Patents by Inventor Marc Lejeune

Marc Lejeune has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20150083056
    Abstract: A vehicle internal combustion engine arrangement includes an internal combustion reciprocating piston engine, and an exhaust line capable of collecting exhaust gases from the engine, a waste heat recovery system carrying a working fluid in a loop, in which the working fluid is successively compressed, heated in a heat exchanger by at least one engine fluid, and expanded in a first expander, a first compressor located in the exhaust line and mechanically connected to the first expander of the waste heat recovery system.
    Type: Application
    Filed: May 10, 2012
    Publication date: March 26, 2015
    Applicant: RENAULT TRUCKS
    Inventors: Marc Lejeune, Dimitri Lortet
  • Patent number: 8726656
    Abstract: A power assembly includes an internal combustion engine including an air intake line and an exhaust gas line having at least one heat exchanger. The power assembly further includes a Brayton cycle system capable of providing additional power to the main internal combustion engine and that includes a gas compressor, a fuel burning heater and a turbine linked to the compressor so that air is drawn into the compressor where it is pressurized, the pressurized air is further heated by flowing through at least one heat exchanger where it exchanges heat with exhaust gases from the main internal combustion engine, the heated and pressurized air is further heated by the fuel burning heater and is thereafter expanded through the turbine where a first fraction of the work extracted by the turbine is used to drive the compressor and a second fraction of the work extracted by the turbine is used to bring additional energy.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: May 20, 2014
    Assignee: Renault Trucks
    Inventor: Marc Lejeune
  • Publication number: 20110265470
    Abstract: An energy recovery system includes an exhaust line which is capable of collecting exhaust gas from an exhaust manifold of the engine and which is equipped with a particulate filter, a secondary line which is thermally linked with, but distinct from, the exhaust line, and which carries a fluid. The particulate filter has a filtering part in which exhaust gases can flow and a heat exchanging part in which the fluid can flow, the filtering part and heat exchanging part being arranged to transfer heat by conduction from the exhaust gases to said fluid. The secondary line is connected to energy recovery means capable of recovering energy from the heat.
    Type: Application
    Filed: December 30, 2008
    Publication date: November 3, 2011
    Inventors: Marc Lejeune, Eduard Iojoiu
  • Publication number: 20110239643
    Abstract: A power assembly includes an internal combustion engine including an air intake line and an exhaust gas line having at least one heat exchanger. The power assembly further includes a Brayton cycle system capable of providing additional power to the main internal combustion engine and that includes a gas compressor, a fuel burning heater and a turbine linked to the compressor so that air is drawn into the compressor where it is pressurized, the pressurized air is further heated by flowing through at least one heat exchanger where it exchanges heat with exhaust gases from the main internal combustion engine, the heated and pressurized air is further heated by the fuel burning heater and is thereafter expanded through the turbine where a first fraction of the work extracted by the turbine is used to drive the compressor and a second fraction of the work extracted by the turbine is used to bring additional energy.
    Type: Application
    Filed: September 26, 2008
    Publication date: October 6, 2011
    Applicant: Renault Trucks
    Inventor: Marc LeJeune
  • Publication number: 20110167809
    Abstract: An engine arrangement including an internal combustion engine and an energy recovering system includes an exhaust line collecting exhaust gas from the engine, a filter having an active portion inserted between two successive parts of the exhaust line, in order to hold the particles contained in the exhaust gas, and filter rotating means designed to rotate the filter so as to shift the active portion of the filter, a secondary line carrying intake air towards an area of said filter distinct from the active portion, according to a direction opposite from an exhaust gas flowing direction inside the filter, so as to sweep the particles away from the filter and release them downstream, inside the secondary line. The secondary line includes a first arrangement, located downstream from the filter, for burning the particles and thereby heating air flowing in the secondary line, and a second arrangement capable of recovering the heat into work.
    Type: Application
    Filed: September 26, 2008
    Publication date: July 14, 2011
    Applicant: Renault Trucks
    Inventors: Iyad Balloul, Michel Vanvolsem, Marc Lejeune
  • Publication number: 20100263356
    Abstract: An arrangement is provided for an exhaust line of an internal combustion engine including a fuel burner located upstream of a diesel particulate filter, and a selective catalytic conversion unit. The arrangement includes a turbine connected to an energy recovering arrangement interposed on the engine exhaust line between the diesel particulate filter and the SCR unit. It is possible to convert into useful work the thermal energy liberated by the filter regeneration which, in a conventional exhaust line is wasted, Further, the turbine has the further effect of lowering the temperature entering the SCR unit which, in a conventional exhaust line, is fed with high temperature exhaust gas that has a detrimental effect on the life span of the SCR unit.
