Abstract: The present invention relates to a perfusion loop assembly for an ex vivo liver perfusion including: a pump for providing a fluid flow of a perfusion fluid through a first branch line and a second branch line; the first branch line being configured to provide a first portion of the perfusion fluid to the hepatic artery of the liver; the first branch line being coupled with a first gas exchanger, the second branch line being configured to provide a second portion of the perfusion fluid to the portal vein of the liver; the second branch line further including a first valve for controlling the flow of the perfusion fluid into the portal vein of the liver, a liver chamber assembly configured to hold the liver ex vivo, a liver outlet line attached to the vena cava of the ex vivo liver, at least one reservoir connected to the liver outlet and upstream from the pump.

Abstract: An emergency operation method for actuating a fuel pump after a first temperature threshold for an actuation electronics system of the fuel pump has been exceeded including reducing a power consumption of an electric motor that drives a pump stage by the actuation electronics system by reducing a rotational speed until a monitored temperature value falls below a second temperature threshold below the first temperature threshold. Emergency operation method is initiated after the first temperature threshold is exceeded by a fault signal output by the actuation electronics system to an engine control unit is communicatively connected to the actuation electronics system. The fault signal, as long as it is output, is used to suppress a specification for the rotational speed of the electric motor on the part of the engine control unit and instead to specify the rotational speed by way of the actuation electronics system.

Abstract: A method for operating a speed-controlled fluid pump includes: providing an electrical control current for the fluid pump; providing a maximum value for the electrical control current, which maximum value corresponds to a maximum permissible pressure at an outlet side of the fluid pump; providing a threshold value for the control current, the threshold value corresponding to a further maximum permissible pressure at the outlet side of the fluid pump and is predefined in dependence upon at least one boundary condition, the threshold value being less than the maximum value for the electrical control current; and controlling the fluid pump with not more than the threshold value for the control current, if it has been determined that the at least one boundary condition holds, so as to limit the pressure at the outlet side of the fluid pump to a value provided for the at least one boundary condition.

Abstract: A perfusion loop assembly for ex vivo liver perfusion includes a pump providing perfusion fluid through a line branching at a branching point into a first branch line and a second branch line. The first branch line provides a first portion of the perfusion fluid to the hepatic artery of the liver, the first branch line coupled with a gas exchanger, where the first branch line includes a flow rate sensor and/or a pressure sensor. The second branch line provides a second portion of the perfusion fluid to the portal vein of the liver; the second branch line includes a valve for controlling flow of perfusion fluid into the portal vein. The second branch line includes a flow rate sensor and/or a pressure sensor. A liver chamber assembly holds the liver ex vivo, and an outlet line for the perfusion fluid connects the liver chamber assembly and the pump.

Abstract: The present invention relates to a perfusion loop assembly for an ex vivo liver perfusion including: a pump for providing a fluid flow of a perfusion fluid through a first branch line and a second branch line; the first branch line being configured to provide a first portion of the perfusion fluid to the hepatic artery of the liver; the first branch line being coupled with a first gas exchanger, the second branch line being configured to provide a second portion of the perfusion fluid to the portal vein of the liver; the second branch line further including a first valve for controlling the flow of the perfusion fluid into the portal vein of the liver, a liver chamber assembly configured to hold the liver ex vivo, a liver outlet line attached to the vena cava of the ex vivo liver, at least one reservoir connected to the liver outlet and upstream from the pump.

Abstract: An apparatus for controlling a fluid pump for a motor vehicle includes: a first controller configured to actuate an electric prime mover of the fluid pump by impressing at least one motor current with an adapted current intensity and an adapted waveform; and a second controller configured to detect a rotational speed of the electric prime mover and to apply an adapted voltage to the electric prime mover on the basis of the detected rotational speed.

Abstract: An emergency operation method for actuating a fuel pump after a first temperature threshold for an actuation electronics system of the fuel pump has been exceeded including reducing a power consumption of an electric motor that drives a pump stage by the actuation electronics system by reducing a rotational speed until a monitored temperature value falls below a second temperature threshold below the first temperature threshold. Emergency operation method is initiated after the first temperature threshold is exceeded by a fault signal output by the actuation electronics system to an engine control unit is communicatively connected to the actuation electronics system. The fault signal, as long as it is output, is used to suppress a specification for the rotational speed of the electric motor on the part of the engine control unit and instead to specify the rotational speed by way of the actuation electronics system.

Abstract: A method for operating a fuel feed pump, the fuel feed pump having a pump system and an electrically commutated electric motor, the pump system being drivable by the electric motor, includes: detecting fluctuation in circular motion of the pump system over a rotational speed of the pump system to obtain a value of the fluctuation; standardizing the detected value of the fluctuation to obtain a standardized valise; and in a case in which a predefinable limit is exceeded by the standardized value, limiting a gradient of change in the rotational speed of the pump system.

