The Prediction of Heat and Mass Transfer During Compression and Expansion in I.C. Engines
760761
02/01/1976
- Event
- Content
- The mathematical equations describing the momentum, energy and mass exchanges in non-firing engine cylinders are described and solved. Attention is confined to laminar flow in axi-symmetric cylinders. Pressure development and velocity prediction, for plane cylindrical combustion chambers, compare favourably with experimental measurements for compression] and expansion in motored engines. At engine speeds less than 100 rev/min the piston motion induces a toroidal vortex during compression whose direction is not reversed on expansion. Conductive heat transfer at higher engine speeds, 600-1000 rev/min, adequately describes the gas-wall heat-transfer. Flow patterns are also predicted for a diesel-type bowl in piston configuration.
- Pages
- 12
- Citation
- Chong, M., Milkins, E., and Watson, H., "The Prediction of Heat and Mass Transfer During Compression and Expansion in I.C. Engines," SAE Technical Paper 760761, 1976, https://doi.org/10.4271/760761.