Abstract: A coolant supply system for a drive device of an electrically operated vehicle axle with an electric machine which has a cylindrical stator housing, in which there is a winding head space axially on both sides of a rotor/stator arrangement, at the bottom of which coolant collects. The two winding head spaces are fluidly connected to one another via a coolant sump, and the stator housing height and the coolant sump height in the electric machine vertical direction add up to a total height. In order to reduce the total height, the coolant sump is offset by a transverse offset from a rotor axis vertical plane. In this way, the stator housing height and the coolant sump height can at least partially overlap in the vertical direction of the electric machine by an overlap amount.

Abstract: A coolant supply system for an electric vehicle axle drive having an electric machine, in the electric machine housing of which a stator interacts with a rotor. The electric machine outputs to at least one vehicle wheel of the vehicle axle via a transmission arrangement. A coolant separator is arranged in the electric machine housing, which divides the interior of the electric machine housing into a radially outer stator chamber, in which the stator with its stator windings is arranged, and into a radially inner rotor chamber, which is separated therefrom in a largely fluid-tight manner and in which the rotor is arranged.

Abstract: A coolant supply system for a drive device of an electrically operated vehicle axle of a two-track vehicle with an electric machine. The coolant supply system has an electric machine hydraulic circuit in which a coolant tank, the interior of a cylindrical stator housing and a stator housing sump are integrated, in which the coolant draining from the stator housing collects, which can be returned from there to the coolant tank by at least one return pump. The stator housing sump has a suction point on each of its axially opposite axial sides, from which the coolant can be sucked off by the return pump.

Abstract: A gear motor for a motor vehicle is provided comprising a housing having an engine housing section to contain an electric machine and a transmission housing section to contain a transmission coupled to the electric machine, wherein the electric machine, the transmission, and an oil collection tank are incorporated in an oil circuit, wherein oil for the cooling and/or lubricating of the electric machine and the transmission circulates in the oil circuit by at least one delivery device of the gear motor or the motor vehicle, and wherein the interior of the engine housing section and the interior of the transmission housing section are separated from each other such that the oil collects separately in the engine housing section and the transmission housing section at respectively at least one suction outlet connected to the delivery device, while a lower section of the transmission housing section in which the oil collects forms the oil collection tank.

Abstract: A lubricant supply system, for a drive apparatus of an electrically operated vehicle having at least one electric machine which outputs power to at least one vehicle wheel via a gear mechanism arrangement, includes an electric machine hydraulic circuit in which a lubricant tank is connected via a suction line to a pressure pump which conveys lubricant to the electric machine via an electric machine supply line, and includes a gear mechanism hydraulic circuit, via which lubricant can be conveyed to the gear mechanism arrangement. The pressure pump is associated as a common pressure pump with both the electric machine hydraulic circuit and the gear mechanism hydraulic circuit so that lubricant during pump operation can be recirculated both in the electric machine hydraulic circuit and in the gear mechanism hydraulic circuit.

Abstract: A motor unit is provided having an electric motor, which is arranged in a housing, wherein the motor unit comprises a lubricant circuit, which cools and lubricates the electric motor, wherein the electric motor comprises a stator and a rotor, which is mounted rotatably in the stator, being connected fixed to the housing, while between the stator and the rotor there is a rotor gap. The motor unit further comprises a lubricant pump, which is fluidically connected to the stator housing, and a flow generating unit, which draws in air from the housing and blows the air into the rotor gap in order to remove lubricant from the rotor gap and reduce the internal friction in the electric motor. A method is also provided for reducing the internal friction in a motor unit.

Abstract: A motor unit is provided having an electric motor and a transmission, which are mechanically joined together and arranged in a housing, wherein the motor unit comprises a lubricant circuit, which lubricates the electric motor and the transmission, wherein a lubricant pump is provided, having an outlet and at least two inlets for lubricant. Furthermore, a lubricant sump is provided, which is arranged beneath the electric motor and/or the transmission in the housing during use, having at least two suction points. A method is also provided for the circulation of lubricant in a motor unit.

