Patents by Inventor Guido Vent
Guido Vent 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).
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Patent number: 7937995Abstract: In a method for monitoring an exhaust gas purifying component with gas storage capability for purifying exhaust gases from an internal combustion engine, the exhaust gas purifying component comprises a gas storage material which changes from a first state into a second state upon storage of the gas. A temperature change of the exhaust gas purifying component and/or of the gas storage material, substantially based on a heat tonality of the modification transition, is measured and evaluated.Type: GrantFiled: August 3, 2006Date of Patent: May 10, 2011Assignee: Daimler AGInventors: Clemens Brinkmeier, Christof Schoen, Guido Vent
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Publication number: 20090301069Abstract: A component for cleaning the exhaust gas in an internal combustion engine has a carrier body with a plurality of flow ducts for the exhaust gas. At least some of the walls (3) of the flow ducts have a coating with an oxygen storage capacity. According to the invention, the coating with an oxygen storage capacity is provided for a first delimited region of the carrier body, while a second delimited region of the carrier body is made free of a coating with an oxygen storage capacity or has a coating with a greatly reduced oxygen storage capacity compared to the first region.Type: ApplicationFiled: August 26, 2006Publication date: December 10, 2009Applicant: Daimler AGInventors: Clemens Brinkmeier, Christof Schoen, Guido Vent
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Publication number: 20080314133Abstract: In a method for monitoring an exhaust gas purifying component with gas storage capability for purifying exhaust gases from an internal combustion engine, the exhaust gas purifying component comprises a gas storage material which changes from a first state into a second state upon storage of the gas. A temperature change of the exhaust gas purifying component and/or of the gas storage material, substantially based on a heat tonality of the modification transition, is measured and evaluated.Type: ApplicationFiled: August 3, 2006Publication date: December 25, 2008Applicant: DAIMLER AGInventors: Clemens Brinkmeier, Christof Schoen, Guido Vent
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Patent number: 7428815Abstract: In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.Type: GrantFiled: April 20, 2005Date of Patent: September 30, 2008Assignee: Daimler AGInventors: Peter Fledersbacher, Gernot Hertweck, Steffen Schiedt, Guido Vent, Jürgen Willand
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Publication number: 20050265822Abstract: In a method of operating a compressor near the compressor pumping limit wherein the compressor includes a control arrangement for adjusting the momentary operating state of the compressor, the flow velocity of a mass flow through the compressor in the boundary layer along the wall of the flow passage is determined for detecting operation of the compressor close to the pumping limit from a reversal of the direction of the mass flow vector in the boundary layer and the control arrangement is actuated so as to prevent the compressor from transgressing the pumping limit.Type: ApplicationFiled: April 20, 2005Publication date: December 1, 2005Inventors: Peter Fledersbacher, Gernot Hertweck, Steffen Schiedt, Guido Vent, Jurgen Willand
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Publication number: 20050207915Abstract: In a motor vehicle drive arrangement having an electric motor with a rotor for driving an oil pump and being supported in an air space of a housing by a rotor disk of the rotor of the electric motor which is permanently connected to a pump rotor of the oil pump, a freewheeling mechanism for a mechanical drive of the pump rotor of the oil pump is provided for coupling the oil pump to a vehicle travel drive train of the vehicle drive arrangement when the travel drive train rotates faster than the electric motor.Type: ApplicationFiled: April 20, 2005Publication date: September 22, 2005Inventors: Peter Fledersbacher, Gernot Hertweck, Steffen Schiedt, Guido Vent, Jurgen Willand
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Patent number: 6789511Abstract: A method for operating an internal combustion engine used as a fuel which, special fuel characteristics, during combustion by compression ignition may achieve a favorable efficiency, and may provide consumption advantages over conventional combustion methods using conventional fuels. The fuel used may be straight-run naphtha, which is also known as raw gasoline. The fuel characteristics of this fuel are less expensive than conventional fuels, since expensive further treatment of the fuel may be dispensed with during production.Type: GrantFiled: December 2, 2002Date of Patent: September 14, 2004Assignee: DaimlerChrysler AGInventors: Gernot Hertweck, Dirk Naber, Eckhard Sausen, Guido Vent
