Volkswagen Ag

Audi Ag

Jan-Christoph Albrecht

Carsten Wachsmuth

Jochen Westhäuser

Sven Twenhövel

Hendrik Schröder

Oliver Berger

Arne-Christian Voigt

Jan-Philipp Brinkmeier

Bastian Schaar

Jochen Westhaeuser

Alexander Wess

Frank Jürgen Engler

Frank Juergen Engler

Nils Vrielink

Michael Dobmann

Cartsten Wachsmuth

A method for initiating a defrosting process of a heat exchanger of a heat pump of a motor vehicle, wherein a fan is assigned to the heat exchanger, wherein the power consumption and/or the speed of the fan is monitored, a defrosting process is initiated when the power consumption and/or the speed exceeds and/or falls below a threshold value, and the threshold value is determined as a function of a parameter, wherein the parameter is an indicator of a current relative air speed of the ambient air in relation to the motor vehicle.

Method for initiating a defrosting process of a heat exchanger of a heat pump of a motor vehicle

A method for initiating a defrosting process of a heat exchanger of a heat pump of a motor vehicle, wherein the heat exchanger and a coolant heat exchanger of a cooling circuit of the motor vehicle are arranged in a common air path, involves determining a coolant outlet temperature of a coolant from the coolant heat exchanger, determining a state of icing of the heat exchanger using the coolant outlet temperature, and initiating a defrosting process of the heat exchanger if icing of the heat exchanger is determined.

Method for initiating a defrosting process of a heat exhanger of a heat pump of a motor vehicle and a corresponding motor vehicle

A method for controlling the charging process of an electrical energy storage device, at an electric charging device, wherein the charging device has a temperature control system and the energy storage device has a temperature control system, including at least the following steps: transfer of electrical energy between the charging device and the energy storage device, transfer of thermal energy between a temperature control system of the charging device and the temperature control system of the energy storage device, and transmission of at least one first item of information from a computing unit associated with the charging device to a computing unit associated with the energy storage device, and/or transmission of at least one second item of information from a computing unit associated with the energy storage device to a computing unit associated with the charging device.

Method for controlling charging process of electrical energy storage device and matching transfer of electrical energy and thermal energy, and charging device

The invention relates to a method for operating a climate-control system () for a vehicle (). According to the invention, total energy efficiencies are determined for a group of operating strategies for the air-conditioning system () and an operating strategy with the greatest total efficiency that fulfills the heating output requirement () that has been determined, is selected.

Method for operating an air-conditioning system for a vehicle

In order to provide a method for de-icing a heat exchanger of a motor vehicle, which prevents large amounts of melt water from a defrosting process running onto the floor or the road beneath the motor vehicle, freeze again and pose a risk of injury to pedestrians, in a method for defrosting a heat exchanger of a motor vehicle, in which, for a heat exchanger arranged in a motor vehicle, a defrosting process for removing a layer of frozen water or frost formed on a surface of the heat exchanger is carried out, the defrosting process comprising heating the surface, and melt water being produced, it is proposed that the amount of melt water discharged onto a local region of a floor beneath the motor vehicle is limited to a maximum value.

Method of de-icing a heat exchanger of a motor vehicle and motor vehicle with a heat exchanger

A fuel cell system includes a combined cooling circuit for a motor vehicle that provides a method of cooling a fuel cell of a fuel cell system.

Combined cooling circuit for a fuel cell

The invention relates to a method for setting a driving speed of a motor vehicle on a route. A control device of the motor vehicle sets the driving speed depending on an operating position limited by two extreme positions of a pedal device of the motor vehicle, which may be operated by a driver, wherein the control device detects the operating position of the pedal device, and depending on the detected operating position, determines in at least one specified driving mode a target driving speed corresponding to the respective operating position, and the control device sets the driving speed corresponding to the respective target driving speed by means of a closed loop control as long as the respective operating position is detected. The setting in this case takes place independently of a current condition of the route. The invention also includes a motor vehicle.

Method for setting a driving speed of a motor vehicle, and motor vehicle with a control device

In a method for cooling a traction battery of an electrically drivable vehicle, a refrigerant is used as cooling medium, and in a mass flow of specified magnitude is led along the traction battery through at least one channel. The at least one channel is in heat-conducting connection with the traction battery. It is proposed that an available cooling power (P) for cooling the traction battery is determined, wherein as a function of the available cooling power (P), the magnitude of the mass flow of the refrigerant is regulated in such a way that either no cooling power (P) is delivered to the traction battery, or the delivered cooling power (P) in each case assumes one of multiple cooling power stages (I, II) as a function of the available cooling power (P).

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Wolfsburg, Germany

Jan-Christoph Albrecht