Abstract: A motor for a motor vehicle is provided comprising an engine housing to contain an electric machine, wherein the electric machine and an oil collection tank of the motor or the motor vehicle are incorporated in an oil circuit or can be so incorporated, wherein oil for the cooling and/or lubricating of the electric machine circulates in the oil circuit by at least one delivery device, wherein the delivery device comprises a pump having at least two suction inlets or is such a pump, at least one such inlet being connected to at least one suction outlet of the engine housing and at least one other inlet is connected to at least one suction outlet of the oil collection tank, and the oil can be delivered by a common outlet of the pump at the pressure side to the oil collection tank and to the electric machine.

Abstract: A gear motor for a motor vehicle is provided comprising a housing having an engine housing section to contain an electric machine and a transmission housing section to contain a transmission coupled to the electric machine, wherein the electric machine, the transmission, and an oil collection tank are incorporated in an oil circuit, wherein oil for the cooling and/or lubricating of the electric machine and the transmission circulates in the oil circuit by at least one delivery device of the gear motor or the motor vehicle, and wherein the interior of the engine housing section and the interior of the transmission housing section are separated from each other such that the oil collects separately in the engine housing section and the transmission housing section at respectively at least one suction outlet connected to the delivery device, while a lower section of the transmission housing section in which the oil collects forms the oil collection tank.

Abstract: A drive device for a motor vehicle having a drive assembly that is operatively connected or can be operatively connected to an input shaft of a gearbox. A gear set of the gearbox can be supplied with lubricant by a primary lubricant pump. The primary lubricant pump is coupled to an output shaft of the gearbox.

Abstract: A drive device for a motor vehicle having a drive assembly that is operatively connected or can be operatively connected to an input shaft of a gearbox. A gear set of the gearbox can be supplied with lubricant by a primary lubricant pump. The primary lubricant pump is coupled to an output shaft of the gearbox.

Abstract: A drive chain suitable for use in a continuously variable transmission of a motor vehicle, the transmission having two pairs of spaced drive members about which the chain passes to transfer torque from one drive member to the other. The chain includes a plurality of link elements that include spaced, side-by-side plate links. The plate links include openings in which pairs of parallel rocker members are disposed for relative rocking movement of at least one rocker member about its longitudinal axis. The rocker members extend outwardly beyond the plate links and are retained in position by retaining members that engage particular rocker members. A method for stretching the chain is also disclosed in which areas of some of the plate links are plastically deformed before the chain is put to use.

Abstract: A drive chain suitable for use in a continuously variable transmission of a motor vehicle, the transmission having two pairs of spaced drive members about which the chain passes to transfer torque from one drive member to the other. The chain includes a plurality of link elements that include spaced, side-by-side plate links. The plate links include openings in which pairs of parallel rocker members are disposed for relative rocking movement of at least one rocker member about its longitudinal axis. The rocker members extend outwardly beyond the plate links and are retained in position by retaining members that engage particular rocker members. A method for stretching the chain is also disclosed in which areas of some of the plate links are plastically deformed before the chain is put to use.

Abstract: A drive chain suitable for use in a continuously variable transmission of a motor vehicle, the transmission having two pairs of spaced drive members about which the chain passes to transfer torque from one drive member to the other. The chain includes a plurality of link elements that include spaced, side-by-side plate links. The plate links include openings in which pairs of parallel rocker members are disposed for relative rocking movement of at least one rocker member about its longitudinal axis. The rocker members extend outwardly beyond the plate links and are retained in position by retaining members that engage particular rocker members. A method for stretching the chain is also disclosed in which areas of some of the plate links are plastically deformed before the chain is put to use.

Abstract: An endless link chain, particularly for use in a continuously variable transmission in the power train of a motor vehicle, has composite links and pintles which articulately connect neighboring links to each other. At least one of the links is assembled of at least two types of parallel plate-like components which differ from each other in size, shape, material and/or strength. The purpose of such selection of the plate-like components is to enhance one or more characteristics of the chain, for example, to reduce or eliminate vibration, to reduce the bulk and/or to properly position the pintles. The distribution of components in one or more links can be selected with a view to influence the above-enumerated and/or other characteristics, such as the resistance to deformation, of the chain.

Abstract: An endless flexible torque-transmitting device such as a chain belt in a continuously variable transmission of a motor vehicle has an improved arrangement of the chain links that provides a better distribution of the load between the individual links and thereby increases the torque- and power-transmitting capacity of the endless flexible torque-transmitting device.