Design of engine valves operation system, auto-valve system (AVS)

Abstract

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.

What claimed is:  
     
         1 . Said engine valves could be operated by the pressure of exhaust gases coming from said cylinders just after combustion. When said engine piston reaches its low limit within the cylinder, exhaust gas in the cylinder still has high pressure and energy to open said engine valve. This energy is vested in an ordinary systems on the next cycle by pushing the gas through exhaust.  
     
     
         2 . In an ordinary system, said engine crank shaft drives said cam shaft by timing belt to open the valves, and some of engine power is lost for this operation due to friction. On the other hand, the new operation system eliminates cam shaft, pulleys and timing belt, and consequently power loss due to friction, results in higher horse power.  
     
     
         3 . The new operation system provides very accurate timing to open the valves, therefore improve engine performance, and eliminates timing belt adjustment, maintenance and possibility of damage on said engine valves and pistons due to improper adjustments.  
     
     
         4 . The new operation system has low cost in manufacturing, both material and labor wise, therefore, overall engine cost reduces while efficiency increases.