Fuel efficient valve mechanism for internal combustion engines

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• said valve actuator including a linkage anchor member, a crank member pivoted to said linkage anchor member and a link rod extending from an arm of said crank member to said valve piston and being pivoted to each thereof;
• and wherein said second group of valve actuator components includes a power control component which moves in response to movement of said acceleration control of said engine, said power control component being configured to move said link age anchor member further away from said outlet end of said fuel inlet valve sleeve in response to power increasing movement of said acceleration control and to advance said linkage anchor member towards said outlet end of said sleeve in response to power decreasing movement of said acceleration control.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said valve piston is proportioned to locate an end surface of the valve piston at said outlet end of said sleeve when said inlet valve is closed and said engine is operating at minimum power output.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said power piston of said engine reciprocates within an engine block having an engine head member secured thereto which head member has a recess forming a combustion chamber extension of said engine cylinder, wherein said fuel inlet valve extends within said head member with said outlet end of said valve sleeve being at said recess, said valve sleeve and valve piston and the path of travel of said valve piston being inclined relative to the direction of travel of said power piston of said engine, said valve piston having an end region which protrudes into said recess when the fuel inlet valve is closed and the engine is operating at minimum power output.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said fuel inlet port in said sidewall of said sleeve has a first end which is closest to said outlet end of said sleeve and an opposite end which is further away from said outlet end of said sleeve, wherein said fuel inlet port is of minimal width at said first end thereof and becomes progressively wider towards said second end thereof.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said fuel inlet port in said sidewall of said sleeve has a first end which is closest to said outlet end of said sleeve and an opposite end which is further away from said outlet end of said sleeve, wherein said fuel inlet port is of maximum width at said first end thereof and becomes progressively narrower towards said second end thereof.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein components of said first and second groups of valve actuator components are positioned to shorten said path of travel of said valve piston as said path of travel is moved away from said outlet end of said sleeve and to lengthen said path of travel when said path of travel is moved towards said outlet end of said sleeve.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said valve actuator means shorten said path of travel of said valve piston as said path of travel is moved away from said outlet end of said sleeve and lengthen said path of travel when said path of travel is moved towards said outlet end of said sleeve.

In an internal combustion engine which has at least one power piston that reciprocates within an engine cylinder and which is coupled to an engine crankshaft and having a camshaft which is turned by the crank shaft and having an acceleration control which is movable to vary the power output of the engine, the improvement comprising:

• a fuel inlet valve having a sleeve with an outlet end that opens into said engine cylinder and having at least one fuel inlet port in a sidewall of the sleeve, said fuel inlet valve further having a valve piston which is movable along a path of travel which extends axially within said sleeve, said valve piston being movable away from said outlet end through open positions at which said inlet port is increasingly communicated with said outlet end and being movable towards said outlet end into closed positions at which fuel flow from said inlet port to said outlet end is blocked by the valve piston, and
• a valve actuator having a first group of components interlinked to said valve piston which cyclically move said valve piston between open and closed positions in response to turning of said camshaft and having a second group of components interlinked to the valve piston which shift said path of travel away from said outlet end in response to power increasing movements of said acceleration control and which shift said path of travel to wards said outlet end in response to power decreasing movements of said acceleration control,
• wherein said engine has an engine block in which said cylinder is situated and has a head member overlaying said engine block, said head member having a recess forming an extension of the cylinder combustion chamber, wherein said valve actuator means protrude said valve piston into said recess when said engine is operating at minimum power output and retract said valve piston away from said recess when said engine is operating at higher power outputs.