好似仲會降低回壓作用呱，高速“dup”油回落到怠速呢個時間，因為油濾作用減少回壓令油耗相對降低一DD，唔知甘理解有無錯呢！
其實我系睇咗ORION既一個CPD諗起呢D嘢！類似于一種泄壓閥！唔知大家有無了解過，有就發表下心得啦！
When an engine is running at full throttle, a large volume of burned gases flow through the exhaust. Part of the gases are expelled out of the exhaust pipe and part of the gases find their way towards the fuel tank.
Engines have 2 main settings, High Speed Needle HSN and Low Speed Needle LSN. Engines are tuned to have the highest speed possible with the HSN and to be stable at idling with the LSN.
When the engine stands idling, only a small amount of pressure is created, when the engine runs a full throttle a large amount of pressure is created.
Problems arise when you switch from full throttle to low speed, high pressure generated from running at full throttle is still present and it is pushing fuel to the carbutaror inlet though the carburator is closed. Because of this the mixture will become too rich, causing slower acceleration and wasting fuel.
The CRF CPD acting as a pressure valve system, effectively resolves this problem by regulating the amount of pressure going to the fuel tank. The valve allows a constant amount of pressure to be sent to the fuel tank, by opening or closing itself depending on the engine’s rotation speed.
Constant pressure allows for:
‧ Easier adjustement for ANY type and size of engine.
‧ Better low end response because the mixture always remains
correct and does not enrichen because of the excess pressure.
‧ Longer run times because there is no excess pressure pushing
un-needed fuel inside the engine..
当引擎在高速运转时，会有很多压力气体从排气管回流到油箱内，从而导致油箱内部高压力，当你从高速到低速运转时，由于油箱中的高压力还未完全释放，所以因为压力作用，会将多余的燃料注射到你的引擎化油器中，从而浪费不需要的燃料（造成高油耗）及使得引擎工作产生微妙的变化，而CPD系统就是用来平衡这个问题的全新产物，使用了CPD后有以下几个优点：
1）让你的引擎更加容易调教，听话（记得是所有引擎哦！）
2）让你的引擎低速响应更加优秀，因为CPD无时无刻不在工作
3）让你的引擎更加省油，因为没有了多余的不需要的燃料被注入化油器中，从而让你的战车在相同燃料供应情况下，坚持更长时间 |
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