Abstract: A delivery device for delivering a medium in a vehicle and for limiting a system pressure of the delivery device includes a vehicle pump, which is driven by an electric motor. The electric motor is controlled by a controller, the controller being configured to detect an actual rotational speed of the electric motor and an actual operating current of the electric motor. If the actual operating current of the electric motor exceeds a predefined operating current limit value, the controller is configured to generate a first signal relating to a system pressure being exceeded. The predefined operating current limit value is dependent on the actual rotational speed of the electric motor.

Abstract: A fuel pump of a motor vehicle includes: a pump stage configured to induce fuel from a fuel tank; an electric motor configured to drive the pump stage; and control electronics configured to supply the electric motor with electrical current. The control electronics includes a memory storing a low temperature start program and a standard start program. The control electronics are connected to a temperature sensor and a selector configured to select the start program depending on the sensed temperature.

Abstract: A delivery device for delivering a medium and for heating the medium to be delivered, having a vehicle pump, an electric motor for driving the vehicle pump and a control unit for controlling the electric motor. For heating the medium in the vehicle pump, the control unit is designed to generate a first alternating electrical current in a conductor winding of the electric motor. This first alternating electrical current induces eddy currents in a component of the delivery device, by which the medium can be heated.

Abstract: A method for controlling an electric motor of a vehicle pump used to deliver a medium. According to the method, a period required for at least one partial revolution of a rotor of the electric motor is determined. The fluctuations during the period can represent a measurement of the true running of the electric motor. The speed of the electric motor can be altered depending on the deviation of the period from a comparative value. As a result, the true running of the electric motor can be guaranteed once again.

Abstract: A method for operating a fuel feed pump, the fuel feed pump having a pump system and an electrically commutated electric motor, the pump system being drivable by the electric motor, includes: detecting fluctuation in circular motion of the pump system over a rotational speed of the pump system to obtain a value of the fluctuation; standardizing the detected value of the fluctuation to obtain a standardized valise; and in a case in which a predefinable limit is exceeded by the standardized value, limiting a gradient of change in the rotational speed of the pump system.

Abstract: A device for detecting an operating pressure of a fluid pump for a motor vehicle includes: a rotational speed detector configured to detect a rotational speed of the fluid pump; a pump current detector configured to detect at least one current of the fluid pump; a memory configured to store a pump current/rotational speed performance map with at least one pressure reference point; and a pressure determining device configured to determine a fluid pressure that prevails in the fluid pump based on the detected rotational speed, the detected current and the stored pump current/rotational speed performance map.

Abstract: The present invention relates to a reliable method of prediction of sepsis in humans after a trauma, wherein the level of pancreatic stone protein/regenerating protein (PSP/reg) is determined in serum, and a high level is indicative of the development of sepsis at early stages of the disease. Furthermore a method of determination of PSP/reg levels in serum is described.

Abstract: A delivery device for delivering a medium in a vehicle and for limiting a system pressure of the delivery device includes a vehicle pump, which is driven by an electric motor. The electric motor is controlled by a controller, the controller being configured to detect an actual rotational speed of the electric motor and an actual operating current of the electric motor. If the actual operating current of the electric motor exceeds a predefined operating current limit value, the controller is configured to generate a first signal relating to a system pressure being exceeded. The predefined operating current limit value is dependent on the actual rotational speed of the electric motor.

Abstract: A delivery device for delivering a medium and for heating the medium to be delivered, having a vehicle pump, an electric motor for driving the vehicle pump and a control unit for controlling the electric motor. For heating the medium in the vehicle pump, the control unit is designed to generate a first alternating electrical current in a conductor winding of the electric motor. This first alternating electrical current induces eddy currents in a component of the delivery device, by which the medium can be heated.

Abstract: An apparatus for controlling a fluid pump for a motor vehicle includes: a first controller configured to actuate an electric prime mover of the fluid pump by impressing at least one motor current with an adapted current intensity and an adapted waveform; and a second controller configured to detect a rotational speed of the electric prime mover and to apply an adapted voltage to the electric prime mover on the basis of the detected rotational speed.

Abstract: A method for operating a speed-controlled fluid pump includes: providing an electrical control current for the fluid pump; providing a maximum value for the electrical control current, which maximum value corresponds to a maximum permissible pressure at an outlet side of the fluid pump; providing a threshold value for the control current, the threshold value corresponding to a further maximum permissible pressure at the outlet side of the fluid pump and is predefined in dependence upon at least one boundary condition, the threshold value being less than the maximum value for the electrical control current; and controlling the fluid pump with not more than the threshold value for the control current, if it has been determined that the at least one boundary condition holds, so as to limit the pressure at the outlet side of the fluid pump to a value provided for the at least one boundary condition.

Abstract: The electric energy provided to some loads in a vehicle is limited or controlled by a power controller that receives a signal specifying how much power should be provided to the load. When the link providing the power-specifying signal is lost, the controller adjusts the power to the load according to an internal temperature of the controller instead of simply providing full power to the load.