Abstract: A folding bicycle has a main-frame with a bottom bracket, crank, pedals, and a seat post. A front is attached to the main-frame by a front hinge having an axis parallel to the crank axis, and has a mono-fork suspension. The front frame rotates about the front hinge to a folded position wherein the mono-fork is behind the front hinge axis. A rear swingarm suspension has a rear sprocket and is attached to the main-frame by a rear hinge that preferably is coincident with the crank axis. The swingarm is of a single-stay configuration and is rotatable about the rear hinge to a folded position wherein the rear sprocket is forward of the crank axis. The main-frame may consist of left and right sidewalls spaced apart from one another, and the mono-fork lies at least partially between the sidewalls when the front frame is in the folded position.

Abstract: An exhaust gas turbine is provided. The exhaust gas turbine includes a first turbine housing part having insulating material extending along an interior surface and a second turbine housing part having insulating material extending along an interior surface, the second turbine housing part coupled to the first turbine housing part to form a volute directing exhaust gas to a turbine wheel.

Abstract: A selector guide valve in cooling system of an internal combustion engine is provided. The selector guide valve includes a first control drum independently rotatable and including an inlet receiving engine coolant from a pump and a plurality of coolant openings extending through the first control drum and a second control drum independently rotatable, circumferentially surrounding the first control drum, and including a plurality of coolant openings extending through the second control drum.

Abstract: An internal combustion engine has a cylinder head with at least one cylinder and a cooled turbine. Each cylinder has at least one outlet opening adjoined by an exhaust line for discharging exhaust gases from the cylinder. The exhaust line issues into an inlet region transitioning into an exhaust gas-conducting flow duct of the turbine. The turbine has at least one rotor mounted on a rotatable shaft in a turbine housing. The turbine has at least one coolant duct which is integrated in the housing and which is delimited and formed by at least one wall of the housing to form a cooling arrangement. The at least one wall of the turbine housing that delimits the at least one coolant duct is provided, at least in regions, with a thermal insulation.

Abstract: The internal combustion engine is provided which may include a cylinder head, a turbine, and a turbine housing. The turbine housing may include an exhaust gas passage, at least one coolant fluid passage, and a wall between the passages. The wall may have a first area (Aexhaust) disposed to absorb heat from an exhaust flow passing through the exhaust gas passage, and a second area (Acoolant) disposed to transfer heat from the wall to be absorbed by a coolant fluid flow passing through the at least one coolant fluid passage, wherein the following applies: Acoolant/Aexhaust?1.2.

Abstract: A cylinder block for an engine includes a first composite portion having a first surface adjacent to a first recess, a second composite portion having a second surface adjacent to a second recess, and a cylinder liner received by the first and second recesses and positioned between the first and second portions. The first surface is adapted to mate with the second surface along a plane extending through the cylinder liner.

Abstract: Methods and systems are provided for an engine crankshaft including an un-balanced mass coupled to a planetary gear set driven by the engine crankshaft. In one example, a system may include an engine crankshaft as a sun gear for a planetary gear set, with a single un-balanced mass coupled to an outer ring of the planetary gear set. In another example, a method may include driving an engine crankshaft in a first direction and driving an un-balanced mass coupled to an outer ring of a planetary gear set in a second direction opposite to the first direction, with rotation of the outer ring being driven by the engine crankshaft.

Abstract: The disclosure relates to an injection valve for an internal combustion engine of a motor vehicle, having a cooling device for cooling the injection valve. The mentioned cooling device is a thermosiphon cooling device, wherein the thermosiphon cooling device comprises a reservoir volume, and wherein the cooling element has a thermally conductive connection to the reservoir volume.

Abstract: A reciprocating piston engine which has a cylinder block, at least one combustion chamber arranged in the cylinder block and a liner which borders the combustion chamber and is composed of a first material is provided. In one example, the reciprocating piston engine comprises a reinforcing element composed of a second material for the radial reinforcement of the liner, said reinforcing element being arranged between the cylinder block and the liner and at least partially surrounding the liner, with the second material having a higher modulus of elasticity than the first material.

Abstract: A folding bicycle has a main-frame with a bottom bracket, crank, pedals, and a seat post. A front is attached to the main-frame by a front hinge having an axis parallel to the crank axis, and has a mono-fork suspension. The front frame rotates about the front hinge to a folded position wherein the mono-fork is behind the front hinge axis. A rear swingarm suspension has a rear sprocket and is attached to the main-frame by a rear hinge that preferably is coincident with the crank axis. The swingarm is of a single-stay configuration and is rotatable about the rear hinge to a folded position wherein the rear sprocket is forward of the crank axis. The main-frame may consist of left and right sidewalls spaced apart from one another, and the mono-fork lies at least partially between the sidewalls when the front frame is in the folded position.

