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  1. geoffreyjm

    Exhaust Gas Recirculation

    My view of the inert gas introduction would be that it does not affect the combustion temperature (not much anyway, it would slow the combustion, giving a slower pressure rise and lower peak pressure and temp), but it reduces the number of oxygen atoms available, thus reducing the formation of...
  2. geoffreyjm

    Using 12VDC and a car coil to create an ignitor

    I am sure that any electronics store (Caddy Shack in the US, I'm in Australia)that sells kits would be able to give you an oscillator to suit your prupose. A good kit to try would be a Jacobs ladder kit, which produces a high voltage arc between two wires in a vertical V, the arc climbs the V...
  3. geoffreyjm

    Flame speed

    I am not sure about this, but my understanding of explosion protection/relief is to assume the worst case, which would be a stoichiometric mixture and design for pressure relief would work on the maximium pressure increase, which, from atmospheric pressure, would give 700 kPa for a hydrocarbon...
  4. geoffreyjm

    Conversion of petrol engine to CNG

    I don't know why you think that high compression ratios are a problem for CNG engines. In fact if I was going to run a dedicated CNG engine I would raise the compression ratio to improve the efficiency and power output to make up for the loss in power that is inevitable with a non-turbocharged...
  5. geoffreyjm

    Tire Performance Curves

    I was interested in this information too. I have been debating with others on a number of occasions that tyres generally give the best grip at close to zero camber angle, and had seen data to back this up but have been unable to find it again.
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