Supercharged Diesel Non-Gasoline Burning Outboard Engine

This proposal outlines an SBIR Phase I supercharged uniflow diesel non-gasoline burning outboard engine design capable of diesel fuel operation and lightweight construction. Inherent specific weight penalties of the Diesel cycle being inversely proportional to specific displacement, indicates a scale reduction of these engines demand greater design discipline relative to the combustion physics that govern their performance. The proposed approach employs a combination of innovative translation of rotary to reciprocating motion resulting in a compact design of high mechanical efficiency. Additional power-producing volumetric valving controls air-swirl and scavenging efficiency, enabling high BMEP levels. High thermal efficiency is achieved by the incorporation of low surface/volume geometry. The design makes extensive use of component synergism.