Abstract: A direct-injection engine having a cylinder in which a combustion chamber is jointly formed by a piston crown of a piston, which is movable along the longitudinal axis of the cylinder, and a cylinder head, and an injection nozzle, which is arranged in the cylinder head on the opposite side of the piston crown eccentrically, spaced apart from the longitudinal axis of the cylinder, for the direct injection of fuel, which injection nozzle has a nozzle needle movable in a nozzle body, wherein the needle in the open position of the nozzle is moved into the combustion chamber, opening up an annular gap arranged between the nozzle body and needle.

Abstract: An internal combustion engine includes a cylinder head, a cylinder block serving as an upper crankcase half for holding a crankshaft in at least two crankshaft bearings, at least one further shaft mounted in at least two shaft bearings, an oil circuit with oil-conducting lines for supplying oil to at least two bearings, and an exhaust-gas recirculation arrangement. A heat conductor runs between at least one of the bearings and a thermally more highly loaded region of the internal combustion engine which, at least in the warm-up phase of the internal combustion engine, is at a higher temperature than the associated bearing.

Abstract: The disclosure relates to a control valve for a medium circuit of an internal combustion engine, in particular to a thermostat of a coolant circuit of the internal combustion engine. The control valve includes a valve housing, an expansible material element arranged in a valve body, an energy accumulator having an abutment element, a valve seat, and at least one locking element arranged on the abutment element, each locking element having a counter-latching face. The control valve has a first position wherein the counter-latching face of each locking element is in a non-positive connection with a corresponding latching face of the valve housing in order to force the control valve into a mechanically blocked, forced-open position, the latching face being formed by means of an opening edge in the valve housing. This position may enable a quick and reliable initial filling or refilling of the coolant circuit.

Abstract: An internal combustion engine is provided. The internal combustion engine includes an oil circuit and a pump in fluidic communication with a supply line and at least one lubricant receiving component and a liquid cooling system including a coolant circuit having an oil pressure actuated coolant valve and a coolant valve control line in fluidic communication with the pump and having a first configuration in which coolant may flow therethrough and a second configuration in which coolant is inhibited from flowing therethrough, the first and second configurations triggered in response to a change in oil pressure in the coolant valve control line.

Abstract: The disclosure relates to an air-cooled electromechanical system having a rotor, a driver element, and a fan impeller, the rotor comprising a rotor shaft and field winding. Said disclosure proposes that the fan impeller is rotatably mounted on the rotor shaft and can be connected to and/or disconnected from the rotor and/or the rotor shaft by an automatic clutch.

Abstract: An internal combustion engine has a cylinder head with at least one cylinder and a cooled turbine. Each cylinder has at least one outlet opening adjoined by an exhaust line for discharging exhaust gases from the cylinder. The exhaust line issues into an inlet region transitioning into an exhaust gas-conducting flow duct of the turbine. The turbine has at least one rotor mounted on a rotatable shaft in a turbine housing. The turbine has at least one coolant duct which is integrated in the housing and which is delimited and formed by at least one wall of the housing to form a cooling arrangement. The at least one wall of the turbine housing that delimits the at least one coolant duct is provided, at least in regions, with a thermal insulation.

Abstract: A selector guide valve in cooling system of an internal combustion engine is provided. The selector guide valve includes a first control drum independently rotatable and including an inlet receiving engine coolant from a pump and a plurality of coolant openings extending through the first control drum and a second control drum independently rotatable, circumferentially surrounding the first control drum, and including a plurality of coolant openings extending through the second control drum.

Abstract: Embodiments for mass balancing an engine are provided. In one example, an internal combustion engine having at least one cylinder which is associated with a crank drive comprises at least one mechanically driven balancing unit for balancing the mass forces, the balancing unit including at least one balancing weight which serves as an unbalance by initially rotating a first mass about a rotational axis relative to a second mass when the balancing unit is operational, and an interrupter unit to disconnect the at least one balancing unit from the mechanical drive in a switched off state and connect it to the mechanical drive in a switched on state.

Abstract: Embodiments for balancing an engine are provided. In one example, a method for balancing mass forces of a crank drive of an internal combustion engine having at least one cylinder comprises providing at least one balancing unit which has at least one balancing weight which serves as an unbalance and which rotates about a rotational axis when the balancing unit is operational, the at least one balancing unit being embodied as a switchable balancing unit, and switching on the at least one balancing unit as a function of at least one operating parameter of the internal combustion engine.

Abstract: A direct-injection engine having a cylinder in which a combustion chamber is jointly formed by a piston crown of a piston, which is movable along the longitudinal axis of the cylinder, and a cylinder head, and an injection nozzle, which is arranged in the cylinder head on the opposite side of the piston crown eccentrically, spaced apart from the longitudinal axis of the cylinder, for the direct injection of fuel, which injection nozzle has a nozzle needle movable in a nozzle body, wherein the needle in the open position of the nozzle is moved into the combustion chamber, opening up an annular gap arranged between the nozzle body and needle.