Rotary valve

Abstract

The invention to which this application relates is the provision of an engine or pump which operates in an improved manner. The engine or pump is provided with a cylinder for selective connection with an inlet to allow the fuel and air mixture to be introduced and an exhaust to allow the removal of gases following combustion in the chamber of the cylinder. The connection of the combustion chamber with the inlet and exhaust is selectively controlled by a rotary valve arrangement. The control of the valve arrangement allows the efficient operation of the cylinder and in turn each of the other cylinders of the engine or pump and thereby improve efficiency in the power and drive obtained from the engine or pump.

1 . An engine or pump, said engine or pump comprising: 
 at least one cylinder, each of said cylinders including a piston arrangement linearly movable therealong, the piston arrangement further including; 
 an inlet and an exhaust having open and closed positions,  
 a combustion chamber for the ignition of a gas fuel mixture introduced into the chamber through the inlet, and exhaust gases from the combustion exiting via the exhaust; and  
 a valve for controlling the opening and closing of the inlet and exhaust, said valve having a valve head defining a passage, said passage selectively connecting said combustion chamber with the inlet and the exhaust by rotation of said valve.  
   
   
   
       2 . An engine or pump according to  claim 1  wherein said valve rotates in a reciprocal or rocking manner with rotation in a first direction to allow connection of said inlet and said combustion chamber, and rotation in a second direction to allow connection of said combustion chamber with said exhaust.  
   
   
       3 . An engine or pump according to  claim 2  wherein there is a set time delay following movement in said first direction and prior to movement of said valve in said second direction.  
   
   
       4 . An engine or pump according to  claim 2  wherein said valve has two passages, a first passage for connection of said inlet with said combustion chamber and a second passage for connection of said combustion chamber with said exhaust.  
   
   
       5 . (canceled)  
   
   
       6 . An engine or pump according to  claim 1  wherein when both inlet and exhaust connections are closed, said valve is in a rest position.  
   
   
       7 . (canceled)  
   
   
       8 . (canceled)  
   
   
       9 . (canceled)  
   
   
       10 . (canceled)  
   
   
       11 . An engine or pump according to  claim 1  wherein a drive arrangement between said crank shaft and said valve provides a controlled speed of rotation of said valve and controls the commencement and stop of rotation.  
   
   
       12 . An engine or pump according to  claim 11  wherein movement of said valve is sequentially controlled with respect to the movement of said piston.  
   
   
       13 . (canceled)  
   
   
       14 . (canceled)  
   
   
       15 . (canceled)  
   
   
       16 . An engine or pump, said engine or pump comprising: 
 at least one cylinder each of said cylinders including a piston arrangement linearly movable therealong, the piston arrangement further including 
 an inlet and an exhaust having open and closed positions;  
 a combustion chamber for the ignition of a gas fuel mixture introduced into the chamber through the inlet, and exhaust gases from the combustion exiting via the exhaust; and  
 a valve for controlling the opening and closing of the inlet and exhaust said valve has two passages, a first passage for connection of said inlet with said combustion chamber and a second passage for connection of said combustion chamber with said exhaust, the valve rotates in a reciprocal or rocking manner with rotation in a first direction to allow connection of said inlet and said combustion chamber, and rotation in a second direction to allow connection of said combustion chamber with said exhaust.