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Patent number: 6659082Abstract: In a method for operating a four-stroke internal combustion engine with a homogeneous, lean basic mixture of air and fuel and with compression ignition, the fuel/air ratio formed in the combustion space is variable by means of a controllable inlet member. In order to achieve as rapid adaptation as possible to varied combustion sequences, a measurement of the respective combustion is carried out and the time of closing of the inlet member of the combustion space is regulated, for a next successive cycle, as a function of the signal obtained from this measurement.Type: GrantFiled: September 18, 2000Date of Patent: December 9, 2003Assignee: DaimlerChrysler AGInventors: Igor Gruden, Rolf-Guenther Nieberding, Guido Vent
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Patent number: 6651614Abstract: In a method of operating a diesel internal combustion engine, wherein a homogeneous mixture is formed in the combustion space before a spontaneous ignition by means of fuel injected directly into separately supplied combustion air, which combustion air is admitted to the combustion space in a swirling flow about the longitudinal axis of the cylinder that can be adjusted as regards its swirl intensity by a control element. A control unit adjusts the swirl intensity in a manner coordinated with the injection parameters to provide a homogeneous mixture igniting at a predetermined point for highly effective engine operation with low emissions.Type: GrantFiled: September 28, 2001Date of Patent: November 25, 2003Assignee: Daimler Chrysler AGInventors: Tobias Fl{haeck over (a)}mig-Vetter, Ulrich Heinl, Gernot Hertweck, Katsuyoshi Koyanagi, Thomas Mühleisen, Heinz Öing, Guido Vent, Jürgen Willand
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Publication number: 20030116133Abstract: A method for operating an internal combustion engine used as a fuel which, special fuel characteristics, during combustion by compression ignition may achieve a favorable efficiency, and may provide consumption advantages over conventional combustion methods using conventional fuels. The fuel used may be straight-run naphtha, which is also known as raw gasoline. The fuel characteristics of this fuel are less expensive than conventional fuels, since expensive further treatment of the fuel may be dispensed with during production.Type: ApplicationFiled: December 2, 2002Publication date: June 26, 2003Inventors: Gernot Hertweck, Dirk Naber, Eckhard Sausen, Guido Vent
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Patent number: 6543408Abstract: In internal combustion engines with direct fuel injection an injector injects fuel into the combustion chamber to form an ignitable fuel/air mixture with separately supplied combustion air, with the mixture to be ignited by a spark plug. The fuel is injected in a cone shape and the electrodes are protected from being wetted with fuel and coking if they are disposed outside the lateral surface of the conical fuel jet generated by the injection nozzle. In order to bring ignitable mixture between the electrodes and to ensure optimal operating behavior of the internal combustion engine by improving the combustion sequence, a combustion chamber configuration is provided such that the conical fuel jet is injected in a free jet which is substantially uninfluenced by the combustion chamber perimeter, and the electrodes of the spark plug project into a fuel vortex extending from the lateral surface during injection.Type: GrantFiled: February 6, 2002Date of Patent: April 8, 2003Assignee: DaimlerChrysler AGInventors: Johannes Ernst, Bernhard Heel, Rolf Klenk, Frank Otto, Klaus Rössler, Guido Vent
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Patent number: 6486587Abstract: In a device for controlling an injection valve which can be operated by a piezo-actuator and which comprises a charging and discharging circuit for the controlled charging of the piezo-actuator to a certain piezo-voltage, the charging and discharging circuit includes a power supply with a multitude of voltage levels which correspond to various valve opening positions and a switching device for the controlled switch-over between the plurality of voltage levels.Type: GrantFiled: July 27, 2001Date of Patent: November 26, 2002Assignee: DaimlerChrysler AGInventors: Rolf Klenk, Klaus Rössler, Alexander Stefani, Guido Vent
