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Accession Number:
ADA564309
Title:
How to Deal with Fuel Found in Theater: AVL Cypress - Cylinder Pressure Based Combustion Control for Consistent Performance with Varying Fuel Properties
Descriptive Note:
Conference paper
Corporate Author:
ARMY TANK AUTOMOTIVE RESEARCH DEVELOPMENT AND ENGINEERING CENTER WARREN MI
Report Date:
2012-08-01
Pagination or Media Count:
8.0
Abstract:
Cylinder Pressure Monitoring AVL CYPRESS trade mark is a technology which provides closed-loop feedback to enable real-time control of combustion in a compression ignition engine. This makes it possible to adapt to the fuel ignition quality and energy density by adjusting the main injection quantity and the placement of the injection events. The engine control system can thus detect fuel quality and adapt the combustion phasing quickly and robustly and without any prior knowledge of fuel properties. By using a cylinder pressure sensors, the engine controller will be able to map the development of the apparent rate of heat release ARHR and the mass fuel burn curve - which provides good thermal efficiency correlation. The cylinder pressure map detects the combustion event and the feedback controller adjusts the start of injection to maintain the combustion event at the desired crank position. The cylinder pressure sensor allows for accurate measurement of the power produced. By varying the volume of fuel in each injection shot the controller actively manages the engine power and noise signature with different fuels e.g. DF-2, JP-8, JP-5, etc.. The initial concept for this approach was derived from AVLs suite of hardware and software tools developed for base engine combustion research and development. This technology is now licensed to major OEMs and is in production vehicles in Europe.
Distribution Statement:
APPROVED FOR PUBLIC RELEASE
