Multibody Dynamics Modeling and Experimental Validation of Fuel-Injection Pump

Year: 2011
Editor: Chakrabarti, A.
Author: P.Sundarraman; R.Baskaran; V.Sunilkumar; K.Raghavendra; Saha, K.Subir; Vasa, J. Nilesh
Section: Applications in Practice
Page(s): 397-404


Fuel-Injection Pump (FIP) is used in diesel engines to generate pressure for fuel injection using a cam mechanism. With the advent of Fuel-Injection Equipment for high pressures, the design of FIP becomes critical not only with respect to the hydraulic system but also with respect to the multibody system. This paper proposes a methodology to model the multibody dynamic aspects of the FIP by applying a recursive MBD algorithm namely Decoupled Natural Orthogonal Complement (DeNOC) matrices. Such a model will be highly helpful in designing FIPs for high pressure application like common rail injection systems. The results based on the modeling are found to be in good agreement with other multibody dynamics software packages. Further, experimental studies are performed to estimate the driving torque and results are found to be in a good agreement with the model. This approach can be extended to a complex system comprising many similar moving bodies.

Keywords: Diesel fuel-injection pump, Cam-follower, multibody dynamic modeling


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