《Pump and Valve Design using AMESim》.pdf

Pump and Valve Design using Titre AMESim Technical Note n°203 How to contact IMAGINE: North America imagine-us@ Europe imagine@ Asia imagine-japan@ Visit for further contact information and details on other countries. Copyright ª IMAGINE S.A. 1995-2002 AMESim® and AMESet® are the registered trademark of IMAGINE SA. All other product names are trademarks or registered trademarks of their respective companies th Latest update: July 16 , 2001 – - Copyright ª IMAGINE S.A. 1995-2002 Pump and Valve Design using AMESim 3/ 11 Pump and Valve Design using AMESim Hydraulic component design is one of the strongest points of our company; Imagine started as a consulting firm for fluid power systems. The first libraries develo ped in AMESim were also for hydraulics and still today it is a field for which we have no competitor with a similar expertise. As injection is probably the most representative application, let’s examine a 3 piston pump used in common rail injection and a PWM valve. 1. 3 Piston Pump – - Copyright ª IMAGINE S.A. 1995-2002 Pump and Valve Design using AMESim 4/ 11 The piston displacement is piloted by a sinus source reproducing the rotating plate’s motion and the chamber is connected to the input and output through 2 check valves: Angular velocity Ë Integration Ë angle Ë piston travel Cycle: vacuum Ë check valve # 1 opens Ë Flow to the chamber Ë compression Ë check valve#2 opens Ë Flow to the pump outlet Piston travel: 6 mm