ORBITAL PRESENTS HCCI/CAI DIRECT INJECTION PAPER AT SAE WORLD CONGRESS
Orbital presented a technical paper at the Annual SAE World Congress and Exhibition being held Detroit, Michigan this week.
The SAE World Congress is the Premier Automotive Technology Event of the SAE calendar, bringing together an expected 35,000 participants from the OEM automotive companies through to the suppliers and the R&D houses.
The theme of the Congress is "A Climate of Change" exploring the near and longer term automotive technologies under development across a wide range of topics from combustion technologies, to Powertrain alternatives including hybrids, materials, manufacturing and looking into the automotive systems of the future.
Orbital's paper, titled "The Potential of HCCI/CAI Control through the Application of Spray Guided Direct Injection "publishes Orbital's recent work in this combustion area.
Whilst Homogeneous Charge Compression Ignition (HCCI)/Controlled Auto-Ignition (CAI) has been known to offer combustion efficiencies comparable with modern diesel along with improved emission capability, its practical use has been limited due to the restricted operating load/speed range and related control issues.
Orbital's investigations have shown that with the application of air assisted spray guided injection, the HCCI/CAI operating range can be significantly increased with a simple valvetrain. In addition, the enhanced ability to adjust combustion from cycle to cycle can ensure optimal operation under transient conditions, including switches between combustion modes.
The HCCI/CAI combustion developments are part of Orbital's continued development and enhancement of the Orbital FlexDITM "One Engine - Any Fuel" systems.
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