Multibody Dynamics of IC ENGINE VALVE TRAIN ASSEMBLY using SOLIDWORKS
AIM
Analyse IC ENGINE VALVE TRAIN assembly using SOLIDWORKS Multibody dynamics.
OBJECTIVES
- Understand working of IC ENGINE VALVE TRAIN assembly.
- Calculate cam lift parameters for designing cam.
- Model IC ENGINE VALVE TRAIN assembly using SOLIDWORKS.
- Perform a Multibody Dynamics of IC ENGINE VALVE TRAIN assembly.
BASIC STUDY
The valve train of an internal combustion engine includes components required to control the flow of gases into and out of the combustion chamber. This includes valves and related components required to allow the air-fuel mixture to enter the combustion chamber, seal the combustion chamber during compression and combustion, and evacuate exhaust gases when combustion is complete. The type of valve train used for a reciprocating engine depends on the engine design and whether the engine is a four-stroke cycle or two-stroke cycle unit.
Valves allow the flow of air-fuel mixture into the cylinder, and the flow of exhaust gases from the cylinder.
IC ENGINE VALVE TRAIN ASSEMBLY
INPUTS AND CONSTRAINS
Input Speed of the Cam = 1500 rpm.
|
Sl.No |
CAM Lift (mm) |
Speed (RPM) |
Material |
|
1 |
3.5 |
1500 |
Cast Carbon Steel |
|
2 |
6 |
1500 |
Cast Carbon Steel |
EXPLANATION & PROCEDURE
Step 01: From input parameter calculate missing parameters for designing IC ENGINE VALVE TRAIN assembly.
Step 02: Model based on parameters calculated for designing IC ENGINE VALVE TRAIN assembly.
Step 03: Assemble IC ENGINE VALVE TRAIN assembly using SOLIDWORKS.
Step 04: Perform a Multibody Dynamics of IC ENGINE VALVE TRAIN assembly for two different cases.
RESULTS
The negative displacement is because of directional in -y axis and on intermittent motion.
The spikes in above graph are because of impact from intermittent motion to another and there are sudden force changes because of impact.
CONCLUSION
IC ENGINE VALVE TRAIN assembly analysed using SOLIDWORKS Multibody dynamics.
REFERENCES
- https://www.lunatipower.com/cam-spec-term/
- http://courses.washington.edu/engr100/Section_Wei/engine/UofWindsorManual/Valve%20Train.htm
- https://www.tvsmotor.com/blog/ohv-sohc-and-dohc-valve-trains/
- https://www.cs.cmu.edu/~rapidproto/mechanisms/chpt6.html
- https://www.comsol.com/blogs/how-to-model-a-cam-follower-mechanism/