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567 and 645 engine
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<p>A supercharger fills the cylinder with compressed air. The roots blower fills the cylinder with near-atmosphere pressure air. It only serves as a "ventilator" that fills the cylinder with air because there is no intake stroke. </p><p>Of course, the principle is the same, it's just a difference of how you set the compressor device, will it compress air , or just exchange it</p><p> So in principle, a roots blower can serve as a supercharger, but in this case doesn't</p><p>There is only a small pressure difference to stop exhaust gasses from returning to the cylinder, but that pressure difference is not enough to be considered "supercharged".</p><p> someone correct me if I'm wrong</p><p>But I'm still currious about this rack setting. I suspect Don ment the rack that rotates the gears of individual pumps that control the amount of fuel that is being injected. If that is so, I'm not sure what could this mean, that one of the gears skips a tooth and provides more fuel to one of the cylinders than the rest?? Is that what makes the chugging sound (one cylinder firing stronger)? <br /> </p><p> </p>
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