Patents Represented by Attorney, Agent or Law Firm Klaus J. Bach
  • Compressor and turbine wheel for a secondary air feed device
    Patent number: 7438529
    Abstract: In a compressor and turbine wheel for a secondary air feed device formed as a single component, a rotor which includes a center disc structure consisting of at least two discs of different materials is provided at one side with compressor blades and on the opposite side with turbine blades, and the discs consist of an alloy based on Al, Mg, Ti, Fe, or Ni and are preferably arranged in axially spaced relationship with a disc carrier of a plastic material disposed in the space between the two bladed discs.
    Type: Grant
    Filed: April 6, 2006
    Date of Patent: October 21, 2008
    Assignee: Daimler AG
    Inventors: Peter Fledersbacher, Hans-Georg Lehmann, Martin Schlegl, Holger Stark
  • Method of operating an internal combustion engine
    Patent number: 7438045
    Abstract: In a method of operating an internal combustion engine with a switch-over capability between a compression ignition mode of operation and a spark ignition mode of operation in higher load ranges which includes a cam-operated valve drive with a valve control providing, in the compression ignition mode of operation, for an increased valve overlap of the valve opening times, smooth engine operation and optimal exhaust gas emissions are obtained also during rapid load changes upon changing the engine operating mode as the change-over is accompanied by changes of the injection parameters, the throttling parameter and the valve control, which are coordinated with respect to one another as the valve control is switched over by changing the amplitude and phase position of the valve stroke of at least one of the inlet and outlet valves.
    Type: Grant
    Filed: January 9, 2007
    Date of Patent: October 21, 2008
    Assignee: Daimler AG
    Inventors: Rüdiger Herweg, Matthias Pfau, Jochen Schäflein, Mayk Stelter
  • Double clutch transmission
    Patent number: 7437964
    Abstract: In a double clutch transmission of a drive train of a vehicle with rear-axle drive or all-wheel drive and a front longitudinally mounted drive engine, wherein concentric central shafts of the double clutch transmission are supported by first and second rolling bearings in an X arrangement, third and fourth rolling bearings are provided by which the transmission output shaft is supported and the rolling bearings are preloaded and also disposed in an X arrangement in relation to the rolling bearings supporting the transmission output shaft.
    Type: Grant
    Filed: January 14, 2006
    Date of Patent: October 21, 2008
    Assignee: Daimler AG
    Inventor: Carsten Gitt
  • Two-chamber cartridge
    Patent number: 7431179
    Abstract: In a two chamber cartridge with chambers arranged axially one after the other, wherein the front chamber in a front part of the cartridge interior is divided by a double wall insert into an outer partial chamber and an inner partial chamber which are both closed at the rear ends by pistons and the rear chamber is formed by a beaker which is inserted into the rear of the cartridge and has a beaker bottom with a pin extending from the beaker bottom through an annular piston closing the beaker, the rear end of the double wall insert abuts the annular piston closing the beaker and the annular piston includes passages leading to gap between the two spaced walls of the double wall insert and the two front partial chambers and the intermediate space are in communication with a mouthpiece space at the front end of the cartridge.
    Type: Grant
    Filed: January 3, 2006
    Date of Patent: October 7, 2008
    Inventor: Frank Georg Ritter
  • Internal combustion engine comprising an exhaust gas turbocharger
    Patent number: 7428813
    Abstract: In an internal combustion engine having an exhaust gas turbocharger with an exhaust gas inlet structure including two exhaust gas flow passages in communication with two exhaust ducts via a rotary cylinder valve for controlling the exhaust gas flow, the valve includes two inlet openings for directing the flow to the inlet flow passages of the turbine and a recess which when disposed over the exhaust gas flow passages permits exhaust gas to flow from one to the other of the exhaust gas ducts, the interior of the valve being in communication with a bypass line for bypassing the turbine.
