Patents by Inventor Udo Hoefer

Udo Hoefer has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Air-conditioning circuit for a hybrid motor vehicle, and method for preheating a motor vehicle battery of a hybrid motor vehicle
    Patent number: 11142036
    Abstract: An air-conditioning circuit for a hybrid vehicle has a charge-air cooler (12) for cooling charge air for a turbocharger of a combustion engine with a cooling medium, a low-temperature cooler (14) for cooling the cooling medium of the charge-air cooler (12), and an air-conditioning condenser (18) for dehumidifying conditioning air for air-conditioning a vehicle interior with the aid of a cooling liquid. The air-conditioning condenser (18) is connectable to the low-temperature cooler (14) for cooling the cooling liquid of the air-conditioning condenser. A temperature-control line (22) controls a temperature of a motor vehicle battery (24). The air-conditioning condenser (18) is connectable to the temperature-control line (22) for heating the motor vehicle battery (24). The required cooling power of the low-temperature cooler (14) can be reduced by cooling both the cooling medium of the charge-air cooler (12) and the cooling liquid of the air-conditioning condenser (18) in the low-temperature cooler (14).
    Type: Grant
    Filed: November 3, 2015
    Date of Patent: October 12, 2021
    Inventors: Tobias Rapp, Thomas Tscheppe, Udo Hoefer
  • AIR-CONDITIONING CIRCUIT FOR A HYBRID MOTOR VEHICLE, AND METHOD FOR PREHEATING A MOTOR VEHICLE BATTERY OF A HYBRID MOTOR VEHICLE
    Publication number: 20160129754
    Abstract: An air-conditioning circuit for a hybrid vehicle has a charge-air cooler (12) for cooling charge air for a turbocharger of a combustion engine with a cooling medium, a low-temperature cooler (14) for cooling the cooling medium of the charge-air cooler (12), and an air-conditioning condenser (18) for dehumidifying conditioning air for air-conditioning a vehicle interior with the aid of a cooling liquid. The air-conditioning condenser (18) is connectable to the low-temperature cooler (14) for cooling the cooling liquid of the air-conditioning condenser. A temperature-control line (22) controls a temperature of a motor vehicle battery (24). The air-conditioning condenser (18) is connectable to the temperature-control line (22) for heating the motor vehicle battery (24). The required cooling power of the low-temperature cooler (14) can be reduced by cooling both the cooling medium of the charge-air cooler (12) and the cooling liquid of the air-conditioning condenser (18) in the low-temperature cooler (14).
    Type: Application
    Filed: November 3, 2015
    Publication date: May 12, 2016
    Inventors: Tobias Rapp, Thomas Tscheppe, Udo Hoefer