Expanding Robust HCCI Operation with Advanced Valve and Fuel Control Technologies

Szybist, J. P.¹  Confer, K.² 

[1]Oak Ridge National Lab., Oak Ridge, TN (United States)

[2]Delphi Automotive Systems (United States)

关键词: CLASSIFICATION;    COMBUSTION;    COMMERCIALIZATION;    COMMUNICATIONS;    COMPRESSION;    CONTROL SYSTEMS;    EFFICIENCY;    ENGINES;    FEEDBACK;    HYDRAULICS;    IGNITION;    INTERNAL COMBUSTION ENGINES;    KNOWLEDGE BASE;    ORNL;    PARTICULATES;    PRODUCTION;    SIMULATION;    VALVES homogeneous charge compression ignition;   

DOI  :  10.2172/1050432
RP-ID  :  NFE-10-02739
PID  :  OSTI ID: 1050432
Others  :  Other: ORNL/TM-2012/361
Others  :  TRN: US201218%%1000

美国|英语

来源: SciTech Connect

【 摘 要 】

Delphi Automotive Systems and ORNL established this CRADA to advance the commercialization potential of the homogeneous charge compression ignition (HCCI) advanced combustion strategy for gasoline engine platforms. HCCI combustion has been shown by others to produce high diesel-like efficiency on a gasoline engine platform while simultaneously producing low NOX and particulate matter emissions. However, the commercialization barriers that face HCCI combustion are significant, with requirements for a more active engine control system, likely with next-cycle closed-loop feedback control, and with advanced valve train technologies to enable negative valve overlap conditions. In the partnership between Delphi and ORNL, each organization brought a unique and complementary set of skills to the project. Delphi has made a number of breakthroughs with production-intent valve train technologies and controls in recent years to make a part time production-intent HCCI engine plausible. ORNL has extensive knowledge and expertise with HCCI combustion, and also has a versatile research engine with hydraulic valve actuation (HVA) that is useful for guiding production of a cam-based HCCI system. Partnering these knowledge bases and capabilities was essential towards making progress to better understand HCCI combustion and the commercialization barriers that it faces. ORNL and Delphi maintained strong collaboration throughout the project. Meetings were held regularly, with additional reports, presentations, and meetings as necessary to maintain progress. Delphi provided guidance to ORNL regarding operational strategies to investigate on their single-cylinder research engine with HVA and data from their experimental multi-cylinder engine for modeling. ORNL provided single-cylinder engine data and modeling results.