-28 06:23:06