There are lots of anti-detonation methods around. My favourite is Honda's CVCC (1970s) and CVCC-II/Combax (early 80s). These divide the combustion chamber into two areas. A small area has a rich mixture and the spark plug, and is separated from the rest of the combustion chamber by a perforated panel. The main combustion chamber can be run much leaner, as the flame front passes smoothly into this area through the panel. This slows the burn process and effectively increases the octane rating of the fuel - so, no detonation. The benefits are considerable - cleaner burning, these engines were able to meet emissions standards with no catalytic converter. Plus, the Combax Turbo was able to produce huge amounts of power, without the detonation problems that normally plague turbocharged engines, and with much less stress on the engine. It's a very clever system, and I thought it was worth mentioning here as it's a very workable way of reducing detonation without having to go to the trouble of using additives.
f.
Onalea Gilbertson (singer on this track) is a great vocalist. Chances are if you've heard of her before, it'd be from her anime voice acting - Moonbay in Zoids (Chaotic Century), plus various characters in G Gundam.
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There are lots of anti-detonation methods around. My favourite is Honda's CVCC (1970s) and CVCC-II/Combax (early 80s). These divide the combustion chamber into two areas. A small area has a rich mixture and the spark plug, and is separated from the rest of the combustion chamber by a perforated panel. The main combustion chamber can be run much leaner, as the flame front passes smoothly into this area through the panel. This slows the burn process and effectively increases the octane rating of the fuel - so, no detonation. The benefits are considerable - cleaner burning, these engines were able to meet emissions standards with no catalytic converter. Plus, the Combax Turbo was able to produce huge amounts of power, without the detonation problems that normally plague turbocharged engines, and with much less stress on the engine. It's a very clever system, and I thought it was worth mentioning here as it's a very workable way of reducing detonation without having to go to the trouble of using additives. f.
Onalea Gilbertson (singer on this track) is a great vocalist. Chances are if you've heard of her before, it'd be from her anime voice acting - Moonbay in Zoids (Chaotic Century), plus various characters in G Gundam.