25 years ago I came up with the idea of locating the metering jets at the solenoid outlet rather than at the nozzle / injector. I realised many of the advantages this gave over the method used by all others top companies (at the nozzle inlet) and I've realised even more benefits as time has gone by, so here is the latest list of advantages that locating the metering jets at the Pulsoid outlets has over locating them at the nozzle inlets;
1) The jet meters denser nitrous when located at the solenoid, which results in more "performance" from a given jet size by way of more torque and sooner in the operating cycle.
2) The initial 'hit' of the system is lean for a shorter period of time which is safer for the engine. ALL other systems 'hit hard' due to the nitrous getting to the engine much quicker than the fuel.
3) The initial 'hit' is also softer than when the metering jet is located at the nozzle. This means the vehicle as a whole is under less stress and that it can handle higher full power levels than with a 'hard hit' system.
4) With the right design of distribution block it reduces the risk of uneven distribution, jet blockage and mismatched jets.
5) On a V8 engine (for example) it can reduce the number of jets from 16 to just 2 which makes it quicker and more accurate to adjust, as well as being much cheaper.
6) When a system is pulsed the metering jet location is vital for control over the flow. Having the metering jet at the nozzle allows the pipe to act like a reservoir which neutralises the desired effect of delivering matched short bursts of fuel and nitrous.
Well that's it for now but I'm sure I've missed some so come back in a week or so and there may be a few more posted.
Regards
