Abstract:
A valve mechanism for a reciprocating piston internal combustion engine having one large poppet valve per cylinder communicating with both inlet and exhaust tracts. A partition between the inlet and exhaust tracts has gas flow ports therethrough moving into and out of alignment with similar gas flow ports in the valve stem. The ports are arranged to permit gas flow from the inlet tract to the outlet tract when the valve is closed.
Abstract:
An inlet and exhaust valve in internal combustion engines is described in the form of a vessel, designed with a large through cavity in its interior. The valve has two guiderods (8, 9) and two seating zones (1, 2), one on its internal side in which a conventional valve is fitted, and the other (1) on its external side where it itself fits onto the cylinder head. The design of this valve allows it to have a large dimension and from which it adjusts on its inside, factors which result in an increase in the combustibility of the gases, improving the efficiency of the engine. This improvement brings with it in addition a reduction in the emission of pollutant gases.
Abstract:
An intake or exhaust valve assembly for use in a four cycle internal combustion engine including a primary poppet valve, said primary poppet valve having at least one aperture disposed through its valve body and a secondary poppet valve body mounted to seal when engaged to the primary valve body, said secondary valve body having at least one aperture and a biasing means for moving the secondary valve body away from the primary valve body during the initial opening process when the primary valve is accelerating to its opened position. In the closed position of an intake port, the primary valve apertures are not aligned with the secondary valve apertures thus forming a sealed closure across the port. During the opening process of the intake cycle the biasing means moves the secondary valve body away from the primary valve body, thereby permitting intake charge to flow through the apertures disposed in the primary and the secondary valve bodies. In continuation during the final travel of the primary valve to the full opening said secondary valve is unseated by a stop causing the secondary valve to travel in unison to the maximum valve lift position, greatly increasing the volumetric efficiency of the engine.
Abstract:
Combustion engine having a cylinder and a piston movable therein and having a spark plug for igniting the combustible fuel. Three valves are concentricly located coaxially with the spark plug for separately controlling the flow of incoming fresh air to the cylinder and the flow of the fuel mixture to the cylinder and the flow of the exhaust gases from the cylinder. The engine presents the necessary valve seat for the exhaust valve, and the other two valves are also provided with valve seats, and springs urge each of the valves toward their respective seated positions. Also, push rods and rocker arms are arranged for opening the valves, as required. The entire arrangement provides for introducing a layer of clean air next to the cylinder wall and then introducing the fuel mixture into the center of the cylinder and adjacent the spark plug. Upon firing, the flame is primarily confined by the boundary of fresh air, and the flame is thus away from the cylinder wall. The exhaust gas then moves from the region adjacent the cylinder wall and out of the cylinder.
Abstract:
An internal combustion engine having an annular port and valve arranged to direct flow from dual inner and outer portions of the port in cylinder flow patterns having radially oppositely directed flow components. Various embodiments providing cylinder charge stratification or dual inlet and exhaust valve functions are disclosed.
Abstract:
Improvements in a fuel injected, internal combustion engine having a first passage for flow of air into the combustion chamber and exit of exhaust gases from the combustion chamber and a single poppet valve opened and closed in timed relation to rotation of the engine's crank shaft to control flow of gases through such first passage wherein the improvement comprises an inlet air passage and an exhaust gas passage each communicating with the first passage and one another and a diverter valve moveable in timed relation to operation of the poppet valve selectively to direct, in one position, air into the combustion chamber through the inlet passage and, in another position, exit of exhaust gases through the outlet passage and another position therebetween where air flowing in the inlet passage flows directly to the outlet passage following the exhaust portion of the cycle to assist in driving out the exhaust gases.
Abstract:
A rotary valve system for a motor and the like includes a flow conduit and rotary valve means interposed in the flow conduit. Intermittent sealing means are provided for preventing flow through the flow conduit, comprising a sealing surface intermittently positionable in stationary, sealing relationship across the conduit. Means are also provided for moving the sealing surface into such stationary sealing relationship with the flow conduit, and out of sealing relationship with the flow conduit in a manner correlating with the operation of the rotary valve means, to facilitate sealing as the valve operates.
Abstract:
The intake valve mechanism employs a back-flow valve to prevent undesirable back-flow of gases from a combustion chamber of an internal combustion engine out an intake port of the chamber during a period of time in which a poppet valve for the intake port of the chamber is open. The back-flow valve is positioned between an intake port valve seat and the intake port poppet valve for blocking the intake port in response to pressure in the combustion chamber. To minimize air-fuel resistance through the intake port, a spring is employed for continuously biasing the back-flow valve to track the movement of the poppet valve, the spring having sufficient strength to prevent the back-flow valve from blocking the intake port when the poppet valve is open until the pressure in the combustion chamber reaches a predetermined value.
Abstract:
A four-cycle internal combustion engine having an intake and exhaust valve which operate in response to gas pressure generated in the engine cylinder during the operating cycle of the engine, rather than by external cams mounted on a camshaft. Pressure responsive control valves mounted on the cylinder admit fresh charges of air and fuel beneath the piston in the cylinder during its compression and exhaust strokes and the piston pumps these fresh charges back into the cylinder above the piston through the intake valve during the intake stroke, resulting in twice the air charge of a conventional engine. At the end of the power stroke another pressure responsive valve opens to relieve the pressure generated in the cylinder after ignition, to enable gas pressure previously generated in an air chamber above the cylinder and acting on the exhaust valve to open it to expel the burnt charge. The exhaust passage of the engine is also located so as to place the burnt gases in heat exchange relation with the fresh charge to preheat the charge, increasing the thermal efficiency of the engine.
Abstract:
A new monovalve internal combustion engine of a design specially adapted for screw machine manufacture and including a valve support requiring no lubrication, a combination pull rod and fuel conduit secured to a reciprocating member of a two stage injection pump with the pull rod and both pumps operated by a single compound cam arrangement, a fuel injection nozzle concentric with the valve and with the combustion chamber and having no flexible connections, a fabricated piston rod assembly wherein the crankshaft bearing of the piston rod is greater than the throw of the crankshaft, a fluid seal between the piston and the cylinder against compression losses, a compression chamber which ensures an increasing turbulence of the charge in the cylinder with a maximum at top dead center, and a novel air blower and cleaner system including an arrangement for increasing the volumetric efficiency of the engine and the efficient purging of exhaust gases.