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Oil-Cooled Aluminium Alloy Diesel Engine Pistons - A New Approach
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Sector:
Event:
National Powerplant Meeting
Language:
English
Abstract
The constant demand by engine builders for increased brake mean effective pressure (bmep) has made piston and ring temperature a serious limiting feature of engine development. The various methods previously employed to cool the piston are contrasted with the new approach of coring the oil-cooling passages by means of a water-soluble core. The development by Wellworthy of three practical foundry techniques embodying this principle which also permits the use of armored top grooves is described, with typical examples of such pistons. The effects of cooling in terms of piston temperature distribution are shown. The technique so far covers pistons 3 to 10 in. in diameter, and is fully patented.
Authors
Citation
Law, D. and Day, R., "Oil-Cooled Aluminium Alloy Diesel Engine Pistons - A New Approach," SAE Technical Paper 690749, 1969, https://doi.org/10.4271/690749.Also In
References
- Margot. L. French Patent No. 980,710 1943
- Fonderie de Precision. French Patent 813,689 1959