Oilless Piston Engines

无油活塞发动机

• 批准号: RGPIN-2016-04379
• 负责人: Picard, Mathieu
• 金额: $ 2.48万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=638363
• 关键词: Oilless; Piston; Engines

Lubricating oil in piston engines protects the contacting parts, but leads to hydrocarbon emissions, catalyst poisoning, frequent maintenance, and major heat losses as the liner must be kept cool enough to prevent excessive oil consumption. The need to address this problem has been discussed by many authors, especially during the programs to develop the so-called adiabatic engines in the 1980s and 1990s. However, oilless engines remains highly desirable from an environmental perspective as they would achieve low emissions and high efficiencies. Previous unsuccessful attempts clearly indicates that fundamental issues still have to be resolved to achieve this technological breakthrough. Contact-free sealing of the piston appears to be a promising option when combined to a low-pressure recuperated thermodynamic cycle.

活塞式发动机中的润滑油保护了接触部件，但会导致碳氢化合物排放、催化剂中毒、频繁维护和重大热损失，因为衬套必须保持足够的温度以防止过度消耗机油。解决这个问题的必要性已经被许多作者讨论过，特别是在20世纪80年代和90年代开发所谓绝热发动机的计划期间。然而，从环境角度来看，无油发动机仍然是非常可取的，因为它们将实现低排放和高效率。之前失败的尝试清楚地表明，要实现这一技术突破，仍需解决根本问题。当与低压恢复热力循环相结合时，活塞的无接触密封似乎是一种很有前途的选择。