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Patent number: 6467453Abstract: In a method for forming the mixture in a combustion space of an internal combustion engine, fuel is injected into the combustion space with a varying fuel mass flow during an operational cycle of the internal combustion engine. In one embodiment at least under certain engine operating conditions, three-stage fuel injection is carried out during the compression phase so that a main fuel quantity is injected in a first injection step, an additional fuel quantity with a reduced fuel mass flow is injected in a second injection step and an ignition fuel quantity is injected in a third injection step. In another embodiment, a fuel quantity is injected with a fuel mass flow which is reduced so that it falls steadily from a maximum initial value down to zero and, in accordance with a third method, a fuel quantity is injected during the induction phase with a fuel mass flow which is, at least at times, proportional to the air mass flow.Type: GrantFiled: September 26, 2000Date of Patent: October 22, 2002Assignee: DaimlerChrysler AGInventors: Johannes Ernst, Jens Froehlich, Deborah Mowll, Klaus Roessler, Guido Vent
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Patent number: 6439211Abstract: The invention relates to a four-stroke internal combustion engine with compression ignition and internal exhaust gas recirulation by appropriate actuation of inlet and exhaust valves of at least one cylinder/piston unit. The invention provides for at least one inlet valve and at least one exhaust valve of the cylinder/piston unit to be actuable in such a way that the exhaust valve opening takes place before a charge-exchange top dead center position of a piston between an exhaust stroke and an intake stroke, and the exhaust valve closing takes place after this charge-exchange top dead center position at essentially the same time as the inlet valve opens, in order to displace exhaust gas from a combustion space of the cylinder/piston unit through the open exhaust valve into an exhaust duct and subsequently to suck it back from the exhaust duct into the combustion space.Type: GrantFiled: October 24, 2000Date of Patent: August 27, 2002Assignee: DaimlerChrysler AGInventors: Andreas Juretzka, Klaus Rössler, Guido Vent
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Patent number: 6390056Abstract: In a method for operating a spark ignition engine with direct fuel injection, in which the engine is operated either with charge stratification or with a homogeneous charge, the open and/or closed positions of the inlet and exhaust valves are controlled with variable timing depending on the engine operating condition. The timings are determined on the basis of basic timing settings, which are provided in basic timing performance graphs for operation with charge stratification and homogeneous charge operation. The basic timing settings are modified by means of correction values to raise the temperature of the exhaust gas for internal exhaust-gas recirculation and for causing a movement of the charge in the cylinders.Type: GrantFiled: September 11, 2000Date of Patent: May 21, 2002Assignee: DaimlerChrysler AGInventors: Andreas Hertzberg, Klaus Rössler, Guido Vent
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Publication number: 20020056434Abstract: In a method of operating a diesel internal combustion engine, wherein a homogeneous mixture being formed in the combustion space before a spontaneous ignition by means of fuel injected directly and separately supplied combustion air, the combustion air is admitted to the combustion space in a swirling flow about the longitudinal axis of the cylinder that can be adjusted as regards its swirl intensity by a control element. A control unit adjusts the swirl intensity in a manner coordinated with the injection parameters to provide a homogeneous mixture for highly effective engine operation with low emissions.Type: ApplicationFiled: September 28, 2001Publication date: May 16, 2002Inventors: Tobias Flamig-Vetter, Ulrich Heinl, Gernot Hertweck, Katsuyoshi Koyanagi, Thomas Muhleisen, Heinz Oing, Guido Vent, Jurgen Willand
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Publication number: 20020011762Abstract: In a device for controlling an injection valve which can be operated by a piezo-actuator and which comprises a charging and discharging circuit for the controlled charging of the piezo-actuator to a certain piezo-voltage, the charging and discharging circuit includes a power supply with a multitude of voltage levels which correspond to various valve opening positions and a switching device for the controlled switch-over between the plurality of voltage levels.Type: ApplicationFiled: July 27, 2001Publication date: January 31, 2002Inventors: Rolf Klenk, Klaus Rossler, Alexander Stefani, Guido Vent
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Patent number: 5921216Abstract: In an internal combustion engine for motor vehicles with an engine shutdown driven capability, wherein the engine has intake and exhaust valves with a variable timing valve actuating system permitting the generation of an engine braking torque depending on the state of vehicle operation, the intake and exhaust valves are controlled during shutdown engine driven operation such that at least on type of valves, that is either all the intake or all the exhaust valves remain closed.Type: GrantFiled: May 18, 1998Date of Patent: July 13, 1999Assignee: Daimler-Benz AGInventors: Rainer Ballman, Christian Ederle, Kurt Maute, Guido Vent, Jurgen Willand, Klaus Wunderlich