    Type: Grant
    Filed: June 11, 2005
    Date of Patent: September 30, 2008
    Assignee: Daimler AG
    Inventors: Helmut Finger, Erwin Schmidt, Siegfried Sumser
  • Method of operating a compressor near the compressor pumping limit and compressor
    Patent number: 7428815
    Abstract: 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: Grant
    Filed: April 20, 2005
    Date of Patent: September 30, 2008
    Assignee: Daimler AG
    Inventors: Peter Fledersbacher, Gernot Hertweck, Steffen Schiedt, Guido Vent, Jürgen Willand
  • Cooling circuit for an internal combustion engine
    Patent number: 7424869
    Abstract: In a cooling circuit for an internal combustion engine of a motor vehicle including a pump device arranged upstream of the internal combustion engine, a cooler having an inlet side connected to a coolant outlet of the internal combustion engine and an outlet connected via a coolant line to the inlet side of the pump device, a cooler bypass line extending from the outlet side of the internal combustion engine to the inlet side of the pump device while bypassing the cooler and a switching valve arranged in the coolant line between the cooler and the pump device, a switching valve bypass duct is provided bypassing the switching valve and including a valve device which is open when the engine is shut down for reliable ventilation of the second coolant line during filling of the cooling circuit.
    Type: Grant
    Filed: September 5, 2007
    Date of Patent: September 16, 2008
    Assignee: Daimler AG
    Inventor: Reiko Haase
  • Motor vehicle drive arrangement
    Patent number: 7421928
    Abstract: 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: Grant
    Filed: April 20, 2005
    Date of Patent: September 9, 2008
    Assignee: Daimler AG
    Inventors: Andreas Klaus, Tobias Ostertag
  • Motor vehicle drive arrangement
    Patent number: 7413417
    Abstract: In a motor vehicle drive arrangement oil is supplied to a drive gear mechanism and other drive elements by an oil pump which is driven only by an electric motor and is arranged in a space in which one or more torque transmission devices such as a hydrodynamic torque converter, an operable drive clutch and at least one electric motor for forming a hybrid drive are disposed and which is formed between the oil pump and electric motor, on the one hand, and the vehicle travel drive motor on the other, the oil pump is disposed around a shaft transmitting the drive torque to the transmission and is surrounded by the electric motor driving the pump.
    Type: Grant
    Filed: April 20, 2005
    Date of Patent: August 19, 2008
    Assignee: Daimler AG
    Inventors: Andreas Klaus, Tobias Ostertag
  • Internal combustion engine including a gas pressure container assigned to the cylinders, and method for operating the engine
    Patent number: 7412963
    Abstract: In an internal combustion engine having cylinders connected by means of controllable brake valves to a common gas pressure container which is in communication, by way of an outflow line with an outflow valve, with the exhaust strand of the internal combustion engine, an inlet gas pressure container is connected to the intake tract of the internal combustion engine and is in communication with the common pressure container by means of a recirculation line having a controllable check valve arranged therein permitting the establishment of various engine operating and control features.
    Type: Grant
    Filed: July 13, 2007
    Date of Patent: August 19, 2008
    Assignee: Daimler AG
    Inventors: Wolfram Schmid, Siegfried Sumser
  • Compressor in the induction tract of an internal combustion engine
    Patent number: 7412830
    Abstract: In a compressor in the induction tract of an internal combustion engine with a compressor by which combustion air can be compressed to an increased boost pressure and which includes a compressor wheel rotatably mounted in a compressor housing with a main inlet duct in the flow path to the compressor wheel, and an auxiliary inlet duct joining the main inlet duct in the area of the compressor wheel, an adjustable swirl device is provided in the auxiliary intake duct, which comprises two separate, interacting swirl structures with a plurality of guide vanes distributed over the periphery and arranged so that the flow cross-section between the guide vanes of the two swirl structures can be changed by an adjusting motion of at least one swirl structure, the vane height of the guide vanes of the smaller swirl structure being 5% to 35% of the vane height of the guide vanes of the larger swirl structure.
    Type: Grant
    Filed: December 22, 2005
    Date of Patent: August 19, 2008
    Assignee: Daimler AG
    Inventor: Siegfried Sumser
  • Engine braking method for a supercharged internal combustion engine
    Patent number: 7409943
    Abstract: In an engine braking method for a supercharged internal combustion engine, wherein combustion air, which is under boost pressure and is supplied to the cylinders under the control of engine inlet and outlet valves, is compressed in the cylinders and is subsequently discharged into the exhaust tract, engine braking takes place in a two-stroke operating mode.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: August 12, 2008
    Assignee: Daimler AG
    Inventors: Michael Benz, Stephan Krätschmer, Erwin Schmidt, Alexander Stadelmaier, Siegfried Sumser
  • Arrangement for controlling an internal combustion engine
    Patent number: 7409945
    Abstract: In an arrangement for controlling an internal combustion engine, comprising an electronic engine control unit, an injector with an injection needle for controlling the injecting of fuel into a combustion chamber of the engine and a connecting line extending between the electronic engine control unit and the injector for the transmission if signals therebetween, an intelligent electronic component is integrated into the injector including an electronic memory unit, a computation unit, an energy storage device forming an energy supply for the electronic component and also a measuring unit for opto-electronically detecting the movement of the fuel injector needle.
