Abstract:
PURPOSE: To allow a wide timing range of a vent and to improve engine performance by providing a multi-layer passage automatically sucking and discharging air in two stages and feeding and discharging much air to an internal combustion engine. CONSTITUTION: When a piston descends, a quick pressure drop occurs in a combustion chamber 3, and its acting force is applied to the head of an inner valve. When this acting force becomes larger than the acting force to a holding pin 40A by inner valve control springs 41A, 42A, the inner valve is displaced to an opening position independently of an outer valve and allows the flow of the air-fuel mixture of the combustion chamber 3 from a port through the vent 23A of the outer valve. The operating speed, period and displacement are determined by the level of the load of an inner valve spring, and the slot 24A of the holding pin 40A determines the maximum displacement range of the inner valve. The action of the inner valve is independent of the action of the outer valve, thus this valve mechanism automatically responds to the changed timing, period and displacement, and its useful output range is remarkably expanded.
Abstract:
A two piece intake or exhaust valve for internal combustion engines comprising an inner and an outer valve which can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the center of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporating an independent actuation means by way of pressure differentials created by the induction cycle, and/or directional inertia factors of the mechanically controlled valve element.
Abstract:
A two piece intake or exhaust valve for internal combustion engines comprising an inner and an outer valve which can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the center of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporating an independent actuation means by way of pressure differentials created by the induction cycle, and/or directional inertia factors of the mechanically controlled valve element.
Abstract:
An inner and an outer valve can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the centre of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporates an independent actuate by way of pressure differentials created by the inductors cycle, and and/or of directional inertia factors of the mechanically controlled valve element.
Abstract:
An inner and an outer valve can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the centre of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporates an independent actuate by way of pressure differentials created by the inductors cycle, and and/or of directional inertia factors of the mechanically controlled valve element.
Abstract:
An inner and an outer valve can be designed with orbicular heads. The inner valve including a stem of a smaller outside diameter than the outer valve. The outer valve including a hollow stem large enough to accept the inner valve, and also including a valve seat in the centre of its bottom face to seat the inner valve. The head, or base, being equipped with one or more vents which communicate between the intake port and the combustion chamber and being releasably opened and sealed off by the inner valve. The vented valve unit incorporates an independent actuate by way of pressure differentials created by the inductors cycle, and and/or of directional inertia factors of the mechanically controlled valve element.