Abstract: A method for operating a reciprocating internal combustion engine in an engine braking mode includes, in a working cycle of the engine braking mode, a first outlet valve of a first cylinder is closed for a first time, then opened for a first time, and subsequently closed for a second time, and then opened for a second time, in order to thereby discharge gas that has been compressed in the first cylinder from the first cylinder by a cylinder piston. The outlet valve is held open after the first opening and prior to the second closing long enough for the cylinder to be filled with gas that flows out of a second cylinder via at least one outlet channel, where when the engine braking mode is activated, at least one camshaft for activating at least one gas exchange valve of the reciprocating internal combustion engine is adjusted.
Abstract: An arrangement for converting thermal energy from lost heat of an internal combustion engine into mechanical energy includes a working circuit for a working medium. An expansion engine is disposed in the working circuit. A heat exchanger is mounted upstream of the expansion engine in a flow direction of the working medium where the working circuit extends through the heat exchange. The heat exchanger includes an exhaust gas recirculation heat exchanger having a cold part and a warm part, an exhaust gas heat exchanger, and a phase transition cooling in the internal combustion engine. The heat exchanger is formed by serial connection in a sequence of the cold part of the exhaust gas recirculation heat exchanger, the exhaust gas heat exchanger, the phase transition cooling in the internal combustion engine, and the warm part of the exhaust gas recirculation heat exchanger.
Type:
Grant
Filed:
December 17, 2018
Date of Patent:
June 28, 2022
Assignee:
Daimler AG
Inventors:
Eugen Krebs, Nicolas Stanzel, Thomas Streule
Abstract: An energy storage unit for a motor vehicle has a support frame which can be non-destructively detachably mounted on a body of the motor vehicle and a plurality of storage modules for storing electrical energy which can be mounted on the support frame. The storage modules are configured as intrinsically sealed units which can be arranged on the support frame from bottom to top in the vertical direction of the vehicle and can be inserted into respective corresponding receiving openings in the support frame.
Type:
Grant
Filed:
November 9, 2018
Date of Patent:
June 28, 2022
Assignee:
Daimler AG
Inventors:
Nihat Sasmaz, Matthias Nohr, Franz Maier, Shunsuke Amagai
Abstract: A feed and ignition device for a gas engine has an injector for the direct blowing-in of a combustion gas into a combustion chamber of the gas engine. The device also has a pre-combustion chamber into which a fuel can be introduced and a plurality of overflow openings distributed in the peripheral direction of the injector over the periphery of the feed and ignition device via which the pre-combustion chamber can be directly connected fluidically to the combustion chamber. A spark ignition device ignites a fuel-air mixture including at least the fuel introduced into the pre-combustion chamber. The pre-combustion chamber, the overflow openings, and the spark ignition device are formed by a first structural unit and the injector is formed by a second structural unit formed separately from the first structural unit.
Abstract: A valve train of an internal combustion engine of a motor vehicle includes a rocker arm assigned to a first combustion chamber of the internal combustion engine where via the rocker arm a gas exchange valve assigned to the first combustion chamber is actuatable. An actuating device is assigned to a second combustion chamber of the internal combustion engine where via the actuating device, by supplying the actuating device with a hydraulic fluid, the second combustion chamber is switchable between a firing mode for fired operation and a braking mode for an engine braking operation of the internal combustion engine. A supply of the hydraulic fluid to the actuating device assigned to the second combustion chamber is adjustable by the rocker arm assigned to the first combustion chamber.
Abstract: In a method for operating an internal combustion engine of a motor vehicle, exhaust gas from the internal combustion engine is fed to a particulate filter of the motor vehicle. Until a predetermined filtration rate of the particulate filter is reached, a temporary interruption of a fuel supply to the internal combustion engine is prevented in an overrun mode of the motor vehicle if a temperature of the exhaust gas in the particulate filter is greater than a predetermined threshold value of the temperature. An arrangement of the particulate filter in an exhaust system of the motor vehicle is also described.
Abstract: A vehicle driving apparatus is capable of reducing vehicle weight and manufacturing cost while improving performance of heat dissipation from a speed reduction mechanism. The vehicle driving apparatus includes a motor, which is incorporated in a vehicle, a speed reduction mechanism, which transmits driving force produced by the motor to a differential gear of the vehicle, and a housing structure, which accommodates the speed reduction mechanism and the differential gear. The housing structure includes a rear cover, adjacent to the speed reduction mechanism, and a rib structure, provided on the rear cover, and the rib structure is provided along the direction in which the vehicle travels and integrated with the rear cover.
Abstract: An electrical axle drive device includes at least one first electrical machine, which has a stator and a rotor rotatable around a machine axis of rotation relative to the stator. A gear unit is drivable by the first electrical machine having at least one first planetary gear stage drivable by the first electrical machine and at least one first spur gear stage drivable by the first electrical machine. The device also includes at least one drive wheel of the motor vehicle being able to be rotated around a wheel axis of rotation running parallel to the machine axis of rotation and being drivable by the first electrical machine via the gear unit.
Type:
Grant
Filed:
June 25, 2018
Date of Patent:
May 17, 2022
Assignee:
DAIMLER AG
Inventors:
Christian Krajewski, Guenter Niebauer, Florian Vincon
Abstract: A hybrid drive system for a motor vehicle includes an input shaft, which introduces torques from an internal combustion engine into the hybrid drive system and which is mounted rotatably around an axis of rotation. An output shaft is arranged coaxially to the input shaft. The system also includes an electric machine having a stator and a rotor, and a hub non-rotatably connected to the rotor. The system further includes a wet clutch which has a first actuating piston. The hub is formed as a one-piece forged part and has a first running surface for the first actuating piston. The wet clutch is provided to non-rotatably connect the hub to the output shaft.
Type:
Application
Filed:
January 24, 2020
Publication date:
May 12, 2022
Applicant:
DAIMLER AG
Inventors:
Thomas LECHTHALER, Jan VELTHAUS, Lukas RUBE, Bernhard ZIEGLER, Bernd KOPPITZ, Kai HEUKELBACH