Magnetic valve recoil device

Patent metadata

Field	Value
Publication number	US-10890133-B2
Application number	US-201916564285-A
Country	US
Kind code	B2
Filing date	Sep 9, 2019
Priority date	Sep 10, 2018
Publication date	Jan 12, 2021
Grant date	Jan 12, 2021

Abstract

The magnetic valve recoil device is intended for a valve-type ignition pre-chamber having a stratification cavity connected by a stratification pipe, which a stratification valve can close, to a combustion chamber housing a primary charge, a stratification injector, and an ignition unit leading to the cavity in order to inject and ignite an initiator charge so as to ignite the primary charge via a torch ignition pre-chamber formed by the stratification valve with the stratification pipe when it is not closing the latter, the valve being otherwise kept in contact with the pipe by a magnetic field created by a magnetic field source.

First claim

The invention claimed is:

1. A magnetic valve recoil device ( 42 ) for a valve-type ignition pre-chamber ( 1 ) for an internal combustion engine ( 2 ), said engine comprising a cylinder head ( 3 ) sitting on top of a cylinder ( 4 ) in order to form, together with a piston ( 31 ), a combustion chamber ( 5 ) into which a primary charge ( 30 ) may be introduced, said cylinder head ( 3 ) receiving a stratification cavity ( 6 ) to which, on the one hand, a stratification injector ( 8 ), which can inject an initiator charge ( 9 ), and, on the other hand, ignition means ( 11 ) lead, said cavity ( 6 ) being connected by a stratification pipe ( 7 ) to the combustion chamber ( 5 ) while a stratification valve ( 13 ) can either close said pipe ( 7 ) and isolate the stratification cavity ( 6 ) from the combustion chamber ( 5 ), with a cavity-side surface ( 14 ) of said valve ( 13 ) then resting on a valve closing seat ( 18 ) by means of a cavity-side valve bearing surface ( 19 ), or form, together with said pipe ( 7 ), a torch ignition pre-chamber ( 23 ) that causes the stratification cavity ( 6 ) to communicate with the combustion chamber ( 5 ) by means of at least one gas ejection orifice ( 24 ) that said pre-chamber ( 23 ) includes, with a chamber-side surface ( 15 ) of said valve ( 13 ) resting in this case on a valve opening seat ( 20 ) by means of a chamber-side valve bearing surface ( 21 ), characterized in that said device comprises:
At least one magnetic material ( 43 ) constituting in whole or in part the stratification valve ( 13 ) and the stratification pipe ( 7 );
At least one source of a magnetic field ( 44 ) the magnetic flux ( 54 ) of which passes through the stratification valve ( 13 ) and the stratification pipe ( 7 ) so as to magnetize said valve ( 13 ) and said pipe ( 7 ).

2. A magnetic valve recoil device according to claim 1 , characterized in that the magnetic field source ( 44 ) is a permanent magnet ( 53 ).

3. A magnetic valve recoil device according to claim 1 , characterized in that the magnetic field source ( 44 ) is a coil of conductive wire ( 51 ) through which an electric current can flow.

4. A magnetic valve recoil device according to claim 3 , characterized in that the amperage of the electric current flowing through the coil of conductive wire ( 51 ) is controlled by a computer ( 52 ).

5. A magnetic valve recoil device according to claim 1 , characterized in that the end of the stratification pipe ( 7 ) which receives the valve opening seat ( 20 ) is a part ( 49 ) that is added to said pipe ( 7 ) and consists of a non-magnetic material ( 50 ).

6. A magnetic valve recoil device according to claim 1 , characterized in that the cavity-side surface ( 14 ) comprises a circular peripheral recess ( 45 ) forming an annular distribution chamber ( 46 ), with the outside diameter of the cavity-side valve bearing surface ( 19 ) being equal to or less than the inside diameter of said annular chamber ( 46 ).

7. A magnetic valve recoil device according to claim 1 , characterized in that the diameter of the end of the stratification pipe ( 7 ) leading to the combustion chamber ( 5 ) is greatly reduced locally so as to form a gas throttling orifice ( 47 ), said end thus forming, together with the chamber-side surface ( 15 ), a valve damping chamber ( 48 ) having a maximum volume when the cavity-side valve bearing surface ( 19 ) is in contact with the valve closing seat ( 18 ) with which it cooperates.

8. A magnetic valve recoil device according to claim 7 , characterized in that the outside diameters of the chamber-side valve bearing surface ( 21 ) and the valve opening seat ( 20 ) are close to the outside diameter of the stratification valve ( 13 ), while the inside diameters of said bearing surface ( 21 ) and said seat ( 20 ) are close to the diameter of gas throttling orifice ( 47 ).

Assignees

• Rabhi Vianney

Inventors

• Rabhi Vianney

Classifications

• F02D41/3094

  the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder · CPC title

• F02M2200/20

  Fuel-injection apparatus with permanent magnets · CPC title

• F02B19/1071

  pre-combustion chamber having only one orifice,(i.e. an orifice by means of which it communicates with the cylinder); the intake system comprising two distinct intake conduits · CPC title

• F02B17/00 Primary

  Engines characterised by means for effecting stratification of charge in cylinders · CPC title

• F02D41/3023 Primary

  a mode being the stratified charge spark-ignited mode · CPC title