Guide stud valve
OwnerVianney Rabhiinventor
Life of this patent
Estimating the term…
Abstract
The stud-oriented valve (50) includes a valve main body (8) which is housed in a lamination duct (7) and which exhibits a closure axial face (10) which can rest on a duct closure seat (11) for isolating a lamination cavity (4) from a combustion chamber (5), said body (8) also having a centering peripheral surface (12), an opening axial face (13) which may rest on a chamber-side valve stop (14), and at least one orientation stud (15) which protrudes from the opening axial face (13), said stud (15) being capable to slide through a guide axial orifice (17) that is fixed to the lamination duct (7).
Claims10
An oriented valve (50) for a valve ignition prechamber (1) that is arranged in an internal combustion engine cylinder head (2) that covers a combustion chamber (3), said valve ignition prechamber (1) having a lamination cavity (4) in which emerges ignition means (5) and at least one lamination injector (6), said lamination cavity (4) being connected to the combustion chamber (3) by a lamination duct (7) that houses the oriented valve (50) in order to form with the oriented valve (50) a torch ignition prechamber (9) that connects the lamination cavity (4) with the combustion chamber (5) by means of at least one gas ejection orifice (16), the oriented valve (50) comprising:
- a valve main body (8) housed with small play in the lamination duct (7);
- a closure axial face (10) arranged on the valve main body (8) and configured to rest in whole or in part on a duct closure seat (11) which the lamination duct (7) exhibits in order to close the lamination duct (7) and isolate the lamination cavity (4) from the combustion chamber (5);
- a centering peripheral surface (12) located at a periphery of the valve main body (8), said peripheral surface (12) being configured to contact an internal wall of the lamination duct (7) to center said valve main body (8) in said lamination duct (7);
- an opening axial face (13), which is arranged on the valve main body (8) opposite the closure axial face (10) and which is configured, when the closure axial face (10) does not rest on the duct closure seat (11), to bear on a chamber-side valve stop (14) arranged in the lamination duct (7);
- an orientation stud (15), which is fixedly secured to the valve main body (8) and which protrudes from the opening axial face (13);
- a guide axial orifice (17), arranged in or near the chamber-side valve stop (14) and in which is housed the orientation stud (15) with small radial play, said orientation stud (15) configured to slide longitudinally in said axial orifice (17) without ever completely coming out;
- and
- a valve damping chamber (18) formed by the lamination duct (7), the opening axial face (13), and the chamber-side valve stop (14),
- wherein a volume of said valve damping chamber (18) is maximum when the closure axial face (10) rests on the duct closure seat (11), and minimum when the opening axial face (13) rests on the chamber-side valve stop (14), and
- wherein at least one gas throttling orifice (20) connects the valve damping chamber (18) and the combustion chamber (3) so that a gas (19) can flow between the valve damping chamber (18) and the combustion chamber (3) via said throttling orifice (20).
An oriented valve for a valve ignition prechamber (1) that is arranged in an internal combustion engine cylinder head (2) that covers a combustion chamber (3), said valve ignition prechamber (1) having a lamination cavity (4) in which emerges ignition means (5) and at least one lamination injector (6), said lamination cavity (4) being connected to the combustion chamber (3) by a lamination duct (7) that houses the oriented valve (50) in order to form with the oriented valve (50) a torch ignition prechamber (9) that connects the lamination cavity (4) with the combustion chamber (5) by means of at least one gas ejection orifice (16), the oriented valve (50) comprising:
- a valve main body (8) housed with small play in the lamination duct (7);
- a closure axial face (10) arranged on the valve main body (8) and configured to rest in whole or in part on a duct closure seat (11) which the lamination duct (7) exhibits in order to close the lamination duct (7) and isolate the lamination cavity (4) from the combustion chamber (5);
- a centering peripheral surface (12) located at a periphery of the valve main body (8), said peripheral surface (12) being configured to contact an internal wall of the lamination duct (7) to center said valve main body (8) in said lamination duct (7);
- an opening axial face (13), which is arranged on the valve main body (8) opposite the closure axial face (10) and which is configured, when the closure axial face (10) does not rest on the duct closure seat (11), to bear on a chamber-side valve stop (14) arranged in the lamination duct (7);
- an orientation stud (15), which is fixedly secured to the valve main body (8) and which protrudes from the opening axial face (13);
- a guide axial orifice (17), arranged in or near the chamber-side valve stop (14) and in which is housed the orientation stud (15) with small radial play, said orientation stud (15) configured to slide longitudinally in said axial orifice (17) without ever completely coming out;
- and
- a valve damping chamber (18) formed by the lamination duct (7), the opening axial face (13), and the chamber-side valve stop (14),
- wherein a volume of said valve damping chamber (18) is maximum when the closure axial face (10) rests on the duct closure seat (11), and minimum when the opening axial face (13) rests on the chamber-side valve stop (14),
- wherein the centering peripheral surface (12) has a conical profile (21).
Dependencies are inferred from the claim text.