Patents by Inventor Ngoc-Tam Vu

Ngoc-Tam Vu 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).

  • Patent number: 7182069
    Abstract: A high-pressure fuel accumulator (1), in particular for a common rail injection system, has a housing (2) in which a pressure chamber (3) is inserted, and at least one inlet and at least one outlet. The pressure chamber is implemented as a through bore, wherein the through bore is securely sealed with a tie rod nut connection (6) (7). In a high-pressure fuel accumulator the pressure chamber can be implemented as a blind bore, wherein the blind bore being securely sealed with a tie rod (6).
    Type: Grant
    Filed: July 13, 2005
    Date of Patent: February 27, 2007
    Assignee: Siemens Aktiengesellschaft
    Inventors: Uwe Nigrin, Mohsen Pirouz, Stefan Portner, Johann Schneider, Ngoc-Tam Vu
  • Patent number: 7118350
    Abstract: The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on the above section and drives at least one spring-loaded piston which may be displaced in a direction radial to the drive axis. The driveshaft is embodied to comprise an end region which as a floating mounting and is also the drive for a fuel supply pump.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: October 10, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Ludmilla Graf, Uwe Nigrin, Johann Schneider, Ngoc-Tam Vu
  • Patent number: 7040289
    Abstract: A high-pressure fuel accumulator (1), in particular for a common rail injection system, has a housing (2) in which a pressure chamber (3) is inserted, and at least one inlet and at least one outlet. The pressure chamber is implemented as a through bore, wherein the through bore is securely sealed with a tie rod nut connection (6) (7). In a high-pressure fuel accumulator the pressure chamber can be implemented as a blind bore, wherein the blind bore being securely sealed with a tie rod (6).
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: May 9, 2006
    Assignee: Siemens Aktiengesellschaft
    Inventors: Uwe Nigrin, Mohsen Pirouz, Stefan Portner, Johann Schneider, Ngoc-Tam Vu
  • Publication number: 20050287016
    Abstract: A radial piston pump for generation of high fuel pressures in fuel injection systems comprises a pump housing, a pump shaft and at least one cylinder insert, arranged radially to the pump shaft. A cylinder chamber is located within the cylinder insert in which a piston can move back and forth. The cylinder insert is connected with a front face to a flattening of the pump housing, by connecting means. The cylinder insert comprises an inlet port and a high pressure port. The front face of the cylinder insert and/or the flattening of the pump housing comprise precisely machined raised sealing regions for sealing the cylinder insert against the pump housing, which are relatively small in relation to the total front face of the cylinder insert and the total flattening of the pump housing. A high surface pressure is thus achieved in the sealing region.
    Type: Application
    Filed: September 7, 2005
    Publication date: December 29, 2005
    Inventors: Werner Knauth, Uwe Nigrin, Ngoc-Tam Vu
  • Publication number: 20050247291
    Abstract: A high-pressure fuel accumulator (1), in particular for a common rail injection system, has a housing (2) in which a pressure chamber (3) is inserted, and at least one inlet and at least one outlet. The pressure chamber is implemented as a through bore, wherein the through bore is securely sealed with a tie rod nut connection (6) (7). In a high-pressure fuel accumulator the pressure chamber can be implemented as a blind bore, wherein the blind bore being securely sealed with a tie rod (6).
    Type: Application
    Filed: July 13, 2005
    Publication date: November 10, 2005
    Inventors: Uwe Nigrin, Mohsen Pirouz, Stefan Portner, Johann Schneider, Ngoc-Tam Vu
  • Publication number: 20050100448
    Abstract: The invention relates to a radial piston pump unit for a high pressure injection system with a pump housing in which a driveshaft with an eccentric section is mounted. A reciprocating ring sits on the above section and drives at least one spring-loaded piston which may be displaced in a direction radial to the drive axis. The driveshaft is embodied to comprise an end region which as a floating mounting and is also the drive for a fuel supply pump.
    Type: Application
    Filed: December 17, 2004
    Publication date: May 12, 2005
    Inventors: Ludmilla Graf, Uwe Nigrin, Johann Schneider, Ngoc-Tam Vu
  • Publication number: 20050011495
    Abstract: A high-pressure fuel accumulator (1), in particular for a common rail injection system, has a housing (2) in which a pressure chamber (3) is inserted, and at least one inlet and at least one outlet. The pressure chamber is implemented as a through bore, wherein the through bore is securely sealed with a tie rod nut connection (6) (7). In a high-pressure fuel accumulator the pressure chamber can be implemented as a blind bore, wherein the blind bore being securely sealed with a tie rod (6).
    Type: Application
    Filed: July 29, 2004
    Publication date: January 20, 2005
    Inventors: Uwe Nigrin, Mohsen Pirouz, Stefan Portner, Johann Schneider, Ngoc-Tam Vu