    Type: Application
    Filed: December 21, 2007
    Publication date: October 21, 2010
    Applicant: Renault Trucks
    Inventor: Marc Lejeune
  • Patent number: 7591255
    Abstract: Internal combustion engine wherein a cooling medium inlet of an EGR (Exhaust Gas Recirculation) heat exchanger is fluidly connected to a turbine outlet of a turbocharger so as to use the exhaust gas outputted by the turbine as a coolant.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: September 22, 2009
    Assignee: Renault Trucks
    Inventor: Marc Lejeune
  • Publication number: 20090173060
    Abstract: An exhaust gas control apparatus is provided for an internal combustion engine having at least two cylinders, a turbine, and an exhaust manifold collecting a flow of exhaust gases formed in each cylinder towards the turbine. The exhaust manifold has an inlet port connected to each cylinder and an output port upon which the turbine is secured. The exhaust gas control apparatus includes at least one seal positioned between two adjacent inlet ports, each seal being articulated relative to the exhaust manifold and being capable of sealing one of the two adjacent inlet ports to reduce the internal volume of the exhaust manifold available for the flow of exhaust gas. The apparatus of the invention makes it possible to reduce the internal volume of the exhaust manifold according to the engine cycle.
    Type: Application
    Filed: November 8, 2005
    Publication date: July 9, 2009
    Applicant: RENAULT TRUCKS
    Inventors: Dimitri Lortet, Marc Lejeune
  • Publication number: 20090090336
    Abstract: Internal combustion engine wherein a cooling medium inlet of an EGR (Exhaust Gas Recirculation) heat exchanger is fluidly connected to a turbine outlet of a turbocharger so as to use the exhaust gas outputted by the turbine as a coolant.
    Type: Application
    Filed: December 23, 2005
    Publication date: April 9, 2009
    Applicant: Renault Trucks
    Inventor: Marc Lejeune
  • Patent number: 7367327
    Abstract: Method and device (1) for boosting an intake pipe (4) of a turbocharged engine (5) with compressed gas. The method includes storing gases in a vessel (12) at a pressure greater than atmospheric pressure and, afterwards in injecting the gases into the intake pipe (4) in order to temporarily increase an inlet pressure during low-speed operation phases. The inventive device includes a connection for temporarily and alternately connecting the storing vessel (12) to an exhaust manifold (6) for recovering the gases during engine brake phases or to the intake pipe (4) during the temporary low-speed operation phases. The connection comprises a heat exchanger (10) mounted between the exhaust manifold (6) and the vessel (12).
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: May 6, 2008
    Assignee: Renault Trucks
    Inventors: Christian Piriou, Marc Lejeune
  • Publication number: 20070113553
    Abstract: Method and device (1) for boosting an intake pipe (4) of a turbocharged engine (5) with compressed gas. The method includes storing gases in a vessel (12) at a pressure greater than atmospheric pressure and, afterwards in injecting the gases into the intake pipe (4) in order to temporarily increase an inlet pressure during low-speed operation phases. The inventive device includes a connection for temporarily and alternately connecting the storing vessel (12) to an exhaust manifold (6) for recovering the gases during engine brake phases or to the intake pipe (4) during the temporary low-speed operation phases. The connection comprises a heat exchanger (10) mounted between the exhaust manifold (6) and the vessel (12).
    Type: Application
    Filed: January 22, 2007
    Publication date: May 24, 2007
    Applicant: RENAULT TRUCKS
    Inventors: Christian Piriou, Marc Lejeune
  • Patent number: 4147390
    Abstract: Nodule dredge comprising one or more of the following: convergent wall device, e.g., "horn member", for accelerating liquid flow through the apparatus; comb or grid-like collecting or lifting device that can lift nodules into accelerated flow without necessarily lifting an entire layer of silt, especially where silt is relatively loose; inclined surface to receive and raise nodules driven down stream by accelerated flow, while silt is removed; and collection chamber below nodule path defined by inclined surface, to receive nodules from inclined surface.
    Type: Grant
    Filed: January 30, 1978
    Date of Patent: April 3, 1979
    Assignee: Union Miniere S.A.
    Inventors: Jacques Deliege, Michel Giot, Vsevolod Obolensky, Luc Deconinck, Marc Lejeune