Radial piston pump for generating high fuel pressure

US6457957B1 · kind B1 · utility

Inventors

• Ruediger Bauer · Fürstenau, DE
• Gerd Loesch · Stuttgart, DE

Key dates

• Filing date: May 11, 2001
• Grant date: Oct 1, 2002
• Expiry date: May 11, 2021

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F02M2200/505
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

Disclosed is a radial piston pump having a longitudinally movable pump piston in a cylinder chamber which communicates with a suction valve. A closing body of the suction valve is loaded by a valve closing spring in the direction of its valve seat affixed to the housing. The valve closing spring is supported on the pump piston. The radial piston pump is especially useful in fuel injection systems of internal combustion engines, particularly in common rail injection systems.