- 期刊
- OpenAccess
Fuel Efficiency Test of Internal Combustion Engine with Gas-Cushioned Piston
並列摘要
For a conventional reciprocating engine, due to combustion pressure and tilting of connecting rod, there will be unnecessarily high side thrust between piston and cylinder inner wall. This side thrust will induce extra friction power loss, wear and other adverse effects. Thus, the gas-cushioned piston with inclined piston rings to produce a transverse gas pressure is devised to somehow counteract this piston side thrust for improving the fuel efficiency by a few percentiles and reducing associated adverse effects. Although with general background theory for gas-cushioned piston being available, yet, up to now no proof experiment has been reported. Herein, we present the fuel efficiency experiments of reciprocating engine with gas-cushioned piston. Even with a smaller-than-optimal ring inclination due to the topland dimension limitation for an off-the-shelf uncarved piston, the engine with gas-cushioned piston still proves its performance superiority over conventional design. Although associated pilot tests are reported here, nevertheless, it is felt that more comprehensive test programs and design refinements shall be executed by interested auto agencies with better-equipped research resources, before such novel piston becomes an auto industrial practice.
延伸閱讀
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