Powder-lubricant piston ring for diesel engines
This patent describes a diesel engine fueled by coal-water slurry. It comprises: a distal end including a piston head impinging upon a combustion chamber formed between the piston and a cylinder of the diesel engine; a proximal end including means for attaching the piston to a reciprocating arm means; a heat dam between the distal end and the proximal end, the heat dam including a portion of substantially decreased diameter thereby forming a debris chamber within the piston; the distal portion including a particulate return valve communicating from the debris chamber to the combustion chamber wherein residue from the coal-water slurry is returned from the debris chamber to the combustion chamber; and at least one powder-lubricated ring circumferentially extending around the piston head wherein lubricant powder is disposed between the powder-lubricant powder is disposed between the powder-lubricant ring and a wall of the cylinder.
- Assignee:
- Mechanical Technology, Inc., Latham, NY (United States)
- Patent Number(s):
- US 5085185; A
- Application Number:
- PPN: US 7-582473
- OSTI ID:
- 5278985
- Resource Relation:
- Patent File Date: 14 Sep 1990
- Country of Publication:
- United States
- Language:
- English
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