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首页> 外文期刊>Fortschritt-Berichte VDI, Reihe 12. Verkehrstechnik-Fahrzeugtechnik >Dynamic Skip Fire: The Ultimate Cylinder Deactivation Strategy
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Dynamic Skip Fire: The Ultimate Cylinder Deactivation Strategy

机译：动态跳过火灾：终极汽缸停用策略

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摘要

What if every ICE combustion event occurred under optimal conditions, delivering peak efficiency? What if those events could be scheduled, in real time, to provide the exact torque demanded in an automotive application? Tula's Dynamic Skip Fire (DSF) technology delivers that combination. By selecting the sequence of combustion events dynamically, engine operation occurs near peak efficiency, virtually eliminating pumping losses and significantly improving thermal efficiency. The challenge with such a concept is avoiding objectionable vibration caused by stronger torque pulsations occurring at lower frequency. Tula's DSF technology overcomes this challenge. Sophisticated objective and subjective development have enabled DSF algorithms which avoid sensitive frequencies and amplitudes. DSF ensures a smooth driving experience while delivering an 8-15% fuel consumption reduction and no impact on regulated toxic emissions. Moreover, DSF presents a high value solution for meeting global emissions mandates as these benefits cost less than 40{EUR} per percent gain in fuel efficiency. Selecting combustion on a per-event basis enables efficient, millisecond torque modulation, allowing gear shifts without spark retard. Further, DSF provides faster torque response due to intrinsically high manifold pressure. Deactivating all intake and exhaust valves during deceleration minimizes catalyst reactivation fuel losses, which simultaneously allows additional gains in brake energy regeneration due to elimination of pumping loss during deceleration. Production implementation in larger engines is pending, and development in partnership with Delphi on a 1.8L 4-cylinder GTDI vehicle is nearing completion. Development of integrated hybrid (optimally 48V) torque smoothing amplifies DSF benefits while adding essentially zero cost to the hybrid or DSF implementation.
机译：如果在最佳条件下发生每次冰燃烧事件，提供峰值效率怎么办？如果这些事件可以实时安排这些事件，以便在汽车应用中提供所需的确切扭矩？ Tula的动态跳过火（DSF）技术提供该组合。通过动态地选择燃烧事件序列，发动机操作发生在峰值效率附近，几乎消除了泵浦损耗并显着提高了热效率。这种概念的挑战避免了由在较低频率下发生的扭矩脉动的更强的扭矩脉动引起的令人讨厌的振动。图拉的DSF技术克服了这一挑战。精致的客观和主观开发使DSF算法能够避免敏感频率和幅度。 DSF确保了平稳的驾驶体验，同时提供了8-15％的燃油消耗，对受管制毒性排放产生影响。此外，DSF提供了高价值解决方案，以满足全球排放授权，因为这些福利成本低于燃料效率的百分比百分之余量。在每个事件基础上选择燃烧使能有效，毫秒的扭矩调制，允许无火花延迟的换档。此外，DSF由于内在高歧管压力，DSF提供更快的扭矩响应。停用减速期间的所有进气和排气阀最小化催化剂再激活燃料损失，其由于在减速期间消除了泵送损耗而同时允许制动能量再生的额外收益。在较大的发动机中的生产实施是待决的，并且在1.8L 4缸GTDI车辆上与Delphi合作开发即将完成。开发集成的混合动力车（最佳48V）扭矩平滑放大DSF优势，同时为混合动力或DSF实施添加基本零成本。

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