| 摘要 |
A new design of engine valves operation system provides more accuracy in timing and increase in efficiency of engine. With the pipe structure over the engine, valves can be operated by the exhaust gases after combustion within the cylinders. After combustion, an opening near bottom limit of piston of one cylinder routes some of the exhaust gases to open gas intake valve of prior cylinder and exhaust valve of its own. This way the vested combustion energy would be in use. On the other hand, a portion of energy directly from the engine crank shaft to operate engine valves in an ordinary systems would be saved and therefore results in increase of engine performance. Since there are no need timing belt, cam shaft and pulleys in new operation system, the loss powers due to belt tightness and friction of pulleys, and cam shaft would be directed to the wheels adding more Horse Power. To start the engine, one additional intake valve and one additional exhaust valve are added to the first cylinder. These valves operated by starter motor at start-up of engine, and kept closed while engine is running.
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