    Type: Grant
    Filed: June 22, 2007
    Date of Patent: August 12, 2008
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Jörg Remele, Uwe Rödl, Andreas Schneider, Albrecht Debelak
  • Drive unit for a hybrid motor vehicle
    Patent number: 7410444
    Abstract: In a drive unit for a hybrid motor vehicle including an internal combustion engine and a dynamoelectric machine to be connected to a transmission of the motor vehicle, wherein the drive unit comprises an input shaft connected to the internal combustion engine, an output shaft connected to the dynamoelectric machine for rotation therewith and a clutch for connecting the input shaft to the output shaft, the clutch includes centrifugal actuators for causing engagement of the clutch upon rotation at a speed in excess of a threshold value, springs counteracting the centrifugal actuators for causing the release of the clutch at a speed below the threshold value, and an electromagnetic actuators for causing engagement of the clutch at a speed below the threshold value to permit startup operation of the internal combustion engine by the dynamoelectric machine.
    Type: Grant
    Filed: February 24, 2006
    Date of Patent: August 12, 2008
    Assignee: MTU Friedrichshafen GmbH
    Inventors: Michael Groddeck, Joachim Huster
  • Circuit for analyzing a signal reflected from an object
    Patent number: 7411171
    Abstract: In a circuit arrangement for analyzing a clocked signal reflected from an object, particularly an optical signal, wherein at least one radiation emitter which, for providing the clocked signal, is connected to a clocking signal generator, and at least one radiation receiver which receives radiation pulses emitted by the radiation emitter and reflected from the object, and a comparator by which the output signal pulses of the radiation are compared with reference pulses whose amplitudes depend on output signals of the comparator, are provided, the reference signal pulses occur concurrently with the radiation impulses received by the radiation receiver and the impulses received by the radiation receiver are compensated for each by a respective internal reference impulse before their analysis in the circuit arrangement.
    Type: Grant
    Filed: May 25, 2006
    Date of Patent: August 12, 2008
    Assignee: ME-IN GmbH
    Inventors: Andres Richter, Stefan Grohmann, Jörg Lummerzheim
  • Bottom plate for a crankcase
    Patent number: 7398756
    Abstract: In a bottom plate for closing a crankcase of an internal combustion engine wherein the bottom plate includes openings and channels for collecting and conducting fluids, the bottom plate consists of a number of individual plates which are joined together after the channels and openings have been cut into the individual plates by laser beam cutting or water beam cutting.
    Type: Grant
    Filed: May 31, 2006
    Date of Patent: July 15, 2008
    Assignee: MTU Friedrichshafen GmbH
    Inventor: Georg Ruetz
  • Method for the operation of an internal combustion engine
    Patent number: 7398744
    Abstract: In a method of operating a 4-stroke internal combustion engine selectively in a compression ignition operation, in which an outlet valve of the internal combustion engine is closed at a comparatively early closing time point with respect to a crank angle (?) and in spark ignition operation, in which the outlet valve is closed at a comparatively late closing time point with respect to the crank angle (?), during the changeover from the spark ignition mode of operation to the compression ignition mode of operation, the closing time point of the outlet valve is transferred from the late closing time point to the early closing time point in steps distributed over multiple 4-stroke cycles.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: July 15, 2008
    Assignee: Daimler AG
    Inventors: Götz Brachert, Rudiger Herweg, Kai Kanning, Matthias Pfau, Jochen Schäflein, Hans-Jürgen Weimann
  • Instrument support holder
    Patent number: D576615
    Type: Grant
    Filed: February 10, 2006
    Date of Patent: September 9, 2008
    Inventor: Harald Richter
  • Instrument support holder
    Patent number: D576631
    Type: Grant
    Filed: December 6, 2004
    Date of Patent: September 9, 2008
    Inventor: Harald Richter
  • Control handle for carts
    Patent number: D576774
    Type: Grant
    Filed: August 2, 2007
    Date of Patent: September 9, 2008
    Assignee: Expresso Deutschland GmbH
    Inventor: Stefan Boller