Abstract: The present invention relates to a process for producing alcohols by hydrogenation of C9 aldehydes. The process according to the invention is performed in two consecutive hydrogenation stages, wherein the first hydrogenation stage employs an activated metal catalyst based on a nickel metal foam and the second stage employs a supported catalyst containing a catalytically active component from the group consisting of nickel, copper, chromium and mixtures thereof.

Abstract: The present disclosure relates to a system and a method for communicating with a motor vehicle. The method comprises providing a social media interface for the motor vehicle on a specified vehicle fleet server, wherein a communication is provided via a social media application through the social media interface, receiving a message from a mobile terminal through the social media interface, ascertaining a vehicle function call from the message by an interpretation program, wherein semantics of the message are interpreted by in order to ascertain the vehicle function call, carrying out the ascertained vehicle function call in the motor vehicle, and sending a response message from the vehicle fleet server to the mobile terminal if, as a response to the vehicle function call, the vehicle fleet server obtains a vehicle parameter from the motor vehicle, wherein the response message is generated depending on the obtained vehicle parameter.

Abstract: The present disclosure relates to a system and a method for communicating with a motor vehicle. The method comprises providing a social media interface for the motor vehicle on a specified vehicle fleet server, wherein a communication is provided via a social media application through the social media interface, receiving a message from a mobile terminal through the social media interface, ascertaining a vehicle function call from the message by an interpretation program, wherein semantics of the message are interpreted by in order to ascertain the vehicle function call, carrying out the ascertained vehicle function call in the motor vehicle, and sending a response message from the vehicle fleet server to the mobile terminal if, as a response to the vehicle function call, the vehicle fleet server obtains a vehicle parameter from the motor vehicle, wherein the response message is generated depending on the obtained vehicle parameter.

Abstract: The invention relates to a server device and a to method for providing a vehicle function via a vehicle-external communication device, wherein the server device is used to detect user interactions with a motor vehicle, wherein a user behavior profile is learned by a learning function of the server device by means of the detected user interactions, and one or more vehicle functions from a predetermined function pool of the motor vehicle are determined via the learning function by means of the user behavior profile, wherein, if an event criterion is present for one of the determined vehicle functions, a communication function of the server device is offered for performing the corresponding vehicle function via the vehicle-external communication device.

Abstract: A method for operating a motor vehicle having a four-wheel drive and a drive unit, which can be switched on and off during travel, wherein the motor vehicle is driven by a torque provided by the drive unit, and the initially disengaged four-wheel drive is switched on, including: determining at least one limit torque which, while the four-wheel drive is switched off, can be transmitted from at least one wheel of the motor vehicle driven by the drive unit to the ground surface upon which the motor vehicle is travelling, while the slip between the at least one wheel and the ground surface falls below a specifiable threshold value.

Abstract: A method for operating a motor vehicle having a four-wheel drive and a drive unit, which can be switched on and off during travel, wherein the motor vehicle is driven by a torque provided by the drive unit, and the initially disengaged four-wheel drive is switched on, including: determining at least one limit torque which, while the four-wheel drive is switched off, can be transmitted from at least one wheel of the motor vehicle driven by the drive unit to the ground surface upon which the motor vehicle is travelling, while the slip between the at least one wheel and the ground surface falls below a specifiable threshold value.

Abstract: A fuel injection valve for internal combustion engines with a valve member which is displaced in a bore in a valve body by the fuel pressure, counter to the action of a closing spring. The valve body has at a combustion-space end, a valve head which on a side which faces the valve body is arranged a sealing surface which interacts with a valve seat provided on the combustion-space end of the valve body, forming a sealing cross section, and including injection apertures which permit a flow of fuel from a pressure space in the valve body to the combustion space of the internal combustion engines and has an aperture cross section which can be varied as a function of the stroke of the valve member.

Abstract: A metering valve for metering a fluid for a fuel injection valve for internal combustion engines, with a hydraulic displacement amplifier for converting the actuating displacement of a piezoelectric actuator into an increased stroke of the valve needle. Integrating the displacement amplifier spatially into the valve housing in an "O valve" to give a small overall volume is served by providing the lifting piston of the displacement amplifier with an end section of reduced diameter which projects into a recess in the operation piston of the displacement amplifier. A Belleville spring lying in the amplifier chamber bounded by the pistons presses the operating piston against the actuator, and a helical compression spring arranged in the recess concentrically to the end section presses the lifting piston against the valve needle.