Patents by Inventor Stefan SUNDEMO

Stefan SUNDEMO 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).

  • Arrangement and a control method of an engine cooling system
    Patent number: 9797295
    Abstract: An engine cooling system in a vehicle comprises a first coolant circuit and a second coolant circuit connecting an engine to a radiator. A thermostat is arranged in the first coolant circuit and is arranged to be closed during engine warm-up, to prevent flow through the first coolant circuit. The cooling system further comprises a bypass circuit connecting the thermostat to the second coolant circuit and at least one parallel circuit. Each parallel circuit is connected to the second coolant circuit upstream of the bypass circuit, wherein a partial coolant flow is directed from the bypass circuit and upstream through the second coolant circuit into the at least one parallel circuit during engine warm-up. The disclosure further relates to a method for controlling such an engine cooling system.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: October 24, 2017
    Assignee: VOLVO CAR CORPORATION
    Inventors: Goran Almkvist, Jonas Bjorkholtz, Stefan Sundemo
  • ARRANGEMENT AND A CONTROL METHOD OF AN ENGINE COOLING SYSTEM
    Publication number: 20160084146
    Abstract: An engine cooling system in a vehicle comprises a first coolant circuit and a second coolant circuit connecting an engine to a radiator. A thermostat is arranged in the first coolant circuit and is arranged to be closed during engine warm-up, to prevent flow through the first coolant circuit. The cooling system further comprises a bypass circuit connecting the thermostat to the second coolant circuit and at least one parallel circuit. Each parallel circuit is connected to the second coolant circuit upstream of the bypass circuit, wherein a partial coolant flow is directed from the bypass circuit and upstream through the second coolant circuit into the at least one parallel circuit during engine warm-up. The disclosure further relates to a method for controlling such an engine cooling system.
    Type: Application
    Filed: September 8, 2015
    Publication date: March 24, 2016
    Inventors: Goran ALMKVIST, Jonas BJORKHOLTZ, Stefan SUNDEMO