The Variable Power engine series consists of 7 different type of engines which can vary their output power, the engines are named (Variable Power engine 1) VP1 to VP7. The VP1 to VP3 employ independent new techniques while the VP7 engine employs all the 3 methods, making it the primary invention. The VP4 to VP6 employ combination of two of the new methods employed in VP1 to VP3. Apart from these engines a new valve mechanism is also explained which can be used to increase the volumetric efficiency of these VP engine when they are turbocharged, the valve mechanism can also be used to improve the volumetric efficiency of any other turbocharged engine as well. VP1 Changes the displacement volume of the engine using an extra cylinder, while VP2 uses an extra cylinder to change the compression ratio and VP3 changes the stroke length to vary the output power.
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