Abstract:
The invention relates to a head (1) of cylinder (2) for a four stroke combustion engine with a valve gear with lifting valves. The head (1) of each cylinder (2) is provided with one main conduit (3), annular shaped orifice (4) leading into the cylinder (2) its axis (5) being situated in the direction of the main axis (6) of cylinder (2) and orifice (4) of main conduit (3), provided with interior valve seat (8) and exterior valve seat (9). Inside the interior valve seat (8) and exterior valve seat (9), in its closed position an annular plate (12) is situated of the sole lifting valve (7) of cylinder (2) provided by at least one stem (11). The main conduit (3) in the head (1) is divided into an inlet conduit (15) and exhaust conduit (16), where the inlet conduit (15) is provided with a valve (17) and/or with a slide valve (18).
Abstract:
Eine Walzenschieber-Anordnung, insbesondere zur Ladungssteuerung einer Brennkraftmaschine umfasst einen quer zum Walzenschieber in einer Ausnehmung eines Gehäuses angeordneten, einen Zuströmkanal abschnittsweise begrenzenden Gleitring zur gleitbeweglich dichten Auflage auf der Außenkontur des Walzenschiebers, wobei der Gleitring in der Ausnehmung unter Zwischenschaltung eines Dichtelementes beweglich angeordnet ist. Um den Gleitring lediglich in Sperrstellung des Walzenschiebers dicht aufliegen zu lassen wird vorgeschlagen, dass der Gleitring bei den Zuströmkanal offen steuernden Durchgangskanal mittels einer Einrichtung von der Außenkontur des Walzenschiebers entfernt bzw. abgehoben angeordnet ist.
Abstract:
An internal combustion engine has a stator passage leading to a cylinder. An intake poppet valve is disposed between the cylinder and stator passage, and a rotary valve adjoins the opposite end of the stator passage. The rotary valve has a rotor with an elongated tapered rotor passage partially in registration with the stator passage. The rotor is driven by the crankshaft and is adjustable in phase to vary the time of opening and closing of the rotary valve, and is axially shiftable to vary the valve opening duration. A control system responsive to engine speed and load independently varies the rotary valve phase and duration for optimum engine operation.