This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Development of Diesel Engine using New Fuel Injection System - Direct Monitoring of Fuel Injection Pressure using Injector with Built-in Sensor, and its Applications
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 08, 2013 by SAE International in United States
Annotation ability available
Recently, diesel engine manufacturers have been improving the tolerance of fuel injection quantity and timing in response to the strengthening of emissions regulations and the introduction of various kinds of diesel fuels. This paper describes the Intelligent Accuracy Refinement Technology (i-ART) system, which has been developed as a way of achieving substantially improved tolerances.
The i-ART system consists of a fuel pressure sensor installed in the injectors. It calculates the injection quantity and timing at high speed using a dedicated microcomputer designed for pressure waveform analysis. As the injector can directly measure the fuel injection pressure waveform for each injection, it can compensate the injection quantity and timing tolerance at any time.
Toyota Motor Corporation has introduced this system in Brazilian market vehicles. In Brazil, the PROCONVE L6 emissions regulations will be introduced in 2012, and the market also uses various kinds of diesel fuels. The i-ART system enables diesel engines to satisfy these new regulations, and drastically improves fuel consumption by adopting a low compression ratio and 3-pilot injection control. A cetane number detection control has also been developed using the i-ART system characteristics. As a result, even if a vehicle is driven using low or high cetane number diesel fuel, the same level of combustion noise is achieved by adjusting the engine calibration based on the detected cetane number. Engines equipped with this system have successfully passed the new emissions regulations and are compatible with the various kinds of diesel fuels used in Brazil.
CitationMiyaura, T., Morikawa, A., Ito, Y., Ishizuka, K. et al., "Development of Diesel Engine using New Fuel Injection System - Direct Monitoring of Fuel Injection Pressure using Injector with Built-in Sensor, and its Applications," SAE Technical Paper 2013-01-1739, 2013, https://doi.org/10.4271/2013-01-1739.
- Umehara , K. et al. Evolution for Diesel Fuel Injection System - the New World by Ultra High Pressure Injection JSAE Annual Congress Spring 2012
- Kojima , A. et al. Taking on the Challenge of a Diesel Revolution - Fusion of Ultra-High Pressures and System Control JSAE Symposium 2012
- Miyaki , M. Development and Evolution of Common Rail Systems Internal Combustion Engine Symposium 2011
- Miyaki , M. et al. Fulfilling Euro 6 Emission Regulations for Heavy Duty Engines without SCR-System -A Challenge to the FIE System 32nd International Vienna Motor Symposium 2011
- Rajamani , V. Further Innovations for Diesel Fuel Injection Systems: Closed-loop Control of Fuel Quantity by i-ART & Ultra High Injection Pressure Aachen Colloquium 2010
- Wang , X. et al. Development toward “Diesel Revolution” Using Ultra High Pressure CRS with Closed-loop Control System for Heavy Duty Engine FISITA World Automotive Congress 2010
- Herrmann , O. et al. The Breakthrough of Common Rail System: Closed-loop Control Strategy Using Injector with Built-in Pressure Sensor 30th International Vienna Motor Symposium 2009