Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Low noise fuel injection pump










Image Number 6 for United States Patent #7610902.

A fuel pump assembly has a bushing defining a pumping chamber, a plunger, a cam follower piece, and a compliance device for absorbing noise by increasing either or both of a hydraulic and/or a mechanical compliance of the fuel pump assembly. The compliance device may includes a spring washer or a press-fit spring. The pump bushing and/or plunger may include a cavity as the compliance device for increasing dead volume, the cavity being in fluid communication with the pumping chamber via an orifice. A deflectable or movable mechanism is positioned within a cavity for increasing dead volume, and a solenoid varies a diameter of the orifice. The moveable mechanism includes a poppet valve having a switching pressure related to engine speed. A vehicle includes an engine, transmission, fuel rail, and a fuel pump assembly configured with at least one compliance device for absorbing a hydraulic noise component.








 
 
  Recently Added Patents
Trailer rub rail portable ladder
Methods for accelerating the healing of connective tissue injuries and disorders
Multi-input IIR filter with error feedback
Ipad and keypad cover structure
Storage device carriers for adapting a storage device of a first size to a slot for a storage device of a second size
Methods and apparatus for improving the typical running time of the bellman-ford algorithm
Method and system for fabricating ion-selective field-effect transistor (ISFET)
  Randomly Featured Patents
Stabilizing device for ships
Mechanism for joining a carrier tape cover to a base stip
Method for forming capacitor of semiconductor device
Earth boring bit packed lubrication system
Magnetic detection system for items on the lower tray of a shopping cart
Microparticle enhanced light scattering agglutination assay
Printer having plural type wheel assembly
Injection moulding tool, method of injection moulding and a packaging container provided with an injection-moulded opening arrangement
Optical disc player
Selenium removal process